针对目前Cr(VI) 废水处理工艺中还原剂使用多、铬渣排放多的技术瓶颈，对比性选取耐酸耐碱的柔性三维网格钛（Ti）网、钨（W）网为基底电极，经阳极氧化-煅烧处理，应用异相水热晶体制备技术、在Ti、W网格表面原位生长富电子二维MoS2xSe2(1-x)(x=0~1)超导层。在太阳光激发与外加偏压（<2V）共同驱动下，使其具备高电子产量特性，快速还原水体中的Cr(VI)。以大比表面积磺酸化介孔碳微球组装流动床，基于离子交换原理吸附固定生成的Cr(III)，随后经硫酸酸洗再生；洗脱液经蒸发-结晶生成Cr2(SO4)3，实现Cr(III)元素资源回收。三维Ti、W网兼具柔韧性与导电性，能便捷组装入电路，构建光电化学反应器件，与介孔碳流动床联合应用，避免了常规Cr(VI)处理中铬渣的生产与存放弊端。本研究将为光-电催化技术在Cr污染水体的清洁处理提供基础研究数据，为实际应用提供理论指导。

This project will be carried out for cleaning up the technical bottleneck of suffering excess use of reductants and production of massive Chromium residue during the treatment of Cr(VI)-contaminated water. Three-dimensional Ti and W meshes are selected as the substrates for being anodized. TiO2 and WO3 nanotubes are grown from the Ti and W substrates. After that, calcination will be performed to change the crystalline of the as-prepared TiO2 and WO3, making them stable in acid or alkaline medium. Two dimensional superconductive materials of MoS2xSe2(1-x)(x=0~1) nanosheet or composite crystals based on the nanosheets are in-suit grown on the TiO2 and WO3 nanotubes. The resulted MoS2xSe2(1-x)/Ti(W) nets are with unique physic/chem properties and abundant yield of photo-electricity triggered electrons, which can be applied in fast reduction of Cr(VI). After that, a fixed-bed filled with sulfonated mesoporous carbon is combined. The resulting Cr(III) can be immobilized on the mesoporous carbon based on ion exchange. Then, sulfate acid as eluant is employed to regenerate the mesoporous carbon and produce Cr2(SO4)3 which will be served as raw materials in printing, electroplating and leathermaking, realizing the recovery of Cr(III). As both the 3D Ti and 3D W meshes are solid, soft and conductive substrates, They can be conveniently incorporated as a system core in an apparatus, suggesting a promising application future. The combined techonology can realize the cleaning treatment of Cr(VI) contaminated water with no toxic residue produced.