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Continuous polypyrrole nanotubes encapsulated Co_(3)O_(4)nanoparticles with oxygen vacancies and electron transport channels boosting peroxymonosulfate activation

查看全文 作　　者：Dingyang [1]Chen;Wanning [1]Wu;Xinyue [1]Zhao;Danyang [1]Feng;Rui [1]Zhao;Guangshan [1]Zhu 高影响力作者 机构地区：[1]Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education,Faculty of Chemistry,Northeast Normal University,Changchun 130024,China高影响力机构 出　　处：《Nano Research》索引2023年第16卷第8期,共12页高影响力期刊 基　　金：This work was financially supported by the National Key R&D Program of China(No.2022YFB3805900);National Natural Science Foundation of China(Nos.52003040,22131004,and 52273055);Natural Science Foundation of Department of Science and Technology of Jilin Province(Nos.YDZJ202101ZYTS060 and 20210201012GX);the“111”project(No.B18012). 摘　　要：Co_(3)O_(4)particles are promising heterogeneous catalysts for peroxymonosulfate(PMS)activation;whereas they still surfer from the extensive agglomeration,serious Co leaching,poor electronic conductivity,and difficult recovery.Herein,a novel hybrid nanoarchitectonic constructed by encapsulating Co_(3)O_(4)nanoparticles into continuous polypyrrole(PPy)nanotubes(Co_(3)O_(4)@PPy hybrids)was developed using electrospun fibers as the templates,which boosted the catalytic degradation toward tetracycline(TC).The continuous polypyrrole nanotubes could provide the confined spaces,offer effective electron transfer pathway,suppress cobalt ion loss,facilitate the oxygen vacancy(Ovac)formation,and accelerate the Co^(2+)/Co^(3+)cycles.Co_(3)O_(4)@PPy hybrids thereby exhibited a remarkably enhanced catalytic activity with the TC degradation efficiency of 97.2%(kobs=0.244 min^(−1))within 20 min and total organic carbon(TOC)removal rate of 66.8%.Furthermore,the recycle test,real natural water treatment,and fluidized-column catalytic experiments indicated the potential of Co_(3)O_(4)@PPy hybrids in the practical large-scale applications. 关 键 词：polypyrrole(PPy)nanotube Co_(3)O_(4) peroxymonosulfate(PMS) tetracycline(TC)degradation
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