CN109592703A - A kind of CuO/Cu2O-La2O3The preparation method of multiphase complex sol - Google Patents
A kind of CuO/Cu2O-La2O3The preparation method of multiphase complex sol Download PDFInfo
- Publication number
- CN109592703A CN109592703A CN201811566326.5A CN201811566326A CN109592703A CN 109592703 A CN109592703 A CN 109592703A CN 201811566326 A CN201811566326 A CN 201811566326A CN 109592703 A CN109592703 A CN 109592703A
- Authority
- CN
- China
- Prior art keywords
- cuo
- colloidal sol
- nanometer
- sol
- solid content
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0037—Specially adapted to detect a particular component for NOx
Abstract
The present invention relates to gas sensitive fields, it is desirable to provide a kind of CuO/Cu2O‑La2O3The preparation method of multiphase complex sol.It include: by nanometer CuO colloidal sol and nanometer Cu2After O colloidal sol reacts at 60~120 DEG C, restricted clearance molecule is added；After being sufficiently mixed uniformly, a nanometer La is added dropwise2O3Colloidal sol；Then solation is carried out under the conditions of 25~50 DEG C and react 8~14h, finally obtain CuO/Cu2O‑La2O3Multiphase complex sol.The present invention is using Nano sol particle and rare earth oxide as modified constituent element, utilize nano active effect and the unique physicochemical property of rare earth, high dispersive type multiphase composite Nano colloidal sol is prepared in restricted clearance molecular structure, solves the problems, such as the easy to reunite of Conventional nano colloidal sol.Controllable preparation as can be further realized high quality, the multiphase composite Nano film layer of homogenization using centrifugal atomization coating technique, can effectively promote material to NOxThe sensitivity of gas, response-recovery characteristic.
Description
Technical field
The present invention relates to gas sensitive fields, and in particular to a kind of CuO/Cu2O-La2O3The preparation side of multiphase complex sol
Method.
Background technique
Atmosphere pollution seriously threatens the health and existence of the mankind, and study of metal oxide gas sensor is because its equipment is simple, volume
It is small, response is fast, high sensitivity, it is at low cost the advantages that, become the effective means of pernicious gas in detection atmosphere.And as gas sensitive element
The core of part, what gas sensitive decide gas sensor is detected and used performance.Conventional metal oxide gas sensitive have compared with
The SnO early found2, ZnO, alpha-ferric oxide and γ iron oxide etc..But the gas sensitive of the single constituent element of tradition is in detection gas kind
It is had some limitations in class and sensitivity, for example sensitivity is low, selectivity is not high enough etc., so some researchers are then led to
The characteristics such as overdoping microelement such as rare earth element, the detection sensitivity for adding different oxides etc. to improve gas sensitive.
Nano material is due to it is with nano effects such as high-specific surface area, high chemical active sites in the Gao Ling of gas sensitive
There are some superiorities on for sensitivity.The particle size of material particles is smaller, and the quantity and energy for participating in gas-sensitive reaction are also got over
Greatly, the gas-sensitive property showed is also more significant.Therefore, accurately control gas sensitive at be grouped as, microscopic appearance, crystalline substance
The chemical property such as grain partial size, crystallinity, doping constituent element will be helpful to prepare sensitivity, selectivity, stability and response recovery
The excellent gas sensor of the evaluation indexes such as characteristic.
Summary of the invention
The technical problem to be solved by the present invention is to overcome deficiency in the prior art, provide a kind of CuO/Cu2O-La2O3It is more
The preparation method of phase complex sol.
