CN110871100B - Aniline carbon quantum dot doped carbon nitride material and preparation and application thereof - Google Patents
Aniline carbon quantum dot doped carbon nitride material and preparation and application thereof Download PDFInfo
- Publication number
- CN110871100B CN110871100B CN201911259390.3A CN201911259390A CN110871100B CN 110871100 B CN110871100 B CN 110871100B CN 201911259390 A CN201911259390 A CN 201911259390A CN 110871100 B CN110871100 B CN 110871100B
- Authority
- CN
- China
- Prior art keywords
- aniline
- carbon quantum
- nitride material
- quantum dots
- carbon
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/323—Catalytic reaction of gaseous or liquid organic compounds other than hydrocarbons with gasifying agents
- C01B3/326—Catalytic reaction of gaseous or liquid organic compounds other than hydrocarbons with gasifying agents characterised by the catalyst
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
- C01B2203/0233—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a steam reforming step
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1217—Alcohols
- C01B2203/1223—Methanol
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
The invention relates to a preparation method of an aniline carbon quantum dot doped carbon nitride material, which comprises the following steps: burning aniline, mixing the combustion product with alcohol after complete combustion, and performing ultrasonic dispersion completely to separate aniline carbon quantum dots; and uniformly mixing the aniline carbon quantum dots and urea, calcining at the temperature of 180-220 ℃ for 2-3 hours, and then calcining at the temperature of 500-550 ℃ for 3-5 hours to obtain the aniline carbon quantum dot doped carbon nitride material. The invention also discloses application of the carbon nitride material doped with the aniline carbon quantum dots as a catalyst for hydrogen production by catalytic reforming of methanol. The carbon nitride material doped with aniline carbon quantum dots is simple in preparation method, and can realize hydrogen production by catalytic reforming of methanol at low temperature.
Description
Technical Field
The invention relates to the field of catalysts for hydrogen production by catalytic reforming of methanol, in particular to an aniline carbon quantum dot doped carbon nitride material and preparation and application thereof.
Background
Automobiles and buses driven by direct methanol fuel cells are put on the market, and the hydrogen fuel cells prepared by catalytic reforming of methanol are more attractive. Hydrogen has 4 advantages: (1) the combustion product is water, which does not cause any pollution; (2) h2The heat of combustion of (a) is 285.8 kJ/mol; (3) hydrogen is mainly generated by water production through electrolysis, and a large amount of seawater resources are reserved on the earth; (4) renewable, the product is water, which in turn can generate hydrogen gas by electrolysis or photocatalysis. At the same time, hydrogen also has some disadvantages, such as: easy explosion, high production cost, difficult storage and the like. Methanol is considered the best hydrogen source, with three advantages: (1) h2The weight percentage of the catalyst is 12.5 percent, and the hydrogen content is higher; (2) the price is relatively cheap; (3) the source is wide.
At present, the key point of the methanol reforming hydrogen production method is to find a high-efficiency and stable catalyst. Thermal catalysts for methanol and hydrothermal catalytic reactions can be divided into homogeneous catalysts and heterogeneous catalysts. The highest conversion frequency of heterogeneous catalysts to date was 10846 moles hydrogen/hour/(mole platinum). Homogeneous catalysts consisting of coordination compounds of iridium, ruthenium, rhodium, etc., have the advantage of being efficient, but are unstable under the reaction conditions, with an optimum conversion frequency of 4700 moles of hydrogen/hour/(moles of ruthenium) at 70 ℃. Heterogeneous catalysts include copper-based, iron-based, noble metals, and carbon-based catalysts. However, they have disadvantages, such as the high temperatures required for copper and iron based batteries, typically above 200 ℃, the CO concentrations produced exceeding 100ppm can poison the platinum electrodes in fuel cells, and they can also sinter easily at high temperatures. Noble metal catalysts have high catalytic efficiency, but are expensive and difficult to apply to industrial production. The advantage of thermal catalysis is that the reaction rate is high, but the requirement on equipment is high, and in practical application, the reaction is mostly carried out at room temperature, so that the search for a catalyst capable of efficiently catalyzing the reaction of methanol and water at low temperature is necessary.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the carbon nitride material doped with the aniline carbon quantum dots, and preparation and application thereof.
