A new ɛ-Keggin polyoxometalate-based metal-organic framework: From design and synthesis to electrochemical hydrogen evolution

Autor:	Bao-Xia Dong, Kai-Feng Zou, Yun-Lei Teng, Yan-Xia Ding, Chuang Chen, Wen-Long Liu, Meng-Ting Peng, Qiu-Hui Zheng
Rok vydání:	2021
Předmět:	Polyoxometalate Tafel equation Overpotential Metal-organic framework Chemistry Hydrogen bond Process Chemistry and Technology Intermolecular force HER General Chemistry Electrochemistry Hydrothermal Catalysis Hydrothermal circulation Crystallography QD1-999
Zdroj:	Catalysis Communications, Vol 161, Iss, Pp 106367-(2021)
ISSN:	1566-7367
DOI:	10.1016/j.catcom.2021.106367
Popis:	A new ɛ-Keggin polyoxometalate based metal-organic framework, [TBA]3[H4PMo8VMo4VIO40Zn4](HTPT)2 (1) (H3TPT = 1,1′:4′,1″-terphenyl-3,4″,5-tricarboxylic acid, TBA+ = tetrabutylammonium ion) was synthesized under hydrothermal conditions. The tetrahedral Zn4-e-Keggin is connected through angular HTPT2− to form a 2D entangled structure with 2-fold interpenetration. The whole network displays a staggered layer structure in AB/CD/EF/GH/AB/CD/EF/GH arrangement with extensive hydrogen bonding and intermolecular interactions. More interestingly, compound 1 exhibited good hydrogen evolution reaction (HER) activity in an acidic medium, with a Tafel slope of 68 mV·dec−1 and an η10 of 417 mV. It showed an excellent long-term stability, which could maintain its catalytic activity after 1000 cycles.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6112392e90db2d717ec84f62cb5733e https://doi.org/10.1016/j.catcom.2021.106367 Zobrazit plný text záznamu Full Text from ScienceDirect