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A New Multi-Copper-Substituted Tetramer Tungstoantimonate: Synthesis, Photocatalytic and Electrochemical Properties
Journal of Cluster Science ( IF 2.7 ) Pub Date : 2021-04-05 , DOI: 10.1007/s10876-021-02059-8
Zhong Zhang , Lin Yang , Na Xu , Xiao-Hui Li

Under hydrothermal conditions, a new “S”-shaped Cu-substituted tetramer tungstoantimonate, HKNa2(H2en)6[Cu(en)(H2O)]2[KNaCu3(H2O)7(B-a-SbW9O33)2]2⋅16H2O (1, en = 1,2-ethylenediamine) was synthesized in reactions of the Na9[SbW9O33]·19.5H2O precursor with CuCl2⋅2H2O and potassium acetate in the presence of en and characterized by IR spectrum, thermogravimetric analysis (TGA), powder X-ray diffraction (PXRD) and single-crystal X-ray diffraction, respectively. Polyoxoanion 1 consists of two asymmetric sandwich-type polyanions {KNaCu3(H2O)7(B-a-SbW9O33)2} linked by two structurally equivalent [Cu4(en)(H2O)]2+ bridges. The electrochemical properties and photocatalytic activities have been investigated, displaying outstanding photocatalytic and electrocatalytic activities for the photodegradation of MB and H2O2/NO2/BrO3 reduction.



中文翻译:

一种新型的多铜取代的四钨钨酸锑盐:合成,光催化和电化学性质

在水热条件下,一种新的“ S”形Cu取代的四聚体钨锑酸盐HKNa 2(H 2 en)6 [Cu(en)(H 2 O)] 2 [KNaCu 3(H 2 O)7(Ba-SbW 9 ø 332 ] 2 ⋅16H 2 O(1,EN = 1,2-乙二胺)以Na的反应合成9 [线控9 ø 33 ]·19.5H 2 ö前体与氯化亚铜2 ⋅2H 2O和乙酸钾在en的存在下分别通过红外光谱,热重分析(TGA),粉末X射线衍射(PXRD)和单晶X射线衍射进行表征。聚氧阴离子1由两个不对称的夹心型聚阴离子{KNaCu 3(H 2 O)7(Ba-SbW 9 O 332 }通过两个结构上等价的[Cu4(en)(H 2 O)] 2+桥连接。研究了电化学性能和光催化活性,显示出对MB和H 2 O 2 / NO光降解的出色的光催化和电催化活性。2 - /的BrO 3 -还原。

更新日期:2021-04-05
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