阳离子聚合
替代(逻辑)
铜
催化作用
酞菁
化学
Atom(片上系统)
酞菁铜
材料科学
纳米技术
组合化学
有机化学
计算机科学
光电子学
嵌入式系统
程序设计语言
作者
Chia‐Yu Chang,Wei‐Hsiang Huang,Meng‐Che Tsai,Chih‐Wen Pao,Jeng-Lung Chen,Masato Yoshimura,Nozomu Hiraoka,Chi-Liang Chen,Bing‐Joe Hwang,Wei‐Nien Su
标识
DOI:10.1016/j.mtnano.2024.100466
摘要
Phthalocyanine (PC) has a unique N4-coordinated structure that offers an inherent advantage with respect to the accommodation of metal ions. This feature can help overcome the limitations of many single-atom electrocatalysts, i.e. low loading and poor stability. Here, we detail the development of a universal electrochemical template and a cationic substitution synthesis protocol for preparing various single-atom catalysts with high-loading (≌ 8.6 wt%) from commercial copper phthalocyanine (CuPC). Commercial CuPC is transformed into Cu NPs and vacant N4-sites are created during applied potential cycling. The generated vacant N4-sites, with strong negative charges, can take-up Pd2+ ions from a precursor solution to create single-atom catalysts with Pd high-loadings. The material’s structural transformation and cationic substitution mechanism were investigated by in situ X-ray absorption spectroscopy (XAS). We also demonstrate the viability of extending the proposed electrochemical template synthesis method to the development of other high-loading transition metal single-atom catalysts, e.g., Ni, Co, and Fe.
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