Porous metal-porphyrin triazine-based frameworks for efficient CO2 electroreduction

被引：59
|
作者：
Feng, Shaohua [1 ]
Zheng, Wanzhen [1 ]
Zhu, Jingke [1 ]
Li, Zhongjian [1 ]
Yang, Bin [1 ]
Wen, Zhenhai [2 ]
Lu, Jianguo [3 ]
Lei, Lecheng [1 ]
Wang, Shaobin [4 ]
Hou, Yang [1 ,5 ,6 ]
机构：
[1] Zhejiang Univ, Coll Chem & Biol Engn, Key Lab Biomass Chem Engn, Minist Educ, Hangzhou 310027, Peoples R China
[2] Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fujian Prov Key Lab Nanomat, Fuzhou 350002, Fujian, Peoples R China
[3] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
[4] Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia
[5] Inst Zhejiang Univ Quzhou, Quzhou 324000, Peoples R China
[6] Zhejiang Univ, Ningbo Res Inst, Ningbo 315100, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2020年 / 270卷
基金：
中国国家自然科学基金; 澳大利亚研究理事会;
关键词：
Porous metal-porphyrin triazine-based frameworks; Electrocatalysis; CO2 reduction reaction; CO Production; SELECTIVE ELECTROCHEMICAL REDUCTION; CARBON-DIOXIDE; OXYGEN REDUCTION; HYDROGEN; SITES; ELECTROCATALYSTS; NANOTUBES; CATALYST;
D O I：
10.1016/j.apcatb.2020.118908
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electrochemical reduction of CO2 (ECR-CO2) into high value-added products plays a crucial role in energy conversions. Herein, we developed a family of porous metal-porphyrin triazine-based frameworks (MPTFs-x, M = Mn, Fe, Co, Ni, and Cu, x = temperature) with a specific surface area up to 977 m(2) g(-1) and homogenously dispersed transition-metals. Benefiting from a high content of N species of 8.43 at.% and abundantly exposed Ni-N-x active sites, NiPTFs-600 displayed a superb Faradaic efficiency (FE) of CO production (> 90 %) in the range of -0.55 V to -0.95 V with the maximum FE of 97.6 % and current density of 10.8 mA cm(-2) at -0.8 V. The reaction mechanism was found to be the adsorption of CO2 molecules to form *CO2 intermediates, accompanied by successive protonation to produce *COOH and then *CO.
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页数：8
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