In order to solve the technical problem, solution of the invention is:
A kind of CuO/Cu is provided2O-La2O3The preparation method of multiphase complex sol, comprising the following steps:
(1) according to CuO and Cu2The molar ratio of O takes nanometer CuO colloidal sol and nanometer Cu for 1: 12Reaction is added in O colloidal sol together
In kettle, 4~18h is reacted under the conditions of 60~120 DEG C；
(2) reaction product is imported into round-bottomed flask, restricted clearance molecule is added under agitation；Wait be sufficiently mixed uniformly
Afterwards, a nanometer La is added dropwise2O3Colloidal sol；Then solation is carried out under the conditions of 25~50 DEG C and react 8~14h, finally obtain CuO/
Cu2O-La2O3Multiphase complex sol；
The restricted clearance molecule accounts for CuO, Cu2O and La2O3The molar percentage of colloidal sol total solid content is 1~3%, nanometer
La2O3La in colloidal sol2O3Account for CuO, Cu2O and La2O3The molar percentage of colloidal sol total solid content is 9~22%.
In the present invention, the solid content of the nanometer CuO colloidal sol is 0.5%.
In the present invention, the nanometer Cu2The solid content of O colloidal sol is 2%.
In the present invention, the nanometer La2O3The solid content of colloidal sol is 1.5%.
In the present invention, the restricted clearance molecule is tannic acid, gallic acid or polyethylene glycol (PEG2000).
In the present invention, the stirring refers to magnetic agitation.
Inventive principle description:
The present invention is prepared in restricted clearance molecular structure using nano-dispersed combination rare-earth-doped modification complex technique
The CuO/Cu2O-La2O3 multiphase composite Nano colloidal sol of polymolecularity.It can be used further using the Nano sol as presoma
Centrifugal atomization realizes the uniform coating of Nano sol, and it is extensive to show excellent sensitivity and response-to Pollution Gas NOx
Multiple characteristic.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention utilizes nano active effect using Nano sol particle and rare earth oxide as modified constituent element
With the unique physicochemical property of rare earth, high dispersive type CuO/Cu is prepared in restricted clearance molecular structure2O-La2O3Multiphase is compound
Nano sol solves the problems, such as the easy to reunite of Conventional nano colloidal sol.
(2) the obtained CuO/Cu of the present invention is utilized2O-La2O3Multiphase complex sol can be plated further using centrifugal atomization
Membrane technology realizes the CuO/Cu of high quality, homogenization2O-La2O3The controllable preparation of multiphase composite Nano coating, effectively promotes material
Material is to NOxThe sensitivity of gas, response-recovery characteristic.
Specific embodiment
Heretofore described nanometer CuO colloidal sol, nanometer Cu2O colloidal sol, nanometer La2O3Colloidal sol is the prior art, can be adopted
It is prepared with conventional preparation means.
The CuO/Cu that the present invention prepares2O-La2O3Multiphase complex sol can be further used for gas sensitive coating
Preparation.The coating is to be sprayed and obtained to study of metal oxide gas sensor using centrifugal atomization, and specific example is as follows:
Use CuO/Cu prepared by the present invention2O-La2O3Multiphase complex sol, with centrifugal atomization to metal oxide gas
Quick element carries out spraying operation, obtains gas sensitive coating in element surface.The operating parameter of centrifugal atomizing spraying is optional: from
3000~5000r/min of heart rate；0.2~0.65MPa of atomization air pressure；100~300mm of spray distance.
Embodiment 1
(1) according to CuO and Cu2The molar ratio of O takes nanometer CuO colloidal sol and nanometer Cu for 1: 12Reaction is added in O colloidal sol together
In kettle, 18h is reacted under the conditions of 60 DEG C；
(2) reaction product is imported into round-bottomed flask, restricted clearance molecule is added under agitation；Wait be sufficiently mixed uniformly
Afterwards, a nanometer La is added dropwise2O3Colloidal sol；Then solation is carried out under the conditions of 25 DEG C and react 14h, finally obtain CuO/Cu2O-
La2O3Multiphase complex sol；
The nanometer Cu2The solid content of O colloidal sol is 2%, nanometer La2O3The solid content of colloidal sol is 1.5%, nanometer CuO colloidal sol
Solid content be 0.5%.Restricted clearance molecule is tannic acid, accounts for CuO, Cu2O and La2O3The molar percentage of colloidal sol total solid content
It is 1%；Nanometer La2O3La in colloidal sol2O3Account for CuO, Cu2O and La2O3The molar percentage of colloidal sol total solid content is 9%.
