School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
J Colloid Interface Sci. 2022 Oct 15;624:261-269. doi: 10.1016/j.jcis.2022.05.054. Epub 2022 May 13.
Electrochemical carbon dioxide (CO) reduction reaction (E-CORR) to formate with high selectivity driven by renewable electricity is one of the most promising routes to carbon neutrality. Herein, we developed a novel indium (In)-doped bismuth subcarbonate (BOC) nanosheets (BOC-In-x NSs) through transformation of In-doped bismuth (Bi) nanoblocks (Bi-In-x NBs). The BOC-In-0.1 NSs achieved a maximum Faraday efficiency of formate (FE) nearly 100% with high stability (22 h) and an appreciable average FE of 93.5% in a wide potential window of 450 mV. The experimental and theoretical calculations indicate that the incorporation of In into BOC nanosheets enhanced the adsorption of CO and the intermediates during the process of E-CORR, and reduced the energy barrier for the formation of formate.
电化学二氧化碳（CO）还原反应（E-CORR）将 CO 选择性还原为甲酸盐，是实现碳中和最有前景的途径之一。在此，我们通过掺杂铟的铋纳米块（Bi-In-x NBs）的转化，开发了一种新型的掺铟碳酸铋（BOC）纳米片（BOC-In-x NSs）。BOC-In-0.1 NSs 在 450 mV 的宽电位窗口内，实现了近乎 100%的甲酸盐（FE）的最大法拉第效率（FE）和 22 小时的高稳定性，平均 FE 高达 93.5%。实验和理论计算表明，铟掺入 BOC 纳米片中增强了 CO 的吸附和 E-CORR 过程中的中间产物的吸附，降低了形成甲酸盐的能垒。
