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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Graphene oxide coated coordination polymer nanobelt composite material: a new type of visible light active and highly efficient photocatalyst for Cr(VI) reduction
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Graphene oxide coated coordination polymer nanobelt composite material: a new type of visible light active and highly efficient photocatalyst for Cr(VI) reduction

机译：氧化石墨烯涂层配位聚合物纳米带复合材料：一种新型的可见光活性和高效光催化剂，用于Cr（VI）还原

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摘要

A visible light active photocatalyst was synthesized successfully by coating graphene oxide (GO) on a coordination polymer nanobelt (CPNB) using a simple colloidal blending process. Compared with neat CPNB, the resulting graphene oxide coated coordination polymer nanobelt composite material (GO/CPNB) exhibits excellent photocatalytic efficiency in the reduction of K2Cr2O7 under visible light irradiation. In the composite material, GO performs two functions. Firstly, it cuts down the band gap (E-g) of the photocatalyst and extends its photoresponse region from the ultraviolet to visible light region. Secondly, GO exhibits excellent electron transportation ability that impedes its recombination with holes, and this can enhance photocatalytic efficiency. For GO, on its surface, the number of functional groups has a great influence on the photocatalytic performance of the resulting GO/CPNB composite material and an ideal GO "coater" to obtain a highly efficient GO/CPNB photocatalyst has been obtained. As a photocatalyst that may be used in the treatment of Cr(VI) in wastewater, GO/CPNB exhibited outstanding stability during the reduction of this pollutant.
机译：通过使用简单的胶体共混工艺将氧化石墨烯（GO）涂覆在配位聚合物纳米带（CPNB）上，成功合成了可见光活性光催化剂。与纯净的CPNB相比，所得的氧化石墨烯包覆的配位聚合物纳米带复合材料（GO / CPNB）在可见光照射下还原K2Cr2O7表现出优异的光催化效率。在复合材料中，GO执行两个功能。首先，它减少了光催化剂的带隙（E-g），并将其光响应区域从紫外线延伸到可见光区域。其次，GO表现出优异的电子传输能力，阻碍了它与空穴的复合，因此可以提高光催化效率。对于GO而言，在其表面上，官能团的数目对所得GO / CPNB复合材料的光催化性能具有很大影响，并且已经获得了用于获得高效GO / CPNB光催化剂的理想的GO“涂层剂”。 GO / CPNB作为一种可用于废水中Cr（VI）处理的光催化剂，在减少这种污染物的过程中表现出出色的稳定性。

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