CN107899591A - A kind of photo-catalytic sterilizing and air-cleaning agent and preparation method thereof - Google Patents

A kind of photo-catalytic sterilizing and air-cleaning agent and preparation method thereof Download PDF

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Publication number
CN107899591A
CN107899591A CN201710983849.9A CN201710983849A CN107899591A CN 107899591 A CN107899591 A CN 107899591A CN 201710983849 A CN201710983849 A CN 201710983849A CN 107899591 A CN107899591 A CN 107899591A
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sns
nanometer sheet
tio
individual layer
photo
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刘玉峰
郑新峰
房永征
张娜
赵国营
侯京山
李倩倩
张若愚
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Shanghai Institute of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/04Sulfides
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16Heavy metals; Compounds thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063Titanium; Oxides or hydroxides thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/19Catalysts containing parts with different compositions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39Photocatalytic properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/391Physical properties of the active metal ingredient
    • B01J35/393Metal or metal oxide crystallite size
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/396Distribution of the active metal ingredient

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Abstract

The present invention provides a kind of photo-catalytic sterilizing and air-cleaning agent, including SnS2Nanometer sheet and TiO2Nano particle;TiO2Nano-particles reinforcement is in SnS2The surface of nanometer sheet;TiO2Nano particle is in SnS2The surface of nanometer sheet is in point-like dense distribution.Present invention also offers the preparation method of above-mentioned photo-catalytic sterilizing and air-cleaning agent, weighs SnS2Powder, is placed in N, and in N solvent dimethylformamides, after stirring, ultrasound is peeled off in ice-water bath, obtained solution then is carried out centrifugal treating, it is individual layer SnS to take supernatant liquor2Nanometer sheet solution;To individual layer SnS2TiCl is added in nanometer sheet solution3, ethanol is then added, which is moved into autoclave and is heated, finally centrifuges, obtains photo-catalytic sterilizing and air-cleaning agent.The photo-catalytic sterilizing and air-cleaning agent pattern that method using the present invention obtains is good, with easy to operate, yield height, the advantages such as manufacturing cost is low.

