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Chen Y, Su R, Xu F, Ma M, Wang Y, Ma D, Li Q. Oxygen-containing functional groups in Fe 3O 4@three-dimensional graphene nanocomposites for enhancing H 2O 2 production and orientation to 1O 2 in electro-Fenton. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134162. [PMID: 38555670 DOI: 10.1016/j.jhazmat.2024.134162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/17/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
In electro-Fenton (EF), development of a bifunctional electrocatalyst to realize simultaneous H2O2 generation and activation efficiently for generating reactive species remains a challenge. In particular, a nonradical-mediated EF is more favorable for actual wastewater remediation, and deserves more attention. In this study, three-dimensional graphene loaded with Fe3O4 nanoparticles (Fe3O4@3D-GNs) with abundant oxygen-containing functional groups (OFGs) was synchronously synthesized using a NaCl-template method and served as a cathode to establish a highly efficient and selective EF process for contaminant degradation. The amounts of OFGs can be effectively modulated via the pyrolysis temperature to regulate the 2e- oxygen reduction reaction activity and reactive oxygen species (ROS) production. The optimized Fe3O4@3D-GNs synthesized at 750 °C (Fe3O4@3D-GNs-750) with the highest -C-O-C and -C꞊O group ratios exhibited the maximum H2O2 and 1O2 yields during electrocatalysis, thus showing remarkable versatility for eliminating organic contaminants from surface water bodies. Experiments and theoretical calculations have demonstrated the dominant role of -C-O-C in generating H2O2 and the positive influence of -C꞊O sites on the production of 1O2. Moreover, the surface-bound Fe(II) favors the generation of surface-bound •OH, which steers a more favorable oxidative conversion of H2O2 to 1O2. Fe3O4@3D-GNs were proven to be less pH-dependent, low-energy, stable, and recyclable for practical applications in wastewater purification. This study provides an innovative strategy to engineer active sites to achieve the selective electrocatalysis for eliminating pollution and reveals a novel perspective for 1O2-generation mechanism in the Fenton reaction.
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Affiliation(s)
- Yi Chen
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Ruidian Su
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Fei Xu
- Environment Research Institute, Shandong University, Qingdao 266200, PR China
| | - Mengyu Ma
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Yan Wang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Defang Ma
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China
| | - Qian Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266200, PR China.
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Lu K, Ding T, Zhu M, Chen J, Yue D, Liu X, Fang X, Xia J, Qin Z, Wu M, Shi G. Double pyramid stacked CoO nano-crystals induced by graphene at low temperatures as highly efficient Fenton-like catalysts. Phys Chem Chem Phys 2024; 26:8681-8686. [PMID: 38441213 DOI: 10.1039/d4cp00334a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
Transition metal oxides are widely used as Fenton-like catalysts in the treatment of organic pollutants, but their synthesis usually requires a high temperature. Herein, an all-solid-state synthesis method controlled by graphene was used to prepare a double pyramid stacked CoO nano-crystal at a low temperature. The preparation temperature decreased by 200 °C (over 30% reduction) due to the introduction of graphene, largely reducing the reaction energy barrier. Interestingly, the corresponding degradation rate constants (kobs) of this graphene-supported pyramid CoO nano-crystals for organic molecules after their adsorption were over 2.5 and 35 times higher than that before adsorption and that of free CoO, respectively. This high catalytic efficiency is attributed to the adsorption of pollutants at the surface by supporting graphene layers, while free radicals activated by CoO can directly and rapidly contact and degrade them. These findings provide a new strategy to prepare low carbon-consuming transition metal oxides for highly efficient Fenton-like catalysts.
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Affiliation(s)
- Kui Lu
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, P. R. China.
