CN108325519A - A kind of preparation method and applications of the cotton fiber shape titanium dioxide of supported platinum nano particle - Google Patents
A kind of preparation method and applications of the cotton fiber shape titanium dioxide of supported platinum nano particle Download PDFInfo
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- CN108325519A CN108325519A CN201810050067.4A CN201810050067A CN108325519A CN 108325519 A CN108325519 A CN 108325519A CN 201810050067 A CN201810050067 A CN 201810050067A CN 108325519 A CN108325519 A CN 108325519A
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 99
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229920000742 Cotton Polymers 0.000 title claims abstract description 55
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 25
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000001257 hydrogen Substances 0.000 claims abstract description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 12
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 51
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000003054 catalyst Substances 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- 235000019441 ethanol Nutrition 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 229910052724 xenon Inorganic materials 0.000 claims description 4
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910002621 H2PtCl6 Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims 2
- 150000002148 esters Chemical class 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 6
- 239000011941 photocatalyst Substances 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 238000006862 quantum yield reaction Methods 0.000 description 2
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002082 metal nanoparticle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
A kind of preparation method and applications of the cotton fiber shape titanium dioxide of supported platinum nano particle.The present invention relates to a kind of preparation method and applications of composite photo-catalyst.The present invention is to solve the TiO of existing method preparation2The area at/Pt composite photo-catalyst schottky junctions interface is small, and electron-transport path is single, and charge transmission speed is slow, the low problem of separation of charge efficiency.Method：Using cotton fiber as template, preparing has two-dimensional drape shape TiO2, and Pt nano-particles are deposited on its surface.The cotton fiber shape titanium dioxide of the supported platinum nano particle of the present invention is used for Photocatalyzed Hydrogen Production.
Description
Technical field
The present invention relates to a kind of preparation method and applications of composite photo-catalyst.
Background technology
Energy and environment problem is that topic and the world today eternal on Green Sustainable road are most challenged
Research topic.Currently, solar energy is converted directly into chemical energy source, the key point to solve the above problems has been considered as it.Hydrogen Energy
Being can be as instead of most potential one of the green clean energy resource of traditional energy (oil, coal etc.).Therefore hydrogen can be generated
The light-catalyzed reaction of energy is increasingly taken seriously.Titanium dioxide (TiO2) as a kind of photochemical catalyst of most actual application value
It has been a great concern and approves in the past few decades.Unquestionably, TiO2Still have in photocatalysis field considerable
Development prospect.However, most of light induced electron or hole recombine in the path for moving to surface, only least a portion of electricity
Son and hole participate in reaction, and this greatly reduces TiO2Photocatalyzed Hydrogen Production efficiency.Therefore, its light induced electron how is improved
The separative efficiency in hole pair is the important topic of following a period of time new energy materials field.
It is well known that in TiO2Surface depositing noble metal nano-particle can form Schottky (Schottky) knot, can be with
Greatly improve the separative efficiency of photo-generate electron-hole pair.Platinum (Pt), since it has smaller work content and lower overpotential,
It is one of the most commonly used noble metal of research.Currently, about TiO2The report of/Pt composite photo-catalysts is commonplace, achievement
Also more significantly.However, charge transfer efficiency is still a bottleneck.The structure at interface largely decides transmission effect
Rate reacts important hence for the catalysis occurred in activity composition cell surface.Therefore rational structure and adjusting
Interfacing relationship is the important directions of the following catalyst development between composite photo-catalyst.
Invention content
The present invention is to solve the TiO of existing method preparation2The area at/Pt composite photo-catalyst schottky junctions interface
Small, electron-transport path is single, and charge transmission speed is slow, the low problem of separation of charge efficiency, and provides a kind of Supported Pt Nanoparticles and receive
The preparation method and applications of the cotton fiber shape titanium dioxide of rice corpuscles.
A kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle specifically carries out according to the following steps
's：
One, absorbent cotton is placed in stirring 5min~15min in absolute ethyl alcohol, it is 25% then to instill mass fraction thereto
~28% NH3·H2After O, ultrasonic 10min~20min under stiring under conditions of butyl titanate is added, obtain mixed liquor；
Mixed liquor is placed in 35 DEG C~50 DEG C of stirred in water bath 8h~16h, absorbent cotton is taken out from mixed liquor, first uses ethyl alcohol clear
Wash 3~5 times uses deionized water cleaning to wash 3~5 times again, and 8h~16h is then dried under conditions of temperature is 40 DEG C~60 DEG C,
Dry cotton is obtained, dry cotton is placed in Muffle furnace and calcines 3h~6h under conditions of temperature is 450 DEG C~550 DEG C, is obtained white
Color powder；The quality of the absorbent cotton and the volume ratio of absolute ethyl alcohol are 1g:(300~350) mL；The quality of the absorbent cotton with
The NH that mass fraction is 25%~28%3·H2The volume ratio of O is 1g:(1~1.5) mL；The quality of the absorbent cotton and metatitanic acid four
The volume ratio of butyl ester is 1g:(0.1~0.5) mL；
Two, the white powder ultrasonic disperse for obtaining step 1 is in methyl alcohol mixed liquor, then H is added thereto2PtCl6It is molten
Liquid, mixing are placed on irradiation 20min~40min under 300w xenon sources, and obtained grey suspension centrifuges, and solid is first
Clean 3~5 times using ethyl alcohol uses deionized water cleaning to wash 3~5 times again, obtains gray solid, is 40 DEG C~60 DEG C in temperature
Under conditions of dry 8h~16h, obtain gray solid powder both be TiO2/ Pt photochemical catalysts；The methyl alcohol mixed liquor is by going
Ionized water and methanol by volume 4:1 is mixed to get；The H2PtCl6The molar concentration of solution is 19.3mmol/L；The step
The quality of rapid one obtained white powder and the volume ratio of methyl alcohol mixed liquor are 1g:(400~600) mL；The TiO2/ Pt light is urged
The load capacity of Pt is 0.3wt%~1.1wt% in agent.
The cotton fiber shape titanium dioxide of supported platinum nano particle prepared by the above method is used for Photocatalyzed Hydrogen Production, specific
Step is：By TiO2/ Pt photochemical catalysts are scattered in deionized water, then ultrasound 5min~15min after methanol is added thereto, to
It is passed through nitrogen removal oxygen in reaction system, then reaction system is placed under sunlight and is irradiated.
Beneficial effects of the present invention：
For the present invention using cotton fiber as template, preparing has two-dimensional drape shape TiO2, and Pt nano-particles are deposited on it
Surface.By increasing TiO2The area for increasing schottky junction interface with Pt contacts area provides more electron-transport paths,
Accelerate charge transmission speed, improves separation of charge efficiency.When Pt load capacity is 0.9wt%, Photocatalyzed Hydrogen Production amount reaches highest,
For 4698 μm of olh-1g-1, apparent quantum yield reaches 40.56%.
Description of the drawings
Fig. 1 is the TiO that one step 1 of embodiment obtains2Transmission electron microscope picture；
Fig. 2 is the CFT-Pt that embodiment one obtains0.9High-resolution-ration transmission electric-lens figure；
Fig. 3 is the Photocatalyzed Hydrogen Production curve graph of the sample of different Pt load capacity, wherein 1 is CFT, 2 be CFT-Pt0.3, 3 are
CFT-Pt0.5, 4 be CFT-Pt0.7, 5 be CFT-Pt0.9, 6 be CFT-Pt1.1。
Specific implementation mode
Specific implementation mode one：A kind of system of the cotton fiber shape titanium dioxide of supported platinum nano particle of present embodiment
What Preparation Method specifically carried out according to the following steps：
One, absorbent cotton is placed in stirring 5min~15min in absolute ethyl alcohol, it is 25% then to instill mass fraction thereto
~28% NH3·H2After O, ultrasonic 10min~20min under stiring under conditions of butyl titanate is added, obtain mixed liquor；
Mixed liquor is placed in 35 DEG C~50 DEG C of stirred in water bath 8h~16h, absorbent cotton is taken out from mixed liquor, first uses ethyl alcohol clear
Wash 3~5 times uses deionized water cleaning to wash 3~5 times again, and 8h~16h is then dried under conditions of temperature is 40 DEG C~60 DEG C,
