Zhang Lijing, Zhu Xiufang, Zhao Yuanyuan, Zhang Pengyu, Chen Jing, Jiang Jinlong, Xie Tengfeng
College of Chemical Engineering, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology Huaian 223003 China
State Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry, Jilin University Changchun 130012 China
RSC Adv. 2019 Dec 2;9(68):39604-39610. doi: 10.1039/c9ra06034k.
Solar-driven H generation from water splitting with semiconductor materials is considered an effective solution to solve the problems of energy shortage and environmental pollution at a low cost. In this study, a highly efficient photocatalyst Ni@NiO/CdS for H evolution was synthesised using a simple solvothermal method and calcination. The HRTEM results and elemental mapping tests confirmed that Ni@NiO was successfully loaded on the surface of CdS. For Ni@NiO loaded, Ni@NiO/CdS exhibited remarkable photocatalytic H evolution activity of 87.6 μmol h, which was about 104 times higher than that of pure CdS. The enhanced H evolution activity of Ni@NiO/CdS was ascribed to the prolonged lifetime of the photogenerated charges and the reduced surface overpotential for H evolution.
利用半导体材料通过水分解实现太阳能驱动产氢被认为是一种低成本解决能源短缺和环境污染问题的有效方案。在本研究中，采用简单的溶剂热法和煅烧合成了一种用于析氢的高效光催化剂Ni@NiO/CdS。高分辨透射电子显微镜（HRTEM）结果和元素映射测试证实Ni@NiO成功负载在CdS表面。对于负载Ni@NiO的情况，Ni@NiO/CdS表现出显著的光催化析氢活性，为87.6 μmol/h，约为纯CdS的104倍。Ni@NiO/CdS析氢活性增强归因于光生电荷寿命的延长和析氢表面过电位的降低。
