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Lin Z, Meng M, Ding H, Zhang Q, Duan C, Chen C, Huang S, Zhou Z. Synthesis and characterization of Cu xO/Bi 2O 3 oxides for removal of HCHO under visible light irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:69059-69073. [PMID: 34286429 DOI: 10.1007/s11356-021-15294-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
CuxO/Bi2O3 oxides grown on nickel foam were synthesized via an electrodeposition method to degrade indoor HCHO under visible light irradiation and fully characterized by XRD, SEM, FT-IR, and UV-Vis technologies. The characterization results showed that the CuxO/Bi2O3 oxides were successfully loaded on nickel foam and the visible light response spectrum was expanded to 740 nm. Plackett-Burman design combined with central composite design has been used to optimize factors that affect HCHO removal performance. The results demonstrated that bismuth nitrate content, polyethylene glycol 600 content, sintering time, and lactic acid concentration were the four most important factors affecting the HCHO removal performance over CuxO/Bi2O3 sample. The optimum CuxO/Bi2O3 sample could degrade 88.796% of HCHO in 300 min at the conditions of 4.28 mol/L lactic acid, 4.86% polyethylene glycol 600, 194.03 min sintering time, and 45.83 g bismuth nitrate, and the HCHO removal rate remained 82.3% after five cycles. A plausible mechanism for the degradation of HCHO under visible light irradiation was proposed. This work provides a feasible solution for removing indoor formaldehyde in the field of photocatalysis.
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Affiliation(s)
- Zhihao Lin
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
| | - Mianwu Meng
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China.
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, China, Guilin, Guangxi, 541004, PR China.
- Key Laboratory of Karst Ecology and Environment Change, Guangxi Department of Education, Guilin, Guangxi, 541004, PR China.
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, Guangxi, 541004, PR China.
| | - Hua Ding
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
| | - Qi Zhang
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
| | - Chaomin Duan
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
| | - Chaoshu Chen
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
- Key Laboratory of Karst Ecology and Environment Change, Guangxi Department of Education, Guilin, Guangxi, 541004, PR China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, Guangxi, 541004, PR China
| | - Siyu Huang
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, China, Guilin, Guangxi, 541004, PR China
- Key Laboratory of Karst Ecology and Environment Change, Guangxi Department of Education, Guilin, Guangxi, 541004, PR China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, Guangxi, 541004, PR China
| | - Zhenming Zhou
- College of Environment and Resources, Guangxi Normal University, Guilin, Guangxi, 541004, PR China
- Key Laboratory of Karst Ecology and Environment Change, Guangxi Department of Education, Guilin, Guangxi, 541004, PR China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, Guangxi, 541004, PR China
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