锐钛矿
光催化
材料科学
纳米颗粒
煅烧
无定形固体
打赌理论
钡
兴奋剂
傅里叶变换红外光谱
可见光谱
核化学
亚甲蓝
金红石
钛酸钡
溶胶凝胶
化学工程
比表面积
纳米技术
吸附
化学
陶瓷
物理化学
有机化学
催化作用
复合材料
冶金
工程类
光电子学
作者
S. Mugundan,P. Praveen,Seetharaman Sridhar,S. Balasivanandha Prabu,K. Lawrence Mary,Mohd Ubaidullah,Shoyebmohamad F. Shaikh,S. Kanagesan
标识
DOI:10.1016/j.inoche.2022.109340
摘要
Undoped and barium doped TiO2 (Ba-TiO2) nanoparticles (NPs) were prepared by facile sol-gel method. The synthesized NPs were calcined at 500 °C to change the amorphous NPs into crystalline NPs. The increased size of TiO2 NPs after Ba doping was observed from SEM and TEM analysis. The existence of Ti, O, and Ba elements in Ba-TiO2 NPs was confirmed by EDS and ICP-MS. The XRD profile exhibited the presence of anatase phase and barium titanate phase for Ba-TiO2 NPs. Specific surface area and porosity of pure TiO2 and Ba-TiO2 NPs was studied using BET surface area analyzer. The functional groups of the Ba-TiO2 NPs were identified by FTIR. The Eg of pure TiO2 and Ba-TiO2 NPs was studied by UV–Vis spectrum. From NLO studies, the pure TiO2 NPs showed higher second harmonic generation (SHG) efficiency compared to Ba-TiO2 NPs. The photocatalytic activity of pure TiO2 and Ba-TiO2 NPs was investigated towards the degradation of methylene blue (MB) dye under solar light irradiation. The mineralization of methylene blue dye was studied by TOC analyzer.
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