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Di Y, Gu Z, Kang Y, Tian J, Hu C. Enhanced oxidation of organic pollutants by regulating the interior reaction region of reactive electrochemical membranes. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133584. [PMID: 38286047 DOI: 10.1016/j.jhazmat.2024.133584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 01/01/2024] [Accepted: 01/19/2024] [Indexed: 01/31/2024]
Abstract
Reactive electrochemical membrane (REM) emerges as an attractive strategy for the elimination of refractory organic pollutants that exist in wastewater. However, the limited reaction sites in traditional REMs greatly hinder its practical application. Herein, a feed-through coating methodology was developed to realize the uniform loading of SnO2-Sb catalysts on the interior surface of a REM. The uniformly coated REM (Unif-REM) exhibited 2.4 times higher reaction kinetics (0.29 min-1) than that of surface coated REM (Surf-REM) for the degradation of 2 mM 4-chlorophenol (4-CP), rendering an energy consumption as low as 0.016 kWh gTOC-1. The fast degradation of various emerging contaminants, e.g., sulfamethoxazole (SMX), ofloxacin (OFLX), and tetracycline (TC), also confirms its superior oxidation capability. Besides, the Unif-REM exhibited good performance in generating hydroxyl radicals (•OH) and a relatively long service lifetime. The simulation of spatial current distribution demonstrates that the interior reaction region in the Unif-REM channels can be drastically extended, thereby maximizing the surface coupling of mass diffusion and electron transfer. This study offers an in-depth look at the spatially confined reactions in REM and provides a reference for the design of electrochemical systems with economically efficient water purification.
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Affiliation(s)
- Yuting Di
- School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Zhenao Gu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, Beijing 100085, China.
| | - Yuyang Kang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiayu Tian
- School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Chengzhi Hu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
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Han X, Zhou C, Chen Y, Wan Y, Zhang B, Shi L, Shi S. Preparation of Yb-Sb co-doped Ti/SnO 2 electrode for electrocatalytic degradation of sulfamethoxazole (SMX). CHEMOSPHERE 2023; 339:139633. [PMID: 37516322 DOI: 10.1016/j.chemosphere.2023.139633] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 07/21/2023] [Accepted: 07/22/2023] [Indexed: 07/31/2023]
Abstract
To efficiently break down residual sulfonamide antibiotics in environmental water, Yb-Sb co-doped Ti/SnO2 electrodes were fabricated using a solvothermal method. The effect of different amounts of Yb doping on the properties of the electrodes was studied. When the atom ratio of Sn: Yb is 100 : 7.5 in the preparation, the as-obtained coral-like electrodes (denoted as Yb 7.5%) possessed the smallest diameter of spherical particles on the surfaces, to result in the denser surface, highest electrocatalytic activity and smallest resistance of the electrode. As anode for electrocatalytic degradation of sulfamethoxazole, the Yb 7.5% electrode showed a degradation rate of 92% in 90 min, which was much higher than that of Yb 0% electrode (62.7% degradation rate). The electrocatalytic degradation of sulfamethoxazole was investigated with varying current densities and initial concentrations. Results indicated that the degradation process followed pseudo-first-order kinetics, and the degradation rate constants for Yb 7.5% and Yb 0% electrodes were 0.0278 min-1 and 0.0114 min-1, respectively. Furthermore, the service life of Ti/SnO2 electrodes was significantly improved after Yb doping, as demonstrated by accelerated life testing. Yb 7.5% exhibited a service life that was 2.7 times longer than that of Yb 0%. This work offers a new approach to construct Yb-Sb co-doped Ti/SnO2 electrodes with excellent electrooxidation activity and high stability for the electrochemical oxidation degradation of sulfamethoxazole.
