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首页> 外文期刊>Journal of environmental sciences >Electrochemical dechlorination of chloroform in neutral aqueous solution on palladium/foam-nickel and palladium/polymeric pyrrole film/foam-nickel electrodes
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Electrochemical dechlorination of chloroform in neutral aqueous solution on palladium/foam-nickel and palladium/polymeric pyrrole film/foam-nickel electrodes

机译：钯/泡沫镍和钯/聚合物吡咯膜/泡沫镍电极在中性水溶液中氯仿的电化学脱氯

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摘要

Electrochemical dechlorination of chloroform in neutral aqueous solution was investigated using palladium-loaded electrodes at ambient temperature.Palladium/foam-nickel(Pd/foam-Ni)and palladium/polymeric pyrrole film/foam-nickel(Pd/PPy/foam-Ni)composite electrodes which provided catalytic surface for reductive dechlorination of chloroform in aqueous solution were prepared using an electrodepositing method.Scanning electron microscope(SEM)micrographs showed that polymeric pyrrole film modified the electrode-surface characteristics and resulted in the uniform dispersion of needle-shaped palladium particles on foam-Ni supporting electrode.The experimental results of dechlorination indicated that the removal efficiency of chloroform and current efficiency in neutral aqueous solution on Pd/PPy/foam-Ni electrode could be up to 36.8% and 33.0% at dechlorination current of 0.1 mA and dechlorination time of 180 min,which is much higher than that of Pd/foam-Ni electrode.
机译：在室温下，使用钯负载电极研究了氯仿在中性水溶液中的电化学脱氯。钯/泡沫镍（Pd /泡沫-Ni）和钯/聚合物吡咯膜/泡沫镍（Pd / PPy /泡沫-Ni）采用电沉积方法制备了复合电极，该复合电极为水溶液中的氯仿的还原脱氯提供了催化表面。扫描电子显微镜（SEM）显微照片显示，聚合物吡咯膜改变了电极的表面特性，并导致针状钯的均匀分散脱氯实验结果表明，在0.1的脱氯电流下，Pd / PPy /泡沫-Ni电极上氯仿的去除效率和中性水溶液中的电流效率分别可达36.8％和33.0％。 mA和脱氯时间为180分钟，远高于Pd /泡沫-Ni电极的脱氯时间。

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