The technical scheme of the invention is as follows:
the invention discloses a preparation method of an aniline carbon quantum dot doped carbon nitride material, which comprises the following steps:
(1) burning aniline, mixing the combustion product with alcohol after complete combustion, and performing ultrasonic dispersion completely to separate aniline carbon quantum dots;
(2) and uniformly mixing the aniline carbon quantum dots and urea, calcining at the temperature of 180-220 ℃ for 2-3 hours, and then calcining at the temperature of 500-550 ℃ for 3-5 hours to obtain the aniline carbon quantum dot doped carbon nitride material.
Further, in the step (1), the fuel at the time of combustion is ethanol, preferably anhydrous ethanol.
Further, in the step (1), the ultrasonic time is 30min-1 h.
Further, in the step (1), the alcohol is ethanol.
Further, in the step (2), the mass ratio of the aniline carbon quantum dots to the urea is 0.08-0.8: 10; preferably, the mass ratio of the aniline carbon quantum dots to the urea is 0.08:10, 0.24:10, 0.30:10, 0.64:10, 0.8: 10.
Further, in the step (2), the temperature rise rate is 0.5-10 ℃/min. Preferably, the rate of temperature rise is 5-10 deg.C/min.
The aniline carbon quantum dot is prepared by a combustion method, the method is simple, the particle size of the prepared aniline carbon quantum dot is 100-200nm, the prepared aniline carbon quantum dot is mixed with urea and then calcined, and the urea becomes carbon nitride after the calcination, so that the carbon nitride material doped with the aniline carbon quantum dot is obtained. Has yellowish fluorescence under the irradiation of ultraviolet light.
The invention also provides the aniline carbon quantum dot doped carbon nitride material prepared by the preparation method.
Furthermore, the particle size of the carbon nitride material doped with the aniline carbon quantum dots is 1-10 μm.
The invention also provides application of the carbon nitride material doped with the aniline carbon quantum dots as a catalyst for hydrogen production by catalytic reforming of methanol.
Further, the catalyst was used under the condition of being protected from light at 60 to 80 ℃.
The invention also provides a method for preparing hydrogen by catalytic reforming of methanol, which comprises the following steps:
the carbon nitride material doped with the aniline carbon quantum dots is added into a methanol aqueous solution and reacts at the temperature of 60-80 ℃ in a dark condition.
Furthermore, the concentration of the carbon nitride material doped with the aniline carbon quantum dots in the methanol aqueous solution is 0.83-3.33 mg/mL.
By the scheme, the invention at least has the following advantages:
the aniline carbon quantum dot-doped carbon nitride material is prepared by a simple method, is porous and loose, and has deepened loose degree along with the increase of the dosage of the aniline carbon quantum dots, and the elements C and N in the material are uniformly distributed.
The carbon nitride material doped with the aniline carbon quantum dots can be used as a catalyst for hydrogen production by catalytic reforming of methanol, and can decompose methanol to produce hydrogen under the condition of low temperature (60-80 ℃) and light shielding.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to make the technical solutions of the present invention practical in accordance with the contents of the specification, the following detailed description is given of preferred embodiments of the present invention with reference to the accompanying drawings.
