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Zhang Q, Chen XQ, Lan XY, Hong JM. Modulating Cu valence state in Cu and graphene oxide composites for electrocatalytic tetracycline hydrochloride degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:112252-112266. [PMID: 37831265 DOI: 10.1007/s11356-023-30269-2] [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: 04/17/2023] [Accepted: 10/01/2023] [Indexed: 10/14/2023]
Abstract
Cu and graphene oxide composites (Cu-GO) were designed by anchoring Cu+ via oxygen groups in GO based on the heavy co-relationships of copper (Cu) anode electrocatalytic activity with Cu valence state. With the consumption of oxygen groups under various pyrolysis temperatures, the Cu valence state changed from Cu ions (as CuCl2 and CuCl) to Cu oxide (CuO and Cu2O) and the final metallic Cu. In which the Cu+ in CuCl was more favorable for electrocatalytic oxidation than other Cu valence states. Due to the dramatic contribution of 1O2 and active chlorine, 100% degradation efficiency was achieved using tetracycline hydrochloride (TCH) as the target pollutant. Cu+ showed a selective preference for 1O2 and active chlorine triggering, rather than metallic Cu. Under the attack of 1O2 and active chlorine, the degradation intermediates of TCH were then provided by LC-MS results. The final results not only prove the feasibility of the Cu-GO/electrocatalysis system for pollution control but also shed light on the anode design via Cu valence state modulation.
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Affiliation(s)
- Qian Zhang
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
- Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China
- Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment, Huaqiao University, Xiamen, 361021, China
| | - Xiao-Qi Chen
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
- Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China
- Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment, Huaqiao University, Xiamen, 361021, China
| | - Xin-Yue Lan
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
- Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China
- Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment, Huaqiao University, Xiamen, 361021, China
| | - Jun-Ming Hong
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China.
- Xiamen Engineering Research Center of Industrial Wastewater Biochemical Treatment, Xiamen, 361021, China.
- Fujian Provincial Research Center of Industrial Wastewater Biochemical Treatment, Huaqiao University, Xiamen, 361021, China.
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Shi J, Wang L, Gao S, Huang J, Yang H, Lu H, Cao S. Degradation of Diclofenac by Loaded Solid Superbase-Activated Persulfate. Int J Mol Sci 2023; 24:14313. [PMID: 37762616 PMCID: PMC10531577 DOI: 10.3390/ijms241814313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/28/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Alkali-activated persulfate (PS) is widely used in situ in chemical oxidation processes; however, studies on the innovation of the alkali activation process are very limited. Two supported solid superbases, namely KNO3/γ-Al2O3 (KAl) and KNO3/SBA-15/MgO (KSM), respectively, were prepared and used to activate persulfate to degrade DCF in this work. The results showed that the superbases elevated the solution pH once added and thus could catalyze persulfate to degrade diclofenac efficiently above pH 10.5. The catalytic efficiency of KAl was close to that of sodium hydroxide, and that of KSM was the highest. The mechanism might be that, in addition to raising the solution pH, some potassium existed as K2O2, which had a strong oxidizing effect and was conducive to DCF removal. Hydroxyl, sulfate and superoxide radicals were all found in the reaction system, among which hydroxyl might play the most important role. The material composition ratio, common anion and humic acid all had some influences on the catalytic efficiency. A total of five intermediates were found in the KSM/PS oxidation system, and six oxidation pathways, which were hydroxylation, dehydrogen, dechlorination, dehydration, decarboxylation, and C-N bond breakage, might be involved in the reaction process. Several highly toxic oxidation products that should be paid attention to were also proposed.
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Affiliation(s)
- Jiaqi Shi
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China; (J.S.); (L.W.); (S.G.); (J.H.); (H.L.)
