CN101007650A - Method for rendering cadmium sulfide film surface hydrophility using illumination - Google Patents
Method for rendering cadmium sulfide film surface hydrophility using illumination Download PDFInfo
- Publication number
- CN101007650A CN101007650A CNA2007100628701A CN200710062870A CN101007650A CN 101007650 A CN101007650 A CN 101007650A CN A2007100628701 A CNA2007100628701 A CN A2007100628701A CN 200710062870 A CN200710062870 A CN 200710062870A CN 101007650 A CN101007650 A CN 101007650A
- Authority
- CN
- China
- Prior art keywords
- film
- cds
- cadmium sulfide
- illumination
- film surface
- 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.)
- Granted
Links
Classifications
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Catalysts (AREA)
Abstract
The invention discloses a making method of hydrophilic surface of cadmium sulfide film through irradiation in the surface physical chemical domain, which comprises the following steps: making CdS film between 100 and 500nm; drying film surface; irradiating CdS film through ultraviolet light with power between 200 and 1000w; irradiating the sample for 3-6h.
Description
Technical field
The present invention relates to the method that a kind of film surface is handled, this kind technology is applicable to the surface treatment of the photocatalyst material and the solar cell material of degrading waste water Litter, belongs to the Surface Physical Chemistry field of material.
Background technology
Along with the continuous development of human economy and society, Sustainable development has become the important issue of various countries' development.People also seek environmental pollution and destructive minimizes always when developing the economy, so people are seeking the approach that pollutes of effectively administering always, and wherein a kind of approach is exactly that the objectionable impurities in waste water and the waste gas is carried out disaggregating treatment.Photocatalysis treatment is one of most important method in this approach, it can utilize the energy of light to quicken the objectionable impurities decomposition, and photocatalyst material is the most critical key element in this method, had many kinds of materials to be found and had photocatalysis performance, wherein most typical is exactly titanium dioxide (TiO
2).Yet, because TiO
2Optical band gap at 3.0eV, so TiO in the sunlight
2The light wave band that can absorb and utilize is considerably less comparatively speaking.This just illustrates, at abundant visible light wave range, TiO
2Can not utilize fully.One of ways of addressing this issue is exactly to TiO
2Material carries out compound.In numerous selectable matrix materials, Cadmium Sulfide (CdS) is exactly that a kind of ideal is selected.
CdS be a kind of optical band gap 2.5eV than low-gap semiconductor, wavelength is less than or equal to 495nm just can be with the valence band electron excitation to conduction band, like this with CdS and TiO
2Carry out compoundly, just can make the higher composite photocatalyst of efficient.
Owing to be applied in the degraded of waste water and toxic dye individual layer TiO
2Thereby photocatalysis thin film has the performance that good Superhydrophilic helps its photocatalysis performance.Using CdS to TiO so
2After compound, just two requirements are proposed matrix material: one be the band gap of material in visible-range, this CdS satisfies; Wish the same TiO of this CdS film in addition
2The same, can have super hydrophilicity simultaneously.Yet because the CdS film is in process of growth, the coarse injustice that CdS forms various defect structures and surface easily causes CdS to be in a kind of hydrophobic state usually.This has just proposed the CdS film is carried out the surface-treated requirement, its objective is the hydrophilicity of realizing the CdS film, thereby reaches its requirement as photocatalyst material.
Summary of the invention
The surface treatment method that the purpose of this invention is to provide a kind of CdS film, to reduce the contact angle of film surface and water, make the wetting property of film be converted to hydrophilicly, lay the first stone for strengthening its photocatalysis performance and other possible photovoltaic applications from primary is hydrophobic.
In order to address the above problem, the present invention uses the lamp that sends UV-light to shining, and different films is carried out the different time irradiation show that the CdS film obviously reduces the contact angle of water, realizes from hydrophobic to super hydrophilic transformation.We studies show that, UV-irradiation can make the CdS surface produce more electron-hole pair, and at this moment the hole can react with the atom among the original CdS and form the ion room.These defectives near the surface have caused more chemisorption, have caused hydrophilic.
The present invention utilizes illumination to realize that the CdS film be is characterized in that to super hydrophilic transformation by hydrophobic, may further comprise the steps:
Prepare 100 nanometers to 500 nano CdS (Cadmium Sulfide) films, keep the drying of film surface, prepared CdS film is shone with the lamp that sends UV-light, the power of this lamp is between 200 watts-1000 watts, and to sample irradiation 3 to 6 hours.
Use the contact angle instrument that the contact angle of CdS sample is characterized.
