CN101805023A - Method for preparing tungstic oxide nano-sheets - Google Patents
Method for preparing tungstic oxide nano-sheets Download PDFInfo
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Abstract
The invention provides a method for preparing tungstic oxide nano-sheets, comprising a precursor solution preparation part and a hydro-thermal reaction part, specifically comprising the following steps: carrying out hydrogen peroxide oxidation reaction of metal tungsten powder at the condition of low temperature water bath, back-flowing the obtained peroxy-polytungstic acid solution for 5-15h at the temperature of 50-60 DEG C, dissolving with deionized water after aging at room temperature, adjusting the pH value with hydrochloric acid or nitric acid, mixing with polyethylene glycol to obtain the precursor solution; carrying out the reaction of the precursor solution for 12-24h at the temperature of 150-180 DEG, putting the solution in a drying oven for drying through vacuum leaching, alcohol and distilled water washing after naturally cooling till room temperature so as to obtain tungstic oxide nano-sheets; compared with the prior art, the method has low cost, simple technology, easy operation, high preparation efficiency, good repeatability and convenient industrialization; the tungstic oxide nano-sheets preparaed by the method have regular shape and uniform granularity, and can be widely applied to visible light catalysis, solar battery, intelligent window, gas sensor, and the like.
Description
Technical field
The present invention relates to metal-oxide semiconductor (MOS) preparation method technical field, relate in particular to a kind of preparation method who adopts tungsten powder peroxidation method to obtain tungstic oxide nano-sheets.
Background technology
Tungsten oxide 99.999 is a kind of important transition metal oxide semi-conductor, has excellent electrochromism, photochromic, field emission performance, has important application prospects in fields such as sun power utilization, intelligent display, visible light catalytic, chemical sensitisations.
The performance of nano material and its structure, pattern and size etc. have confidential relation.Therefore, the research of the morphology control aspect of relevant various nanostructures becomes one of focus of field of nanometer material technology.Preparation of nanomaterials is broadly divided into high temperature gas phase method, mechanochemical reaction and wet chemistry method etc.These preparation methods cut both ways, high temperature gas phase method for example, although can grow controlled nanocrystalline of polycomponent, complex structure, pattern, but the growth parameter(s) control accuracy is required high, circulation ratio is poor, therefore, limited the large-scale production of nano structural material to a great extent, and cost is higher; The nanocrystalline material pattern of mechanochemical reaction production is irregular, particle size uniformity is difficult to control; Comparatively speaking, wet chemistry method has that technology is simple, raw material mixes, is convenient to characteristics such as suitability for industrialized production, and can grow controlled nanocrystalline of pattern.Wet chemistry method comprises methods such as topochemical reaction, solvent thermal and hydrothermal method.Wherein, the topochemical reaction process is more numerous and diverse, longer duration; Solvent-thermal method adopts WCl
6Cost higher, and need organic solvent as reaction media; The hydro-thermal rule is raw material usually with the sodium wolframate, water is reaction media, cost is lower, and products therefrom purity height, good dispersity, granularity are easy to control, in addition, because reaction is in molecular level, the reactive raising, thereby can substitute some high temperature solid state reaction, be a kind of method with strong competitive power.But the present appearance of nano material of reporting that utilizes Hydrothermal Preparation is more single, mostly is bar-shaped.
