CN112657518A - Carbon dioxide reduction composite photocatalytic material and preparation method thereof - Google Patents
Carbon dioxide reduction composite photocatalytic material and preparation method thereof Download PDFInfo
- Publication number
- CN112657518A CN112657518A CN202110016894.3A CN202110016894A CN112657518A CN 112657518 A CN112657518 A CN 112657518A CN 202110016894 A CN202110016894 A CN 202110016894A CN 112657518 A CN112657518 A CN 112657518A
- Authority
- CN
- China
- Prior art keywords
- photocatalytic material
- carbon dioxide
- preparation
- composite photocatalytic
- dioxide reduction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 61
- 239000000463 material Substances 0.000 title claims abstract description 59
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 28
- 230000009467 reduction Effects 0.000 title claims abstract description 24
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002243 precursor Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052961 molybdenite Inorganic materials 0.000 claims abstract description 17
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 12
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 11
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910021626 Tin(II) chloride Inorganic materials 0.000 claims abstract description 7
- 150000002751 molybdenum Chemical class 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000011065 in-situ storage Methods 0.000 claims description 8
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 6
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 239000011684 sodium molybdate Substances 0.000 claims description 4
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- PDKHNCYLMVRIFV-UHFFFAOYSA-H molybdenum;hexachloride Chemical compound [Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[Mo] PDKHNCYLMVRIFV-UHFFFAOYSA-H 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 235000015393 sodium molybdate Nutrition 0.000 claims description 2
- FAKFSJNVVCGEEI-UHFFFAOYSA-J tin(4+);disulfate Chemical compound [Sn+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O FAKFSJNVVCGEEI-UHFFFAOYSA-J 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000006722 reduction reaction Methods 0.000 description 22
- 239000003054 catalyst Substances 0.000 description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 11
- 239000004065 semiconductor Substances 0.000 description 11
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- 238000011161 development Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000009777 vacuum freeze-drying Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 239000011941 photocatalyst Substances 0.000 description 3
- 229910004619 Na2MoO4 Inorganic materials 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002135 nanosheet Substances 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Images
Landscapes
- Catalysts (AREA)
Abstract
The invention discloses a carbon dioxide reduction composite photocatalytic material and a preparation method thereof. The chemical composition of the carbon dioxide reduction composite photocatalytic material is MoS2/SnS2‑x. The preparation method comprises the following steps: dissolving thiourea in water, and stirring to obtain a solution; adding molybdenum salt and tin salt into the solution and stirring to form a precursor solution; and transferring the precursor solution into a hydrothermal kettle, carrying out hydrothermal reaction at 100-300 ℃, washing, and drying to obtain the carbon dioxide reduction composite photocatalytic material. The interface defects of the photocatalytic material obtained by the method are greatly reduced, the interface conductivity is higher, and the photocatalytic material has smaller particle size and higher catalytic performance; the preparation method of the invention does not need toSpecial equipment and harsh conditions, simple process, strong controllability, easy realization of large-scale production and practicability.
Description
Technical Field
The invention relates to a preparation method of a high-efficiency carbon dioxide reduction composite photocatalytic material, belonging to the technical field of photocatalytic materials.
Background
At present, the development of human society is severely restricted by the problem of environmental pollution caused by exhaustion and use of traditional fossil energy. The development and utilization of new energy sources become the focus of attention of people. Among a plurality of new energy technologies, photocatalytic solar fuel preparation can convert solar energy into hydrogen energy (photocatalytic water decomposition) and other chemical energy (photocatalytic carbon dioxide fixation) and is one of the technologies with the most application prospect. Although the photocatalytic technology is very attractive and has great potential for development in the field of solar energy conversion, large-scale application cannot be realized, and the core problems of the photocatalytic technology are that the utilization rate of solar energy by a catalyst is not high, a photon-generated carrier is easy to recombine, the adsorption and activation capacity of the catalyst on pollutants is low, and the like. Therefore, the search for new catalytic materials and catalytic technologies to solve the above problems and improve the solar energy conversion efficiency has become an important research subject in this direction.
