Cadmium Sulfide 3D Photonic Crystal with Hierarchically Ordered Macropores for Highly Efficient Photocatalytic Hydrogen Generation

被引：31
作者：
Lin, Qingzhuo [1 ]
Liang, Shudong [1 ]
Wang, Jintao [1 ]
Zhang, Rongbin [1 ]
Wang, Xuewen [1 ]
机构：
[1] Nanchang Univ, Coll Chem, Key Lab Jiangxi Prov Environm & Energy Catalysis, Nanchang 330031, Jiangxi, Peoples R China
来源：
INORGANIC CHEMISTRY | 2022年 / 61卷 / 06期
基金：
中国国家自然科学基金;
关键词：
SENSING PERFORMANCE; FACILE SYNTHESIS; SLOW PHOTONS; WATER; CONVERSION; SHELL; PHOTOCORROSION; COMPOSITES; INHIBITION; CATALYSIS;
D O I：
10.1021/acs.inorgchem.1c03798
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Cadmium sulfide is a potential candidate for photocatalytic water splitting. However, CdS nanoparticles have a high recombination rate of photoinduced carriers induced by aggregation. Therefore, decreasing the recombination rate and increasing the migration rate of photogenerated carriers are essential to drive the development and application of CdS in hydrogen production. In this study, we design CdS with a three-dimensional ordered macroporous (3DOM) structure using polymethylmethacrylate as a template. It not only retains the excellent visible light response of CdS but also improves the easy recombination of photogenerated carriers in CdS nanoparticles by taking advantage of the unique ability of mass transfer, charge separation, and migration in the 3DOM structure. Meanwhile, the highly ordered periodic structure of 3DOM CdS can produce a slow photon effect of photonic crystals to obtain more photoinduced carriers. In particular, we found that a suitable stop-band position is beneficial to maximize the utilization of the slow photon effect. The photocatalytic hydrogen evolution rate of Pt-CdS is considerably improved after constructing the 3DOM structure. This study provides a new design strategy of ordered macroporous sulfide catalysts to achieve high photocatalytic activity.
引用
收藏
页码：2920 / 2928
页数：9
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