Small⁃size Au nanoparticles anchored on pyrenyl⁃graphdiyne for N_(2)electroreduction  

芘基石墨炔负载小尺寸金纳米颗粒用于氮气电还原

作　　者：LIU Chang ZHANG Chao LU Tongbu 刘畅;张超;鲁统部(天津理工大学材料科学与工程学院,新能源材料与低碳技术研究院,天津300384)

机构地区：[1]Institute for New Energy Materials and Low Carbon Technologies,School of Materials Science&Engineering,Tianjin University of Technology,Tianjin 300384,China

出　　处：《无机化学学报》2025年第1期174-182,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.U21A20286,21931007)资助。

摘　　要：A gold catalyst of Au/pyrenyl‑graphdiyne(Pyr‑GDY)was prepared by anchoring small size of gold nanoparticles(Au NPs)on the surface of Pyr‑GDY for electrocatalytic nitrogen reduction reaction(eNRR),in which Au NPs with a size of approximately 3.69 nm was evenly distributed on spongy‑like porous Pyr‑GDY.The catalyst exhibited a good electrocatalytic activity for N_(2)reduction in a nitrogen‑saturated electrolyte,with an ammonia yield of 32.1μg·h^(-1)·mg_(cat)^(-1)at-0.3 V(vs RHE),3.5 times higher than that of Au/C(Au NPs anchored on carbon black).In addition,Au/Pyr‑GDY showed a Faraday efficiency(FE)of 26.9%for eNRR,and a good catalysis durability for over 22 h.采用海绵状芘基石墨炔(Pyr‑GDY)锚定金纳米颗粒制备催化剂Au/Pyr‑GDY,其中金纳米粒子的平均尺寸为3.69 nm。该催化剂在氮气饱和的电解液中表现出良好的电催化氮气还原活性,在-0.3 V(vs RHE)条件下,氨产率为32.1μg·h^(-1)·mg_(cat)^(-1),是Au/C(锚定在炭黑上的金纳米颗粒)的3.5倍。此外,Au/Pyr‑GDY电催化氮气还原反应的法拉第效率为26.9%,并且具有超过22 h的催化耐久性。

关 键 词：graphdiyne small‑size Au nanoparticle electrocatalytic nitrogen reduction 

分 类 号：O614.123[理学—无机化学]