CuS-modified ZnO rod/reduced graphene oxide/CdS heterostructure for efficient visible-light photocatalytic hydrogen generation
CuS-modified ZnO rod/reduced graphene oxide/CdS heterostructure for efficient visible-light photocatalytic hydrogen generation
复制标题
CuS改性ZnO棒/还原氧化石墨烯/CdS异质结构用于高效可见光光催化制氢
DOI：
10.1016/j.ijhydene.2020.07.143
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发表时间：
2020-08
影响因子：
7.2
通讯作者：
Zhang Rongbin
中科院分区：
文献类型：
--
作者：
Wang Xuewen;Li Qiuchan;Xu Haiping;Gan Lei;Ji Xinfei;Liu Hua;Zhang Rongbin
太阳能利用是从水中光催化制取氢气的一种很有前途的策略。本文以锌粉为原料，在室温下通过铜诱导电化学生长制备了CuS修饰的氧化锌棒/还原石墨烯氧化物(RGO)/硫化镉异质结构。所得粉末显示良好的界面结合，促进了光激发载流子的传输。CuS纳米粒子在增强可见光响应方面发挥了关键作用，表现出了优异的催化性能。当CuS含量为0.23%，CdS含量为1.62%时，CuS-μ/RGO/CDS异质结催化剂的可见光催化产氢速率为1073nmol.h-−1g−1。光激发电子寿命的延长、载流子输运速率的提高和荧光强度的降低证实了异质结各组分之间的协同效应。本研究为构建多组分异质结以实现高效的可见光析氢提供了一种创新的策略。
Solar energy utilization is a promising strategy for the photocatalytic generation of H2from water. Herein, a CuS-modified ZnO rod/reduced graphene oxide (rGO)/CdS heterostructure was fabricated via Cu-induced electrochemical growth with Zn powder at room temperature. The resulting powder revealed good interfacial bonding and promoted photoexcited carrier transport. The CuS nanoparticles played a pivotal role in enhancing visible-light responses and demonstrated excellent catalytic performance. A high visible-light photocatalytic H2generation rate of 1073 μmol h−1g−1was obtained from the CuS–ZnO/rGO/CdS heterostructure containing 0.23% CuS and 1.62% CdS. Increased photoexcited electron lifetimes, improved carrier transport rates, and decreased fluorescence intensities confirmed the synergistic effects of each of the components of the heterostructure. This study provides an innovative strategy for constructing multi-component heterostructures to achieve efficient visible-light H2evolution.
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