The preparation and performance evaluation of coating:
(1) using the obtained CuO/Cu of the embodiment2O-La2O3Multiphase complex sol, with centrifugal atomization to metal oxide
Gas sensor carries out spraying operation, obtains gas sensitive coating in element surface.The operating parameter of centrifugal atomizing spraying are as follows: from
Heart rate 3000r/min；Atomization air pressure 0.2MPa；Spray distance 100mm.
(2) to the CuO/Cu produced2O-La2O3Multiphase composite Nano coating carries out NOxGas-sensitive property (including the spirit of gas
Sensitivity, response-recovery characteristic etc.) evaluation detection.
Embodiment 2
(1) according to CuO and Cu2The molar ratio of O takes nanometer CuO colloidal sol and nanometer Cu for 1: 12Reaction is added in O colloidal sol together
In kettle, 4h is reacted under the conditions of 120 DEG C；
(2) reaction product is imported into round-bottomed flask, restricted clearance molecule is added under agitation；Wait be sufficiently mixed uniformly
Afterwards, a nanometer La is added dropwise2O3Colloidal sol；Then solation is carried out under the conditions of 50 DEG C and react 8h, finally obtain CuO/Cu2O-
La2O3Multiphase complex sol；
The solid content of the nanometer CuO colloidal sol is 0.5%, nanometer Cu2The solid content of O colloidal sol is 2%, nanometer La2O3Colloidal sol
Solid content be 1.5%.Restricted clearance molecule is gallic acid, accounts for CuO, Cu2O and La2O3The Mole percent of colloidal sol total solid content
Than being 3%；Nanometer La2O3La in colloidal sol2O3Account for CuO, Cu2O and La2O3The molar percentage of colloidal sol total solid content is 22%.
The preparation and performance evaluation of coating:
(1) using the obtained CuO/Cu of the embodiment2O-La2O3Multiphase complex sol, with centrifugal atomization to metal oxide
Gas sensor carries out spraying operation, obtains gas sensitive coating in element surface.The operating parameter of centrifugal atomizing spraying are as follows: from
Heart rate 5000r/min；Atomization air pressure 0.65MPa；Spray distance 300mm.
(2) to the CuO/Cu produced2O-La2O3Multiphase composite Nano coating carries out NOxGas-sensitive property (including the spirit of gas
Sensitivity, response-recovery characteristic etc.) evaluation detection.
Embodiment 3
(1) according to CuO and Cu2The molar ratio of O takes nanometer CuO colloidal sol and nanometer Cu for 1: 12Reaction is added in O colloidal sol together
In kettle, 12h is reacted under the conditions of 90 DEG C；
(2) reaction product is imported into round-bottomed flask, restricted clearance molecule is added under agitation；Wait be sufficiently mixed uniformly
Afterwards, a nanometer La is added dropwise2O3Colloidal sol；Then solation is carried out under the conditions of 40 DEG C and react 10h, finally obtain CuO/Cu2O-
La2O3Multiphase complex sol；
The solid content of the nanometer CuO colloidal sol is 0.5%, nanometer Cu2The solid content of O colloidal sol is 2%, nanometer La2O3Colloidal sol
Solid content be 1.5%.Restricted clearance molecule is polyethylene glycol (PEG2000), accounts for CuO, Cu2O and La2O3Colloidal sol total solid content
Molar percentage be 2%, nanometer La2O3La in colloidal sol2O3Account for CuO, Cu2O and La2O3The molar percentage of colloidal sol total solid content
It is 12%.