- Shanghai Jingyu Environmental Engineering Co. Ltd., Xiner Road, Shanghai 200439, P. R. China
| | - Tao Ding
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, P. R. China.
| | - Mengxiang Zhu
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, P. R. China.
| | - Junjie Chen
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, P. R. China.
| | - Dongting Yue
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, P. R. China.
| | - Xing Liu
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, P. R. China.
| | - Xiaoqin Fang
- Shanghai Jingyu Environmental Engineering Co. Ltd., Xiner Road, Shanghai 200439, P. R. China
| | - Junfang Xia
- Shanghai Jingyu Environmental Engineering Co. Ltd., Xiner Road, Shanghai 200439, P. R. China
| | - Zhiyuan Qin
- Shanghai Jingyu Environmental Engineering Co. Ltd., Xiner Road, Shanghai 200439, P. R. China
| | - Minghong Wu
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, P. R. China.
| | - Guosheng Shi
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, P. R. China.
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Xu L, Liu R, Zhao Y, Shen X, Sun C, Yang Z, Wang J, Du Y, Geng S, Chen F. Coordination-Polymer-Derived Cu-CoO/C Nanocomposite Used in Fenton-like Reaction to Achieve Efficient Degradation of Organic Compounds. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:132. [PMID: 38251097 PMCID: PMC10819537 DOI: 10.3390/nano14020132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/28/2023] [Accepted: 01/03/2024] [Indexed: 01/23/2024]
Abstract
In this paper, carbon-matrix-supported copper (Cu) and cobaltous oxide (CoO) nanoparticles were obtained by using coordination polymers (CPs) as a precursor. The aqueous solutions of copper methacrylate (CuMA) and cobalt methacrylate (CoMA) were preferentially prepared, which were then mixed with anhydrous ethanol to fabricate dual metal ion coordination polymers (CuMA/CoMA). After calcination under an argon atmosphere, the Cu-CoO/C nanocomposite was obtained. Scanning electron microscope (SEM) and transmission electron microscope (TEM) showed that the material has banded morphology, and the dual functional nanoparticles were highly dispersed in the carbon matrix. The prepared material was used in a heterogeneous Fenton-like reaction, with the aim of replacing traditional ferric catalysts to solve pH constraints and the mass production of ferric slime. The obtained nanocomposite showed excellent catalytic performance on the degradation of methylene blue (MB) at near-neutral conditions; the discoloration efficiency is about 98.5% within 50 min in the presence of 0.15 mmol/mL H2O2 and 0.5 mg/mL catalyst. And good reusability was verified via eight cycles. The plausible pathway for MB discoloration and the possible catalytic mechanism was also proposed.
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Affiliation(s)
- Linxu Xu
- Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
| | - Rupeng Liu
- Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
| | - Yubo Zhao
- Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
| | - Xue Shen
- Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
| | - Cuizhen Sun
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Zhigang Yang
- Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
| | - Jin Wang
- Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
| | - Yufeng Du
- Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
| | - Shuying Geng
- Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
| | - Feiyong Chen
- Institute of Resources and Environment Innovation, Shandong Jianzhu University, Jinan 250101, China
- Jianda Ecological Environment Innovation Center, Shandong Jianzhu University, Huzhou 313000, China
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Su C, Tang C, Sun Z, Hu X. Mechanisms of interaction between metal-organic framework-based material and persulfate in degradation of organic contaminants (OCs): Activation, reactive oxygen generation, conversion, and oxidation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 347:119089. [PMID: 37783089 DOI: 10.1016/j.jenvman.2023.119089] [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: 05/30/2023] [Revised: 08/11/2023] [Accepted: 09/01/2023] [Indexed: 10/04/2023]
Abstract
Metal-organic frameworks (MOFs)-based materials have been of great public interest in persulfate (PS)-based catalytic oxidation for wastewater purification, because of their excellent performance and selectiveness in organic contaminants (OCs) removal in complex water environments. The formation, fountainhead and reaction mechanism of reactive oxygen species (ROSs) in PS-based catalytic oxidation are crucial for understanding the principles of PS activation and the degradation mechanism of OCs. In the paper, we presented the quantitative structure-activity relationship (QSAR) of MOFs-based materials for PS activation, including the relationship of structure and removal efficiency, active sites and ROSs as well as OCs. In various MOFs-based materials, there are many factors will affect their performances. We discussed how various surface modification projects affected the characteristics of MOFs-based materials used in PS activation. Moreover, we revealed the process of ROSs generation by active sites and the oxidation of OCs by ROSs from the micro level. At the end of this review, we putted forward an outlook on the development trends and faced challenges of MOFs for PS-based catalytic oxidation. Generally, this review aims to clarify the formation mechanisms of ROSs via the active sites on the MOFs and the reaction mechanism between ROSs and OCs, which is helpful for reader to better understand the QSAR in various MOFs/PS systems.
