Structural and Optical Characteristics Transformation in the Sol-Gel Synthesized Pure Titanium Dioxide
J. Environ. Nanotechnol., Volume 5, No 1 (2016) pp. 08-12
Abstract
The TiO2 nanocrystals gaining wide spread attention in research in the field of solar cells, biosensors and photo catalysts due to its remarkable optical and electrical properties. In this present work the titanium dioxide nano crystals were synthesized by using titanium isopropoxide as precursor and isopropyl alcohol as solvent. The ratio of the precursor and the solvent were controlled to bring out the sol-gel. The analysis was carried out for as synthesized sample and the sample annealed at 450 °C, reviles the anatase to rutile phase transformation. SEM photograph confirms the transformation due to annealing. The XRD pattern shows both the samples are in nanoscale with average grain size of 7 nm and 17 nm respectively. The EDX shows the prepared samples are titanium dioxide without any impurity. The UV-Vis absorption study shows that the annealing decreases the band gap of TiO2.
Full Text
Reference
Cao, Y., Yang, W., Chen, Y., Du, H. and Yue, P., Effect of chemisorbed surface species on the photocatalytic activity of TiO2 nanoparticulate films, Appl. Surf. Sci., 236, 223-230(2004).
https://doi.org/10.1016/j.apsusc.2004.04.020
Kun-Mu Lee, Vembu Suryanarayanan, Kuo-Chuan Ho, A study on the electron transport properties of TiO2 electrodes in dye-sensitized solar cells, Sol. Energy Mater. Sol. Cells., 91, 1416-1420(2007).
https://doi.org/10.1016/j.solmat.2007.03.007
Luke B. Roberson, Mark A. Poggi, Janusz Kowalik, Greg P. Smested, Lawrence A. Bottom Ley, Larsen, M. and Tolbert, Correlation of morphology and device performance in inorganic–organic TiO2–polythiophene hybrid solid-state solar cells, Coord. Chem. Rev., 248(13), 1491-1499(2004).
Mane, R. S., Yunhee Hwang, Lokhande, C. D., Sartale, S. D. and Sung-Hwan Han, Room temperature synthesis of compact TiO2 thin films for 3-D solar cells by chemical arrested route, Appl. Surf. Sci., 246(1–3), 271–278(2005).
https://doi.org/10.1016/j.apsusc.2004.11.023
More, A. M., Gunjakar, J. L. and Lokhande, C. D., Liquefied petroleum gas (LPG) sensor properties of interconnected web-like structured sprayed TiO2 films, Sens. Actuators B, 129, 671-677(2008).
https://doi.org/10.1016/j.snb.2007.09.026
Mosaddeq-Ur-Rahman, Md., Murali Krishna, K., Takashi Miki, Tetsu Soga, Kazoo Igarashi, sakaltanemura and Masayoshi Umeno, Investigation of solid state pb doped TiO2 solar cell, Sol. Energy Mater. Sol. Cells., 48, 123-130(1997).
https://doi.org/10.1016/S0927-0248(97)00080-9
Patil, U. M., Gurav, K. V., Oh-shim Joo and Lokhande, C. D., Synthesis of photosensitive nanograined TiO2 thin films by SILAR method, J. Alloys Compd., 478(1-2), 711-715(2009).
https://doi.org/10.1016/j.jallcom.2008.11.160
Regan, B. O. and Gratzel, M., A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films, Nat., 353, 737-740(1991).
https://doi.org/10.1038/353737a0
Sanghun Loe, Yongseok Jun, Kang-Jin Kim and Donghwan Kim, Modification of electrodes in nanocrystalline dye-sensitized TiO2 solar cells, Sol. Energy Mater. Sol. Cells., 65(1-4), 193-200(2001).
https://doi.org/10.1016/S0927-0248(00)00095-7
Senthil, T. S., Muthukumarasamy, N. and Misook Kang, Ball/dumbbell-like structured micrometer-sized Sb2S3 particles as a scattering layer in dye-sensitized solar cells, Opt. Lett., 39(7), 1865-1868(2014).
https://doi.org/10.1364/OL.39.001865
Weiying Li, Junjie Kang, Xueping Li, Shibi Fang, Yuan Lin, Guiquang Wang and Xurui Xiao, A novel polymer quaternary ammonium iodide and application in quasi-solid-state dye-sensitized solar cells, J. Photochem. Photobiol. A, 170, 1-6(2005).
https://doi.org/10.1016/j.jphotochem.2004.07.016
Zhaoyue Liu, Kaipan, Min Lie, Quinglin Shang, Jun Li, Yang Liu, Qiang Lu, Jinghone Li, DejunWang, Yubai Bai and Tiejin Li, Influence of the binder on the electron transport in the dye-sensitized TiO2 electrode, Thin Solid Films, 484(1-2), 346-351(2005).
