Facile preparation of tetrafluoro-substituted cobalt phthalocyanine nanorods attached on carbon nanotubes for efficient electrocatalytic CO2 reduction

被引：6

作者：

Li, Minzhang ^{[1
]}

Xu, Junyuan ^{[1
]}

Qi, Fei ^{[1
]}

Wang, Yu ^{[1
]}

Yan, Chunliu ^{[2
]}

Xu, Jiaju ^{[1
]}

机构：

[1] Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China

[2] Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2023年 / 27卷 / 05期

关键词：

Electrocatalysis; Cobalt phthalocyanine; Carbon nanotubes; Nanocomposite; CO2; reduction; METAL PHTHALOCYANINES; ELECTROREDUCTION; PERFORMANCE;

D O I：

10.1007/s10008-023-05480-3

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A tetrafluoro substituted CoPc (CoF4Pc), which is well dispersed in N,N-dimethylformamide (DMF), was used to modify carbon nanotubes (CNTs) via a facile sonication method, resulting in CoF4Pc nanorods with the length lower than 30 nm on the CNT surface. The as-fabricated CoF4Pc-CNT composites showed superior CO2RR catalytic activity compared with that of individual CoF4Pc, due to enhanced mass transfer and electrical conductivity arising from the CNT substrate. The CoF4Pc-CNT composite with the CoF4Pc/CNT weight ratio of 2:30 exhibited the highest CO current density of 29.0 mA cm(-2) and CO selectivity of 91.8% at - 0.85 V vs. reversible hydrogen electrode (RHE) in a flow cell setup containing 0.5 M KHCO3, which was ascribed to enhanced charge transfer induced by highly dispersion of CoF4Pc nanorods, and good conductivity of CNT substrates. The work provides new insights for developing low-cost, effective, phthalocyanine-based catalysts for electrochemical CO2RR.

引用

页码：1269 / 1278

页数：10

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