钙钛矿(结构)
催化作用
兴奋剂
材料科学
惰性
电化学
选择性
无机化学
吸附
八面体
化学
结晶学
电极
晶体结构
物理化学
生物化学
有机化学
光电子学
作者
Yuxi Li,Yu Zhang,Lei Shi,Xiangjian Liu,Zhenbao Zhang,Minghao Xie,Yuming Dong,Heqing Jiang,Yongfa Zhu,Jiawei Zhu
出处
期刊:Small
[Wiley]
日期:2024-05-07
标识
DOI:10.1002/smll.202402823
摘要
Abstract Perovskite oxides are proven as a striking platform for developing high‐performance electrocatalysts. Nonetheless, a significant portion of them show CO 2 electroreduction (CO 2 RR) inertness. Here a simple but effective strategy is reported to activate inert perovskite oxides (e.g., SrTiO 3 ) for CO 2 RR through slight Cu 2+ doping in B‐sites. For the proof‐of‐concept catalysts of SrTi 1−x Cu x O 3 (x = 0.025, 0.05, and 0.1), Cu 2+ doping (even in trace amount, e.g., x = 0.025) can not only create active, stable CuO 6 octahedra, increase electrochemical active surface area, and accelerate charge transfer, but also significantly regulate the electronic structure (e.g., up‐shifted band center) to promote activation/adsorption of reaction intermediates. Benefiting from these merits, the stable SrTi 1−x Cu x O 3 catalysts feature great improvements (at least an order of magnitude) in CO 2 RR activity and selectivity for high‐order products (i.e., CH 4 and C 2+ ), compared to the SrTiO 3 parent. This work provides a new avenue for the conversion of inert perovskite oxides into high‐performance electrocatalysts toward CO 2 RR.
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