Room temperature synthesized layered CAU-17 MOFs for highly active and selective electrocatalytic CO2 reduction to formate
作者:Linhua Mi、Bin Chen、Xin Xu、Siting Cai、Yajun He、Yang Wei、Yaming Jiang、Chaoyang Zheng、Shenghong Zhong、Wenbin Hu、Yan Yu
DOI:10.1016/j.jallcom.2024.173516
日期:2024.3
excellent selectivity towards formate with the maximum Faradaic efficiency of 95.5% at − 1.1 VRHE in an H-cell. Subsequently, the limited catalytic activity of CAU-17-Layer was boosted by anchoring nano CeO2 onto its surfaces (CeO2 @CAU-17-Layer). The as-prepared composite catalyst demonstrated outstanding performance in the conversion of CO2 to formate, with a current density surpassing − 100 mA cm-2
调节金属有机骨架(MOF)的形态已被确定为增强CO 2还原反应(CO 2 RR)电催化性能的有效策略。本研究通过超声辅助方法在室温下制备了CAU-17 MOFs ([Bi(BTC)(H 2 O)]·2 H 2 O·MeOH),与传统的方法相比,该技术被认为是一种更简单的技术。水热法。此外,通过掺入稀土金属(La)进一步调节CAU-17 MOF的形貌,从而观察到两种不同的结构,即CAU-17六角棱柱(CAU-17-HP)和CAU-17层(CAU-17 层)。与 CAU-17-HP 相比,CAU-17-Layer 对甲酸盐表现出优异的选择性,在 H 电池中,在 − 1.1 V RHE下,最大法拉第效率为 95.5%。随后,通过将纳米CeO 2锚定到其表面(CeO 2 @CAU-17-Layer) ,CAU-17-Layer 有限的催化活性得到增强。所制备的复合催化剂在CO 2转化为甲酸盐方面表现出出色的性能,在比−