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This review article comprehensively discusses the recent development of band engineering ways, synthetic methods, and photocatalytic applications using ZnS nanocrystalline semiconductors. The band engineering is just the first step in the design of visible-light-driven photocatalysts. Particle size, shape, surface area, crystal structure, and degree of crystallinity also affect photocatalytic activity...
In the present study, nanocrystalline photocatalyst Bi 2 O 3 powders with various ZnO additions were synthesized by spray pyrolysis at 600 (SP600) and 700°C (SP700). The Bi 2 O 3 powder converted from a monoclinic α phase to a tetragonal β phase at pyrolysis temperatures ≥600°C. The crystallinity of the SP powder increased with the increase in pyrolysis temperature...
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