材料科学
无定形固体
多孔性
窗口(计算)
化学工程
纳米技术
多孔介质
纳米管
碳纳米管
复合材料
结晶学
化学
计算机科学
工程类
操作系统
作者
Xin Li,Jun‐Hao Wang,Chen‐Yue Yuan,Qiang Sun,Jiang Shao,Xing‐Chi Li,Zhaochi Feng,Hao Dong,C. Li,Yawen Zhang
标识
DOI:10.1002/adfm.202402220
摘要
Abstract The CO 2 electroreduction reaction using sustainable electricity emerges as a viable strategy to produce high‐value‐added and profitable chemicals. The achievement of superior activity at a lower overpotential and higher selectivity in a wide potential window is vitally important for large‐scale industrial applications. Herein, a carbon‐composite amorphous porous BiSbO x nanotube with abundant unsaturated sites is reported to boost the conversion of CO 2 to formate, exhibiting a formate selectivity of >90% in an extremely broad range of potentials from −0.5 to −1.4 V versus reversible hydrogen electrode (RHE) and a maximal energy conversion efficiency of 77.1%. Importantly, pure formic acid solution is directly obtained in a solid‐electrolyte cell for industrial‐scale applications. The porous tubular structure can expose more catalytic active sites, accelerate the mass transfer, and show fast surface charge transfer. Moreover, the unique coordination‐unsaturated Sb‐stabilized BiO 8−x site can not only enhance the adsorption and activation of CO 2 but also reasonably balance the stabilization and hydrogenation of *OCHO intermediate, thus leading to its obviously higher catalytic performance. As a result, a novel amorphous porous BiSbO x nanotube is successfully designed for efficient CO 2 electroreduction, which may shed new light on developing many more amorphous composite metal oxide catalysts for conversion of inert small molecules.
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