用于制氢的CuO/TiO八面体高效光催化剂
Highly Active Photocatalyst of CuO/TiO Octahedron for Hydrogen Generation.
作者信息
Li Guojing, Huang Jiquan, Chen Jian, Deng Zhonghua, Huang Qiufeng, Liu Zhuguang, Guo Wang, Cao Rong
机构信息
Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, and State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
University of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
出版信息
ACS Omega. 2019 Feb 14;4(2):3392-3397. doi: 10.1021/acsomega.8b03404. eCollection 2019 Feb 28.
Heterojunction catalysts are attracting attention in the field of photocatalytic hydrogen generation for their effective light utilization and charge separation personalities. In this work, we report a simple and low-cost two-step solvothermal method for synthesizing CuO/TiO heterojunction catalysts with an octahedral morphology and a mean particle size of about 30 nm. It is found that the introduction of CuO astonishingly enhances the photocatalytic performance of TiO. Under the condition of methanol acting as a sacrificial agent, the heterojunction with 0.19% Cu species shows an optimal hydrogen generation rate of 24.83 mmol g h, which is nearly 3 orders of magnitude higher than that of the pristine TiO catalyst.
异质结催化剂因其有效的光利用和电荷分离特性而在光催化制氢领域备受关注。在这项工作中，我们报道了一种简单且低成本的两步溶剂热法，用于合成具有八面体形态且平均粒径约为30 nm的CuO/TiO异质结催化剂。研究发现，CuO的引入惊人地提高了TiO的光催化性能。在甲醇作为牺牲剂的条件下，含0.19%铜物种的异质结表现出24.83 mmol g⁻¹ h⁻¹的最佳产氢速率，这比原始TiO催化剂的产氢速率高出近3个数量级。
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