Formation, control and functionalization of nanoporous zinc by selective corrosion of Al-Zn alloys with varying compositions

被引：0

作者：

Zhang, Xueying ^{[1
]}

Yu, Bin ^{[1
]}

Zhang, Chi ^{[2
]}

Zhang, Zhonghua ^{[1
]}

机构：

[1] Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jingshi Rd 17923, Jinan 250061, Peoples R China

[2] Wuyi Univ, Sch Appl Phys & Mat, Jiangmen 529020, Peoples R China

来源：

CRYSTENGCOMM | 2024年 / 26卷 / 08期

基金：

中国国家自然科学基金;

关键词：

CARBON-DIOXIDE; ELECTROCATALYTIC REDUCTION; ELECTROCHEMICAL REDUCTION; CO2; CATALYSTS; AG; ELECTROREDUCTION; NANOSTRUCTURES; CONVERSION; INSIGHTS;

D O I：

10.1039/d3ce01139a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work investigates the impact of alloy composition on the microstructure and phase distribution of rapidly solidified Al-Zn alloys. The results demonstrate that the size and distribution of alpha-Al grains vary with the Zn content, and a Zn-rich phase precipitates along the grain boundaries with Zn content over 15 at%. Furthermore, the alloy composition of the Al-Zn precursors significantly influences the formation, microstructure, crack appearance and length scale of ligaments in nanoporous zinc (NP-Zn) prepared by dealloying. Additionally, the activity and selectivity of NP-Zn in CO2 electroreduction were explored in an aqueous KHCO3 electrolyte. The results indicate that a smaller ligament size of NP-Zn is more conducive to enhancing the catalytic performance. The research underscores the potential for adjusting the nanostructure of NP-Zn by controlling the composition of precursor alloys, providing valuable insights for designing efficient Zn-based electrocatalysts. Nanoporous zinc with a bicontinuous ligament/channel structure has abundant active sites and fast charge transfer behavior, leading to efficient conversion of CO2 to CO.

引用

页码：1150 / 1158

页数：9