The effect of [Br/Zn] content on the structure and photocatalytic performance of BiOBr/ZnO based composite coatings on NiO/Ni foam
文献类型： 外文期刊
作者： Li, Dayu 1 ; Li, Longfei 1 ; Liu, Yuxue 2 ; Wang, Yichen 3 ; Li, Hongbin 5 ; Hou, Zhenhua 5 ; Lin, Hui 2 ; Asghar, Zeeshan 6 ; Zhang, Yongcai 3 ; Hou, Jianhua 6 ;
作者机构： 1.Yangzhou Univ, Sch Mech Engn, Yangzhou 225009, Jiangsu, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
3.Yangzhou Univ, Coll Chem & Chem Engn, Yangzhou 225002, Peoples R China
4.Univ Southern Calif, Sch Business, Los Angeles, CA USA
5.Jiangxi Xinda Hangke New Mat Technol Co Ltd, Nanchang 330096, Peoples R China
6.Yangzhou Univ, Sch Environm Sci & Engn, Yangzhou 225009, Jiangsu, Peoples R China
关键词： BiOBr/ZnO composite; Solvothermal synthesis method; Nickel foam; Coating
期刊名称：SOLAR ENERGY （ 影响因子：6.6； 五年影响因子：6.6 ）
ISSN： 0038-092X
年卷期： 2025 年 287 卷
页码：
收录情况： SCI
摘要： In this study, the BiOBr/ZnO based composite coatings were built on NiO/Ni foam by a simple solvothermal process, where multiple-heterojunction structures and photocatalytic activity of BiOBr-ZnO-Bi-NiO were investigated by adjusting [Br/Zn] content in the precursor solution. It is found that the coating morphologies including nanoparticles and nanosheets can be obtained by changing the precursor [Br/Zn] ratio, and the phases of Bi, BiOBr, ZnO, NiO were closely contacted with each other which have been evidenced in the different coatings by HRTEM, while the crystallization was kept the same from XRD. The bandgap width can be reduced by the multiple-heterojunction structures, which important for enhanced photocatalytic performance. Under visible light conditions, through apparent first-order kinetic model fitting, the degradation rate of methyl orange was enhanced up to 0.01351 h- 1, which is about 4 times of the original, and then decreased by increasing the [Br/Zn] ratio. By the cycle test, the photocatalytic efficiency was degraded from 91 % to 82.7 % after eight cycles. Superoxide radicals are identified as the key active species in degradation systems, converting methyl orange into CO2 and H2O.
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