Compared with the prior art, the invention is characterized in: by simple photo-irradiation treatment, utilize the combination of photo-generated carrier and the defective of film own to increase the chemical adsorption capacity of sample, realized first for sulfide surface, particularly the CdS surface by hydrophobic to hydrophilic transformation, for improving its photocatalysis performance and and TiO
2Compound laying a good foundation.
Utilize above technology, carry out photo-irradiation treatment at different CdS films, CdS film contact angle before handling is about 140 °, and the contact angle test shows experimental result after the processing is between 2 °-34 °, and this method has realized that the CdS film is by hydrophobic transformation to hydrophily.
In addition, we find under study for action, shine after 6 hours, and the CdS film has been in super hydrophily, if irradiation time prolongs again, film still keeps super hydrophily, but the contact angle of film and water no longer changes.Therefore consider that from energy-conservation angle we no longer prolong the irradiation time to film.
Embodiment
Below further introduce the present invention: embodiment with three examples of implementation and adopt mercury lamp (wavelength 250nm-450nm belongs to the UV-light zone) that UV-light is provided, other lamp that can produce UV-light also should belong to scope of the present invention.
Embodiment one:
Select thickness to be about the cadmium sulphide membrane of 100nm, pre-irradiation should keep the film surface drying.The sample of preparation was placed on the irradiation of 500W mercury lamp after 6 hours, and the contact angle of this sample and water reaches 2 °, presents the excess of export hydrophily.
Embodiment two:
Selecting thickness is the cadmium sulphide membrane of 300nm, keeps its surface drying, and irradiation is 3 hours under the 200W mercury lamp, the contact angle of MEASUREMENTS OF THIN and water once more, and angle is 34 °, film is in hydrophily.
Embodiment three:
At thickness is the 500nm cadmium sulphide membrane, keeps its surface drying, with 1000W mercury lamp irradiation 4 hours, measures its contact angle, and measuring result is 10 °.Show that film surface has presented super hydrophily.
Claims (1)
1, a kind of method of utilizing illumination to make the cadmium sulphide membrane surface hydrophilic is characterized in that, may further comprise the steps:
Prepare 100 nanometers to 500 nano CdS (Cadmium Sulfide) films, keep the drying of film surface, prepared CdS film is shone with the lamp that sends UV-light, the power of this lamp is between 200 watts-1000 watts, and to sample irradiation 3 to 6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100628701A CN100448780C (en) | 2007-01-19 | 2007-01-19 | Method for rendering cadmium sulfide film surface hydrophility using illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100628701A CN100448780C (en) | 2007-01-19 | 2007-01-19 | Method for rendering cadmium sulfide film surface hydrophility using illumination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101007650A true CN101007650A (en) | 2007-08-01 |
| CN100448780C CN100448780C (en) | 2009-01-07 |
Family
ID=38696358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100628701A Expired - Fee Related CN100448780C (en) | 2007-01-19 | 2007-01-19 | Method for rendering cadmium sulfide film surface hydrophility using illumination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100448780C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845944A (en) * | 2016-04-05 | 2016-08-10 | 华南师范大学 | Visible-light-excited nano CdS/TiO<2> enhanced ascorbic acid/glucose fuel cell |
| CN107649150A (en) * | 2017-09-28 | 2018-02-02 | 福州大学 | A kind of preparation method and applications of the Cd/CdS hetero-junctions visible light catalysts rich in sulphur room |
| CN109942007A (en) * | 2019-04-29 | 2019-06-28 | 淮北师范大学 | A method of difunctional light-catalyzed reaction is converted using ammonia synthesis-biomass and prepares ammonia |
| CN116618064A (en) * | 2023-05-23 | 2023-08-22 | 江西省科学院能源研究所 | Preparation method of CdS nanosheet photocatalyst with photoinduced defects and application of CdS nanosheet photocatalyst in dehydrocoupling reaction of hydrosilane and alcohols |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318136C (en) * | 2005-03-02 | 2007-05-30 | 山东恒冠塑胶有限公司 | Nanometer catalyst for used under sunlight and its prepn. method |
| CN100346457C (en) * | 2006-01-17 | 2007-10-31 | 湖南师范大学 | Production and producer for cadmium sulfide |
-
2007