Low-dimension nano material has electricity, optics and the mechanical characteristic of the uniqueness that is different from body phase material.About the preparation of low-dimensional nanometer tungsten oxide, existing at present a lot of reports that prepare about the Tungsten oxide 99.999 of zero dimension and one dimension Nano structure, but the report of the Tungsten oxide 99.999 of relevant two-dimensional nano chip architecture preparation is then seldom.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of preparation method of tungstic oxide nano-sheets, with simplification, cost degradation and the industrialization of realization about the preparation technology of the Tungsten oxide 99.999 of two-dimensional nano chip architecture.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of preparation method of tungstic oxide nano-sheets is characterized in that: comprise precursor solution preparation part and hydro-thermal reaction part, the precursor solution preparation may further comprise the steps:
Step 1: the employing metal tungsten powder is a basic raw material, and reaction obtains the poly-wolframic acid solution of peroxide through hydrogen peroxide oxidation under the low temperature water bath condition;
Step 2: the poly-wolframic acid solution of the peroxide described in the step 1 at 50～60 ℃ of 5～15h that reflux down, is obtained yellow sol;
Step 3: the yellow sol that obtains in the step 2 is at room temperature aging, obtain yellow solid, described yellow solid is put into the deionized water dissolving obtain solution;
Step 4: the pH value that obtains solution in the step 3 is regulated with hydrochloric acid or nitric acid, mixes with a certain amount of polyoxyethylene glycol then, obtains precursor solution;
Hydro-thermal reaction part may further comprise the steps:
Step 5: the precursor solution that obtains in the step 4 is moved in the reactor, react 12～24h down, naturally cool to room temperature at 150～180 ℃;
Step 6: the product that step 4 is obtained respectively washs 2～5 times with ethanol and distilled water behind vacuum filtration, puts into baking oven then at 50～100 ℃ of down dry 2～5h, obtains tungstic oxide nano-sheets.
For optimizing technique scheme, the measure of taking also comprises:
The volumetric molar concentration of above-mentioned hydrochloric acid or nitric acid is 1-5mol/l.
The concentration of above-mentioned precursor solution is 15-20mg/ml.
The pH value of above-mentioned precursor solution is 1.5-2.
The molecular weight of above-mentioned polyoxyethylene glycol is 2000-20000.
Compared with prior art, the inventive method is with low cost, technology is simple to operation, preparation efficiency height, good reproducibility, is convenient to industrialization; Utilize tungstic oxide nano-sheets pattern rule, the epigranular of the inventive method preparation, be widely used at aspects such as visible light catalytic, solar cell, smart window, gas sensors.
Description of drawings
Fig. 1 is the X ray diffracting spectrum of tungstic oxide nano-sheets of the present invention;
Fig. 2 is the field emission scanning electron microscope photo of tungstic oxide nano-sheets of the present invention;
Fig. 3 is the transmission electron microscope photo of tungstic oxide nano-sheets of the present invention;
Fig. 4 is the transmission electron microscope photo of the single tungstic oxide nano-sheets of the present invention;
Fig. 5 is the selected area electron diffraction style of tungstic oxide nano-sheets of the present invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Fig. 1 is to Figure 5 shows that the synoptic diagram that utilizes tungstic oxide nano-sheets of the present invention.
A kind of preparation method of tungstic oxide nano-sheets, comprise precursor solution preparation part and hydro-thermal reaction part, the precursor solution preparation may further comprise the steps: step 1: the employing metal tungsten powder is a basic raw material, and reaction obtains the poly-wolframic acid solution of peroxide through hydrogen peroxide oxidation under the low temperature water bath condition; Step 2: the poly-wolframic acid solution of the peroxide described in the step 1 at 50～60 ℃ of 5～15h that reflux down, is obtained yellow sol; Step 3: the yellow sol that obtains in the step 2 is at room temperature aging, obtain yellow solid, described yellow solid is put into the deionized water dissolving obtain solution; Step 4: the pH value that obtains solution in the step 3 is regulated with hydrochloric acid or nitric acid, mixes with a certain amount of polyoxyethylene glycol then, obtains precursor solution; Hydro-thermal reaction part may further comprise the steps: step 5: the precursor solution that obtains in the step 4 is moved in the reactor, react 12～24h down at 150～180 ℃, naturally cool to room temperature; Step 6: the product that step 4 is obtained respectively washs 2～5 times with ethanol and distilled water behind vacuum filtration, puts into baking oven then at 50～100 ℃ of down dry 2～5h, obtains tungstic oxide nano-sheets.
Embodiment 1:
The 13g tungsten powder is slowly added in the mixing solutions of 80ml hydrogen peroxide and 8ml deionized water, constantly be stirred to tungsten powder in the ice-water bath and dissolve fully, obtain the poly-wolframic acid solution of jonquilleous peroxide after the filtration; The poly-wolframic acid solution of peroxide at 55 ℃ of following backflow 6h, is formed yellow sol; It is standby as precursor that at room temperature aging this yellow sol obtains yellow solid; Get that dissolving is mixed with solution in the deionized water that the 0.8g precursor adds 54ml, dropwise adding the 5mol/l hydrochloric acid soln again, to regulate the pH value be about 2, adds the 1g molecular weight then and be 2000 polyoxyethylene glycol and mix, and obtains precursor solution; The precursor solution that obtains is moved in the reactor, and 180 ℃ are reacted 20h down, naturally cool to room temperature, and the product that obtains is after vacuum filtration, ethanol and distilled water respectively wash three times, and dry 3h under 60 ℃ obtains Tungsten oxide 99.999 (WO in baking oven
3) nanometer sheet.
