Next Article in Journal
Experimental and Numerical Determination of the Local Fiber Volume Content of Unidirectional Non-Crimp Fabrics with Forming Effects
Previous Article in Journal
Enhancing the Fracture Toughness Properties by Introducing Anchored Nano-Architectures at the Metal–FRP Composite Interface
Article Menu

Export Article

Open AccessArticle

Studies of Effects of Calcination Temperature on the Crystallinity and Optical Properties of Ag-Doped ZnO Nanocomposites

1
Department of Applied Chemistry & Chemical Engineering, Faculty of Engineering & Technology, University of Dhaka, Dhaka 1000, Bangladesh
2
Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514–8507, Japan
3
Mie Global Environment Center for Education & Research, Mie University, Tsu, Mie 514–8507, Japan
*
Author to whom correspondence should be addressed.
J. Compos. Sci. 2019, 3(1), 18; https://doi.org/10.3390/jcs3010018
Received: 24 January 2019 / Revised: 7 February 2019 / Accepted: 12 February 2019 / Published: 14 February 2019
  |  
PDF [7164 KB, uploaded 14 February 2019]
  |  

Abstract

Ag-doped ZnO nanocomposites are successfully synthesized at different calcination temperatures and times through a simple, effective, high-yield and low-cost mechanochemical combustion technique. Effects of calcination temperature on the crystallinity and optical properties of Ag/ZnO nanocomposites have been studied by X-ray diffraction (XRD), UV−visible diffuse reflectance spectroscopy (UV-DRS), photoluminescence spectroscopy (PL) and X-ray photoelectron spectroscopy (XPS). The XRD patterns of the synthesized Ag/ZnO exhibit a well-crystalline wurtzite ZnO crystal structure. The grain size of Ag/ZnO nanocomposites is found to be 19 and 46 nm at calcination temperatures of 400 °C and 700 °C, respectively. The maximum absorption in the UV region is obtained for Ag/ZnO nanocomposites synthesized at a calcination temperature of 500 °C for 3 h. The peak position of blue emissions is almost the same for the nanocomposites obtained at 300–700 °C calcination temperatures. The usual band edge emission in the UV is not obtained at 330 nm excitation. Band edge and blue band emissions are observed for the use of low excitation energy at 335–345 nm. View Full-Text
Keywords: Ag-doped ZnO; nanocomposites; calcination temperature; crystallinity; optical properties Ag-doped ZnO; nanocomposites; calcination temperature; crystallinity; optical properties
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Molla, M.A.I.; Furukawa, M.; Tateishi, I.; Katsumata, H.; Kaneco, S. Studies of Effects of Calcination Temperature on the Crystallinity and Optical Properties of Ag-Doped ZnO Nanocomposites. J. Compos. Sci. 2019, 3, 18.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
J. Compos. Sci. EISSN 2504-477X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top