Drawings
FIG. 1 is a scanning electron microscope image of various materials;
FIG. 2 is C3N4-an element distribution map (mapping) of C, N of 500, and element percentages (EDS);
FIG. 3 is C3N4TEM image, SETM-HAADF image, C and N element distribution maps of 300;
FIG. 4 is C3N4-a TEM image, a SETM-HAADF image, elemental distribution plots of C and N of 500;
FIG. 5 is C3N4TEM image, SETM-HAADF image, elemental distribution plots of C and N of-800;
FIG. 6 is C3N4TEM image of 1000, SETM-HAADF image, element distribution maps of C and N;
FIG. 7 is g-C3N4TEM image, SETM-HAADF image, element distribution diagrams of C and N of (A);
FIG. 8 is a TEM image, SETM-HAADF image, elemental distribution plots of C and N of aniline carbon quantum dots;
FIG. 9 is a graph of solid UV absorption of various materials;
FIG. 10 is a spectrum of UV photoelectron energy of various materials;
FIG. 11 is a graph of Fourier infrared converted spectra of different materials;
FIG. 12 is an XRD diffractogram of various materials;
FIG. 13 is an XPS plot of different materials;
FIG. 14 shows the production H of different materials2、CO2Rate, and methanol conversion profile.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
(1) Pouring 2mL of aniline into a 50mL crucible, using absolute ethyl alcohol as fuel, heating the bottom of the crucible to enable the aniline in the crucible to be combusted until the aniline cannot be combusted. Then absolute ethyl alcohol is added into the crucible till the crucible is nearly full, and the ultrasonic treatment is carried out for 1 hour. And centrifuging to obtain supernatant, namely aniline carbon quantum dots, which are light brown in color. Under the irradiation of ultraviolet lamp, there is yellowish fluorescence. The aniline carbon quantum dots prepared above are spherical and have a diameter of about 100-200 nm.
(2) Adding 300 mu L of liquid aniline carbon quantum dots into 10g of urea, fully and uniformly stirring, then adding a sealant into an opening of a crucible for sealing, placing the crucible in a muffle furnace, preserving heat at 200 ℃ for 2 hours, then preserving heat at 550 ℃ for 3 hours, and increasing the temperature at a rate of 10 ℃/min. Obtaining the aniline carbon quantum dot doped carbon nitride material which is light yellow, and naming the sample as C3N4-300。
Example 2
Aniline carbon quantum dot doped carbon nitride material C was prepared according to the method of example 13 N 4500, except that the liquid aniline carbon quantum dots were added in an amount of 500. mu.L. The product was pale yellow.
Example 3
Aniline carbon quantum dot doped carbon nitride material C was prepared according to the method of example 13 N 4800, except that the liquid aniline carbon quantum dots were added in an amount of 800. mu.L. The product was pale yellow.
Example 4
Aniline carbon quantum dot doped carbon nitride material C was prepared according to the method of example 13 N 41000, except that the liquid aniline carbon quantum dots are added in an amount of 1000. mu.L. The product was pale yellow.
Example 5
Aniline carbon quantum dot doped carbon nitride material C was prepared according to the method of example 13N4-100, except that the liquid aniline carbon quantum dots are added in an amount of 100 μ L.
Comparative example 1
A carbon nitride material was produced in accordance with the method of example 1Materials g-C3N4The difference is that step (1) is omitted, and liquid aniline carbon quantum dots are not added in step (2). The product was pale yellow.
FIGS. 1a-f are g-C in the order3N4Aniline carbon quantum dots, C3N4-300、C3N4-500、C3N4-800、C3N4Scanning electron microscope images of-1000 show that except for aniline carbon quantum dots, other materials are porous and loose. Along with the increase of the doping amount of the aniline carbon quantum dots, the porosity degree of the carbon nitride material doped with the aniline carbon quantum dots is deepened.
FIGS. 2a-C are C in the order of3N4The Mapping, N element Mapping and EDS diagrams of 500 materials are shown, wherein C and N elements in the materials are uniformly distributed, and the mass fractions of C and N are respectively as follows: 38.7% and 61.3%.
FIGS. 3-8 are C in the order of3N4-300、C3N4-500、C3N4-800、C3N4-1000、g-C3N4And TEM images of aniline carbon quantum dots; in each figure, fig. a and b are TEM images of the corresponding sample, fig. C is an SETM-HAADF drawing, fig. d is a partial position enlargement of fig. C, and fig. e and f are element distribution diagrams of C and N, respectively. In FIG. 2, panel b shows a significant lattice spacing of 3.2nm for the (110) plane of carbon nitride.
