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A kind of tungsten bronze nano short rod particles catalyzed and doped by variable valence metal and its preparation method

A variable-valence metal and tungsten bronze technology, applied in chemical instruments and methods, tungsten compounds, inorganic chemistry, etc., can solve the problem that the heat shielding effect is not optimal, and achieve excellent light-to-heat conversion performance and wide application prospects

Active Publication Date: 2017-06-20
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are still various problems in the above-mentioned heat-shielding particles, such as the need for hydrogen reduction in the preparation process and the transmission of more short-wave near-infrared light, which leads to the suboptimal heat-shielding effect, etc.

Method used

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  • A kind of tungsten bronze nano short rod particles catalyzed and doped by variable valence metal and its preparation method
  • A kind of tungsten bronze nano short rod particles catalyzed and doped by variable valence metal and its preparation method
  • A kind of tungsten bronze nano short rod particles catalyzed and doped by variable valence metal and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Preparation of Fe 0.1 -Cs 0.32 WO 3 Hexagonal cesium tungsten bronze nanorod particles

[0068] ①Weigh 6.3503g of sodium tungstate, add 30ml of deionized water, fully dissolve, and quickly add 5mol / L hydrochloric acid under stirring conditions to make the pH ≤ 1, after stirring for 30min, milky yellow flocculent tungsten Acid colloidal suspension, after suction filtration, to obtain milky yellow solid colloidal tungstic acid with a certain volume; add solid colloidal tungstic acid to 120ml deionized water, stir evenly under the condition of ultrasonic vibration, and make it redisperse into a suspension solution, continue to filter, repeat three times; then use 120ml of absolute ethanol to repeat the above operation, filter three times, take out the obtained massive gel and add an appropriate amount of absolute ethanol to make the total volume 77ml, stir and redisperse under the condition of ultrasonic vibration Suspension, obtain solid colloidal tungstic acid ethanol...

Embodiment 2

[0073] Preparation V 0.1 -Cs 0.32 WO 3 nanorod particles

[0074] ①Preparation of solid colloidal ethanol tungstate suspension: same as step ① in Example 1

[0075] ②Preparation of reaction precursor

[0076] Weigh 0.6g of cesium sulfate, add it to 40ml solid colloidal tungstate ethanol dispersion, then measure and add 70ml of acetylacetone, add 8.356g of oxalic acid, 1g of P123 inducer, and finally add 0.163g of vanadyl sulfate, stir 2h, obtain the reaction precursor;

[0077] ③Powder synthesis, washing and drying

[0078] The reaction precursor solution was transferred into a 200ml autoclave, and reacted continuously at 190°C for 72h. The precipitate after the reaction was washed with water and alcohol for 3 times, and after centrifugation, it was dried at 60°C for 10h. According to XRD and Judging by EDS, the synthesized blue powder is V-doped V 0.1 -Cs 0.32 WO 3 Hexagonal Cesium Tungsten Bronze.

Embodiment 3

[0080] Preparation of Pt 0.1 -Cs 0.32 WO 3 nanorod particles

[0081] ①Preparation of solid colloidal ethanol tungstate suspension: same as step ① in Example 1

[0082] ② Preparation of reaction precursor solution and powder synthesis

[0083] Weigh 0.6g of cesium sulfate, add it to 40ml of solid colloidal tungstic acid ethanol dispersion, then measure and add 65ml of absolute ethanol, add 5.3721g of sorbic acid, 1g of P123 inducer, and finally add 0.193mol / L of chlorine Platinic acid aqueous solution 5ml, stirred for 2h to obtain the reaction precursor; transfer the reaction precursor into a 200ml autoclave, react continuously at 190°C for 72h, wash the reacted precipitate with water and alcohol for 3 times, and centrifuge Finally, it was dried at 60°C for 10 h. Judging by XRD and EDS, the synthesized blue powder was Pt-doped Pt 0.1 -Cs 0.32 WO 3 Hexagonal Cesium Tungsten Bronze.

[0084] The XRD spectrum of the synthesized Pt-doped cesium tungsten bronze powder is as...

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Abstract

The invention provides a variable valency metal catalyzed and doped tungsten bronze Ax-MyWO3 nano-short rod particle and a preparation method thereof. The method consists of: firstly making solid colloidal tungstic acid as a tungsten source, mixing the tungsten source with an M source, an appropriate solvent and an inducing agent, adding a proper amount of a variable valency metal A salt, and carrying out thermal reaction to synthesize the variable valency metal catalyzed and doped tungsten bronze Ax-MyWO3 multifunctional nanoparticle. The synthesized Ax-MyWO3 nano-short rod particle has excellent visible light permeability and near-infrared shielding performance and photothermal conversion ability, can be widely used for preparation of glass transparent thermal insulation paint, transparent and heat insulation compounds, photothermal absorbing coatings, solar thermal collectors, solar water heater coatings, heating fiber and photothermal therapy nanoparticles, etc. At the same time, the synthesized variable valency metal catalyzed and doped tungsten bronze Ax-MyWO3 nano-short rod particle also has excellent photocatalysis ability, and can be widely applied to the photocatalytic degradation field of organic pollutants.

Description

technical field [0001] The invention belongs to the technical field of nanoparticle synthesis. In particular, it relates to a variable-valence metal catalyzed and doped tungsten bronze nano short rod particle and a preparation method thereof. Background technique [0002] At present, energy saving and consumption reduction are issues that must be considered in the sustainable economic development of all countries. In many countries' energy consumption, building energy consumption accounts for about 30-40% of the national energy consumption, while energy consumed through glass doors and windows accounts for more than 50% of building energy consumption. Near-infrared light accounts for about 46% of the solar spectrum. If the transmission of near-infrared light is reduced, its heat-shielding effect can be greatly improved. Therefore, the research and development of glass transparent heat-insulating coatings has important practical and social significance. It can be predicted...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G41/00
CPCC01G41/006C01P2002/72C01P2002/84C01P2002/85C01P2004/03C01P2004/04C01P2004/16C01P2004/64
Inventor 刘敬肖史非范传彦
Owner DALIAN POLYTECHNIC UNIVERSITY
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