文献类型：期刊文献

英文题名：Meso-macroporous Carbons Decorated with Ample Nitrogen Sites as Bifunctional Catalysts in CO2 Catalytic Conversion and Oxygen Reduction Reaction

作者：Liu, Jing[1];Shan, Xinggang[2];Wang, Gangqiang[2];Kong, Weiping[1]

机构：[1]Shaoxing Univ, Dept Comp Sci & Engn, Shaoxing 312000, Peoples R China;[2]Zhejiang Sci Tech Univ, Keyi Coll, 58 Kangyang Ave, Shaoxing 312369, Zhejiang, Peoples R China

年份：2021

卷号：6

期号：7

起止页码：1570

外文期刊名：CHEMISTRYSELECT

收录：SCI-EXPANDED(收录号：WOS:000618784100019)、、WOS

基金：This work was supported by National Natural Science Foundation of China (grant no. 21573150).

语种：英文

外文关键词：CO2 capture and conversion; heterogeneous catalysis; mesoporous materials; nitrogen-doping; oxygen reduction reaction

外文摘要：Electrocatalysts are vulnerable for poisoning during the process of oxygen reduction reaction (ORR), even the air containing traces of acidic CO2 gas, leading to low activity and durability in fuel cells. Herein, an anti-CO2 poisoning metal-free carbon ORR catalysts were derived from fructose and g-C3N4, along with NaCl as both pore-forming template and structure protective agent, conducting to a three-dimensional meso-macroporous carbon (3D-NHPC-x) architecture with large BET surface areas (479 similar to 753 m(2)/g), ultrahigh nitrogen doping level (14.7 wt %similar to 16.5 wt %) and high ratios of pyridinic and pyrrolic characteristics. The samples were designated as 3D-NHPC-x, and the absorbed CO2 electrocatalyst shows a half-wave potential of 0.76 V (vs. RHE) in alkaline electrolyte with robust long-term stability and methanol tolerance, which may provide a facile route of producing high-performance and anti-CO2 poisoning ORR catalyst. The 3D-NHPC-x can also be employed as efficient catalysts in CO2 capture and catalytic conversion to cyclic carbonate, superior to various materials used in the field. This work develops green and sustainable route for preparation of efficient and anti-CO2 poisoning hierarchical porous carbon based ORR catalysts.