Heteroatom-doped porous TiO 2 for H 2 generation
Kennedy West, 2nd year; Chemistry
Dr.Bishnu Bastakoti, Department of Chemistry
TiO 2 is a common source in the use of photocatalytic activity. The addition of heteroatoms in TiO 2 expands the possibilities of the tuning properties such as bandgap magnetic, conducting, and dielectric properties. Nitrogen is less electronegative and more polarizable than oxygen, increasing the photocatalytic performance of Titannum oxynitride. It is valuable due to its redox ability under visible radiation, non-toxicity, high stability, low cost, and efficiency in photocatalytic activity. Bandgap is key in making sure TiO 2 can be used in visible light through nitrogen presence. Aim of the project: This work aims to control the band gap in the synthesis of TiO 2 sample to use it in visible light. The achievement of this will lead to our primary goal of turning water into hydrogen gas which is a renewable resource. The synthesis of the TiO 2 sample acts as a catalyst in order to turn the water into hydrogen gas. Method: Synthesis of TiO 2 was conducted using the materials (F127, Ethanol, Urea, TTIP). The ESIA (evaporated-induced self-assembly) allowed the urea and TTIP to undergo self-assembly with polymers. The sample was then calcined with a nitrogen flow to get TiO 2 . Characterizations used were FTIR, XRD, and SEM. Findings/results/ conclusion: As mentioned above, the preliminary work was a success as the catalyst worked well with the degradation of Congo red dye and significantly degraded the dye in visible light. The characterization showed in the SEM that pores were successfully created. FTIR confirmed the presence of nitrogen in TiO 2 . To conclude, we have a suitable catalyst, but adjustments can be made regarding the amount of nitrogen needed.
West, Kennedy, "Heteroatom-doped porous TiO 2 for H 2 generation" (2023). Undergraduate Research and Creative Inquiry Symposia. 292.