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CTAC改性活性炭制备CDI电极性能

Environmental Chemistry(2020)

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Abstract
采用十六烷基三甲基氯化铵(CTAC)改性粉末活性炭(PAC),来提高活性炭电极的电化学性能和电极对砷离子的吸附能力.以质量浓度为1 mmol· L-1的CTAC改性粉末活性炭(PAC)12 h,并以此活性炭制备电极,电极的比电容为67 F·g-1,相比未改性PAC电极提升45%,电极扩散电阻稍有增加.通过优化电极制备成分配比,以CB∶PVDF∶CTAC-PAC=15∶5∶80比例制备的CTAC-PAC电极的比电容为112 F·g-1,相比未改性PAC电极提升143%,扩散电阻稍有增加.在100 μg· L-1砷溶液吸附实验中,优化制备条件后的CTAC-PAC电极,对砷离子吸附量相比未改性PAC电极提升32%,出水砷浓度为8μg·L-1.
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