Hybrid BiOBr/UiO-66-NH2 composite with enhanced visible-light driven photocatalytic activity toward RhB dye degradation |
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| Authors: | Rehana Bibi Quanhao Shen Lingfei Wei Dandan Hao Naixu Li Jiancheng Zhou |
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| Affiliation: | School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189 P. R. China, Fax: +86 025 52090620, +86 025 52090621 ; Department of Chemical and Pharmaceutical Engineering, Southeast University, Chengxian College, Nanjing 210088 P. R. China ; Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing 211189 PR China |
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| Abstract: | Metal–organic framework (MOFs) based composites have received more research interest for photocatalytic applications during recent years. In this work, a highly active, visible light photocatalyst BiOBr/UiO-66-NH2 hybrid composite was successfully prepared by introducing various amounts of UiO-66-NH2 with BiOBr through a co-precipitation method. The composites were applied for the photocatalytic degradation of RhB (rhodamine B) dye. The developed BiOBr/UiO-66-NH2 composites exhibited higher photocatalytic activity than the pristine material. In RhB degradation experiments the hybrid composite with 15 wt% of UiO-66-NH2 shows degradation efficiency conversion of 83% within two hours under visible light irradiation. The high photodegradation efficiency of BUN-15 could be ascribed to efficient interfacial charge transfer at the heterojunction and the synergistic effect between BiOBr/UiO-66-NH2. In addition, an active species trapping experiment confirmed that photo-generated hole+ and O2− radicals are the major species involved in RhB degradation under visible light.Metal–organic framework (MOFs) based composites have received more research interest for photocatalytic applications during recent years. |
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