The preparation and performance evaluation of coating:
(1) using the obtained CuO/Cu of the embodiment2O-La2O3Multiphase complex sol, with centrifugal atomization to metal oxide
Gas sensor carries out spraying operation, obtains gas sensitive coating in element surface.The operating parameter of centrifugal atomizing spraying are as follows: from
Heart rate 4000r/min；Atomization air pressure 0.45MPa；Spray distance 200mm.
(2) to the CuO/Cu produced2O-La2O3Multiphase composite Nano coating carries out NOxGas-sensitive property (including the spirit of gas
Sensitivity, response-recovery characteristic etc.) evaluation detection.
Implement reference examples 4
(1) according to CuO and Cu2The molar ratio of O takes nanometer CuO colloidal sol and nanometer Cu for 1: 12Reaction is added in O colloidal sol together
In kettle, 12h is reacted under the conditions of 90 DEG C；
(2) reaction product is imported into round-bottomed flask, restricted clearance molecule is added under agitation；Wait be sufficiently mixed uniformly
Solation is carried out under the conditions of 40 DEG C afterwards and reacts 10h, finally obtains CuO/Cu2O complex sol；
The solid content of the nanometer CuO colloidal sol is 0.5%, nanometer Cu2The solid content of O colloidal sol is 2%.Restricted clearance molecule
It is tannic acid, accounts for CuO and Cu2The molar percentage of O colloidal sol total solid content is 1.5%, nanometer La2O3La in colloidal sol2O3Mole
Percentage is 0%.
The preparation and performance evaluation of coating:
(1) using the obtained CuO/Cu of the embodiment2O complex sol, with centrifugal atomization to study of metal oxide gas sensor
Spraying operation is carried out, obtains coating in element surface.The operating parameter of centrifugal atomizing spraying are as follows: centrifugation rate 3500r/min；
Atomization air pressure 0.25MPa；Spray distance 150mm.
(2) to the CuO/Cu produced2O composite Nano coating carries out NOxGas gas-sensitive property (including sensitivity, response-
Recovery characteristics etc.) evaluation detection.
The present invention utilizes nano active effect and the unique physicochemical property of rare earth, successfully makes in restricted clearance molecular structure
Standby high dispersive type CuO/Cu out2O-La2O3Multiphase composite Nano colloidal sol, solves the problems, such as the easy to reunite of Conventional nano colloidal sol.Simultaneously
The CuO/Cu of high quality, homogenization can be realized using centrifugal atomization coating technique2O-La2O3Multiphase composite Nano coating can
Control it is standby, effectively promoted material to NOxThe sensitivity of gas, response-recovery characteristic.And from embodiment the result shows that:
Using gas sensitive made from embodiment 1 and embodiment 2 to NO in the present inventionxSensitivity, the performance of response-recovery characteristic of gas
It is more excellent.
Test result is as follows for the gas-sensitive property of each embodiment shown in table:
The gas-sensitive property the performance test results of each embodiment of table 1
Specific embodiments of the present invention are described in detail above, but it is merely an example, the present invention is simultaneously unlimited
It is formed on particular embodiments described above.To those skilled in the art, any couple of present invention carries out equivalent modifications and
Substitution is also all among scope of the invention.
Claims (6)
1. a kind of CuO/Cu2O-La2O3The preparation method of multiphase complex sol, which comprises the following steps:
(1) according to CuO and Cu2The molar ratio of O takes nanometer CuO colloidal sol and nanometer Cu for 1: 12O colloidal sol is added in reaction kettle together,
4~18h is reacted under the conditions of 60~120 DEG C；
(2) reaction product is imported into round-bottomed flask, restricted clearance molecule is added under agitation；After being sufficiently mixed uniformly,
A nanometer La is added dropwise2O3Colloidal sol；Then solation is carried out under the conditions of 25~50 DEG C and react 8~14h, finally obtain CuO/
Cu2O-La2O3Multiphase complex sol；
The restricted clearance molecule accounts for CuO, Cu2O and La2O3The molar percentage of colloidal sol total solid content is 1~3%, nanometer La2O3
La in colloidal sol2O3Account for CuO, Cu2O and La2O3The molar percentage of colloidal sol total solid content is 9~22%.