Description

A kind of photo-catalytic sterilizing and air-cleaning agent and preparation method thereof
Technical field
The invention belongs to chemical field, is related to a kind of catalyst, specifically a kind of photo-catalytic sterilizing and air-cleaning agent And preparation method thereof.
Background technology
TiO2There is catalytic activity, excellent chemical and photochemical stability, but TiO to many photochemical reactions2It is a kind of Broad-band gap (~3.2eV) semiconductor, can only be low to the utilization rate of solar energy by the ultraviolet excitation of λ≤387.5nm, with e-And h+Recombination velocity is fast, the shortcoming such as quantum efficiency is low.In order to make full use of solar energy, in recent years researchers (including metal and nonmetal doping, precious metal surface precipitation, semiconductor be multiple and dye sensitization etc.) makees in terms of modification Extensive work, to improve TiO2The stability and photocatalytic activity of nano-photocatalyst, also achieve many progress.
SnS2It is that a kind of n-type semiconductor, energy gap are about 2.1eV, there is preferable heat endurance and inoxidizability And also there is good stability in acid and neutral solution, therefore it will have good potential practicality as photochemical catalyst Value.SnS2As a kind of narrow gap semiconductor, composite material can be compounded to form with wider band gap, when relatively low using energy Light irradiation when, the semiconductor of narrow bandgap is excited first produces electronics, and under the action of electric field, light induced electron easily migrates To conduction band on, the separation in light induced electron and hole is realized, so as to improve photocatalysis efficiency.
Semiconductors coupling is that have matched band structure with narrow with gap semiconductors based on wide band gap semiconducter, the two is with suitable The separation of photogenerated charge can be effectively improved after ratio is compound, extends the spectral response range of wide band gap semiconducter, photocatalysis Activity, which is usually better than basic reason of the single semiconductors coupling semiconductor with higher photocatalytic activity, partly to be led compound Two kinds of semiconductor components have put forward the separative efficiency in light induced electron and hole by electric charge transfer between interface in body.Therefore, as light The passage of raw electric charge transfer, the light that the interfacial structure in composite semiconductor between two kinds of different components drastically influence semiconductor are urged Change performance.
Based on this, it is intended that by adjusting the photon capture ability of composite material, optoelectronic transformation efficiency and novel structure come Improve its catalytic performance in visible region, and prepare the SnS of lifting photocatalysis performance2Composite nano materials.
The content of the invention
For above-mentioned technical problem of the prior art, the present invention provides a kind of photo-catalytic sterilizing and air-cleaning agent and its Preparation method, this photo-catalytic sterilizing and air-cleaning agent and preparation method thereof is mainly used in TiO2Photocatalytic applications in Air disinfection cleans.
The present invention provides a kind of photo-catalytic sterilizing and air-cleaning agent, including SnS2Nanometer sheet and TiO2Nano particle;It is described TiO2Nano-particles reinforcement is in the SnS2The surface of nanometer sheet;The TiO2Nano particle is in the SnS2The surface of nanometer sheet In point-like dense distribution.
Present invention also offers a kind of above-mentioned preparation method of photo-catalytic sterilizing and air-cleaning agent, include the following steps:
1) one prepares individual layer SnS2The step of nanometer sheet solution, weigh SnS2Powder, it is molten to be placed in n,N-Dimethylformamide In agent, after magnetic agitation, ultrasound is peeled off in ice-water bath, and obtained solution then is carried out centrifugal treating, takes supernatant liquor i.e. For individual layer SnS2Nanometer sheet solution;
2) one in individual layer SnS2TiO is loaded in nanometer sheet2The step of, to individual layer SnS2Added in nanometer sheet solution TiCl3, then add ethanol, individual layer SnS2Nanometer sheet solution and TiCl3Material ratio with ethanol is 1-10mL:10-20mmol: 50mL, which is moved into autoclave and is heated, and the temperature in pyroreaction kettle is 150 DEG C~180 DEG C, finally centrifugation point From, obtain load TiO2Individual layer SnS2Nanometer sheet solution, i.e. photo-catalytic sterilizing and air-cleaning agent.
Further, ultrasonic temperature control is at 5-10 DEG C in ice-water bath in step 1), splitting time 3-6h.
Further, load TiO in step 2)2Individual layer SnS2Nanometer sheet solution, which is scattered in absolute ethyl alcohol, to be preserved, load TiO2Individual layer SnS2The volume ratio of nanometer sheet solution and absolute ethyl alcohol is 1~10mL:100mL.
Further, in step 1), SnS2Powder and the mass volume ratio of n,N-Dimethylformamide are 0.5g:100~ 300mL。
