期刊
LANGMUIR
卷 36, 期 39, 页码 11508-11516出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.0c01849
关键词
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资金
- National Natural Science Foundation of China [51309074]
- Natural Science Foundation of Hebei Province [B2016202271]
- Hebei Province Science and Technology Support Program [16273101D]
Reclamation and recycling of heavy metal ions can offer environmental protection and sustainable development. Here, we report the preparation of L-cysteine (L-cys)-doped glucose carbon sphere (GCS)@polypyrrole (PPy) composites (GCS@PPy/L-cys). The adsorption performance and mechanism of GCS@PPy/L-cys toward Cr(VI) from water were investigated in detail. The chromate enrichment on GCS@PPy is significantly facilitated by doping with L-cys, which prevents the oxidative collapse of the structure. This approach leads to many reduction-adsorption sites that reduce the highly hazardous Cr(VI) into less toxic Cr(III). More significantly, the composite can be reused to fabricate supercapacitors that avoid secondary pollution. This strategy offers high-efficiency treatment and sustainable utilization of hypervalent metals in water.
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