2. the method according to claim 1, wherein the solid content of the nanometer CuO colloidal sol is 0.5%.
3. the method according to claim 1, wherein the nanometer Cu2The solid content of O colloidal sol is 2%.
4. the method according to claim 1, wherein the nanometer La2O3The solid content of colloidal sol is 1.5%.
5. the method according to claim 1, wherein the restricted clearance molecule be tannic acid, gallic acid or
Polyethylene glycol (PEG2000).
6. the method according to claim 1, wherein the stirring refers to magnetic agitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566326.5A CN109592703B (en) | 2018-12-18 | 2018-12-18 | CuO/Cu2O-La2O3Preparation method of multiphase composite sol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566326.5A CN109592703B (en) | 2018-12-18 | 2018-12-18 | CuO/Cu2O-La2O3Preparation method of multiphase composite sol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109592703A true CN109592703A (en) | 2019-04-09 |
| CN109592703B CN109592703B (en) | 2021-01-15 |
Family
ID=65963880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811566326.5A Active CN109592703B (en) | 2018-12-18 | 2018-12-18 | CuO/Cu2O-La2O3Preparation method of multiphase composite sol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109592703B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199953A (en) * | 2021-12-15 | 2022-03-18 | 吉林大学 | Based on Cu2Nitrogen dioxide sensor of O-CuO graded structure micron flower sensitive material and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63310720A (en) * | 1987-06-12 | 1988-12-19 | Fujikura Ltd | Production of superconducting powder |
| CN1445195A (en) * | 2002-11-20 | 2003-10-01 | 上海维来新材料科技有限公司 | Complex super fine powder of copper-zinc compound as well as its preparing technique and usage |
| CN101927152A (en) * | 2010-03-12 | 2010-12-29 | 大连海鑫化工有限公司 | High-strength gas purifying and separating adsorbent as well as preparation and application thereof |
| CN102659166A (en) * | 2012-05-21 | 2012-09-12 | 兰州大学 | Method for preparing CuO/Cu2O block composite material with room-temperature ferromagnetism |
| US20140262811A1 (en) * | 2013-03-12 | 2014-09-18 | Ut-Battelle, Llc | Controllable reductive method for synthesizing metal-containing particles |
| CN106590728A (en) * | 2016-12-15 | 2017-04-26 | 浙江工业大学 | Method or removing thiophenic sulfur from fuel oil by taking Cu2O/SiO2-Al2O3 composite aerogel as adsorbent |
| CN106669716A (en) * | 2016-12-07 | 2017-05-17 | 盐城工学院 | Preparation method of Cu2O/CuO/WO3 composite heterojunction thin film |
| CN107033946A (en) * | 2017-03-14 | 2017-08-11 | 浙江工业大学 | One kind is with Cu2O/SiO2‑TiO2Composite aerogel is the method that adsorbent removes thiophene sulphur in fuel oil |
-
2018
- 2018-12-18 CN CN201811566326.5A patent/CN109592703B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63310720A (en) * | 1987-06-12 | 1988-12-19 | Fujikura Ltd | Production of superconducting powder |
| CN1445195A (en) * | 2002-11-20 | 2003-10-01 | 上海维来新材料科技有限公司 | Complex super fine powder of copper-zinc compound as well as its preparing technique and usage |
| CN101927152A (en) * | 2010-03-12 | 2010-12-29 | 大连海鑫化工有限公司 | High-strength gas purifying and separating adsorbent as well as preparation and application thereof |
| CN102659166A (en) * | 2012-05-21 | 2012-09-12 | 兰州大学 | Method for preparing CuO/Cu2O block composite material with room-temperature ferromagnetism |
| US20140262811A1 (en) * | 2013-03-12 | 2014-09-18 | Ut-Battelle, Llc | Controllable reductive method for synthesizing metal-containing particles |
| CN106669716A (en) * | 2016-12-07 | 2017-05-17 | 盐城工学院 | Preparation method of Cu2O/CuO/WO3 composite heterojunction thin film |