The present invention makes SnS using the hot method of hydro-thermal2Homoepitaxial goes out point-like TiO in nanometer sheet2Nano particle.One kind is obtained Individual layer SnS2Nanometer sheet loads TiO2Nano-particles reinforcement photo-catalytic sterilizing and air-cleaning agent, the TiO2Nano particle uniformly and Largely it is distributed in the individual layer SnS2The surface of nanometer sheet, has good compound in nanometer sheet, obtains good compound pattern Material.
The present invention is compared with prior art, its technological progress is significant.The present invention provides a kind of individual layer SnS2Nanometer Piece loads TiO2Composite photo catalyst sterilizing and air-cleaning agent, the present invention have process conditions are simple, yield is high, and manufacturing cost is low etc. Advantage.Obtain the TiO of individual layer load2Nano particle is uniform in size, the advantages that being easy to be stabilized.The technology can extensive use In fields such as photocatalysis, air cleaner, nanometer technologies.
Brief description of the drawings
Fig. 1 is the individual layer SnS that the present invention is prepared using hydro-thermal method2Nanometer sheet loads TiO2Optical photograph.
Fig. 2 is individual layer SnS in the present invention2Nanometer sheet loads TiO2Raman light collection of illustrative plates.
Embodiment
Embodiment 1:
1)SnS2The stripping of nanometer sheet:Weigh the SnS of 0.5g2Powder is placed in the n,N-Dimethylformamide solvent of 200mL In, after magnetic agitation, the ultrasound 3h in ice-water bath, 3 DEG C of exfoliation temperature, then carries out centrifugal treating by obtained solution, takes Layer clear liquid is individual layer SnS2Nanometer sheet solution.
2) individual layer SnS2TiO in nanometer sheet2Load:To 10mL individual layers SnS220mmol is added in nanometer sheet solution TiCl3, then add 50mL ethanol, will the solution move into autoclave in heat 150 DEG C, finally centrifuge remember Load TiO2Individual layer SnS2Nanometer sheet solution, by it using volume ratio as 1:10 are scattered in absolute ethyl alcohol.As can be seen from Figure 1 Individual layer SnS2Nanometer sheet is rendered as sheet, strip;The TiO of surface attachment2Particle, size uniformity, dispersiveness is preferably.By Raman Peak understands SnS2In 300cm-1Left and right peak intensity is weaker, this and individual layer SnS2The Raman of nanometer sheet matches.
Embodiment 2:
1)SnS2The stripping of nanometer sheet:Weigh the SnS of 0.5g2Powder is placed in the n,N-Dimethylformamide solvent of 200mL In, after magnetic agitation, the ultrasound 6h in ice-water bath, 10 DEG C of exfoliation temperature, then carries out centrifugal treating by obtained solution, takes Layer clear liquid is individual layer SnS2Nanometer sheet solution.
2) individual layer SnS2TiO in nanometer sheet2Load:To 1mL individual layers SnS210mmol is added in nanometer sheet solution TiCl3, then add 50mL ethanol, will the solution move into autoclave in heat 180 DEG C, finally centrifuge remember Load TiO2Individual layer SnS2Nanometer sheet solution, by it using volume ratio as 1:100 are scattered in absolute ethyl alcohol.
Embodiment 3:
1)SnS2The stripping of nanometer sheet:Weigh the SnS of 0.5g2Powder is placed in the n,N-Dimethylformamide solvent of 200mL In, after magnetic agitation, the ultrasound 3h in ice-water bath, 5 DEG C of exfoliation temperature, then carries out centrifugal treating by obtained solution, takes Layer clear liquid is individual layer SnS2Nanometer sheet solution.
2) individual layer SnS2TiO in nanometer sheet2Load:To 5mL individual layers SnS215mmol is added in nanometer sheet solution TiCl3, then add 50mL ethanol, will the solution move into autoclave in heat 170 DEG C, finally centrifuge remember Load TiO2Individual layer SnS2Nanometer sheet solution, by it using volume ratio as 5:100 are scattered in absolute ethyl alcohol.
Embodiment 4:
1)SnS2The stripping of nanometer sheet:Weigh the SnS of 0.5g2Powder is placed in the n,N-Dimethylformamide solvent of 200mL In, after magnetic agitation, the ultrasound 3h in ice-water bath, 10 DEG C of exfoliation temperature, then carries out centrifugal treating by obtained solution, takes Layer clear liquid is individual layer SnS2Nanometer sheet solution.
2) individual layer SnS2TiO in nanometer sheet2Load:To 1mL individual layers SnS210mmol is added in nanometer sheet solution TiCl3, then add 50mL ethanol, will the solution move into autoclave in heat 180 DEG C, finally centrifuge remember Load TiO2Individual layer SnS2Nanometer sheet solution, by it using volume ratio as 10:100 are scattered in absolute ethyl alcohol.
Embodiment 5:
1)SnS2The stripping of nanometer sheet:Weigh the SnS of 0.5g2Powder is placed in the n,N-Dimethylformamide solvent of 200mL In, after magnetic agitation, the ultrasound 6h in ice-water bath, 5 DEG C of exfoliation temperature, then carries out centrifugal treating by obtained solution, takes Layer clear liquid is individual layer SnS2Nanometer sheet solution.
2) individual layer SnS2TiO in nanometer sheet2Load:To 1mL individual layers SnS210mmol is added in nanometer sheet solution TiCl3, then add 50mL ethanol, will the solution move into autoclave in heat 180 DEG C, finally centrifuge remember Load TiO2Individual layer SnS2Nanometer sheet solution, by it using volume ratio as 8:100 are scattered in absolute ethyl alcohol.

