Research progress on modification and photocatalytic degra-dation performance of Bismuth-based semiconductor nanoma-terials
Photocatalysis technology has been widely concerned in solving energy crisis and environmental pollution,and has made a lot of achievements.As the action mechanism of photocatalysts in different fields is different,most photocatalysts need to overcome the defects of wide band gap,easy recombination of photogen-erated charge and low charge utilization rate.Due to the existence of Bi 6s and O 2p hybrid orbitals in valence bands of Bi-based photocatalysts,most Bi-based photocatalysts have relatively narrow visible light utilizable band gaps,so more and more attention has to be paid.Bi-based semiconductors was taken as research object,focusing on the advantages and disadvantages of bismuth-based semiconductor materials.It briefly introduced the modification research of three Bi-based semiconductor nanomaterials designed and synthesized by our re-search group,namely trivalent iron doped BiOCOOH,oxygen vacancy BiOCl/Bi4 O5 Br2,and CoWO4/Bi2 WO6 Z-type heterojunction.The research progress in the modification and photocatalytic degradation performance of Bi-based semiconductor nanomaterials was systematically introduced.
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维普
