WOx active materials refer to a class of tungsten oxide materials with varying stoichiometric ratios of oxygen (denoted by x). These materials belong to the category of active matter. Active matter refers to systems that, on the microscopic level, input energy to produce motion or deformation. These materials can absorb energy from their surroundings and convert it into mechanical motion or other forms of active behavior. WOx active materials have the following characteristics:
- Chemical Composition Diversity
The value of x in WOx can vary, leading to different stoichiometries of tungsten oxide, such as WO3 (yellow tungsten trioxide), WO2.9 (blue tungsten oxide), and WO2.72 (purple tungsten oxide), among others. These different chemical compositions impart diverse physical and chemical properties to WOx active materials. - Excellent Physical Properties
Nanometric WOx materials exhibit unique properties such as size effects and quantum tunneling effects. These characteristics significantly enhance their physical and chemical properties. For instance, nano tungsten oxide particles have a large specific surface area and abundant active sites, giving them significant advantages in applications like catalysis and sensing. - Multifunctionality
WOx active materials exhibit various functionalities, including gas sensitivity, photocatalysis, photochromism, and electrochromism. They can change their electrical properties by adsorbing gas molecules for gas detection, convert harmful substances into harmless ones using light energy for environmental purification, and alter their color under an external electric field to create smart windows, among other applications. - Broad Application Prospects
Due to their excellent physical and chemical properties, WOx active materials have broad application prospects in fields such as catalysis, sensing, electronic devices, nano-drugs, high-temperature coatings, pigments and coloring agents, flame-retardant fabrics, X-ray screens, and environmental monitoring. For example, in catalysis, WOx active materials can serve as catalysts or as components in catalysts to improve the efficiency and selectivity of catalytic reactions. In electronics, they can be used to prepare sensors, battery materials, and transparent conductive films.
WOx active materials are tungsten oxide materials with diverse chemical compositions, excellent physical properties, multifunctionality, and broad application prospects. Their research and applications not only help drive development and innovation in relevant fields but also hold the potential to provide new solutions to global issues such as the energy crisis and environmental pollution.
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