CO2The key of the reduction reaction is CO2Adsorption and activation. Conventional CO2The reduction requires the activation of CO in a high-temperature and high-pressure environment2A molecule. If light energy is introduced into this reaction system, it is possible to effect this reaction at normal temperature and pressure. Photocatalytic CO2Reduction is achieved by reacting CO with a semiconductor photocatalyst in response to light2The conversion of C-H organic matters such as methane, methanol, ethanol and the like into light energy into chemical energy is a new technology, and has become an important scientific and technical problem in the field of photocatalysis due to energy conservation and environmental protection.
Photocatalytic CO2The core problem of reduction is the design, development and development of suitable photocatalysts. The current research is mainly focused on transition metal doped TiO2A base series photocatalyst. But in the case of TiO2There are several key technical difficulties, such as TiO2Has a band gap of 3.2eV, can be excited only by ultraviolet light (accounting for only 3.8% of solar energy), and further TiO2The recombination rate of photon-generated carriers is high, the quantum efficiency is low (less than 4 percent), the utilization rate of solar energy is low, and almost no photoresponse exists in the visible light range; for photocatalytic CO2When reducing, the methane yield is generally 0.1-10 mu mol/g without adding a cavity sacrificial agentcatalyst·h。
The research and development of a novel high-efficiency photocatalytic material for realizing photocatalytic CO by utilizing solar energy2The key to reduction is the inevitable trend and development direction for further practical application of photocatalysis. Solar CO improving photocatalytic material2Reduction efficiency, on the one hand, needs to reduce the band gap of the semiconductor catalytic material in order to utilize visible light and infrared light in solar energyExciting a photocatalytic material; on the other hand, the separation and transmission efficiency of the photon-generated carriers needs to be improved, and the effective carrier concentration transmitted to the surface of the material is increased, so that the photocatalytic performance is improved. Compared with oxide semiconductor photocatalytic materials, sulfides have narrower band gaps, and can absorb more visible light to participate in catalytic reaction. In MoS2For example, the semiconductor band gap is only about 1.8eV, and the semiconductor band gap can be excited by visible light and ultraviolet light with the wavelength of less than 688nm, so the semiconductor band gap is expected to be a high-activity visible light catalytic material. But MoS2The narrow band gap also causes valence band holes to recombine more easily with conduction band electrons, thereby rendering the excited electrons ineffective in participating in the photocatalytic reaction. In order to solve the problems, a method for preparing a composite photocatalytic material is generally adopted at present, so that a photo-generated electron and a photo-generated hole are respectively transferred to two mutually contacted semiconductors, the recombination probability of a current carrier on the same semiconductor is reduced, and the photocatalytic efficiency is increased. Semiconductor SnS2The band gap is about 2.4eV, and the catalyst is an ideal visible light semiconductor catalyst. There are reports that have confirmed MoS2And SnS2Composite prepared photocatalytic material performance ratio pure MoS2And SnS2High in activity, and is expected to become an applicable high-activity visible-light catalyst. But currently MoS2/SnS2The preparation of the composite material adopts a two-step method, and MoS is prepared firstly2Or SnS2And (3) dispersing the powder in a precursor solution of another component, and growing a second component on the original powder by heating or hydrothermal method. The composite material obtained by the step preparation method is difficult to realize in-situ growth at the interface of the composite material, so that the interface resistance is increased, the migration of electron holes between two catalysts is hindered, and an ideal semiconductor composite catalyst cannot be formed. Therefore, the invention discloses a one-step method in-situ growth technology for preparing two-phase composite MoS2/SnS2The photocatalytic material has high scientific value and practical significance for relieving energy crisis and preventing and treating environmental pollution.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to improve solar energy CO of photocatalysis material2And (4) reducing efficiency.
