Fabrication of a stable visible-light photocatalyst p-CuO/n-AgBr through hole transporting

作者：Li, Feng; Yin, Yue; Jiang, Dongmei^*

来源：Journal of Materials Science, 2017, 52(11): 6415-6422.

DOI：10.1007/s10853-017-0875-2

• TITANIUM-DIOXIDE NANOMATERIALS
• HIGHLY EFFICIENT
• AT-AGBR
• HETEROJUNCTION
• NANOPARTICLES
• PERFORMANCE
• IRRADIATION
• MECHANISMS
• SEPARATION
• COMPOSITE

AgBr microparticles decorated by CuO nanoparticles were prepared by a facile direct precipitation method. The composite exhibited enhanced visible-light-driven photocatalytic performance for methyl orange (MO) degradation, about 4.3 times that of pure AgBr. The phases of CuO and AgBr were demonstrated by X-ray diffraction analysis as well as XPS. The SEM images and the cycle experiment revealed that the stability of AgBr was improved significantly by combining with CuO during visible-light illumination. The pH values and the trapping experiments of active species provided good evidences that p-n heterojunction was formed. The high performance and stability of composite were attributed to the crucial role of inner field in p-CuO/n-AgBr, which may transfer holes out of AgBr. The charge transfer mechanism of CuO/AgBr was proposed and discussed in detail.

• 出版日期2017-6
• 单位华东师范大学