Professor Chen Weigen of Chongqing University and others prepared a new type of violet tungsten oxide composite material – palladium/violet tungsten (Pd/W18O49) catalyst through solvothermal method and chemical reduction method, which not only has a strong catalytic effect on industrial pollutants , and the production cost is relatively reasonable, so it is expected to become a substitute for traditional catalysts. A more common industrial pollutant catalyst is palladium (Pd) nanoparticles. Palladium nanoparticles are favored by many catalyst researchers because of their good electrical conductivity, chemical stability and catalytic performance. It has a strong catalytic conversion effect on hydroquinone (HQ) in industrial pollutants. However, commercial palladium catalysts have limited applications in some fields due to problems such as high production costs, particle aggregation, and catalyst poisoning.
In order to reduce the production cost of Pd catalyst and further improve its catalytic effect, Professor Chen Weigen and others combined it with transition metal violet tungsten powder to form a new catalyst, that is, 3D sea urchin-like Pd/W18O49 nanocomposite material. Studies have shown that the Pd/W18O49 catalyst has significant catalytic activity due to its large specific surface area and abundant oxygen vacancies, which can effectively degrade hydroquinone and its derivatives, thereby effectively alleviating environmental pollution.
According to Chinatungsten Online, the main reason for adding violet tungsten powder to pure Pd catalyst is that violet tungsten powder is an oxygen vacancy oxide, which has excellent semiconductor effect and chemical stability. In addition to being used as a photocatalyst, violet tungsten powder can also be used to produce tungsten products (such as ultrafine tungsten powder and tungsten carbide, etc.), lithium-ion battery anode materials, smart glass, near-infrared photothermal diagnosis and treatment drugs, shielding materials, Fuel cell carrier and gas sensor, etc.
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