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Photocatalytic reduction of Cr(VI) by polyoxometalates/TiO2 electrospun nanofiber composites

机译:多金属氧酸盐/ TiO2电纺纳米纤维复合材料光催化还原Cr(VI)

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摘要

Polyoxometalates (Ti0.75PW12O40, Ti-PTA)/TiO2 nanofiber composites were fabricated by a simple electrospinning technique and then high temperature calcination. In the structure, Ti-PTA, as an electron relay, can accept the photo-generated electrons from the conduction band of TiO2, which promote the separation of photo-generated charges in TiO2. Then the electrons stored on Ti-PTA further transfer to the Cr(VI) in the solution to realize the removal of Cr(VI). The Ti-PTA/TiO2 nanofiber composites exhibit enhanced photocatalytic performance for photocatalytic reduction of Cr(VI), which might be a potential photocatalyst for Cr(VI) removal in environmental therapy.
机译:通过简单的静电纺丝技术然后高温煅烧制备了多金属氧酸盐(Ti0.75PW12O40,Ti-PTA)/ TiO2纳米纤维复合材料。在该结构中,Ti-PTA作为电子继电器可以接受来自TiO2导带的光生电子,从而促进了TiO2中光生电荷的分离。然后,存储在Ti-PTA中的电子进一步转移到溶液中的Cr(VI),以实现Cr(VI)的去除。 Ti-PTA / TiO2纳米纤维复合材料对光催化还原Cr(VI)表现出增强的光催化性能,这可能是在环境治疗中去除Cr(VI)的潜在光催化剂。

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