Structure-catalytic functionality of size-facet-performance in pentlandite nanoparticles  

作　　者：Chenxu Zhang Chao Jiang Qi Tang Zeshuo Meng Yaxin Li Yanan Wang Yanan Cui Wei Shi Shansheng Yu Hongwei Tian Weitao Zheng 

机构地区：[1]Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering,Jilin University,Changchun 130012,Jilin,China [2]Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials,Jilin University,Changchun 130012,Jilin,China

出　　处：《Journal of Energy Chemistry》2023年第3期438-446,I0012,共10页能源化学（英文版）

基　　金：financially supported by the Scientific and Technological Development Program of Jilin Province(Grant No.20220201138GX);the Project for Self-innovation Ability Construction of Jilin Province Development and Reform Commission(Grant No.2021C026);the Project Supported by Graduate Innovation Fund of Jilin University。

摘　　要：As one of the pentlandites,Fe5Ni4S8(FNS) based materials have attracted increasing attention due to their excellent catalytic properties and promising applicability.The control over the catalyst surface structure often benefits its heterogeneous catalytic activity.However,this has not been investigated for FNS materials at the nanoscale regarding the catalytic activity related to high-index facets.Herein,FNS nanoparticles(FNSNPs) with enclosed continuous tunable high-index facets were prepared and studied to clarify the relationship between the structure and catalytic functionality.The results suggested strong dependence between exposed facets of FNSNPs and their sizes.The decline in the average size to5.8 nm led to enclosing by high-index facets(422) and(511) to yield optimal electrocatalytic activities toward the hydrogen evolution reaction.The catalytic activity of FNSNPs was closely related to the surface energy of the main exposed facets.These findings clarified the relationship between high-index-facet and high-surface-energy FNSNPs,as promising approaches in crystal surface control engineering.

关 键 词：Structure-activity relationship Size-facet-performance Active facet PENTLANDITE NANOPARTICLES 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O643.36[理学—物理化学]