Trimetallic NixCoyAlz LDH-Modified g-C3N4 with Influential Effects of M2+/M3+ (Ni/Co) Active Centers for Stimulating Photocatalytic Hydrogen Production

结晶学 X射线晶体学 材料科学 物理 化学 衍射 光学
作者
Areen Sherryna,Muhammad Tahir,Zaki Yamani Zakaria
出处
期刊:ACS applied energy materials [American Chemical Society]
卷期号:7 (15): 6289-6311 被引量:2
标识
DOI:10.1021/acsaem.4c00895
摘要

Developing a highly efficient photocatalytic system is a sustainable approach for generating clean hydrogen to address the proliferating consumption of primary energy sources. In this study, trimetallic NixCoyAlz LDH with a controlled surface morphology was designed and incorporated with g-C3N4 to construct a highly efficient S-scheme electron transfer system. The coeffects of regulating the cationic composition of LDH and the dominance of Ni, Co, and Al as active centers in the LDH framework were investigated. Configuring the cationic composition of NixCoyAlz LDH with the M2+/M3+ interaction results in variations in the band gap value and photonic characteristics, influencing its performance efficiency and light absorption capability. The optimal design of Ni1Co1Al1 LDH exhibited exceptional photochemical efficiency with stable structural formation and enhanced reduction ability, significantly improving photocatalytic hydrogen production. The optimal electronic structures of trimetallic Ni1Co1Al1 LDH enable the efficient construction of an S-scheme system in a binary nanocomposite. The S-scheme charge transfer system offers spatial separation of photogenerated charges and suppresses their recombination, resulting in maximal hydrogen production, reaching up to 338 μmol g–1 h–1 in 10–2NiCoAlCN. The photocatalytic activity test over consecutive cycles revealed a stable and gradual hydrogen yield, demonstrating good chemical stability. This study explored the intercorrelation between the cationic effects on the photocatalytic properties of NixCoyAlz LDH, which can serve as valuable insight for further research in this field.
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