3D-printed MoS_(2)/Ni electrodes with excellent electro-catalytic performance and long-term stability for dechlorination of florfenicol  

作　　者：Jianhui Xu Pengxu Wang Shenggui Chen Lei Li Dan Li Yunfei Zhang Qi Wu Jinhong Fan LumingMa 

机构地区：[1]School of Environment and Civil Engineering,Dongguan University of Technology,Dongguan 523808,China [2]School of Art and Design,Guangzhou Panyu Polytechnic,Guangzhou 511483,China [3]National Engineering Research Center for Urban Pollution Control,State Key Laboratory of Pollution Control and Resources Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China [4]Dongguan Institute of Science and Technology Innovation,Dongguan University of Technology,Dongguan 523808,China [5]School of Mechanical Engineering,Dongguan University of Technology,Dongguan 523808,China

出　　处：《Journal of Environmental Sciences》2024年第3期420-431,共12页环境科学学报（英文版）

基　　金：supported by the Guangdong Province Youth Innovative Talents Project in Higher Education (No.2018KQNCX257);the Guangdong Province Enterprise Science and Technology Commissioner Project (No.GDKTP2021048000);the Key-Area Research and Development Program of Guangdong Province (No.2020B090923002);the Guangdong-Dongguan Joint Fund (No.2019B151530005);the Guangdong Basic and Applied Basic Research Foundation (No.2019A1515110497);the National Natural Science Foundation of China (No.41907292);the National Natural Science Foundation of China (No.21876130)。

摘　　要：Here,we report the production of 3D-printed MoS_(2)/Ni electrodes(3D-MoS_(2)/Ni)with longterm stability and excellent performance by the selective laser melting(SLM)technique.As a cathode,the obtained 3D-MoS_(2)/Ni could maintain a degradation rate above 94.0%for forfenicol(FLO)when repeatedly used 50 times in water.We also found that the removal rate of FLO by 3D-MoS_(2)/Ni was about 12 times higher than that of 3D-printed pure Ni(3D-Ni),attributed to the improved accessibility of H^(*).In addition,the electrochemical characterization results showed that the electrochemically active surface area of the 3D-MoS_(2)/Ni electrode is about 3-fold higher than that of the 3D-Ni electrode while the electrical resistance is 4 times lower.Based on tert-butanol suppression,electron paramagnetic resonance and triple quadrupole mass spectrometer experiments,a“dual path”mechanism and possible degradation pathway for the dechlorination of FLO by 3D-MoS_(2)/Ni were proposed.Furthermore,we also investigated the impacts of the cathode potential and the initial pH of the solution on the degradation of FLO.Overall,this study reveals that the SLM 3D printing technique is a promising approach for the rapid fabrication of high-stability metal electrodes,which could have broad application in the control of water contaminants in the environmental field.

关 键 词：3D-print ELECTROREDUCTION MoS_(2)/Ni Antibiotic Florfenicol 

分 类 号：X703[环境科学与工程—环境工程] TQ426[化学工程]