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Hybrid BiOBr/UiO-66-NH2 composite with enhanced visible-light driven photocatalytic activity toward RhB dye degradation.

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.

SUBMITTER: Bibi R 

PROVIDER: S-EPMC9077208 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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Hybrid BiOBr/UiO-66-NH<sub>2</sub> composite with enhanced visible-light driven photocatalytic activity toward RhB dye degradation.

Bibi Rehana R   Shen Quanhao Q   Wei Lingfei L   Hao Dandan D   Li Naixu N   Zhou Jiancheng J  

RSC advances 20180109 4

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-NH<sub>2</sub> hybrid composite was successfully prepared by introducing various amounts of UiO-66-NH<sub>2</sub> 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-NH<sub>2</sub>  ...[more]

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