In order to solve the technical problem, the invention provides a carbon dioxide reduction composite photocatalytic material which is characterized in that the chemical composition of the carbon dioxide reduction composite photocatalytic material is MoS2/SnS2-x。
Preferably, the carbon dioxide reduction composite photocatalytic material is obtained by in-situ growth from a precursor solution by a one-step hydrothermal method.
The invention also provides a preparation method of the carbon dioxide reduction composite photocatalytic material, which is characterized in that thiourea is dissolved in water and stirred into a solution; adding molybdenum salt and tin salt into the solution and stirring to form a precursor solution; and transferring the precursor solution into a hydrothermal kettle, carrying out hydrothermal reaction at 100-300 ℃, washing, and drying to obtain the carbon dioxide reduction composite photocatalytic material.
Preferably, the molybdenum salt is at least one of soluble molybdate, molybdenum chloride and molybdenum complex; the tin salt is at least one of tin sulfate, tin chloride and a tin complex.
More preferably, the soluble molybdate is at least one of sodium molybdate and potassium molybdate.
Preferably, the molar concentration of thiourea in the precursor solution is 0.01-10 mol/L, the molar concentration of molybdenum is 0.005-0.5 mol/L, and the molar concentration of tin is 0.005-0.5 mol/L.
Preferably, the temperature for dissolving the thiourea in the water is 0-90 ℃ and the time is 0.5-2 h.
Preferably, the molybdenum salt and the tin salt are added into the solution and stirred for 0.5-2 hours.
Preferably, the filling degree of the hydrothermal kettle is 40-80%.
Preferably, the hydrothermal reaction time is 2-24 h, and the temperature is 100-250 ℃.
Compared with the prior art, the invention has the following beneficial effects:
1. MoS obtained by the method of the invention2/SnS2Photocatalytic material, SnS2Nanosheet and MoS2The nano-sheets are in front of the same homogeneous phaseFormation of MoS in the solution of the driver2And SnS2One-step in-situ growth is realized by sharing S atoms to obtain MoS2/SnS2MoS is adopted as the composite photocatalytic material ratio2Or SnS2The composite material grown as the precursor has greatly reduced interface defects and higher interface conductivity. And the MoS obtained by in-situ growth2/SnS2Photocatalytic material, SnS2The particles grow on MoS2On the surface, the catalyst has smaller particle size and higher catalytic performance. The composite material grown in situ photocatalyzes CO in pure water under the condition of simulating the sun illumination for 10 hours2Reduction can produce 49 mu mol/gcatalyst61. mu. mol/g of methanecatalyst257. mu. mol/g of COcatalystH of (A) to (B)2Showing a higher MoS than the two-step preparation2/SnS2Catalytic material (23. mu. mol/g)catalystMethane of (2), 22. mu. mol/gcatalystCO of 196. mu. mol/gcatalystH of (A) to (B)2) Higher performance.
2. The preparation method does not need special equipment and harsh conditions, has simple process and strong controllability, is easy to realize large-scale production and has practicability.
Drawings
FIG. 1 shows MoS obtained in example 12/SnS2XRD diffraction pattern of photocatalytic material.
FIG. 2 shows MoS obtained in example 12/SnS2Transmission electron micrographs of photocatalytic materials.
FIG. 3 shows MoS obtained in examples 1 and 42/SnS2Photocatalytic material for photocatalytic CO under simulated sunlight2Comparative plot of reduction efficiency.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Example 1
A preparation method of a carbon dioxide reduction composite photocatalytic material comprises the following steps:
dissolving 30mmoL of thiourea in 70mL of deionized water at room temperature, and magnetically stirring for 0.5 hour to form a transparent solution;
adding 2.5mmol of Na2MoO4·2H2O and 2.5mmol SnCl4·5H2Adding O into the solution, and stirring at room temperature for 0.5 hour to form a transparent precursor solution;
transferring the precursor suspension into a 100mL hydrothermal kettle, carrying out hydrothermal reaction at 220 ℃ for 18 hours, and naturally cooling to room temperature;
washing a solid sample in a hydrothermal kettle by deionized water, ethanol and the like, and then using a vacuum freeze drying technology to obtain powder, namely MoS growing in situ2/SnS2A photocatalytic material.