FIG. 9 is a graph of solid UV absorption for different materials, according to the formula: (α h v) ═ a (h v-Eg)n/2And when n is 1s, a good linear fitting relation exists, which indicates that the band gaps of the samples are direct band gaps. C3N4-300,C3N4-500,C3N4-800,C3N4-1000，g-C3N4The ultraviolet absorption is stronger at 250-375nm, and after the ultraviolet absorption is compounded with the aniline carbon quantum dots, the ultraviolet absorption is weakened, and the direct band gap of the carbon nitride is adjustable and is changed from 2.91 to 3.0ev, which shows that the aniline carbon quantum dots have a certain effect on the adjustment of the band gap of the carbon nitride.
Fig. 10 is a graph of uv electron energy spectra of different materials, according to the formula:
Ec＝Ev–Eg；
EVB＝(21.22-(Ecutoff-Efemi) eV); ec values for different samples can be calculated and the results are shown in table 1.
TABLE 1 results of Ec calculation for different materials
FIG. 11 is a Fourier infrared spectrum of different materials, each product being at 1000-1750cm-1And 3500cm-1Strong absorption between the two indicates that-OH and-NH exist in the product2C ═ O and C ═ C groups; 3500cm-1The absorption peak is mainly H2Hydroxyl peak of O and-NH2；1750cm-1The absorption peaks are C ═ O and C ═ C; 800cm-1The absorption peak is the N-H bending vibration.
Fig. 12 shows XRD diffractograms of different materials with distinct diffraction angles at 2 θ 27.857 °, 32.533 ° and 46.534 ° according to bragg equation n λ 2dsin θ, corresponding to g-C, respectively3N4(PDF #50-1512) of (110), (200) and (111).
FIG. 13 is an XPS plot of different materials, plot a is C3N4Full spectrum of 800d, three clearly visible peaks of C, N, O are visible. Graph b is the O1s graph, 532eV corresponds to the peak of the oxygen element of adsorbed water, and 536eV is the lattice oxygen of the sample. Figure C is a C1s plot with three peaks, the stronger 287.8eV (N-C ═ N) and the weaker being the peak for graphitic carbon, which is often seen in typical carbonaceous materials, and 284.3eV being the standard carbon peak, differing from the standard by 0.2 eV. Panel d is panel N1s, 398.5eV is the sp2 hybrid peak of N-linked C (C — N); 399.7eV is a tertiary N atom formed by N and C atoms: n- (C)3 or a secondary N atom: H-N- (C) 2; 400.3eV is assigned to a quaternary N atom in the benzene ring, wherein the quaternary N atom is linked to three carbon and N atoms; 404.8eV belongs to the excitation peak of pi electrons.
Example 5
Five experiments were performed, each group was performed in parallel for a number of times, 5 mg of the aniline carbon quantum dot-doped carbon nitride material prepared in examples 1 to 5 was mixed with 3mL of water, the mixture was subjected to ultrasonic sealing to disperse the material uniformly, 3mL of methanol was added to each group, the mixture was subjected to ultrasonic sealing, and the mixture was subjected to reaction for 12 hours in a water bath at 60 to 80 ℃ under a sealed condition with protection from light.
FIGS. 14a and b are the average results of hydrogen and carbon dioxide production rates and methanol conversion for different materials, respectively, for a single reaction; the abscissa in the figure represents the added volume of aniline carbon quantum dots in examples 1-5. The result shows that the conversion rate of the methanol is 0.00035 percent at most, and the maximum hydrogen production rate is 13 umol/h/g. From the average test result chart of multiple experiments, the hydrogen production is best when the adding amount of the aniline carbon quantum dots is 500 mu L, and the hydrogen production rate and the adding amount of the aniline carbon quantum dots form a roughly parabolic relation. The ratio of the production rates of carbon dioxide and hydrogen is 1: 3.
the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The application of the carbon nitride material doped with aniline carbon quantum dots as a catalyst for hydrogen production by methanol catalytic reforming is characterized in that the catalyst is used under the condition of keeping out of the sun at the temperature of 60-80 ℃; the preparation method of the aniline carbon quantum dot doped carbon nitride material comprises the following steps:
(1) burning aniline, mixing the combustion product with alcohol after complete combustion, and performing ultrasonic dispersion completely to separate aniline carbon quantum dots;
(2) and uniformly mixing the aniline carbon quantum dots and urea, calcining at the temperature of 180-220 ℃ for 2-3 hours, and then calcining at the temperature of 500-550 ℃ for 3-5 hours to obtain the aniline carbon quantum dot doped carbon nitride material.
