N-doped peanut-shaped carbon nanotubes for efficient CO2 electrocatalytic reduction

被引:30
作者
Zhou, Wenyang [1 ,2 ]
Shen, Haoming [2 ]
Wang, Qian [1 ,2 ]
Onoe, Jun [3 ]
Kawazoe, Yoshiyuki [4 ,5 ]
Jena, Puru [6 ]
机构
[1] Peking Univ, Coll Engn, Ctr Appl Phys & Technol, HEDPS, Beijing 100871, Peoples R China
[2] Peking Univ, Coll Engn, Dept Mat Sci & Engn, BKL MMD, Beijing 100871, Peoples R China
[3] Nagoya Univ, Dept Energy Sci & Engn, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan
[4] Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808577, Japan
[5] SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Kattankulathur 603203, Tamil Nadu, India
[6] Virginia Commonwealth Univ, Dept Phys, Richmond, VA 23284 USA
基金
中国国家自然科学基金;
关键词
ELECTROCHEMICAL REDUCTION; HIGHLY EFFICIENT; DIOXIDE; CONVERSION; GRAPHENE; DEFECTS; SYSTEM; ARRAYS; DIMERS; TIO2;
D O I
10.1016/j.carbon.2019.05.078
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
Using first principles calculations and the computational hydrogen electrode (CHE) model, we present the first systematic study of CO2 electrocatalytic reduction (CO2ER) on recently synthesized peanutshaped carbon nanotube (FP5N) as well as N-doped FP5N structures. We find FP5N to be metallic with the symmetry of D5h point group. In addition, nitrogen doping in FP5N significantly reduces the overpotential of CO2ER. In contrast to graphitic N that reduces CO2 into CO with an overpotential of 0.65 V, the pyrrolic N, octatomic N and pyridinic N in FP5N convert CO2 into CH3OH with even lower overpotentials of 0.52, 0.52 and 0.60 V, respectively. These values are comparable to those of industrial transition metal catalysts and show that N-doped peanut-shaped carbon nanotubes can outperform conventional N-doped carbon nanomaterials in CO2 reduction. (C) 2019 Published by Elsevier Ltd.
引用
收藏
页码:241 / 246
页数:6
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