- 2007-01-19 CN CNB2007100628701A patent/CN100448780C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845944A (en) * | 2016-04-05 | 2016-08-10 | 华南师范大学 | Visible-light-excited nano CdS/TiO<2> enhanced ascorbic acid/glucose fuel cell |
| CN105845944B (en) * | 2016-04-05 | 2018-07-31 | 华南师范大学 | A kind of excited by visible light nano-tube/CdS/TiO2Enhance ascorbic acid/glucose fuel cell |
| CN107649150A (en) * | 2017-09-28 | 2018-02-02 | 福州大学 | A kind of preparation method and applications of the Cd/CdS hetero-junctions visible light catalysts rich in sulphur room |
| CN109942007A (en) * | 2019-04-29 | 2019-06-28 | 淮北师范大学 | A method of difunctional light-catalyzed reaction is converted using ammonia synthesis-biomass and prepares ammonia |
| CN116618064A (en) * | 2023-05-23 | 2023-08-22 | 江西省科学院能源研究所 | Preparation method of CdS nanosheet photocatalyst with photoinduced defects and application of CdS nanosheet photocatalyst in dehydrocoupling reaction of hydrosilane and alcohols |
| CN116618064B (en) * | 2023-05-23 | 2024-01-23 | 江西省科学院能源研究所 | Preparation method of CdS nanosheet photocatalyst with photoinduced defects and application of CdS nanosheet photocatalyst in dehydrocoupling reaction of hydrosilane and alcohols |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100448780C (en) | 2009-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yang et al. | Carbon-based absorbers for solar evaporation: Steam generation and beyond | |
| Xia et al. | Porphyrin covalent organic framework (POF)‐Based interface engineering for solar steam generation | |
| Haider et al. | Photocatalytic activity of nickel oxide | |
| Lu et al. | Constructing atomic layer gC 3 N 4–CdS nanoheterojunctions with efficiently enhanced visible light photocatalytic activity | |
| Jiang et al. | Construction of amorphous Ta2O5/g-C3N4 nanosheet hybrids with superior visible-light photoactivities for organic dye degradation and mechanism insight | |
| Kite et al. | Nanostructured TiO2 thin films by chemical bath deposition method for high photoelectrochemical performance | |
| Zhao et al. | Influence of water content in mixed solvent on surface morphology, wettability, and photoconductivity of ZnO thin films | |
| Tan et al. | Enhanced dye‐sensitized solar cells performance of ZnO nanorod arrays grown by low‐temperature hydrothermal reaction | |
| CN100448780C (en) | Method for rendering cadmium sulfide film surface hydrophility using illumination | |
| Lu et al. | Electrodeposition of TiO2/CdSe heterostructure films and photocatalytic degradation of methylene blue | |
| CN108579768B (en) | Few-layer MoS2Modified Ag-TiO2Preparation method of nano composite film | |
| Yuan et al. | Enhanced light absorption of amorphous silicon thin film by substrate control and ion irradiation | |
| Qiao et al. | Fabrication of monopile polymer foams via rotating gas foaming: hybrid applications in solar‐powered interfacial evaporation and water remediation | |
| Zhang et al. | Hydrogen evolution promotion of Au‐nanoparticles‐decorated TiO2 nanotube arrays prepared by dip‐loading approach | |
| Alamdari et al. | Immobilization of ZnO: Ga nanocrystals in a polystyrene/cellulose matrix: A novel hybrid nanocomposite photocatalyst for future photo energy application | |
| Gultepe et al. | The effect of Al element on structural, optical, electrical, surface and photocatalytic properties of Sol-gel derived ZnO films | |
| CN103779499A (en) | Graphene composite film material interspersed with Ag nanoparticles and preparation | |
| Singh et al. | Synthesis of nanostructured TiO2 thin films with highly enhanced photocatalytic activity by atom beam sputtering | |
| Bai et al. | Preparation of CuSe-PDA/gC 3 N 4 and its visible-light photocatalytic performance to dye degradation | |
| CN108786872B (en) | Flower-shaped WS2/Bi2O2CO3Synthesis method and application of heterojunction photocatalytic material | |
| Yu et al. | Preparation and photoelectrocatalytic properties of polyaniline/layered manganese oxide self-assembled film | |
| Adak et al. | Mesoporous aluminium titanate: Superhydrophilic and photocatalytic antireflective coating for solar glass covers with superior mechanical properties | |
| CN103073048A (en) | Method for preparing patterned ZnO film by liquid phase self-assembly technology | |
| Xu et al. | Carbon‐Bridged g‐C3N4 Nanosheets for High Hydrogen Evolution Rate by a Two‐Step Gaseous Treatment | |
| Ge et al. | Controllable TiO 2 heterostructure with carbon hybrid materials for enhanced photoelectrochemical performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20100219 |