It is reported that porous yellow tungsten oxide, or porous tungsten trioxide (WO3), is an ideal photocatalytic material as the pore structure has a strong ability to degrade dyes. Therefore, tungsten trioxide with pore structure can be used to photodegrade dyes in industrial wastewater.
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The researchers proposed a method for preparing a porous structure tungsten trioxide photocatalyst. They used colloidal carbon microspheres as templates to adsorb metal ions on their surfaces and surroundings, and then removed the carbon microsphere templates by high-temperature calcination to obtain WO3 with a porous structure. The preparation process is simple, the raw materials are cheap and easily available, and the cost is low. Moreover, the product has a controllable morphology, good chemical stability, easy separation, and no secondary pollution to the environment. Therefore, yellow tungsten oxide with porous structure is an ideal photocatalytic material.