FIG. 1 shows MoS obtained in the present example2/SnS2XRD diffraction pattern of the photocatalytic material shows that the MoS is obtained through XRD analysis2/SnS2The photocatalytic material is mainly composed of MoS2,SnS2Composition, containing a small amount of SnS.
FIG. 2 shows MoS obtained in the present example2/SnS2Transmission electron micrograph of photocatalytic material, visible from fig. 2: the diameter of the pore wall of the obtained ordered mesoporous BiO photocatalytic material is 2-3 nm.
To study the photocatalytic CO of the samples prepared2Reduction performance, designing the material to convert pure CO in a pure water system under simulated sunlight2Reduction to methane and CO.
The methane and CO concentrations were measured experimentally by gas chromatography.
Equal amount of MoS2/SnS2Photocatalytic material and pure MoS prepared by hydrothermal method2(obtained in example 2), pure SnS2Photocatalytic Material (obtained in example 3) and MoS prepared in two-step Process2/SnS2Photocatalytic Material (obtained in example 4, labelled MoS2/SnS2TS) are respectively added into 100mL of pure water, and pure CO with 1 atmospheric pressure is introduced into the reactor2And sealing, and then placing under a 300W xenon lamp for irradiating for 6 hours, and detecting the concentration of methane and CO in the reactor.
FIG. 3 shows the MoS obtained in this example2/SnS2Photocatalytic material and comparative photocatalytic material (MoS)2,SnS2,MoS2/SnS2TS) reduction of CO in aqueous xenon lamp solutions2Efficiency versus a graph. As can be seen from fig. 3: the MoS obtained2/SnS2The photocatalytic material exhibits higher catalytic performance than other comparative photocatalytic materials.
Example 2
A preparation method of a carbon dioxide reduction composite photocatalytic material comprises the following steps:
dissolving 15mmoL of thiourea in 70mL of deionized water at room temperature, and magnetically stirring for 0.5 hour to form a transparent solution;
adding 2.5mmol of Na2MoO4·2H2Adding O into the solution, and stirring at room temperature for 0.5 hour to form a transparent precursor solution;
transferring the precursor suspension into a 100mL hydrothermal kettle, carrying out hydrothermal reaction at 220 ℃ for 18 hours, and naturally cooling to room temperature;
washing a solid sample in a hydrothermal kettle by deionized water, ethanol and the like, and then using a vacuum freeze drying technology to obtain powder, namely pure MoS2A photocatalytic material.
Example 3
A preparation method of a carbon dioxide reduction composite photocatalytic material comprises the following steps:
dissolving 15mmoL of thiourea in 70mL of deionized water at room temperature, and magnetically stirring for 0.5 hour to form a transparent solution;
adding 2.5mmol of SnCl4·5H2Adding O into the solution, and stirring at room temperature for 0.5 hour to form a transparent precursor solution;
transferring the precursor suspension into a 100mL hydrothermal kettle, carrying out hydrothermal reaction at 220 ℃ for 18 hours, and naturally cooling to room temperature;
washing a solid sample in a hydrothermal kettle by deionized water, ethanol and the like, and then using a vacuum freeze drying technology to obtain powder, namely pure SnS2A photocatalytic material.
Example 4
A preparation method of a carbon dioxide reduction composite photocatalytic material comprises the following steps:
dissolving 15mmoL of thiourea in 20mL of deionized water at room temperature, and magnetically stirring for 0.5 hour to form a transparent solution;
adding 2.5mmol of SnCl4·5H2Adding O into the solution, and stirring at room temperature for 0.5 hour to form a transparent solution;
0.455g of MoS obtained in example 2 was charged2Ultrasonically dispersing in 50mL of water for 2 hours, and then adding the precursor solution to obtain a precursor suspension;
transferring the precursor suspension into a 100mL hydrothermal kettle, carrying out hydrothermal reaction at 220 ℃ for 18 hours, and naturally cooling to room temperature;
washing a solid sample in a hydrothermal kettle by deionized water, ethanol and the like, and then using a vacuum freeze drying technology to obtain powder, namely MoS prepared by a two-step method2/SnS2A photocatalytic material.
