Structural and Optical Properties of ZnO-TiO<sub>2 </sub>Nanocomposite Synthesized with Various Molar Ratios by Hydrothermal Technique-Reference-Cited by-同舟云学术

Structural and Optical Properties of ZnO-TiO<sub>2 </sub>Nanocomposite Synthesized with Various Molar Ratios by Hydrothermal Technique

Published:2022-03-04 Issue: Volume:1055 Page:147-154
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Mohd Nor Asiah¹,Malek Mohd Firdaus¹,Mohamed Ruziana²,Mahmood Mohamad Rusop³

Affiliation:

1. Universiti Teknologi Mara

2. Universiti Teknologi MARA Pahang

3. Universiti Teknologi MARA (UiTM)

Abstract

Zinc oxide-titanium dioxide (ZnO-TiO2) have been successfully synthesized by hydrothermal method. ZnO-TiO2 nanocomposite were prepared at different molar ratio 100:0, 100:0, 30:70, 50:50 and 70:30. The objective of this research is to determine the effect of molar ratios on the structural and optical properties of ZnO-TiO2 nanocomposite. The samples were analyzed using X-ray diffraction (XRD) analysis, Field-emission scanning electron microscopy (FESEM) and UV-Vis spectroscopy. Based on the XRD results, it is revealed that ZnO-TiO2 nanocomposite consists of hexagonal wurtzite structure of ZnO and mixed of anatase/ rutile phase of TiO2. FESEM images showed ZnO in rod-like structure while TiO2 is formed in nanoparticle. ZnO-TiO2 composite is formed combination of rod-like and nanoparticles. UV-Vis spectra showed that all samples exhibited good absorption towards UV region. The calculated energy band gaps of ZnO-TiO2 composite are 2.92 eV which is slightly smaller compared to bulk ZnO and TiO2. The tuning energy band gaps of ZnO-TiO2 composite samples is a good indicator for use in catalytic activities.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.1055.147.pdf

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