2. Use according to claim 1, characterized in that: in step (1), the fuel is ethanol when combusted.
3. Use according to claim 1, characterized in that: in the step (1), the ultrasonic time is 30min-1 h.
4. Use according to claim 1, characterized in that: in step (1), the alcohol is ethanol.
5. Use according to claim 1, characterized in that: in the step (2), the mass ratio of the aniline carbon quantum dots to the urea is 0.08-0.8: 10.
6. Use according to claim 1, characterized in that: in the step (2), the heating rate is 0.5-10 ℃/min.
7. The use of claim 1, wherein the aniline carbon quantum dot-doped carbon nitride material is added into methanol aqueous solution and reacted at 60-80 ℃ under the condition of keeping out of the light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259390.3A CN110871100B (en) | 2019-12-10 | 2019-12-10 | Aniline carbon quantum dot doped carbon nitride material and preparation and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259390.3A CN110871100B (en) | 2019-12-10 | 2019-12-10 | Aniline carbon quantum dot doped carbon nitride material and preparation and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110871100A CN110871100A (en) | 2020-03-10 |
| CN110871100B true CN110871100B (en) | 2022-07-12 |
Family
ID=69718375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911259390.3A Active CN110871100B (en) | 2019-12-10 | 2019-12-10 | Aniline carbon quantum dot doped carbon nitride material and preparation and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110871100B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116174006B (en) * | 2023-02-13 | 2023-09-15 | 徐州工程学院 | Preparation method of precursor pretreatment modified carbon nitride catalytic material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745836A (en) * | 2013-12-29 | 2014-04-23 | 渤海大学 | A method for preparing a g-C3N4/carbon quantum dot composite electrode |
| CN104609393A (en) * | 2015-02-03 | 2015-05-13 | 中国科学院合肥物质科学研究院 | Simple preparation method of fluorescent carbon quantum dots |
| CN108855191A (en) * | 2018-07-12 | 2018-11-23 | 苏州大学 | Visible light-responded hybrid aerogel and preparation method thereof and the application in exhaust-gas treatment |
| CN108855182A (en) * | 2018-06-05 | 2018-11-23 | 中国地质大学（武汉） | A kind of porous g-C of element doping3N4The preparation method of nanometer sheet |
| CN109550049A (en) * | 2018-12-03 | 2019-04-02 | 浙江大学 | Application of the carbon quantum dot-class graphite phase carbon nitride catalysis material in preparation sterilization and the drug for promoting skin scar healing |
-
2019
- 2019-12-10 CN CN201911259390.3A patent/CN110871100B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745836A (en) * | 2013-12-29 | 2014-04-23 | 渤海大学 | A method for preparing a g-C3N4/carbon quantum dot composite electrode |
| CN104609393A (en) * | 2015-02-03 | 2015-05-13 | 中国科学院合肥物质科学研究院 | Simple preparation method of fluorescent carbon quantum dots |
| CN108855182A (en) * | 2018-06-05 | 2018-11-23 | 中国地质大学（武汉） | A kind of porous g-C of element doping3N4The preparation method of nanometer sheet |
| CN108855191A (en) * | 2018-07-12 | 2018-11-23 | 苏州大学 | Visible light-responded hybrid aerogel and preparation method thereof and the application in exhaust-gas treatment |
| CN109550049A (en) * | 2018-12-03 | 2019-04-02 | 浙江大学 | Application of the carbon quantum dot-class graphite phase carbon nitride catalysis material in preparation sterilization and the drug for promoting skin scar healing |
Non-Patent Citations (1)
| Title |
|---|
