材料科学
光催化
星团(航天器)
密度泛函理论
纳米技术
金属
纳米颗粒
光化学
兴奋剂
带隙
催化作用
计算化学
有机化学
光电子学
化学
计算机科学
冶金
程序设计语言
作者
Haifeng Wang,Fan Wang,Shengjia Zhang,Jing Shen,Xiaolin Zhu,Yuanyuan Cui,Pengfei Li,Chao Lin,Xiaopeng Li,Qi Xiao,Wei Luo
标识
DOI:10.1002/adma.202400764
摘要
Abstract Supported metal catalysts have been exploited in various applications. Among them, cocatalyst supported on photocatalyst is essential for activation of photocatalysis. However, cocatalyst decoration in a controllable fashion to promote intrinsic activity remains challenging. Herein, we developed a versatile method for cocatalyst synthesis using an ice‐templating (ICT) strategy, resulting in size control from single‐atom (SA), and atomic clusters (AC) to nanoparticles (NP). Importantly, the coordination numbers (CN) of decorated AC cocatalysts are highly controllable, and this ICT method applies to various metals (e.g., Ni, Rh, Pt, and Ru) and photocatalytic substrates (e.g., TiO 2 , g‐C 3 N 4 , CdS, and LTCA). Taking narrow‐band gap Ga‐doped La 5 Ti 2 Cu 0.9 Ag 0.1 O 7 S 5 (LTCA) photocatalyst as an example, supported Ru AC/LTCA catalysts with regulable Ru CNs have been prepared, delivering significantly enhanced activities compared to Ru SA and Ru NPs supported on LTCA. Specifically, Ru (CN = 3.4) AC/LTCA with an average CN of Ru‐Ru bond measured to be ∼3.4 exhibits excellent photocatalytic H 2 evolution rate (578 μmol h −1 ) under visible light irradiation. Density functional theory calculation (DFT) reveals that the modeled Ru (CN = 3) atomic cluster cocatalyst possesses favorable electronic properties and available active sites for the H 2 evolution reaction. This article is protected by copyright. All rights reserved
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