Dry cotton is obtained, dry cotton is placed in Muffle furnace and calcines 3h~6h under conditions of temperature is 450 DEG C~550 DEG C, is obtained white
Color powder；The quality of the absorbent cotton and the volume ratio of absolute ethyl alcohol are 1g:(300~350) mL；The quality of the absorbent cotton with
The NH that mass fraction is 25%~28%3·H2The volume ratio of O is 1g:(1~1.5) mL；The quality of the absorbent cotton and metatitanic acid four
The volume ratio of butyl ester is 1g:(0.1~0.5) mL；
Two, the white powder ultrasonic disperse for obtaining step 1 is in methyl alcohol mixed liquor, then H is added thereto2PtCl6It is molten
Liquid, mixing are placed on irradiation 20min~40min under 300w xenon sources, and obtained grey suspension centrifuges, and solid is first
Clean 3~5 times using ethyl alcohol uses deionized water cleaning to wash 3~5 times again, obtains gray solid, is 40 DEG C~60 DEG C in temperature
Under conditions of dry 8h~16h, obtain gray solid powder both be TiO2/ Pt photochemical catalysts；The methyl alcohol mixed liquor is by going
Ionized water and methanol by volume 4:1 is mixed to get；The H2PtCl6The molar concentration of solution is 19.3mmol/L；The step
The quality of rapid one obtained white powder and the volume ratio of methyl alcohol mixed liquor are 1g:(400~600) mL；The TiO2/ Pt light is urged
The load capacity of Pt is 0.3wt%~1.1wt% in agent.
Specific implementation mode two：The present embodiment is different from the first embodiment in that：Mixed liquor is set in step 1
In 45 DEG C of stirred in water bath 12h.Other steps and parameter are same as the specific embodiment one.
Specific implementation mode three：The present embodiment is different from the first and the second embodiment in that：In temperature in step 1
12h is dried under conditions of being 50 DEG C.Other steps and parameter are the same as one or two specific embodiments.
Specific implementation mode four：Unlike one of present embodiment and specific implementation mode one to three：It will in step 1
Dry cotton is placed in Muffle furnace calcines 4h under conditions of temperature is 500 DEG C.Other steps and parameter and specific implementation mode one
It is identical to one of three.
Specific implementation mode five：Unlike one of present embodiment and specific implementation mode one to four：Institute in step 1
State the NH that the quality of absorbent cotton is 25%~28% with mass fraction3·H2The volume ratio of O is 0.6g:0.8mL.Other steps and
Parameter is identical as one of specific implementation mode one to four.
Specific implementation mode six：Unlike one of present embodiment and specific implementation mode one to five：Institute in step 1
The volume ratio of the quality and butyl titanate of stating absorbent cotton is 1g:0.25mL.Other steps and parameter and specific implementation mode one
It is identical to one of five.
Specific implementation mode seven：Unlike one of present embodiment and specific implementation mode one to six：Institute in step 2
State TiO2The load capacity of Pt is 0.5wt% in/Pt photochemical catalysts.Other steps and one of parameter and specific implementation mode one to six
It is identical.
Specific implementation mode eight：Unlike one of present embodiment and specific implementation mode one to seven：Institute in step 2
State TiO2The load capacity of Pt is 0.7wt% in/Pt photochemical catalysts.Other steps and one of parameter and specific implementation mode one to seven
It is identical.
Specific implementation mode nine：Unlike one of present embodiment and specific implementation mode one to eight：Institute in step 2
State TiO2The load capacity of Pt is 0.9wt% in/Pt photochemical catalysts.Other steps and one of parameter and specific implementation mode one to eight
It is identical.
Specific implementation mode ten：The cotton fiber shape titanium dioxide of present embodiment supported platinum nano particle is used for photocatalysis
Hydrogen is produced, the specific steps are：By TiO2/ Pt photochemical catalysts are scattered in deionized water, then ultrasound after methanol is added thereto
5min~15min is passed through nitrogen removal oxygen into reaction system, then reaction system is placed under sunlight and is irradiated.
