Hexavalent chromium (Cr(VI)) is a common hazardous contaminant in the environment and carcinogenic or mutagenic to aquatic animals and human beings. Therefore, the removal and detoxification of Cr(VI) have been attracting increasing attention of researchers. Among various conducting polymers, polyaniline (PANI)-based adsorbents have shown an excellent performance on the removal of Cr(VI) because of their redox properties, eased synthesis, and favorable biocompatibility. In this review, the characteristics of various PANI-based adsorbents were described, including PANI-modified nanofiber mats and membranes, PANI/bio-adsorbents, PANI/magnetic adsorbents, PANI/carbon adsorbents, PANI-modified clay composites, and PANI-inorganic hybrid composites. The mechanisms for the detoxification and adsorption of Cr(VI) were also discussed. The results indicated the potential applications of PANI-based adsorbents for the removal of Cr(VI).

Open image in new window

六价铬（Cr（VI））是环境中常见的有害污染物，对水生动物和人类具有致癌性或致突变性。因此，Cr（VI）的去除和解毒越来越引起研究人员的关注。在各种导电聚合物中，基于聚苯胺（PANI）的吸附剂由于具有氧化还原特性，易于合成和良好的生物相容性，因此在去除Cr（VI）方面表现出优异的性能。在这篇综述中，描述了各种基于PANI的吸附剂的特性，包括PANI改性的纳米纤维垫和膜，PANI /生物吸附剂，PANI /磁性吸附剂，PANI /碳吸附剂，PANI改性的粘土复合物和PANI无机物混合复合材料。还讨论了六价铬的解毒和吸附机理。

在新窗口中打开图像