Synthesis and characterization of TiO2 nanorods by hydrothermal method with different pH conditions and their photocatalytic activity
Synthesis and characterization of TiO2 nanorods by hydrothermal method with different pH conditions and their photocatalytic activity
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DOI：
10.1016/j.apsusc.2019.144058
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发表时间：
2020-01
影响因子：
6.7
通讯作者：
K. Santhi;M. Navaneethan;S. Harish;S. Ponnusamy;C. Muthamizhchelvan
中科院分区：
文献类型：
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作者：
K. Santhi;M. Navaneethan;S. Harish;S. Ponnusamy;C. Muthamizhchelvan
采用水热法合成了不同pH条件下的无表面活性剂二氧化钛纳米棒。用X射线衍射仪、场发射扫描电子显微镜、紫外可见光谱、傅里叶变换红外光谱和X射线光电子能谱对纳米棒的结构、形貌和骨架取代进行了表征。X-射线衍射仪分析证实形成了具有四方结构的锐钛矿型二氧化钛。FESEM显微照片证实了纳米棒的形成。从光吸收光谱中可以看出，TiO2纳米棒的带隙随pH的增加而减小。XPS谱证实了Ti2p态和O1s态的存在。考察了纳米棒对甲基橙(MO)的光催化活性，结果表明，在150 min内，MO的降解率最高(51%)。
Surfactant free Titanium dioxide (TiO2) nanorods under different pH conditions were synthesized by a hydrothermal method. The structure, morphology and framework substitution of the as – prepared nanorods was characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), UV–Visible, Fourier Transform Infrared (FTIR) and X-ray Photon Spectroscopy (XPS). XRD analysis confirms the formation of anatase phase of TiO2with tetragonal structure. FESEM micrograph confirms the formation of nanorods. The calculated band gap values of TiO2nanorods was found to decrease with increasing pH from the optical absorption spectra. XPS spectra confirm the presence of Ti 2p and O 1s states. The photocatalytic activity of the nanorods against methyl orange (MO) was examined and their results have shown highest degradation (51%) of MO was achieved within 150 min.