Covalent coupling promoting charge transport of CdSeTe/UiO-66 for boosting photocatalytic CO2 reduction |
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| Institution: | 1. Key Laboratory of Poyang Lake Environment and Resource Utilization of Ministry of Education, School of Resources & Environment, Nanchang University, Nanchang 330031, China;2. Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China;3. School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China;1. Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China;2. College of Environment, Hohai University, Nanjing 210098, China;3. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;1. Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China;2. Key Laboratory of Pollutant Chemistry and Environmental Treatment, College of Chemistry and Environmental Science, Yili Normal University, Yining 835000, China;1. Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China;2. Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China;3. College of Resource and Environment, Chengdu University of Information Technology, Chengdu 610041, China;4. College of Architecture and Environment, Sichuan University, Chengdu 610041, China;1. College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou 350108, China;2. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China;1. College of Chemical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China;2. College of Chemistry, Sichuan University, Chengdu 610065, China;1. College of Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing 401331, China;2. College of Material Science and Engineering, Chongqing University, Chongqing 400044, China;3. Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100024, China |
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| Abstract: | Quantum dots (QDs) based heterojunction is a candidate for the photocatalytic CO2 reduction, owing to the large extinction coefficient and easy modification of band structures. However, the van der Waals interaction causes the large charge resistance and strong recombination centers between QDs and host materials, which makes the poor photocatalytic performance. Herein, a covalent bonded CdSeTe QDs and NH2-UiO-66 heterojunction (NUC-x) is constructed through an acylamino (-CONH-). The results indicate that the acylamino between NH2-UiO-66 and CdSeTe QDs can serve as the transfer channels for the photogenerated charges and stabilize the QDs. The optimized NUC-1200 achieved a CO generation rate of 228.68 µmol/g, which is 13 and 4 times higher than that of NH2-UiO-66 and CdSeTe QDs, respectively. This work provides a new avenue for efficient and stable photocatalysis of QDs. |
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