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Zhang C, Yang K, Yuan Y, Cao X, Wang H, Sakamaki T, Li X. Material modification of electrodes in microbial electrochemical system to enhance electrons utilization on the electrode and its impact on microorganisms. JOURNAL OF HAZARDOUS MATERIALS 2024; 475:134908. [PMID: 38889459 DOI: 10.1016/j.jhazmat.2024.134908] [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: 01/24/2024] [Revised: 04/12/2024] [Accepted: 06/12/2024] [Indexed: 06/20/2024]
Abstract
Previous research has established a MES embedding a microbial electrode to facilitate the degradation of antibiotics in water. We modified microbial electrodes in the MES with PEDOT and rGO to enhance electron utilization on electrodes and to further promote antibiotic degradation. Density functional theory calculations on the SMX molecule indicated that the C4-S8 and S8-N27 bonds are the most susceptible to electron attack. The introduction of various functional groups and multivalent elements enhanced the electrodes' capacitance and electron mediation capabilities. This led to enhance both electron utilization on the electrodes and the removal efficiency of SMX. After 120 h, the degradation efficiency of SMX by PEDOT and rGO-modified electrodes increased by 45.47 % and 25.19 %, respectively, compared to unmodified electrodes. The relative abundance of sulfate-reducing and denitrifying bacteria significantly increased in PEDOT and rGO-modified electrodes, while the abundance of nitrifying bacteria and potential antibiotic resistance gene host microbes significantly decreased. The impact of PEDOT modification positively influenced microbial Cellular Processes, including cell growth, death, and motility. This study provides insights into the mechanisms of direct electron involvement in antibiotic degradation steps in microbial electrochemistry, and provides a possible path for improved strategies in antibiotic degradation and sustainable environmental remediation.
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Affiliation(s)
- Chong Zhang
- School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Ke Yang
- School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Yali Yuan
- School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Xian Cao
- School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Hui Wang
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Department of Municipal and Environmental Engineering, Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an 710048, China
| | - Takashi Sakamaki
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki 6-6-06, Sendai 980-8579, Japan
| | - Xianning Li
- School of Energy and Environment, Southeast University, Nanjing 210096, China.
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Chen J, Fei M, Ni M, Wang Y, Liu Z, Xie Y, Zhao P, Zhang Z, Fei J. Multilayer Ti 3C 2-CNTs-Au Loaded with Cyclodextrin-MOF for Enhanced Selective Detection of Rutin. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310217. [PMID: 38361221 DOI: 10.1002/smll.202310217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/25/2024] [Indexed: 02/17/2024]
Abstract
In this work, multi-layer Ti3C2 - carbon nanotubes - gold nanoparticles (Ti3C2-CNTs-Au) and cyclodextrin metal-organic framework - carbon nanotubes (CD-MOF-CNTs) have been prepared by in situ growth method and used to construct the ultra-sensitive rutin electrochemical sensor for the first time. Among them, the large number of metal active sites of Ti3C2, the high electron transfer efficiency of CNTS, and the good catalytic properties of AuNPs significantly enhance the electrochemical properties of the composite carbon nanomaterials. Interestingly, CD-MOF has a unique host-guest recognition and a large number of cavities, molecular gaps, and surface reactive groups, which gives the composite outstanding accumulation properties and selectivity for rutin. Under the optimized conditions, the constructed novel sensor has satisfactory detection performance for rutin in the range of 2 × 10-9 to 8 × 10-7 M with a limit of detection of 6.5 × 10-10 M. In addition, the sensor exhibits amazing anti-interference performance against rutin in some flavonoid compounds and can be used to test natural plant samples (buckwheat, Cymbopogon distans, and flos sophorae immaturus). This work has promising applications in the field of environmental and food analysis, and exploring new directions for the application of Mxene-based composites.
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Affiliation(s)
- Jia Chen
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Maoheng Fei
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Meijun Ni
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Yilin Wang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Zhifang Liu
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Yixi Xie
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Pengcheng Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Zhiyong Zhang
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, P. R. China
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, School of Electronics, Peking University, Beijing, 100871, P. R. China
| | - Junjie Fei
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, P. R. China
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan, 411105, P. R. China
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