Claims (10)
1. The carbon dioxide reduction composite photocatalytic material is characterized in that the chemical composition of the carbon dioxide reduction composite photocatalytic material is MoS2/SnS2-x。
2. The carbon dioxide reducing composite photocatalytic material as set forth in claim 1, wherein the carbon dioxide reducing composite photocatalytic material is obtained by in-situ growth from a precursor solution by a one-step hydrothermal method.
3. The method for preparing the carbon dioxide reduction composite photocatalytic material as recited in claim 1 or 2, wherein thiourea is dissolved in water and stirred into a solution; adding molybdenum salt and tin salt into the solution and stirring to form a precursor solution; and transferring the precursor solution into a hydrothermal kettle, carrying out hydrothermal reaction at 100-300 ℃, washing, and drying to obtain the carbon dioxide reduction composite photocatalytic material.
4. The method of claim 3, wherein the molybdenum salt is at least one of a soluble molybdate, molybdenum chloride and a molybdenum complex; the tin salt is at least one of tin sulfate, tin chloride and a tin complex.
5. The method of claim 4, wherein the soluble molybdate is at least one of sodium molybdate and potassium molybdate.
6. The method according to claim 3, wherein the molar concentration of thiourea, the molar concentration of molybdenum and the molar concentration of tin in the precursor solution are respectively 0.01-10 mol/L, 0.005-0.5 mol/L and 0.005-0.5 mol/L, respectively.
7. The preparation method according to claim 3, wherein the thiourea is dissolved in the water and stirred at the temperature of 0-90 ℃ for 0.5-2 h.
8. The method according to claim 3, wherein the molybdenum salt and the tin salt are added to the solution and stirred for 0.5 to 2 hours.
9. The preparation method according to claim 3, wherein the degree of filling of the hydrothermal reactor is 40 to 80%.
10. The preparation method according to claim 3, wherein the hydrothermal reaction is carried out for 2-24 hours at 100-250 ℃.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110016894.3A CN112657518A (en) | 2021-01-07 | 2021-01-07 | Carbon dioxide reduction composite photocatalytic material and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110016894.3A CN112657518A (en) | 2021-01-07 | 2021-01-07 | Carbon dioxide reduction composite photocatalytic material and preparation method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112657518A true CN112657518A (en) | 2021-04-16 |
Family
ID=75413356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110016894.3A Pending CN112657518A (en) | 2021-01-07 | 2021-01-07 | Carbon dioxide reduction composite photocatalytic material and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112657518A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116139874A (en) * | 2023-04-20 | 2023-05-23 | 潍坊学院 | Catalyst for preparing methanol by circularly using photocatalytic reduction of carbon dioxide and preparation method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3536798A1 (en) * | 2018-03-08 | 2019-09-11 | Indian Oil Corporation Limited | Bio-assisted process for conversion of carbon-dioxide to fuel precursors |
CN110252346A (en) * | 2019-05-29 | 2019-09-20 | 江苏大学 | A kind of MoS2/SnS2The preparation method and purposes of/r-GO composite photo-catalyst |
CN112121826A (en) * | 2020-10-16 | 2020-12-25 | 安徽理工大学 | 1T @2H-MoS2/SnS2Preparation method, product and application of visible light response photocatalyst |
-
2021
- 2021-01-07 CN CN202110016894.3A patent/CN112657518A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3536798A1 (en) * | 2018-03-08 | 2019-09-11 | Indian Oil Corporation Limited | Bio-assisted process for conversion of carbon-dioxide to fuel precursors |
CN110252346A (en) * | 2019-05-29 | 2019-09-20 | 江苏大学 | A kind of MoS2/SnS2The preparation method and purposes of/r-GO composite photo-catalyst |