| Highly mesoporous carbon nitride photocatalysts for efficient and stable overall water splitting;Yujiang Dou等;《Applied Surface Science》;20191127;第509卷;1-8 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110871100A (en) | 2020-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Han et al. | Rational design of high‐concentration Ti3+ in porous carbon‐doped TiO2 nanosheets for efficient photocatalytic ammonia synthesis | |
| Kumar et al. | Perovskite-structured CaTiO3 coupled with g-C3N4 as a heterojunction photocatalyst for organic pollutant degradation | |
| Schubert et al. | Immobilization of Co, Mn, Ni and Fe oxide co-catalysts on TiO 2 for photocatalytic water splitting reactions | |
| Ong et al. | Direct growth of carbon nanotubes on Ni/TiO 2 as next generation catalysts for photoreduction of CO 2 to methane by water under visible light irradiation | |
| Obregón et al. | Improved H2 production of Pt-TiO2/g-C3N4-MnOx composites by an efficient handling of photogenerated charge pairs | |
| Ong et al. | Self-assembly of nitrogen-doped TiO 2 with exposed {001} facets on a graphene scaffold as photo-active hybrid nanostructures for reduction of carbon dioxide to methane | |
| Etacheri et al. | Oxygen rich titania: A dopant free, high temperature stable, and visible‐light active anatase photocatalyst | |
| Nam et al. | Physical property and photo-catalytic activity of sulfur doped TiO2 catalysts responding to visible light | |
| Yadav et al. | Green synthesis of AgZnO nanoparticles: Structural analysis, hydrogen generation, formylation and biodiesel applications | |
| Lin et al. | The Synergistic Effect of Nitrogen Dopant and Calcination Temperature on the Visible‐Light‐Induced Photoactivity of N‐Doped TiO2 | |
| Fan et al. | NiCo2O4/g‐C3N4 Heterojunction Photocatalyst for Efficient H2 Generation | |
| de Tacconi et al. | Photocatalytic Generation of Syngas Using Combustion‐Synthesized Silver Bismuth Tungstate | |
| Yan et al. | Low-temperature synthesis of mesoporous boron carbides as metal-free photocatalysts for enhanced CO 2 reduction and generation of hydroxyl radicals | |
| Zhou et al. | Controllable doping of nitrogen and tetravalent niobium affords yellow and black calcium niobate nanosheets for enhanced photocatalytic hydrogen evolution | |
| Dong et al. | Facile one-pot synthesis of Mg-doped gC 3 N 4 for photocatalytic reduction of CO 2 | |
| CN113680372B (en) | Heat-assisted preparation method and application of graphite-phase carbon nitride nanosheets | |
| Faria et al. | Enhancing Nb2O5 activity for CO2 photoreduction through Cu nanoparticles cocatalyst deposited by DC-magnetron sputtering | |
| CN111215118A (en) | Sodium-boron double-doped nano-layered graphite-like phase carbon nitride and preparation method and application thereof | |
| Lee et al. | Cu–Ni core–shell bimetallic cocatalyst decorated polymeric carbon nitride for highly efficient and selective methane production from photocatalytic CO2 reduction | |
| Muñoz‐Batista et al. | Sunlight‐Driven Hydrogen Production Using an Annular Flow Photoreactor and g‐C3N4‐Based Catalysts | |
| Li et al. | Influence of the precipitation pH on the compositions and properties of Bi-based oxyiodide photocatalysts | |
| Basaleh et al. | CoAl2O4–g-C3N4 nanocomposite photocatalysts for powerful visible-light-driven hydrogen production | |
| Kavil et al. | Efficient photocatalytic reduction of CO 2 present in seawater into methanol over Cu/C-Co-doped TiO 2 nanocatalyst under UV and natural sunlight | |
| CN110368999B (en) | Catalyst, preparation method and application thereof | |
| CN110871100B (en) | Aniline carbon quantum dot doped carbon nitride material and preparation 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |