典型文献
Peroxymonosulfate enhanced photoelectrocatalytic oxidation of organic contaminants and simultaneously cathodic recycling of silver
文献摘要:
Degradation of organic contaminants with simultaneous recycling of Ag+from silver-containing organic wastewater such as photographic effluents is desired.Although photo-electrocatalysis(PEC)technology is a good candidate for this type of wastewater,its reaction kinetics still needs to be improved.Herein,peroxymonosulfate(PMS)was employed to en-hance the PEC kinetics for oxidation of phenol(PhOH)at the anode and reduction of Ag+at the cathode.The degradation efficiency of phenol(PhOH,0.1 mmol/L)was increased from 42.8%to 96.9%by adding 5 mmol/L PMS at a potential of 0.25 V.Meanwhile,the Ag(by wt%)deposited on the cathode was 28.1%(Ag2O)in PEC process,while that of Ag(by wt%)was 69.7%(Ag0)by adding PMS.According to the electrochemistry analysis,PMS,as photoelec-trons acceptor,enhances the separation efficiency of charges and the direct h+oxidation of PhOH at the photoanode.Meantime,the increasing cathode potential avoided H2 evolution and strongly alkaline at the surface of cathode,thus enabling the deposition of Ag+in the form of metallic silver with the help of PMS.In addition,PMS combined with PEC process was effective in treating photographic effluents.
文献关键词:
中图分类号:
作者姓名:
Huixin Shao;Xia Li;Juanjuan Zhang;Xu Zhao
作者机构:
Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Pollution Control and Resources Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;Beijing Capital Co.Ltd.,Beijing 100028,China
文献出处:
引用格式:
[1]Huixin Shao;Xia Li;Juanjuan Zhang;Xu Zhao-.Peroxymonosulfate enhanced photoelectrocatalytic oxidation of organic contaminants and simultaneously cathodic recycling of silver)[J].环境科学学报(英文版),2022(10):74-83
A类:
photoelectrocatalytic,Ag+from,PhOH,Ag+at,h+oxidation,Ag+in
B类:
Peroxymonosulfate,enhanced,organic,contaminants,simultaneously,cathodic,recycling,silver,Degradation,containing,wastewater,such,photographic,effluents,desired,Although,electrocatalysis,PEC,technology,good,candidate,this,type,its,reaction,kinetics,still,needs,be,improved,Herein,peroxymonosulfate,PMS,employed,phenol,reduction,cathode,degradation,efficiency,increased,by,adding,potential,Meanwhile,wt,deposited,Ag2O,process,that,Ag0,According,electrochemistry,analysis,trons,acceptor,enhances,separation,charges,direct,photoanode,Meantime,increasing,avoided,H2,evolution,strongly,alkaline,surface,thus,enabling,deposition,form,metallic,help,In,addition,combined,effective,treating
AB值:
0.475325
相似文献
机标中图分类号,由域田数据科技根据网络公开资料自动分析生成,仅供学习研究参考。