文献类型：期刊文献

英文题名：In situ synthesis of a Bi2O3 quantum dot decorated BiOCl heterojunction with superior photocatalytic capability for organic dye and antibiotic removal

作者：Zhang, Mingliang[1,2]; Duo, Fangfang[2]; Lan, Jihong[2]; Zhou, Jianwei[2]; Chu, Liangliang[2]; Wang, Chubei[2]; Li, Lixiang[1,3]

第一作者：Zhang, Mingliang;张明亮

机构：[1] Key Laboratory of Energy Materials and Electrochemistry Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, 185 Qianshanzhong Road, Liaoning, Anshan, 114051, China; [2] Henan Photoelectrocatalytic Material and Micro-nano Application Technology Academician Workstation, Xinxiang University, Henan, Xinxiang, 453003, China; [3] State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China

第一机构：Key Laboratory of Energy Materials and Electrochemistry Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, 185 Qianshanzhong Road, Liaoning, Anshan, 114051, China

年份：2023

卷号：13

期号：9

起止页码：5674-5686

外文期刊名：RSC Advances

收录：EI(收录号：20230913657489);Scopus(收录号：2-s2.0-85149007375)

语种：英文

外文关键词：Antibiotics - Charge transfer - Chemical bonds - Chlorine compounds - Heterojunctions - Nanocrystals - Nanosheets - Photocatalytic activity - Quantum chemistry - Semiconductor quantum dots

摘要：As a decoration method, coupling a photocatalyst with semiconductor quantum dots has been proven to be an efficient strategy for enhanced photocatalytic performance. Herein, a novel BiOCl nanosheet decorated with Bi2O3 quantum dots (QDs) was first synthesized by a facile one-step in situ chemical deposition method at room temperature. The as-prepared materials were characterized by multiple means of analysis. The Bi2O3QDs with an average diameter of about 8.0 nm were uniformly embedded on the surface of BiOCl nanosheets. The obtained Bi2O3QDs/BiOCl exhibited significantly enhanced photocatalytic performance on the degradation of the rhodamine B and ciprofloxacin, which could be attributed to the band alignment, the photosensitization effect and the strong coupling between Bi2O3 and BiOCl. In addition, the dye photosensitization effect was demonstrated by the monochromatic photodegradation experiments. The radical trapping experiments and the ESR testing demonstrated the type II charge transfer route of the heterojunction. Finally, a reasonable photocatalytic mechanism based on the relative band positions was discussed to illustrate the photoreaction process. These findings provide a good choice for the design and potential application of BiOCl-based photocatalysts in water remediation. ? 2023 The Royal Society of Chemistry.