Abstract:
Titanium Dioxide-Bronze (TiO2-B) is one of the most important metastable polymorph of 11 reported phase of TiO2 which has potential application on energy storage materials like lithium ion batteries, water reductions, cleaning agents and solar cells due to its pseudo capacitive intrinsic electronic properties, metastable and large surface area. First time we reported a scalable high temperature stable pure crystalline template assisted metastable TiO2-B (bronze) nanoparticles. These nanostructures are highly crystalline, stable in high temperature, pure and easy to synthesis in very large scale (~25 g scale) at room temperature. Powder x-ray diffraction pattern and Raman spectra shows our template assisted nanoparticles are no impurities and shows all vivid characterization peaks of pure metastable TiO2-B phase. We used scanning electronic microscope (SEM) and HR-TEM for surface morphology and nitrogen adsorption-desorption isotherm (BET) for surface area and BJH methods for pore volume characterization of these nanostructures. To check the catalytic activities, we tested these sample for waste water treatment like methylene blue and 4-chlorophenol degradation. The surface area of TiO2-B NPs is168 m2g-1, total pore volumes are 0.33cm3g-1, and average pore diameter 7.9 nm which is sufficiently high to exhibit remarkable photocatalytic activities compared to other nanostructure of TiO2-B.