Beneficial effects of the present invention are verified by following embodiment：
Embodiment one：A kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle is specifically by following
What step carried out：
One, 0.6g absorbent cotton is placed in 200mL absolute ethyl alcohols and stirs 5min, then instill 0.8mL mass point thereto
The NH that number is 25%~28%3·H2After O, ultrasonic 15min under stiring under conditions of be added 0.15mL butyl titanates, obtain
Mixed liquor；Mixed liquor is placed in 45 DEG C of stirred in water bath 12h, absorbent cotton is taken out from mixed liquor, first ethyl alcohol is used to clean 3
It uses deionized water cleaning to wash 3~5 times again~5 times, then dries 12h under conditions of temperature is 50 DEG C, obtain dry cotton, it will
Dry cotton is placed in Muffle furnace calcines 4h under conditions of temperature is 500 DEG C, and it is TiO to obtain white powder2, it is labeled as CFT；
Two, the white powder ultrasonic disperse for obtaining 0.1g step 1 obtains TiO in 50mL methyl alcohol mixed liquors2Dispersion
Liquid；Take 5 parts of TiO2A certain amount of H is added in dispersion liquid thereto respectively2PtCl6Solution, make the load capacity of Pt be respectively 0.3,0.5,
0.7,0.9,1.1wt%, is placed under 300w xenon sources after mixing and irradiates 30min, five obtained part grey suspension, centrifugation
Separation, solid first use ethyl alcohol to clean 3~5 times and use deionized water cleaning to wash again 3~5 times, five parts of gray solids are obtained, in temperature
Degree dries 12h under conditions of being 50 DEG C, and it is TiO to obtain five parts of gray solid powder both2/ Pt photochemical catalysts, different Pt load capacity
Sample be respectively labeled as CFT-Ptx(x:Represent 0.3,0.5,0.7,0.9 or 1.1).
Three, CFT and five part of CFT-Pt of the above-mentioned preparations of 40mg is weighed respectivelyxMonodispersed is added in 40mL deionized waters
10mL methanol, ultrasonic 10min.Then nitrogen is passed through into system to remove the oxygen of dissolving.Then system is placed in simulation too
It under sunlight shines, is sampled every 1h, the hydrogen output in detecting system.
Fig. 1 is the TiO that one step 1 of embodiment obtains2Transmission electron microscope picture；Its pattern is the micron tube of accordion.From figure
In it can be seen that the soft lamellar structure of its bending, can provide better anchored site for the load of Pt nano-particles.
Fig. 2 is the CFT-Pt that embodiment one obtains0.9High-resolution-ration transmission electric-lens figure, clearly find out two kinds of lattices in figure
Striped, d=0.22nm and d=0.34nm correspond to (111) crystal face and TiO of Pt respectively2(101) crystal face.Prove Pt nanoparticles
Son successfully loads to TiO2Surface.
Fig. 3 is the Photocatalyzed Hydrogen Production curve graph of the sample of different Pt load capacity, wherein 1 is CFT, 2 be CFT-Pt0.3, 3 are
CFT-Pt0.5, 4 be CFT-Pt0.7, 5 be CFT-Pt0.9, 6 be CFT-Pt1.1；When Pt load quality scores are 0.9%, photocatalysis
Hydrogen output reaches highest, is 4698 μm of ol h-1g-1, apparent quantum yield reaches 40.56%.