CN112121826A (en) * | 2020-10-16 | 2020-12-25 | 安徽理工大学 | 1T @2H-MoS2/SnS2Preparation method, product and application of visible light response photocatalyst |
Non-Patent Citations (1)
Title |
---|
骆志军: "钒酸盐纳米颗粒的合成与光学性质", 《中国优秀硕士学位论文数据库工程科技Ⅰ辑》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116139874A (en) * | 2023-04-20 | 2023-05-23 | 潍坊学院 | Catalyst for preparing methanol by circularly using photocatalytic reduction of carbon dioxide and preparation method thereof |
CN116139874B (en) * | 2023-04-20 | 2023-06-16 | 潍坊学院 | Catalyst for preparing methanol by circularly using photocatalytic reduction of carbon dioxide and preparation method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Wang et al. | Photocatalytic CO2 reduction over copper-based materials: A review | |
CN107349937B (en) | Preparation method of graphene-based bimetallic sulfide nano composite photocatalyst | |
CN110694648B (en) | Photocatalytic water-splitting hydrogen-production molybdenum-doped indium-zinc sulfide hollow hierarchical structure photocatalyst and preparation method thereof | |
CN109876843B (en) | Copper alloy modified titanium dioxide/carbon nitride heterojunction photocatalyst and preparation method thereof | |
CN109746011B (en) | MOF-based derived composite photocatalyst and preparation method thereof | |
CN111203231B (en) | Indium zinc sulfide/bismuth vanadate composite material and preparation method and application thereof | |
CN111261413B (en) | Ti-doped alpha-Fe2O3Nanorod composite MOFs heterojunction photo-anode and preparation method and application thereof | |
CN111569896A (en) | BiVO4-Ni/Co3O4Synthesis method of heterojunction and application of heterojunction to photoelectrolysis water | |
CN112871186A (en) | Nickel diselenide/sulfur indium zinc composite photocatalyst and preparation method and application thereof | |
CN112958116B (en) | Bi2O2.33-CdS composite photocatalyst and preparation process thereof | |
CN110624595A (en) | Calcium-indium-sulfur/titanium carbide photocatalytic composite material and preparation method thereof | |
Zhang et al. | Metal-organic framework-derived nitrogen-doped carbon-coated hollow tubular In2O3/CdZnS heterojunction for efficient photocatalytic hydrogen evolution | |
CN111359638B (en) | Photocatalytic carbon dioxide reduction catalyst and preparation method and application thereof | |
CN107829108B (en) | FeOOH/CdS/Ti: Fe2O3Composite photoelectrode and preparation method thereof | |
Li et al. | ZIF‐67 derived hollow double‐shell core Co3O4 modified g‐C3N4 to construct p‐n heterojunction for efficient photocatalytic hydrogen evolution | |
CN113856702A (en) | Cadmium sulfide nanorod/cuprous sulfide nanoshell heterostructure photocatalyst and preparation method and application thereof | |
CN113699549A (en) | Ruthenium and tin bimetallic oxide electrocatalytic material and preparation method and application thereof | |
CN113755861A (en) | Preparation method and application of Z-type heterojunction photoelectrode | |
CN112657518A (en) | Carbon dioxide reduction composite photocatalytic material and preparation method thereof | |
CN109402661B (en) | MIL-100(Fe)/TiO2Preparation method and application of composite photoelectrode | |
CN114984988B (en) | Zn 0.5 Cd 0.5 S/CuInS 2 /Bi 2 Se 3 Preparation and application of composite catalyst | |
CN112675832B (en) | Carbon dioxide reduction ordered mesoporous catalytic material and preparation method thereof | |
CN105088266A (en) | Method for compounding co-catalyst on semiconductor material to manufacture photoelectric chemical cell nano-structure photoelectrode | |
CN113842925B (en) | CdS/NiS2Bulk photocatalyst and preparation method and application thereof | |
CN112657516B (en) | Direct Z-type photocatalyst and preparation method and application thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210416 |
|
RJ01 | Rejection of invention patent application after publication |