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Affiliation(s)
- Chenxin Su
- Research Group of Water Pollution Control and Water Reclamation, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Chenliu Tang
- Research Group of Water Pollution Control and Water Reclamation, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Zhirong Sun
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Xiang Hu
- Research Group of Water Pollution Control and Water Reclamation, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
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Tan Y, Chen K, Zhu J, Sun F, Peng H, Zhan T, Lyu J. Gravity-driven rattan-based catalytic filter for rapid and highly efficient organic pollutant removal. J Colloid Interface Sci 2023; 643:124-136. [PMID: 37058888 DOI: 10.1016/j.jcis.2023.03.158] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/06/2023] [Accepted: 03/24/2023] [Indexed: 04/05/2023]
Abstract
Metal organic frameworks hold great promise as heterogeneous catalysts in sulfate radical (SO4∙-) based advanced oxidation. However, the aggregation of powdered MOF crystals and the complicated recovery procedure largely hinder their large-scale practical applications. It is important to develop eco-friendly and adaptable substrate-immobilized metal organic frameworks. Based on the hierarchical pore structure of the rattan, gravity-driven metal organic frameworks loaded rattan-based catalytic filter was designed to degrade organic pollutants by activating PMS at high liquid fluxes. Inspired by the water transportation of rattan, ZIF-67 was in-situ grown uniformly on the rattan channels inner surface using the continuous flow method. The intrinsically aligned microchannels in the vascular bundles of rattan acted as reaction compartments for the immobilization and stabilization of ZIF-67. Furthermore, the rattan-based catalytic filter exhibited excellent gravity-driven catalytic activity (up to 100 % treatment efficiency for a water flux of 10173.6 L·m-2·h-1), recyclability, and stability of organic pollutant degradation. After ten cycles, the TOC removal of ZIF-67@rattan was 69.34 %, maintaining a stable mineralisation capacity for pollutants. The inhibitory effect of the micro-channel promoted the interaction between active groups and contaminants, increasing the degradation efficiency and improving the stability of the composite. The design of a gravity-driven rattan-based catalytic filter for wastewater treatment provides an effective strategy for developing renewable and continuous catalytic systems.
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Affiliation(s)
- Yujing Tan
- College of Materials Science and Engineering, Nanjing Forestry University, 210037 Nanjing, PR China
| | - Kaiwen Chen
- College of Materials Science and Engineering, Nanjing Forestry University, 210037 Nanjing, PR China
| | - Jianyi Zhu
- College of Materials Science and Engineering, Nanjing Forestry University, 210037 Nanjing, PR China
| | - Fengze Sun
- College of Materials Science and Engineering, Nanjing Forestry University, 210037 Nanjing, PR China
| | - Hui Peng
- College of Materials Science and Engineering, Nanjing Forestry University, 210037 Nanjing, PR China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 210037 Nanjing, PR China
| | - Tianyi Zhan
- College of Materials Science and Engineering, Nanjing Forestry University, 210037 Nanjing, PR China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 210037 Nanjing, PR China
| | - Jianxiong Lyu
- College of Materials Science and Engineering, Nanjing Forestry University, 210037 Nanjing, PR China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, 210037 Nanjing, PR China; Research Institute of Wood Industry of Chinese Academy of Forestry, 100091 Beijing, PR China.
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