光催化
多金属氧酸盐
材料科学
光电流
光化学
磺基水杨酸
硝基苯
介电谱
电化学
联氨(抗抑郁剂)
水合物
无机化学
化学
催化作用
电极
有机化学
物理化学
光电子学
色谱法
作者
Jiachen Jiao,Hui Sun,Si Chen,Jiangbo Xu,Ting Zhang,Qiuxia Han
标识
DOI:10.1021/acsami.1c24911
摘要
A powerful approach to generate photocatalysts for the highly selective reduction of nitrobenzene using light as the driving force is a combination of photosensitizers and electron-storable components in a cooperative photocatalysis fashion. Herein, a new precious metal-free photocatalyst, {ZnW-TPT}, was prepared by incorporating a Zn-substituted monovacant Keggin polyanion [SiZnW11O39]6- and a photoactive organic bridging link 2,4,6-tri(4-pyridyl)-1,3,5-triazine (TPT) into a framework. In this structure, the direct coordination bond between [SiZnW11O39]6- and the TPT ligand and the π-π interactions between TPT molecules help separate and migrate photogenerated carriers, which improves the photocatalytic activity of {ZnW-TPT}. The photoelectrochemical properties of {ZnW-TPT} were well studied by solid UV-vis absorption, fluorescence, transient photocurrent response, and electrochemical impedance spectroscopy tests. {ZnW-TPT} efficiently converts using hydrazine hydrate with 99% conversion and 99% selectivity for anilines under mild conditions.
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