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Lei Wang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China; (J.S.); (L.W.); (S.G.); (J.H.); (H.L.)
| | - Shang Gao
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China; (J.S.); (L.W.); (S.G.); (J.H.); (H.L.)
| | - Jianbo Huang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China; (J.S.); (L.W.); (S.G.); (J.H.); (H.L.)
| | - Hao Yang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China; (J.S.); (L.W.); (S.G.); (J.H.); (H.L.)
- College of Environment, Hohai University, Nanjing 210098, China
| | - Hao Lu
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China; (J.S.); (L.W.); (S.G.); (J.H.); (H.L.)
- College of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
| | - Shaohua Cao
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China; (J.S.); (L.W.); (S.G.); (J.H.); (H.L.)
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Ouyang P, Zhang R, Zhou J, Liu H, Liu Z, Xu C, Zhang X, Zeng S, Su Q, Meng X. Copper Recovery from Industrial Bimetallic Composite Ionic Liquids by Direct Electrodeposition and the Effect of Temperature and Ultrasound. ACS OMEGA 2023; 8:11941-11951. [PMID: 37033857 PMCID: PMC10077462 DOI: 10.1021/acsomega.2c07603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/09/2023] [Indexed: 06/19/2023]
Abstract
Critical processing protocols of industrial bimetallic composite ionic liquid (IL) are necessary to assure good mass transfer rates for process optimization and efficient metal recovery. Here, the effects of different conditions on the electrochemical behavior and copper recovery from the industrial bimetallic composite IL are crucial for effective resource utilization. Cyclic voltammetry (CV) shows that the reduction of Cu(I) to Cu(0) during the cathodic reduction region is the irreversible diffusion-controlled process, and the diffusion coefficient increased with temperature which indicated that increasing temperature could promote the diffusion and mass transfer. During electrodeposition, metallic copper is obtained exclusively on the cathode, while CuCl2 accumulates exclusively on the anode. Scanning electron microscopy shows that the micron-size electrodeposits become larger and significantly rougher with increasing temperature and ultrasonic frequency, illustrating that these factors hasten the nucleation and crystallization rates at high overpotentials. The efficiency of copper recovery is greatly improved by employing high temperature and ultrasonic cavitation, and the highest values correspond to r = 76.9% at 80 °C and r = 63.6% at 40 kHz. The study lays the foundation for efficient and rapid recovery of copper from spent ILs.
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Affiliation(s)
- Ping Ouyang
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Rui Zhang
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Jian Zhou
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Haiyan Liu
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Zhichang Liu
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Chunming Xu
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Xiangping Zhang
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Shaojuan Zeng
- State
Key Laboratory of Multiphase Complex System, Beijing Key Laboratory
of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Qian Su
- State
Key Laboratory of Multiphase Complex System, Beijing Key Laboratory
of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Xianghai Meng
- State
Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
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Wang P, Chishti AN, Chen P, Lv Z, Tan Y, Zhang H, Zha J, Ma Z, Ni L, Zhang LN, Wei Y. A Keggin-type polyoxomolybdate-based crystalline material formed by hydrothermal transformation: photo/electro-catalytic properties and mechanism study. CrystEngComm 2022. [DOI: 10.1039/d2ce01301k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
This study constructs a POM-based crystalline material of [(SiMo12O40)Cu6(2,2′-bipy)6(Mo6O22)] (1). The photocatalytic MB degradation and electrocatalytic nitrite reduction properties of complex 1 are systematically studied for the first time.
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Affiliation(s)
- Peisen Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Aadil Nabi Chishti
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Peng Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Zengxiang Lv
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Yaya Tan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Hanzhi Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Junjie Zha
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Zhiyuan Ma
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Lubin Ni
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Lu-nan Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Yongge Wei
- Key lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
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Kholodnaya G, Ponomarev D, Sazonov R, Lapteva O, Zhuravlev M, Pyatkov I. Effect of the concentration of the starting reagents and the design of the reaction chamber on the morphology and phase composition of the Cu xO y@SiO 2 nanocomposite synthesized by the pulsed plasma-chemical method. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1987461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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