| CN106590728A (en) * | 2016-12-15 | 2017-04-26 | 浙江工业大学 | Method or removing thiophenic sulfur from fuel oil by taking Cu2O/SiO2-Al2O3 composite aerogel as adsorbent |
| CN107033946A (en) * | 2017-03-14 | 2017-08-11 | 浙江工业大学 | One kind is with Cu2O/SiO2‑TiO2Composite aerogel is the method that adsorbent removes thiophene sulphur in fuel oil |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199953A (en) * | 2021-12-15 | 2022-03-18 | 吉林大学 | Based on Cu2Nitrogen dioxide sensor of O-CuO graded structure micron flower sensitive material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109592703B (en) | 2021-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107899592B (en) | Magnetic recyclable flaky NiFe2O4Preparation method and application of/BiOI composite nano material | |
| CN104307514B (en) | A kind of titania/silica compound spherical shell parcel nano catalyst and preparation method thereof | |
| CN108262072A (en) | It is a kind of for catalyzed by ruthenium complexes agent of acetylene hydrochlorination and its preparation method and application | |
| CN108213414A (en) | A kind of method and its application for coating MOF and improving gold nano cluster photostability | |
| CN104383947A (en) | Silver phosphate/titanium dioxide nanocomposite and preparation method thereof | |
| CN101805010A (en) | Method for preparing hollow sphere made from cuprous oxide | |
| CN108465489A (en) | A kind of Fe3O4@ZIF-8 core-shell types composite material and preparation methods and catalytic applications | |
| CN110280238A (en) | A kind of carbon quantum dot@MIL-125-NH2The preparation method and applications of/Pt photochemical catalyst | |
| CN110252407A (en) | A kind of method that Carboxyl-functional Ionic Liquid prepares core-shell structure catalyst | |
| CN110170650A (en) | A method of preparing high compactness and the complete silver-coated copper powder of cladding | |
| CN109592703A (en) | A kind of CuO/Cu2O-La2O3The preparation method of multiphase complex sol | |
| CN102408562B (en) | Preparation method for polyaniline/ferroferric oxide compound with nucleus-shell structure | |
| CN109999917B (en) | Covalent organic framework-based composite photocatalyst for degrading organic pollutants in water and preparation method thereof | |
| CN108706568A (en) | A kind of preparation method of N doping Porous hollow carbon Nano capsule material and the material of preparation | |
| CN108889336B (en) | Preparation and application of three-dimensional bulk phase graphene-based cobalt-based MOFs composite material | |
| CN102806071A (en) | Material for hollow nano organosilicon sphere and preparation method of material | |
| Ma et al. | Cerium-cobalt bimetallic metal–organic frameworks with the mixed ligands for photocatalytic degradation of methylene blue | |
| CN108855217B (en) | Preparation method and application of copper-based metal organic framework nano sheet | |
| CN109580885A (en) | A kind of CuO/Cu2O-La2O3The preparation method of the gas sensitive coating of multiphase complex sol | |
| CN108394907B (en) | Silicon-vanadium composite oxide and preparation method thereof | |
| CN103950978B (en) | Biomimetic synthesis method of bismuth vanadate visible-light photocatalyst having hierarchical structure | |
| CN1727099A (en) | Nano metal particles in high density and preparation method | |
| CN112536070A (en) | Preparation method of visible light response type MIL-100(Fe) photocatalytic composite material | |
| CN103537301A (en) | Catalyst for coproduction of methylal and methyl formate from methanol through oxidization as well as preparation method and application of catalyst | |
| CN102134102A (en) | Preparation method of iron oxide nanorod |
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 |