ZnIn2S4 flowerlike microspheres embedded with carbon quantum dots for efficient photocatalytic reduction of Cr(VI) |
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| Authors: | Baibai Liu Xinjuan Liu Lei Li Jianwei Li Can Li Yinyan Gong Lengyuan Niu Xinsheng Zhao Chang Q. Sun |
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| Affiliation: | 1. Institute of Coordination Bond Metrology and Engineering (CBME), College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, Zhejiang, China;2. Chongqing Key Laboratory of Extraordinary Coordination Bond and Advanced Materials Techniques (EBEAM), Yangtze Normal University, Chongqing 408100, China;3. School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China;4. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore |
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| Abstract: | Development of efficient heterostructured photocatalysts that respond to visible light remains a considerable challenge. We herein show the synthesis of ZnIn2S4/carbon quantum dot hybrid photocatalysts with flowerlike microspheres via a facile solvothermal method. The ZnIn2S4/carbon quantum dot flowerlike microspheres display enhanced photocatalytic and photoelectrochemical activity compared with that of pure ZnIn2S4. With a content of only 0.5 wt % carbon quantum dots, 93% of Cr(VI) is reduced under visible-light irradiation at 40 min. As a co-catalyst, the carbon quantum dots improve the light absorption and lengthen the lifetime of charge carriers, consequently enhancing the photocatalytic and photoelectrochemical activity. |
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| Keywords: | Carbon quantum dots Flowerlike microspheres Co-catalyst Photoelectronchemical |
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