A Hydrothermal Route to the Synthesis of CaTiO3 Nanocuboids Using P25 as the Titanium Source

• Published in: Journal of electronic materials 2018-05, Vol.47 (5), p.3045-3050
• Main Authors: Yan, Yuxiang, Yang, Hua, Zhao, Xinxin, Zhang, Haimin, Jiang, Jinlong
• Format: Article
• Language: English
• Subjects: Calcium titanate; Catalytic activity; Characterization and Evaluation of Materials; Chemistry and Materials Science; Diffuse reflectance spectroscopy; Electrochemical impedance spectroscopy; Electron microscopy; Electronics and Microelectronics; Instrumentation; Materials research; Materials Science; Optical and Electronic Materials; Photocatalysis; Rhodamine; Scanning electron microscopy; Solid State Physics; Spectrum analysis; Titanium; Ultraviolet reflection; X ray powder diffraction; X-rays
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-018-6183-z

CaTiO 3 nanocuboids (width 0.3–0.5  μ m, length 0.8–1.1  μ m) have been synthesized by a hydrothermal route using commercial P25 as the titanium source. The as-prepared sample was systematically characterized by means of x-ray powder diffraction, field-emission scanning electron microscopy, field-emission transmission electron microscopy, x-ray photoelectron spectroscopy, Brunauer–Emmett–Teller, ultraviolet–visible diffuse reflectance spectroscopy and electrochemical impedance spectroscopy. The photocatalytic activity of the sample was evaluated by degrading rhodamine B under simulated sunlight irradiation. It is demonstrated that CaTiO 3 nanocuboids exhibit superior photocatalytic activity when compared with CaTiO 3 nanoparticles. By investigating the effect of scavengers on the dye degradation and the yield of hydroxyl (·OH) radicals, it is concluded that ·OH is the dominant reactive species.