在線閱讀 --自然科學版 2021年3期《Keggin型磷鉬酸鹽超分子配合物的合成及光催化還原Cr(Ⅵ)的應用》
畢昊學, 李穩, 張雅琪, 馬媛媛, 韓占剛
河北師范大學 化學與材料科學學院, 河北省功能有機分子重點實驗室, 國家實驗化學教育示范中心, 河北 石家莊 050024
起止頁碼: 283--289頁
DOI: 10.13763/j.cnki.jhebnu.nse.202103009

Synthesis of Keggin Type Molybdophosphate Supramolecular Complex and Its Application in Photocatalytic Reduction of Cr(Ⅵ)
BI Haoxue, LI Wen, ZHANG Yaqi, MA Yuanyuan, HAN Zhangang
Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Materials Science, Hebei Normal University, Hebei Shijiazhuang 050024, China
In this work,a Keggin-type supramolecular complex with formula of (H2bpe)(Hbpe)[PMo12O40]·6H2O (1) (bpe=trans-1,2-bi(4-pyridyl)-ethylene) was hydrothermally synthesized and characterized by single crystal X-ray diffraction,infrared spectrum,powder X-ray diffraction,thermogravimetry TG,cyclic voltammetry,UV-vis diffuse-reflectance spectroscopy.Compound 1 was constructed by[PMo12O40]3- polyoxoanions and protonated bpe cations,and the hydrogen bonding interactions between them extended the whole structure into three-dimensional supramolecular structure.The UV-vis DRS spectrum demonstrated that compound 1 has wide absorption range towards visible-light and suitable energy band structure.When using as photocatalyst,compound 1 showed excellent photocatalytic performance towards the reduction of Cr(Ⅵ).The reduction rate of Cr (Ⅵ) can reach to 72% within 80min.After 4 cycles,the structure is still ingood condition.This work provides a newguidance for the design and preparation of highly efficient Cr(Ⅵ) photocatalysts based on polyoxometalates.

收稿日期: 2020-11-08
基金項目: 國家自然科學基金(21871076,21901060);大學生課外學術科技創新基金(AE2020102203215)

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