高效可见光响应氧氯化铋基纳米光催化剂的制备及其光催化机理研究

High surface area of pure BiOCl nanopowders will be synthesized by chemical deposition method at room temperature with BiCl3o3H2O and ammunium as the raw reaction materials. The photocatalytic activity of BiOCl nanopowders under visible light irradiation ( λ＞420 nm ) will be investigated with RhB dye as the degradation solution. The photocatalytic mechanism of the BiOCl nanopowders under visible light irradiation will be discussed. The trans-metal ions, rare earth ions and non-metal ions doped BiOCl photocatalysts will be prepared in order to enhance the photocatalytic activity of the photocatalysts. The band structure of the doped BiOCl based semiconductor will be obtained from First-Principles. The photocatalytic mechanism of the doped BiOCl nanopowders under visible light irradiation will be investigated with RhB dye as the degradation solution. The effect of band structure on the photocatalytic activity of the doped BiOCl nanostructures will be investigated. High surface area BiOCl/In2O3, BiOCl/TiO2 and BiOCl/WO3 composite semiconductor nano-photocatalysts will be synthesized by chemical deposition method .The photocatalytic activity of BiOCl/In2O3, BiOCl/TiO2 and BiOCl/Bi2WO6 composite semiconductor nano-photocatalysts under visible light irradiation will be checked with RhB dye as the degradation solution and the photocatalytic mechanism of these composite semiconductors will be investigated. BiOCl/In2O3/MFe2O4 (M=Co, Ni and Zn) and BiOCl/TiO2/MFe2O4 (M=Co, Ni and Zn) magnetic composite photocatalysts will be synthesized by chemical deposition method. The problem of the recycle of the BiOCl based photocatalysts from solution will be dissolved with the magnetic property and the photocatalytic mechanism of these magnetic composite semiconductors will be investigated. These high efficiency visible-light-driven BiOCl based photocatalysts will be applied in the dye waste water treatment.

采用室温化学共沉淀法以BiCl3o3H2O和氨水为原料合成高比表面积BiOCl纳米粉体；以罗丹明B溶液为目标降解物，研究可见光照射下(λ＞ 420 nm)BiOCl粉体的光催化性能；以过渡金属、稀土离子和非金属离子掺杂改性BiOCl光催化剂，利用第一性原理对掺杂BiOCl进行能带计算,研究掺杂BiOCl基体系光催化剂的能带结构对光催化性能的影响，探讨其可见光催化活性增强机理；运用化学共沉淀法制备BiOCl/In2O3、BiOCl/TiO2和BiOCl/Bi2WO6纳米复合催化剂，在可见光照射下以罗丹明B溶液为目标降解物对其光催化活性进行评价，研究其可见光光催化的催化机理；利用化学共沉淀法制备BiOCl/In2O3、BiOCl/TiO2与MFe2O4(M=Co, Ni和Zn)磁性复合光催化材料，解决BiOCl基光催化剂回收问题。这些高效可见光响应的光催化剂有望在实际的染料污水处理中得到应用。

采用室温化学共沉淀或水热合成法合成高比表面积BiOCl基纳米粉体；以有机染料溶液为目标降解物，研究可见光照射下(λ> 420 nm)BiOCl基粉体的光催化性能；以过渡金属、稀土离子和非金属离子掺杂改性BiOCl光催化剂。研究了掺杂BiOCl基体系光催化剂的能带结构对光催化性能的影响，探讨了其在可见光下光催化活性增强机理；运用化学共沉淀法或水热合成法制备BiOCl、BiOCl/In2O3和BiOCl/TiO2纳米复合催化剂，在可见光照射下以有机污染物B溶液为目标降解物对其光催化活性进行评价，并研究了其可见光光催化的催化机理；利用化学共沉淀制备BiOCl/Fe3O4磁性复合光催化材料，解决BiOCl基光催化剂分离回收问题。这些高效可见光响应的光催化剂有望在实际的染料污水处理中得到应用。