3-(3-吡啶)丙烯酸配体杂化的Keggin型多酸基超分子化合物的合成、结构及光催化性能

人工晶体学报 ›› 2023, Vol. 52 ›› Issue (8): 1485-1490.

3-(3-吡啶)丙烯酸配体杂化的Keggin型多酸基超分子化合物的合成、结构及光催化性能

孙佳馨, 李爽, 李晓慧, 史思柳, 刘宝慧, 齐嘉慧, 李嘉琦, 张众

渤海大学化学与材料工程学院,辽宁省全谱太阳能电池转光材料专业技术创新中心,锦州 121013

收稿日期:2023-02-06 出版日期:2023-08-15 发布日期:2023-08-21
通信作者: 李晓慧,博士,讲师。E-mail:lixh198@126.com
张众,博士,副教授。E-mail:zhangzhong666@126.com
作者简介:孙佳馨(2002—),女,辽宁省人。E-mail:eternal1sun@126.com
基金资助:
国家自然科学基金青年科学基金(21901018,22201021);辽宁省自然科学基金面上项目(2022-MS-373);省级大学生创新创业训练计划(S202210167041)

Synthesis, Structure and Photocatalytic Properties of a Keggin-Type Polyoxometalate-Based Supramolecular Complex Hybridized by 3-Pyridineacrylic Acid Ligand

SUN Jiaxin, LI Shuang, LI Xiaohui, SHI Siliu, LIU Baohui, QI Jiahui, LI Jiaqi, ZHANG Zhong

Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar Cell, College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, China

Received:2023-02-06 Online:2023-08-15 Published:2023-08-21

摘要/Abstract

摘要： 本文在水热条件下成功合成了一例Keggin型多酸基超分子化合物1,其分子式为H₃[(3-PA)₄(PW₁₂O₄₀)](3-PA=3-(3-吡啶)丙烯酸),并通过单晶X射线衍射、元素分析(EA)、红外(IR)光谱、X射线粉末衍射(PXRD)、热重(TG)和固体紫外-可见(UV-Vis)漫反射对化合物1的结构进行了表征。化合物1属于三斜晶系,P-1空间群,a=1.200 33(3) nm,b=1.216 42(3) nm,c=1.424 66(4) nm,α=75.030(1)°,β=73.452(1)°,γ=69.372(1)°,V=1.837 00(8) nm³,Z=1,M_r=3 476.78,F(000)=1 538,μ=18.815 mm^-1,D_c=3.143 mg·m^-3,S=1.062,R₁=0.046 2,wR₂=0.138 7。化合物1的结构单元包含一个[PW₁₂O₄₀]^3-多阴离子和四个3-PA配体,并通过[PW₁₂O₄₀]^3-多阴离子和3-PA配体之间的氢键连接形成二维超分子层。化合物1在光催化还原Cr(Ⅵ)反应中展现出良好的光催化活性,并具有较好的结构稳定性和可循环利用性。

关键词: 多金属氧酸盐, 水热合成, 超分子化合物, 光催化, Cr(VI)还原

Abstract: A new Keggin-type polyoxometalate-based supramolecular complex 1, namely H₃[(3-PA)₄(PW₁₂O₄₀)] (3-PA=3-Pyridineacrylic acid), was successfully synthesized under hydrothermal conditions and structurally characterized by single crystal X-ray diffraction, elemental analysis (EA), IR spectra, PXRD, TG and UV-Vis diffuse-reflectance. Complex 1 crystallizes in the triclinic system, P-1 space group with a=1.200 33(3) nm, b=1.216 42(3) nm, c=1.424 66(4) nm, α=75.030(1)°, β=73.452(1)°, γ=69.372(1)°, V=1.837 00(8) nm³, Z=1, M_r=3 476.78, F(000)=1 538, μ=18.815 mm^-1, D_c=3.143 mg·m^-3, S=1.062, R₁=0.046 2, wR₂=0.138 7. The structural unit of complex 1 consists of a [PW₁₂O₄₀]^3- ployanion and four 3-PA ligands. In addition, [PW₁₂O₄₀]^3- polyanion and 3-PA ligands are linked by H-bonds to form 2-D supramolecular layer. When using as photocatalyst, complex 1 displayed excellent photocatalytic activity towards the reduction of Cr(Ⅵ) with good structural stability and recyclability.

Key words: polyoxometalate, hydrothermal synthesis, supramolecular complex, photocatalysis, Cr(VI) reduction

中图分类号:

O611

孙佳馨, 李爽, 李晓慧, 史思柳, 刘宝慧, 齐嘉慧, 李嘉琦, 张众. 3-(3-吡啶)丙烯酸配体杂化的Keggin型多酸基超分子化合物的合成、结构及光催化性能[J]. 人工晶体学报, 2023, 52(8): 1485-1490.

SUN Jiaxin, LI Shuang, LI Xiaohui, SHI Siliu, LIU Baohui, QI Jiahui, LI Jiaqi, ZHANG Zhong. Synthesis, Structure and Photocatalytic Properties of a Keggin-Type Polyoxometalate-Based Supramolecular Complex Hybridized by 3-Pyridineacrylic Acid Ligand[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2023, 52(8): 1485-1490.

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