Claims (10)
1. a kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle, it is characterised in that supported platinum nano grain
What the preparation method of the cotton fiber shape titanium dioxide of son specifically carried out according to the following steps：
One, absorbent cotton is placed in absolute ethyl alcohol stirring 5min~15min, then instill thereto mass fraction be 25%~
28% NH3·H2After O, ultrasonic 10min~20min under stiring under conditions of butyl titanate is added, obtain mixed liquor；It will
Mixed liquor is placed in 35 DEG C~50 DEG C of stirred in water bath 8h~16h, and absorbent cotton is taken out from mixed liquor, first ethyl alcohol is used to clean
It uses deionized water cleaning to wash 3~5 times again 3~5 times, 8h~16h is then dried under conditions of temperature is 40 DEG C~60 DEG C, is obtained
To dry cotton, dry cotton is placed in Muffle furnace and calcines 3h~6h under conditions of temperature is 450 DEG C~550 DEG C, obtains white
Powder；The quality of the absorbent cotton and the volume ratio of absolute ethyl alcohol are 1g:(300~350) mL；The quality and matter of the absorbent cotton
Measure the NH that score is 25%~28%3·H2The volume ratio of O is 1g:(1~1.5) mL；The quality of the absorbent cotton and four fourth of metatitanic acid
The volume ratio of ester is 1g:(0.1~0.5) mL；
Two, the white powder ultrasonic disperse for obtaining step 1 is in methyl alcohol mixed liquor, then H is added thereto2PtCl6Solution mixes
Conjunction is placed on irradiation 20min~40min under 300w xenon sources, and obtained grey suspension centrifuges, and solid first uses second
Alcohol cleans 3~5 times and deionized water cleaning is used to wash again 3~5 times, obtains gray solid, the condition for being 40 DEG C~60 DEG C in temperature
Lower drying 8h~16h, it is TiO to obtain gray solid powder both2/ Pt photochemical catalysts；The methyl alcohol mixed liquor is by deionized water
With methanol by volume 4:1 is mixed to get；The H2PtCl6The molar concentration of solution is 19.3mmol/L；The step 1 obtains
The quality of the white powder arrived and the volume ratio of methyl alcohol mixed liquor are 1g:(400~600) mL；The TiO2In/Pt photochemical catalysts
The load capacity of Pt is 0.3wt%~1.1wt%.
2. a kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle according to claim 1,
It is characterized in that in step 1 for mixed liquor being placed in 45 DEG C of stirred in water bath 12h.
3. a kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle according to claim 1,
It is characterized in that in step 1 drying 12h under conditions of temperature is 50 DEG C.
4. a kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle according to claim 1,
It is characterized in that in step 1 dry cotton being placed in Muffle furnace and calcines 4h under conditions of temperature is 500 DEG C.
5. a kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle according to claim 1,
It is characterized in that the NH that the quality of absorbent cotton described in step 1 is 25%~28% with mass fraction3·H2The volume ratio of O is
0.6g:0.8mL。
6. a kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle according to claim 1,
The volume ratio of the quality and butyl titanate that are characterized in that absorbent cotton described in step 1 is 1g:0.25mL.
7. a kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle according to claim 1,
It is characterized in that TiO described in step 22The load capacity of Pt is 0.5wt% in/Pt photochemical catalysts.
8. a kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle according to claim 1,
It is characterized in that TiO described in step 22The load capacity of Pt is 0.7wt% in/Pt photochemical catalysts.
9. a kind of preparation method of the cotton fiber shape titanium dioxide of supported platinum nano particle according to claim 1,
It is characterized in that TiO described in step 22The load capacity of Pt is 0.9wt% in/Pt photochemical catalysts.
10. the application of the cotton fiber shape titanium dioxide of supported platinum nano particle prepared by method as described in claim 1, special
Sign is that the cotton fiber shape titanium dioxide of supported platinum nano particle is used for Photocatalyzed Hydrogen Production, the specific steps are：By TiO2/Pt
Photochemical catalyst is scattered in deionized water, then ultrasound 5min~15min after methanol is added thereto, and nitrogen is passed through into reaction system
Gas removes oxygen, and then reaction system is placed under sunlight and is irradiated.
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| CN201810050067.4A CN108325519B (en) | 2018-01-18 | 2018-01-18 | Preparation method and application of cotton fibrous titanium dioxide loaded with platinum nanoparticles |
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| CN201810050067.4A CN108325519B (en) | 2018-01-18 | 2018-01-18 | Preparation method and application of cotton fibrous titanium dioxide loaded with platinum nanoparticles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109704435A (en) * | 2019-01-07 | 2019-05-03 | 浙江财经大学 | A kind of sewage water treatment method based on graphene photocatalysis net |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102120184A (en) * | 2011-01-25 | 2011-07-13 | 中国科学院山西煤炭化学研究所 | Noble metal-carrying titanium dioxide catalyst and preparation method and use thereof |
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