Installation of high-valence tungsten in MIL-125(Ti) for boosted photocatalytic hydrogen evolution

被引：11
作者：
Zhang, Yijun [1 ]
Mao, Fangxin [1 ]
Liu, Yuanwei [1 ]
Wu, Xuefeng [1 ]
Wen, Chunfang [1 ]
Dai, Sheng [2 ]
Liu, Pengfei [1 ]
Yang, Huagui [1 ]
机构：
[1] East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China
[2] East China Univ Sci & Technol, Key Lab Adv Mat & Feringa Nobel Prize Scientist J, Sch Chem & Mol Engn, Inst Fine Chem, Shanghai 200237, Peoples R China
来源：
SCIENCE CHINA-MATERIALS | 2022年 / 65卷 / 05期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
high-valence state; metal-organic frameworks; metal-to-cluster charge transfer; photocatalytic hydrogen production; METAL-ORGANIC FRAMEWORK; WATER; GENERATION; CATALYSTS; DESIGN;
D O I：
10.1007/s40843-021-1898-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Metal-organic frameworks (MOFs) possess the features of highly porosity-tunable and electronic-tunable structures, . Taking advantages of these merits, we successfully installed high-valence W6+ ions onto the Ti-oxo clusters of MIL-125(Ti) (W-MIL-125). The installed W6+ ions which form a W-O-Ti structure trigger the metal-to-cluster charge transfer (MCCT), together with an enhanced light absorption. Structural and spectroscopic characterizations reveal that the MCCT process optimizes the charge transfer process and efficiently separates the photogenerated electron-hole spatially. The as-obtained sample of 3.45 W-MIL-125 with optimized electronic structure demonstrates an enhanced photocatalytic hydrogen evolution performance of 1110.7 +/- 63.7 mu mol g(-1)h(-1) under light irradiation, which is 4.0 times that of the pristine MIL-125(Ti). This work will open up a new avenue for local structural modification of MOFs to boost photocatalytic performance.
引用
收藏
页码：1237 / 1244
页数：8
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