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Affiliation(s)
- Xiao Han
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, PR China; School of Rare Earths, University of Science and Technology of China, Hefei, Anhui, 230026, PR China.
| | - Chenliang Zhou
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, PR China; School of Rare Earths, University of Science and Technology of China, Hefei, Anhui, 230026, PR China.
| | - Yongjing Chen
- JiangXi University of Science and Technology, College of Resources and Environmental Engineering, Ganzhou, 341000, PR China.
| | - Yinhua Wan
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, PR China; School of Rare Earths, University of Science and Technology of China, Hefei, Anhui, 230026, PR China; College of Resources and Environment, Nanchang University, Nanchang, 330031, PR China; Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China.
| | - Baozhi Zhang
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, PR China; School of Rare Earths, University of Science and Technology of China, Hefei, Anhui, 230026, PR China.
| | - Lili Shi
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, PR China; College of Resources and Environment, Nanchang University, Nanchang, 330031, PR China.
| | - Shaoyuan Shi
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, 341000, PR China; School of Rare Earths, University of Science and Technology of China, Hefei, Anhui, 230026, PR China; College of Resources and Environment, Nanchang University, Nanchang, 330031, PR China; Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China; Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, PR China.
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Wu F, Yang ZQ, Sun W, Chen X, Qi H, Wang LD. Electrochemical Properties of Ti/SnO 2-Sb-Ir Electrodes Doped with a Low Iridium Content for the Oxygen Evolution Reaction in an Acidic Environment. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fei Wu
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian 116024, China
| | - Zheng-Qing Yang
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian 116024, China
| | - Wen Sun
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian 116024, China
- Dalian Key Laboratory of Flue Gas Purification and Waste Heat Utilization, Dalian 116024, China
| | - Xu Chen
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian 116024, China
| | - Hui Qi
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian 116024, China
| | - Li-Da Wang
- Department of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, Dalian 116024, China
- Dalian Key Laboratory of Flue Gas Purification and Waste Heat Utilization, Dalian 116024, China
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Nguyen Truong G, Hoang Vinh L, Huynh Thu S, Nguyen Thi Hong P, Nguyen Quang B. Preparation and Characterization of Antimony-Doped Tin Oxide Nanocrystallite Coatings on 316L Stainless Steel. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2021; 2021:9402537. [PMID: 34777892 PMCID: PMC8580623 DOI: 10.1155/2021/9402537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/18/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
The study on the coatings containing antimony-dope tin oxide mostly has been done on titanium and its alloys for preparation of electrode materials. In this study, we try to prepare the similar coatings on 316L stainless steel, which is more common than titanium, and investigate some characteristics of the formed coatings. The preparation of the coating is by the impregnation of the substrate in solution containing SnCl4 and SbCl3 with the ratio of 93/7, and the concentration of SbCl3, 10 g/L in isopropanol, pH of 1-1.2, and the annealed temperature of 450°C give suitable coating for electrode materials. Some coating features, such as the crystal structure (XRD), morphology (SEM), hardness, electrical resistant, and electrochemical behaviors of the coating on the substrate have been also investigated. The results of the study show that the coatings can be used as electrode materials for the effective treatment of organic colorants in water such as methylene blue in water treatment.
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Affiliation(s)
- Giang Nguyen Truong
- Department of Chemistry, Faculty of Materials, National University of Civil Engineering, No. 55 Giai Phong Rd., Hanoi, Vietnam
| | - Long Hoang Vinh
- Department of Chemistry, Faculty of Materials, National University of Civil Engineering, No. 55 Giai Phong Rd., Hanoi, Vietnam
| | - Suong Huynh Thu
- School of Chemical Engineering, Hanoi University of Science and Technology, No. 1 Dai Co Viet St., Hanoi, Vietnam
| | - Phuong Nguyen Thi Hong
- School of Chemical Engineering, Hanoi University of Science and Technology, No. 1 Dai Co Viet St., Hanoi, Vietnam
| | - Bac Nguyen Quang
- School of Chemical Engineering, Hanoi University of Science and Technology, No. 1 Dai Co Viet St., Hanoi, Vietnam
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