Embodiment 2:
The 13g tungsten powder is slowly added in the mixing solutions of 80ml hydrogen peroxide and 8ml deionized water, constantly be stirred to tungsten powder in the ice-water bath and dissolve fully, obtain the poly-wolframic acid solution of jonquilleous peroxide after the filtration; The poly-wolframic acid solution of peroxide at 50 ℃ of following backflow 10h, is formed yellow sol; It is standby as precursor that at room temperature aging this yellow sol obtains yellow solid; Get that dissolving is mixed with solution in the deionized water that the 0.8g precursor adds 54ml, dropwise adding the 1mol/l hydrochloric acid soln again, to regulate the pH value be about 1.5, adds the 1g molecular weight then and be 20000 polyoxyethylene glycol and mix, and obtains precursor solution; The precursor solution that obtains is moved in the reactor, and 150 ℃ are reacted 24h down, naturally cool to room temperature, and the product that obtains is after vacuum filtration, ethanol and distilled water respectively wash 5 times, and dry 4h under 50 ℃ obtains Tungsten oxide 99.999 (WO in baking oven
3) nanometer sheet.
Embodiment 3:
The 13g tungsten powder is slowly added in the mixing solutions of 80ml hydrogen peroxide and 8ml deionized water, constantly be stirred to tungsten powder in the ice-water bath and dissolve fully, obtain the poly-wolframic acid solution of jonquilleous peroxide after the filtration; The poly-wolframic acid solution of peroxide at 60 ℃ of following backflow 5h, is formed yellow sol; It is standby as precursor that at room temperature aging this yellow sol obtains yellow solid; Get that dissolving is mixed with solution in the deionized water that the 0.8g precursor adds 54ml, dropwise adding the 3mol/l hydrochloric acid soln again, to regulate the pH value be about 1.7, adds the 1g molecular weight then and be 5000 polyoxyethylene glycol and mix, and obtains precursor solution; The precursor solution that obtains is moved in the reactor, and 160 ℃ are reacted 22h down, naturally cool to room temperature, and the product that obtains is after vacuum filtration, ethanol and distilled water respectively wash 4 times, and dry 2h under 100 ℃ obtains Tungsten oxide 99.999 (WO in baking oven
3) nanometer sheet.
Embodiment 4:
The 13g tungsten powder is slowly added in the mixing solutions of 80ml hydrogen peroxide and 8ml deionized water, constantly be stirred to tungsten powder in the ice-water bath and dissolve fully, obtain the poly-wolframic acid solution of jonquilleous peroxide after the filtration; The poly-wolframic acid solution of peroxide at 55 ℃ of following backflow 6h, is formed yellow sol; It is standby as precursor that at room temperature aging this yellow sol obtains yellow solid; Get that dissolving is mixed with solution in the deionized water that the 1.1g precursor adds 60ml, dropwise adding the 2mol/l hydrochloric acid soln again, to regulate the pH value be about 1.8, adds the 1g molecular weight then and be 5000 polyoxyethylene glycol and mix, and obtains precursor solution; The precursor solution that obtains is moved in the reactor, and 170 ℃ are reacted 24h down, naturally cool to room temperature, and the product that obtains is after vacuum filtration, ethanol and distilled water respectively wash 2 times, and dry 3h under 80 ℃ obtains Tungsten oxide 99.999 (WO in baking oven
3) nanometer sheet.
Embodiment 5:
Other condition is with embodiment 1, and different is, and precursor among the embodiment 1 is added solution that deionized water obtains is 1.5 with the nitre acid for adjusting pH value of 1mol/l, adds the 1g molecular weight then and is 10000 polyoxyethylene glycol and mix, and obtains precursor solution; The precursor solution that obtains is moved in the reactor, and 180 ℃ are reacted 24h down, naturally cool to room temperature, and the product that obtains is after vacuum filtration, ethanol and distilled water respectively wash three times, and dry 3h under 60 ℃ obtains Tungsten oxide 99.999 (WO in baking oven
3) nanometer sheet.
