Synthesis of nanoparticulate Ti-doped ZnO by solution combustion technique
Keywords:ZnO, TiO2, Nanoparticles, Combustion synthesis, Photocatalysis
ZnO and TiO2 have been widely accepted as prominent photocatalysts. Enhancement of their photocatalytic activities can be achieved through particle refinement and doping. Solution combustion technique is a simple and cost-effective method capable of producing fine ceramic powders with homogeneous chemical compositions. It is, therefore, employed in this research project as the technique to synthesize nanometer-sized Ti-doped ZnO powders.Â Â Â The research also aimed at examining a relationship among doping contents, chemical composition, particle sizes, and photocatalytic performance of the synthesized powder. Compositional analysis revealed that the solubility limit of Ti in zinc oxide was within the range of 3 at% Ti. Within the solubility limit, photocatalytic activity was enhanced with the titanium doping. Reduced photocatalytic performance, however, was observed in the powders with titanium contents beyond the solubility limit. The results also indicated that doping concentration did not have a significant effect on particle size and morphology. Equiaxial particles, with the average particle sizes ranging from 46.4 to 48.4 nm, were observed from the SEM micrographs.
N. Padmavathy and R. Vijayaraghavan, “Enhanced bioactivity of ZnO nanoparticles—an antimicrobial study,” Science and Technology of Advanced Materials, vol. 9, pp. 1–7, 2008.
C. B. Ong, L. Y. Ng, and A. W. Mohammad, “A review of ZnO nanoparticles as solar photocatalysts: Synthesis, mechanisms and applications,” Renewable & Sustainable energy Reviews, vol. 81, pp. 536–551, 2017.
N. Xu, Z. Shi, Y. Fan, J. Dong, J. Shi, and M. Z.-C. Hu. “Effects of Particle Size of TiO 2 on Photocatalytic Degradation of Methylene Blue in Aqueous Suspensions,” Industrial & Engineering Chemistry Research, vol. 38, pp. 373–379, 1999.
X. Wang and W. Gong, “Bactericidal and photocatalytic activity of Fe3+-TiO2 thin film prepared by the sol-gel method,” Journal of Wuhan University of Technology- Mater. Sci. Ed., vol. 23, pp. 155-158, 2008.
T. A. Egerton, S. A. M. Kosa, and P. A. Christensen, “Photoelectrocatalytic disinfection of E.coli suspensions by iron doped TiO2,” Physical Chemistry Chemical Physics, vol. 8, pp. 398-406, 2006.
M. A. Johar, R. A. Afzal, A. A. Alazba, and U. Manzoor, “Photocatalysis and bandgap engineering using ZnO nanocomposites,” Advanced Material Science, vol. 2015, pp. 1- 22, 2015.
C. Cheng, A. Amini, C. Zhu, Z. Xu, H. Song, and N. Wang, “Enhanced photocatalytic performance of TiO2-ZnO hybrid nanostructures,” Scientific Reports, vol. 4, pp. 1- 5, 2014.
T. N. Ravishankar, K. Manjunatha, T. Ramakrishnappa, G. Nagaraju, D. Kumar, S. Sarakar, B. S. Anandakumar, G. T. Chandrappa, V. Reddy, and J. Dupont, “Comparison of the photocatalytic degradation of trypan blue by undoped and silver-doped zinc oxide nanoparticles,” Materials Scirnce in Semiconductor Processing, vol. 26, pp. 7–17, 2014.
J. Chen, W. Liao, Y. Jiang, D. Yu, M. Zou, H. Zhu, M. Zhang and M. Du, “Facile fabrication of ZnO/TiO2 heterogeneous nanofibres and their photocatalytic behaviour and mechanism towards rhodamine B,” Nanomaterials and Nanotechnology, vol. 6, pp. 9, 2016.
M. Seery, R. Georgeknutty, and S. C. Pillai, “A highly efficient Ag-ZnO Photocatalyst: synthesis, properties and mechanism,” The Journal of Physical Chemistry C, vol. 112, pp. 13563-13570, 2008.
O. Jongprateep, P. Tangbuppa, and N. Manasnilobon, “Compositions and particle sizes of (RE) Ba2Cu3O7-X superconductor powders synthesized by the solution combustion technique,” Advanced Materials Research, vol. 488-489, pp. 286-290, 2012.
O. Jongprateep, R. Puranasamriddhi and J. Palomas, “Nanoparticulate titanium dioxide synthesized by sol–gel and solution combustion techniques,” Ceramics International, vol. 41, pp. S169-S173, 2015.
B. D. Cullity, Elements of x-ray diffraction (2nd ed.), Philippines: Addison-Wesley Publishing Company, Inc., 1978.
K., Bergum, P. A., Hansen, H., Fjellvåg, and O. Nilsen, “Structural, electrical and optical characterization of Ti-doped ZnO films grown by atomic layer deposition,” Journal of Alloys and Compounds, vol. 616, pp. 618– 624, 2014.
How to Cite
Copyright (c) 2018 Journal of Metals, Materials and Minerals
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.