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    陈硕

    • 教授   博士生导师   硕士生导师
    • 主要任职:无
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 在职信息:在职
    • 所在单位:环境学院
    • 学科:环境工程 环境科学
    • 办公地点:大连理工大学环境学院B717
    • 联系方式:0411-84706263
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    Superpermeable nanoporous carbon-based catalytic membranes for electro-Fenton driven high-efficiency water treatment

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    论文类型:期刊论文

    第一作者:Zhang, Qi

    通讯作者:Chen, S (reprint author), Dalian Univ Technol, Key Lab Ind Ecol & Environm Engn, Minist Educ, Sch Environm Sci & Technol, Dalian 116024, Peoples R China.

    合写作者:Chen, Shuo,Quan, Xie,Liu, Yan,Yu, Hongtao,Wang, Hua

    发表时间:2018-12-14

    发表刊物:JOURNAL OF MATERIALS CHEMISTRY A

    收录刊物:SCIE

    卷号:6

    期号:46

    页面范围:23502-23512

    ISSN号:2050-7488

    摘要:Based on the Hagen-Poiseuille equation, theoretical membrane permeability is inversely and directly proportional to its thickness and pore-radius, respectively, indicating that a thin membrane with an effective pore-radius is extremely permeable. However, the trade-off between selectivity and permeability restricts their applications for pressure-driven separation membranes. Hence, balancing the contradiction between the permeability and selectivity of a separation membrane is desired in future applications. Herein, we report a superpermeable nanoporous carbon (PC) membrane which offers a separation layer (approximate to 80 nm) and effective pore radius (approximate to 20 nm) by selectively removing parts of carbon atoms, thus greatly decreasing the transport resistance of water molecules through the membrane. The experimental results have shown a water flux of approximate to 8000 L m(-2) h(-1) bar(-1) for the membrane. High selectivity is demonstrated via selective separation of nanoparticles with their narrowly distributed pores. Self-production of H2O2 and self-circulation of Fe2+/Fe3+ was achieved simultaneously on the PC membrane via coupling with electro-Fenton technology, which leads to the in situ production of hydroxyl radicals. The removal efficiencies of organic contaminants (SMX, BPA and phenol) by electro-Fenton driven PC membranes were approximate to 96.3%, approximate to 97.4% and 92.1%, respectively. Given their compatible high permeability and high selectivity, our porous PC membranes might provide an alternative as future membranes and motivate the design of innovative membranes.