Embodiment 6:
Other condition is with embodiment 2, and different is, and precursor among the embodiment 2 is added solution that deionized water obtains is 2 with the nitre acid for adjusting pH value of 5mol/l, adds the 1g molecular weight then and is 15000 polyoxyethylene glycol and mix, and obtains precursor solution; The precursor solution that obtains is moved in the reactor, and 180 ℃ are reacted 20h down, naturally cool to room temperature, and the product that obtains is after vacuum filtration, ethanol and distilled water respectively wash three times, and dry 2h under 100 ℃ obtains Tungsten oxide 99.999 (WO in baking oven
3) nanometer sheet.
Tungsten oxide 99.999 (the WO that above embodiment is obtained
3) nanometer sheet carries out structured testing, obtains identical or proximate result:
The x-ray diffraction pattern of tungstic oxide nano-sheets as shown in Figure 1, main diffraction peak be that (002), (020), (200) reach (220) in the collection of illustrative plates, with monocline WO mutually
3The standard card value of (JCPDS 83-0950) matches.
The field emission scanning electron microscope photo of tungstic oxide nano-sheets as shown in Figure 2, as can be seen from Figure 2, the tungstic oxide nano-sheets that obtains presents the nanometer sheet structure of regular shape, and the length and width size is respectively 50～100nm and 50～200nm, can estimate that from edge-on particle the thickness of nanometer sheet is 10～30nm.
The transmission electron microscope of tungstic oxide nano-sheets as shown in Figure 3, as can be seen from Figure 3, the tungstic oxide nano-sheets that obtains is typical nanometer sheet structure.
The transmission electron microscope of single nanometer sheet and selected area electron diffraction style as shown in Figure 4 and Figure 5, as can be seen from Figure 4 and Figure 5, orderly diffraction spot shows that the tungstic oxide nano-sheets that obtains is a monocrystalline, index is monocline phase WO
3Diffraction pattern along (002) and (020) zone axis.
In sum, the inventive method is with low cost, technology is simple to operation, preparation efficiency height, good reproducibility, is convenient to industrialization; Utilize the tungstic oxide nano-sheets of the inventive method preparation to be the monocline phase, and be monocrystalline, band-gap energy is low, and transition of electron takes place easily, has excellent photochromic properties, air-sensitive performance and photocatalysis performance; In addition, pattern rule, the epigranular of tungstic oxide nano-sheets; Therefore, be widely used at aspects such as visible light catalytic, solar cell, smart window, gas sensors.
More than concrete enforcement be the detailed description that the present invention is done.These embodiments are not in order to limit invention, and for those skilled in the art, the improvement of being done and additional should be considered as within protection scope of the present invention without departing from the spirit of the invention.
Claims (5)
1. the preparation method of a tungstic oxide nano-sheets is characterized in that: comprise precursor solution preparation part and hydro-thermal reaction part, the precursor solution preparation may further comprise the steps:
Step 1: the employing metal tungsten powder is a basic raw material, and reaction obtains the poly-wolframic acid solution of peroxide through hydrogen peroxide oxidation under the low temperature water bath condition;
Step 2: the poly-wolframic acid solution of the peroxide described in the step 1 at 50～60 ℃ of 5～15h that reflux down, is obtained yellow sol;
Step 3: the yellow sol that obtains in the step 2 is at room temperature aging, obtain yellow solid, described yellow solid is put into the deionized water dissolving obtain solution;
Step 4: the pH value that obtains solution in the step 3 is regulated with hydrochloric acid or nitric acid, mixes with a certain amount of polyoxyethylene glycol then, obtains precursor solution;
Hydro-thermal reaction part may further comprise the steps:
Step 5: the precursor solution that obtains in the step 4 is moved in the reactor, react 12～24h down, naturally cool to room temperature at 150～180 ℃;
Step 6: the product that step 4 is obtained respectively washs 2～5 times with ethanol and distilled water behind vacuum filtration, puts into baking oven then at 50～100 ℃ of down dry 2～5h, obtains tungstic oxide nano-sheets.
