Synthesis Of Composite Material Anode CdS/TiO2Nanotube
Keywords:
Titanium dioxide, Titanium dioxide Nanotube, Cadmium sulfideAbstract
Titanium dioxide is limited by its high energy bandgap. This work studied synthesis of Titanium dioxide nanotube and Cadmium sulfide on Titanium dioxide nanotube via hydrothermal method for enhancement photoactivity of Titanium dioxide. Investigated factors in this work are concentration of Sodium hydroxide 7-12 M, temperature 120-160oC time of hydrothermal 24-48 hours and ratio of Cadmium sulfide per Titanium dioxide 0.01:1 – 0.2:1. Then this work investigated specific surface area by Bruneur-Emmet-Teller (BET) method, the structure by Transmission Electron Microscopy (TEM), energy bandgap by UV–Visible Diffuse Reflectance Spectroscopy (UV–DRs) and crystal structure by X-ray Diffractometer (XRD). Efficiency of organic degradation was reported from degradation of methylene blue 300 mg/l. The optimum condition for synthesis of cadmium sulfide on titanium dioxide nanotube are 140 oC and ratio of cadmium sulfide to titanium dioxide 0.01:1 for the result of specific surface area 195.89 m2/g and. Cadmium sulfide on titanium dioxide nanotube has lower value of energy band gap to 2.2 eV, higher ability for light absorption and also wider range of absorption wavelength. The XRD result shows crystallinity structure of titanium dioxide anatase and cadmium sulfide in cadmium sulfide on titanium dioxide nanotube. Methylene blue removal by cadmium sulfide on titanium dioxide was at 68 and 46 percentage under UV light and visible light.
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