Nanostructured SrTiO3 with different morphologies achieved by mineral acid-assisted hydrothermal method with enhanced optical, electrochemical, and photocatalytic performances

doi:10.1007/s10854-020-04328-0

CORC > 兰州理工大学 > 兰州理工大学

	Nanostructured SrTiO3 with different morphologies achieved by mineral acid-assisted hydrothermal method with enhanced optical, electrochemical, and photocatalytic performances
	Wang, Shifa 4,5; Gao, Huajing 4,6; Yu, Xianlun 4; Tang, Shengnan 4; Wang, Yong 4; Fang, Leiming 1; Zhao, Xinxin 4; Li, Jinyu 4; Yang, Liang 2; Dang, Wenqiang 3
	2020-10-01
关键词	Azo dyes Crystal impurities Hydrochloric acid Light absorption Mixing Nanoparticles Nitric acid Oxide minerals Photocatalytic activity Sodium hydroxide Strontium titanates Sulfur compounds Sulfuric acid Thallium compounds Titanium dioxideElectrochemical investigations Hydrothermal reaction Nitric acid solutions Optical absorption coefficients Photocatalytic performance Separation efficiency Synthetic parameters Variation tendencies
卷号	31
期号	20
DOI	10.1007/s10854-020-04328-0
页码	17736-17754
英文摘要	SrTiO3 particles with different morphologies can be produced by hydrothermal reaction route using P25 TiO2, Sr(OH)2·8H2O, NaOH, and mineral acid as the starting materials in the presence of dilute nitric acid solution and heated at 220 °C for 24 h. The dilute nitric acid was replaced by the dilute hydrochloric acid or dilute sulphuric acid, and the reaction time was fine adjusted, and this eventually lead to the formation of nanoparticles or mixing of cubes and nanoparticles. Pure SrTiO3 can be obtained by changing the mineral acid to nitric acid or hydrochloric acid and adjusting the reaction time from 24 to 40 h. The mineral acid in the synthetic parameter was changed to sulfuric acid, and the synthesized SrTIO3 sample contained SrSO4 impurities. The electrochemical investigations confirmed that the performance of SrTiO3 rhombus particles in terms of rate capability was significantly higher as compared to the SrTiO3 nanoparticles or mixing of cubes and nanoparticles. Photocatalytic activity test indicated that the SrTiO3 rhombus particles exhibited an exceptional photocatalytic activity for the removal of congo red dye under simulated sunlight irradiation than that of other SrTiO3 samples. The variation tendency of photocatalytic activity for different SrTiO3 samples can be ascribed to the synergistic effects of impurity concentration, energy band, adsorbed oxygen concentration, optical absorption coefficient, charge carrier utilization and separation efficiency, and crystal surface exposure. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.
会议录	Journal of Materials Science: Materials in Electronics
会议录出版者	Springer
语种	英语
ISSN号	09574522
WOS研究方向	Engineering ; Materials Science ; Physics
WOS记录号	WOS:000568805600003
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/132690]
专题	兰州理工大学
作者单位	1.Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang; Sichuan; 621900, China; 2.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China; 3.School of Electronic Information and Electrical Engineering, Tianshui Normal University, Tianshui; Gansu; 741000, China 4.School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, Wanzhou; 404000, China; 5.Chongqing Key Laboratory of Geological Environment Monitoring and Disaster Early-warning in Three Gorges Reservoir Area, Chongqing Three Gorges University, Chongqing, Wanzhou; 404000, China; 6.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Wang, Shifa,Gao, Huajing,Yu, Xianlun,et al. Nanostructured SrTiO3 with different morphologies achieved by mineral acid-assisted hydrothermal method with enhanced optical, electrochemical, and photocatalytic performances[C]. 见:.