2. the preparation method of a kind of tungstic oxide nano-sheets according to claim 1, it is characterized in that: the volumetric molar concentration of described hydrochloric acid or nitric acid is 1-5mol/l.
3. the preparation method of a kind of tungstic oxide nano-sheets according to claim 1, it is characterized in that: the concentration that obtains solution in the described step 3 is 15-20mg/ml.
4. the preparation method of a kind of tungstic oxide nano-sheets according to claim 1 is characterized in that: the pH value of described precursor solution is 1.5-2.
5. the preparation method of a kind of tungstic oxide nano-sheets according to claim 1, it is characterized in that: the molecular weight of described polyoxyethylene glycol is 2000-20000.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874876A (en) * | 2012-10-08 | 2013-01-16 | 中山大学 | Method for preparing tungsten trioxide nanosheets by thermal oxidation |
| CN103864148A (en) * | 2014-03-07 | 2014-06-18 | 天津大学 | Preparation method of tungsten trioxide one-dimensional structure nanowire and multi-stage nano structure |
| CN104556232A (en) * | 2014-10-22 | 2015-04-29 | 北京科技大学 | Preparation method and application of nano tungsten oxide water solution |
| CN105923657A (en) * | 2016-07-20 | 2016-09-07 | 河南科技大学 | Preparation method of monoclinic tungsten trioxide |
| CN106830087A (en) * | 2017-02-28 | 2017-06-13 | 河北工业大学 | A kind of preparation method of monoclinic system tungstic acid |
| CN106824190A (en) * | 2017-03-03 | 2017-06-13 | 中国科学技术大学先进技术研究院 | A kind of WO3‑xNanocatalyst and its preparation, application |
| CN107088407A (en) * | 2017-04-24 | 2017-08-25 | 陕西科技大学 | A kind of nano-sheet tungstic acid high efficiency photocatalyst and preparation method thereof |
| CN108479758A (en) * | 2018-04-13 | 2018-09-04 | 合肥工业大学 | A kind of preparation method of tungsten oxide bismuth nano-photocatalyst |
| CN109279655A (en) * | 2017-07-21 | 2019-01-29 | 北方民族大学 | A kind of extinction anode material production method for decomposing water using photochemical reaction |
| CN110237838A (en) * | 2019-05-06 | 2019-09-17 | 张红 | A kind of preparation method of oxygen defect enhancing light absorption type tungsten oxide material |
| CN110327913A (en) * | 2019-08-01 | 2019-10-15 | 江西理工大学 | A kind of nano-sheet tungsten oxide/graphene oxide Core-shell structure material and the preparation method and application thereof |
| CN111495355A (en) * | 2020-04-26 | 2020-08-07 | 中国科学院合肥物质科学研究院 | WO with visible light region L SPR absorption3-xPhotocatalyst, preparation method and application |
| CN111717936A (en) * | 2020-08-07 | 2020-09-29 | 上海应用技术大学 | Microwave intercalation preparation WO3Method of nanosheet |
| CN112499684A (en) * | 2020-12-04 | 2021-03-16 | 合肥工业大学 | Multilayer WO based on ion repulsion action dispersion stripping3Method of nanosheet |
| CN114229897A (en) * | 2021-09-14 | 2022-03-25 | 中国科学技术大学 | Preparation method of metal phase tungsten oxide and application of metal phase tungsten oxide |
| CN115849450A (en) * | 2022-12-21 | 2023-03-28 | 中国地质大学（武汉） | Preparation method of tungsten oxide homojunction gas-sensitive material, gas-sensitive sensor and application |
| CN115849450B (en) * | 2022-12-21 | 2024-04-26 | 中国地质大学（武汉） | Preparation method of tungsten oxide homojunction gas-sensitive material, gas-sensitive sensor and application |
-
2010
- 2010-04-01 CN CN 201010143517 patent/CN101805023A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 《Journal ofCrystalGrowth》 20081113 Jinmin Wang et al. Synthesis, growth mechanism and room-temperature blue luminescence emission of uniform WO3 nanosheets with W as starting material 第317页第2节 1-5 第311卷, 2 * |
