Ni修饰八面体TiO2纳米颗粒的制备及其产氢性能研究
Preparation and Hydrogen Production Performance of Ni-modified Octahedral TiO2 Nanoparticles
姬圆圆 1谢鹏 1秦俊豪 1黄涛 2唐爱国 2李敏1
作者信息
- 1. 湖北工业大学 材料与化学工程学院,湖北 武汉 430068
- 2. 湖北工建绿色材料投资有限公司,湖北 武汉 430068
- 折叠
摘要
TiO2 因其优异的光催化活性被广泛用于光催化产氢性能的研究.以钛酸钾纳米线为原料,以NH4Cl和NH3·H2O为混合溶液,通过一步水热法合成了结晶性和均匀性较好的八面体TiO2 纳米颗粒,并采用光沉积技术将Ni修饰到TiO2的表面获得Ni修饰八面体TiO2 纳米颗粒.产氢性能测试表明,相比于原始八面体TiO2,Ni的修饰能够显著抑制其光生电子—空穴的复合,极大地提高了其光催化产氢性能.当Ni的修饰量为 3 wt.%时,其光解水制氢的效率达到最佳,在 1 h内产氢量可以达到 2.11 mmol·g-1.
Abstract
TiO2 has been widely used in the study of photocatalytic hydrogen production because of its excellent photocatalytic activity.Octahedral TiO2 nanoparticles were synthesized by using a one-step hydrothermal method with potassium titanate nanowires as raw materials in NH4Cl and NH3·H2O mixed solutions.The synthesized octahedral TiO2 nanoparticles has high crystallinity and uniformity.Various contents of Ni were deposited on surface of the TiO2 nanoparticles by using light deposition technology.It is experimentally found that the modification of Ni can significantly inhibit the recombination of photogenerated electron and holes,thus greatly improving the efficiency of hydrogen production.When the modification content of Ni is 3 wt.%,the hydrogen production efficiency of photolysis water is optimized,with the hydrogen production rate reaching 2.11 mmol·g-1 within 1 h.
关键词
TiO2/光催化/水解制氢/Ni修饰Key words
TiO2/photocatalysis/hydrogen production by hydrolysis/Ni modification引用本文复制引用
基金项目
湖北省自然科学基金(2019CFB524)
出版年
2024
国家科技期刊平台
NSTL
万方数据