Nano tungsten oxide, as a significant nanomaterial, has a wide range of applications across various fields, leading to numerous patent inventions. Here are some notable patents:
- Method for Preparing Sheet-Like Nano Tungsten Oxide
- Publication Number: CN117142524A
- Application Date: May 2023
- Features: This method involves adding a control substance during the dropwise addition step in the preparation process, with precise control over the amount added. The resulting product achieves high purity standards and allows for the controlled preparation of sheet-like nano tungsten oxide, presenting promising industrial application prospects.
- Preparation Method of Nano Tungsten Oxide
- Application Number: 2018107526815
- Application Date: July 10, 2018
- Features: This method involves dispersing tungsten hexachloride in an organic alkane solvent to obtain a dispersion, stirring in air or oxygen to form an oxygen-containing precursor, and reacting at a specific temperature to produce nano tungsten oxide. The method is simple, environmentally friendly, uses readily available raw materials, and has high controllability. The resulting nano tungsten oxide has uniform size, no agglomeration, and good photocatalytic performance.
- Method for Preparing Micro/Nano Tungsten Oxide
- Application Number: 2018109540253
- Application Date: August 21, 2018
- Features: This method disperses filter paper in sodium tungstate solution, allowing the gel-like precursor formed after pH adjustment to attach to the filter paper. After filtration and calcination, tungsten oxide products are obtained. The method combines the advantages of uniform raw material mixing from liquid-phase methods and the simplicity of solid-phase methods, resulting in high efficiency, eco-friendliness, short process, and controllable products. The prepared tungsten oxide exhibits good crystallinity, uniform size, no agglomeration, and excellent photocatalytic performance.
- Self-Assembled Micro-Spheres of Tungsten Oxide Nanosheets and Their Preparation Method and Applications
- Features: This invention successfully prepares self-assembled micro-spheres of tungsten oxide nanosheets using ultrasonic methods under mild conditions. The micro-spheres are formed from sheet structures with a thickness of 10-20 nm and a diameter of 1-3 μm. The material exhibits high sensitivity and selectivity for low concentrations of NO₂ at lower operating temperatures, making it suitable for detecting trace nitrogen dioxide in the environment. Additionally, this material can be used to create gas-sensitive elements in sensors.
These patents highlight the innovation in the preparation methods and applications of nano tungsten oxide, indicating its potential in various industries, including environmental monitoring, energy, and materials science.
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