Claims (5)

  1. A kind of 1. photo-catalytic sterilizing and air-cleaning agent, it is characterised in that:Including SnS2Nanometer sheet and TiO2Nano particle;It is described TiO2Nano-particles reinforcement is in the SnS2The surface of nanometer sheet;The TiO2Nano particle is in the SnS2The surface of nanometer sheet In point-like dense distribution.
  2. 2. the preparation method of a kind of photo-catalytic sterilizing and air-cleaning agent described in claim 1, it is characterised in that including following step Suddenly:
    1)One prepares individual layer SnS2The step of nanometer sheet solution, weigh SnS2Powder, is placed in n,N-Dimethylformamide solvent In, after magnetic agitation, ultrasound is peeled off in ice-water bath, and obtained solution then is carried out centrifugal treating, takes the supernatant liquor to be Individual layer SnS2Nanometer sheet solution;
    2)One in individual layer SnS2TiO is loaded in nanometer sheet2The step of, to individual layer SnS2TiCl is added in nanometer sheet solution3, then Add ethanol, individual layer SnS2Nanometer sheet solution and TiCl3Material ratio with ethanol is 1-10mL:10-20mmol:50mL, this is molten Liquid is moved into autoclave and heated, and the temperature in pyroreaction kettle is 150 DEG C~180 DEG C, finally centrifuges, is loaded TiO2The individual layer SnS of particle2Nanometer sheet solution, i.e. photo-catalytic sterilizing and air-cleaning agent.
  3. A kind of 3. photo-catalytic sterilizing and air-cleaning agent according to claim 1, it is characterised in that:Step 1)In middle ice-water bath Ultrasonic temperature control is at 5-10 DEG C, splitting time 3-6h.
  4. A kind of 4. photo-catalytic sterilizing and air-cleaning agent according to claim 1, it is characterised in that:Step 2)Middle load TiO2 Individual layer SnS2Nanometer sheet solution, which is scattered in absolute ethyl alcohol, to be preserved, and loads TiO2Individual layer SnS2Nanometer sheet solution and anhydrous second The volume ratio of alcohol is 1~10mL:100mL.
  5. A kind of 5. photo-catalytic sterilizing and air-cleaning agent according to claim 1, it is characterised in that:Step 1)In, SnS2Powder Mass volume ratio with n,N-Dimethylformamide is 0.5 g:100~300 mL.
CN201710983849.9A 2017-10-20 2017-10-20 A kind of photo-catalytic sterilizing and air-cleaning agent and preparation method thereof Pending CN107899591A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109569568A (en) * 2018-11-14 2019-04-05 中国矿业大学 A kind of core-shell structure BiO2-x@TiO2Heterojunction photocatalysis material and the preparation method and application thereof
CN110028098A (en) * 2019-05-31 2019-07-19 南京倍格电子科技有限公司 A kind of liquid phase stripping method preparation high concentration SnS2 nanometer sheet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1788794A (en) * 2004-12-13 2006-06-21 谢家忠 Nanometer photo-catalytic sterilizing and air-cleaning agent
US20140083323A1 (en) * 2012-09-25 2014-03-27 Empire Technology Development Llc Oxidizing agents on pigments
CN104888753A (en) * 2015-05-28 2015-09-09 陕西科技大学 Tin disulfide/titanium dioxide compound photocatalyst and preparation method thereof
CN106000422A (en) * 2016-06-01 2016-10-12 中国科学院上海硅酸盐研究所 Titanium dioxide/tin sulfide composite material, preparation method and application thereof
CN107175097A (en) * 2017-06-22 2017-09-19 陕西科技大学 A kind of stannic disulfide parcel titanium dioxide composite photocatalyst and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1788794A (en) * 2004-12-13 2006-06-21 谢家忠 Nanometer photo-catalytic sterilizing and air-cleaning agent
US20140083323A1 (en) * 2012-09-25 2014-03-27 Empire Technology Development Llc Oxidizing agents on pigments
CN104888753A (en) * 2015-05-28 2015-09-09 陕西科技大学 Tin disulfide/titanium dioxide compound photocatalyst and preparation method thereof
CN106000422A (en) * 2016-06-01 2016-10-12 中国科学院上海硅酸盐研究所 Titanium dioxide/tin sulfide composite material, preparation method and application thereof
CN107175097A (en) * 2017-06-22 2017-09-19 陕西科技大学 A kind of stannic disulfide parcel titanium dioxide composite photocatalyst and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109569568A (en) * 2018-11-14 2019-04-05 中国矿业大学 A kind of core-shell structure BiO2-x@TiO2Heterojunction photocatalysis material and the preparation method and application thereof
CN110028098A (en) * 2019-05-31 2019-07-19 南京倍格电子科技有限公司 A kind of liquid phase stripping method preparation high concentration SnS2 nanometer sheet
CN110028098B (en) * 2019-05-31 2020-04-07 南京倍格电子科技有限公司 High-concentration SnS prepared by liquid-phase stripping method2Nano-sheet

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Application publication date: 20180413