新型炭材料（中英文）2024，Vol.39Issue(1)：164-172,9.DOI:10.1016/S1872-5805(24)60832-2
Ir纳米团簇负载于ZIF-8衍生的氮掺杂炭框架用于高效析氢反应
Ir nanoclusters on ZIF-8-derived nitrogen-doped carbon frameworks to give a highly efficient hydrogen evolution reaction
摘要
Abstract
The precise change of the electronic structure of active metals using low-active supports is an effective way of devel-oping high-performance electrocatalysts.The electronic interaction of the metal and support provides a flexible way of optimizing the catalytic performance.We have fabricated an efficient hydrogen evolution reaction(HER)electrocatalyst,in which Ir nanoclusters are uniformly loaded on a nitrogen-doped carbon framework(Ir@NC).The synthesis process entails immersing an annealed zeolitic imidazolate framework-8(ZIF-8),prepared at 900 ℃ as a carbon source,into an IrCl3 solution,followed by a calcination-reduction treatment at 400 ℃ under a H2/Ar atmosphere.The three-dimensional porous structure of the nitrogen-doped carbon framework ex-poses more active metal sites,and the combined effect of the Ir clusters and the N-doped carbon support efficiently changes the elec-tronic structure of Ir,optimizing the HER process.In acidic media,Ir@NC has a remarkable HER electrocatalytic activity,with an overpotential of only 23 mV at 10 mA cm-2,an ultra-low Tafel slope(25.8 mV dec-1)and good stability for over 24 h at 10 mA cm-2.The high activity of the electrocatalyst with a simple and scalable synthesis method makes it a highly promising candidate for the in-dustrial production of hydrogen by splitting acidic water.关键词
铱纳米团簇/氮掺杂炭载体/电子相互作用/电催化/析氢反应Key words
Ir nanoclusters/Nitrogen-doped carbon support/Electronic interaction/Electrocatalysis/Hydrogen evolution reaction分类
化学化工引用本文复制引用
王希澳,公衍尚,刘之坤,巫培山,张立学,孙建坤..Ir纳米团簇负载于ZIF-8衍生的氮掺杂炭框架用于高效析氢反应[J].新型炭材料（中英文）,2024,39(1):164-172,9.基金项目
This research was funded by the China Postdoc-toral Science Foundation(2020M671990)and the Qingdao Applied Fundamental Research Project. 中国博士后科学基金(2020M671990) （2020M671990）
青岛市应用基础研究项目. （）