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| CN102874876A (en) * | 2012-10-08 | 2013-01-16 | 中山大学 | Method for preparing tungsten trioxide nanosheets by thermal oxidation |
| CN102874876B (en) * | 2012-10-08 | 2014-07-30 | 中山大学 | Method for preparing tungsten trioxide nanosheets by thermal oxidation |
| CN103864148A (en) * | 2014-03-07 | 2014-06-18 | 天津大学 | Preparation method of tungsten trioxide one-dimensional structure nanowire and multi-stage nano structure |
| CN104556232A (en) * | 2014-10-22 | 2015-04-29 | 北京科技大学 | Preparation method and application of nano tungsten oxide water solution |
| CN104556232B (en) * | 2014-10-22 | 2016-04-27 | 北京科技大学 | The preparation method of the nanometer tungsten oxide aqueous solution and application thereof |
| CN105923657A (en) * | 2016-07-20 | 2016-09-07 | 河南科技大学 | Preparation method of monoclinic tungsten trioxide |
| CN105923657B (en) * | 2016-07-20 | 2018-05-22 | 河南科技大学 | A kind of preparation method of monoclinic form tungstic acid |
| CN106830087A (en) * | 2017-02-28 | 2017-06-13 | 河北工业大学 | A kind of preparation method of monoclinic system tungstic acid |
| CN106830087B (en) * | 2017-02-28 | 2018-06-15 | 河北工业大学 | A kind of preparation method of monoclinic system tungstic acid |
| CN106824190A (en) * | 2017-03-03 | 2017-06-13 | 中国科学技术大学先进技术研究院 | A kind of WO3‑xNanocatalyst and its preparation, application |
| CN106824190B (en) * | 2017-03-03 | 2023-12-29 | 中国科学技术大学先进技术研究院 | WO (WO) 3-x Nanometer catalyst and its preparation and application |
| CN107088407A (en) * | 2017-04-24 | 2017-08-25 | 陕西科技大学 | A kind of nano-sheet tungstic acid high efficiency photocatalyst and preparation method thereof |
| CN109279655A (en) * | 2017-07-21 | 2019-01-29 | 北方民族大学 | A kind of extinction anode material production method for decomposing water using photochemical reaction |
| CN108479758B (en) * | 2018-04-13 | 2020-10-27 | 合肥工业大学 | Preparation method of tungsten oxide bismuth nano photocatalyst |
| CN108479758A (en) * | 2018-04-13 | 2018-09-04 | 合肥工业大学 | A kind of preparation method of tungsten oxide bismuth nano-photocatalyst |
| CN110237838A (en) * | 2019-05-06 | 2019-09-17 | 张红 | A kind of preparation method of oxygen defect enhancing light absorption type tungsten oxide material |
| CN110327913A (en) * | 2019-08-01 | 2019-10-15 | 江西理工大学 | A kind of nano-sheet tungsten oxide/graphene oxide Core-shell structure material and the preparation method and application thereof |
| CN111495355A (en) * | 2020-04-26 | 2020-08-07 | 中国科学院合肥物质科学研究院 | WO with visible light region L SPR absorption3-xPhotocatalyst, preparation method and application |
| CN111717936A (en) * | 2020-08-07 | 2020-09-29 | 上海应用技术大学 | Microwave intercalation preparation WO3Method of nanosheet |
| CN112499684A (en) * | 2020-12-04 | 2021-03-16 | 合肥工业大学 | Multilayer WO based on ion repulsion action dispersion stripping3Method of nanosheet |
| CN114229897A (en) * | 2021-09-14 | 2022-03-25 | 中国科学技术大学 | Preparation method of metal phase tungsten oxide and application of metal phase tungsten oxide |
| CN114229897B (en) * | 2021-09-14 | 2022-09-30 | 中国科学技术大学 | Preparation method of metal phase tungsten oxide and application of metal phase tungsten oxide |
| CN115849450A (en) * | 2022-12-21 | 2023-03-28 | 中国地质大学（武汉） | Preparation method of tungsten oxide homojunction gas-sensitive material, gas-sensitive sensor and application |
| CN115849450B (en) * | 2022-12-21 | 2024-04-26 | 中国地质大学（武汉） | Preparation method of tungsten oxide homojunction gas-sensitive material, gas-sensitive sensor and application |
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