光催化
材料科学
催化作用
氢
化学工程
化学物理
工程物理
纳米技术
生物
生物化学
物理
量子力学
工程类
作者
Penghui Bai,Chenjie Wang,Juan Xie,Hu Wang,Xiaolan Kang,I‐Ming Chen,Xia Wang
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2023-06-23
卷期号:34 (36): 365402-365402
被引量:2
标识
DOI:10.1088/1361-6528/acda3c
摘要
Abstract In this study, we present a facile wet chemical method for synthesizing Ni-modified polymeric carbon nitride (g-C 3 N 4 ) nanosheets. X-ray absorption fine structure spectroscopy reveals the formation of a unique Ni–N structure, resulting from Ni atoms anchoring in cavities of g-C 3 N 4 . The Ni anchoring on the surface N sites modifies the electronic structure of g-C 3 N 4 , demonstrating remarkable effectiveness even at low anchoring amounts. The as-prepared Ni/g-C 3 N 4 catalysts show robust performance for photocatalytic hydrogen evolution under visible light irradiation, attributed to the unique Ni–N interactions. Specifically, the photocatalytic H 2 production rate of the Ni/CN-45 catalyst reached 8482.14 μ mol·g −1 ·h −1 with an apparent quantum efficiency of 0.75% under light irradiation at 427 nm. This rate surpasses most of the previously reported g-C 3 N 4 based photocatalysts and is nearly 8 times higher than that of the pure g-C 3 N 4 catalyst (1116.07 μ mol·g −1 ·h −1 ).
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