In-depth thermal, microstructural and photoluminescence analysis of mesoporous ZnO/ZnAl2o4-MMO: The effect of molar ratio

Document Type

Article

Publication Date

10-1-2021

Abstract

This manuscript reports a detailed preparation and characterization of mesoporous ZnO/ZnAl2O4 mixed metal oxide (MMO) through a two-step solution procedure utilizing Zn/Al layered double hydroxide (LDH) as starting materials. The influence of the molar ratio was comprehensively explored via a number of characterization techniques. Field emission scanning electron microscopy analysis revealed the occurrence of a sheet-like morphology with thickness of 65 nm at molar ratio (r = 6). Simultaneously, a mesoporous nature of the deposited film was observed through the surface area analysis. A considerable value of surface area was obtained (53.3 m(2) g(-1)) through which a high amount of dye was loaded on the deposited film (3.3 x 10(-4)); the latter was evaluated via a regression equation in conjunction with the ultraviolet visible light analysis. This in turn led to a robust correlation between the anticipated surface area, pore size, and the estimated dye loading amount. Moreover, the optical and photoluminescence (PL) features were investigated using UV-vis and PL techniques, wherein the near-band emission (was observed at around 380 nm. The proposed work may provide an alternative eco-friendly approach for future visible light photodetector application.

Keywords

Mesoporous ZnO/ZnAl2O4, Mixed metal oxide (MMO), Photodetector application, Ultraviolet visible light analysis, Layered double hydroxide

Publication Title

ECS Journal of Solid State Science and Technology

Divisions

fac_eng

Funders

Deputyship for Research & Innovation, Ministry of Education in Saudi Arabia [Grant no: 375213500],Central laboratory at Jouf University,King Khalid University

Volume

10

Issue

10

Publisher

Electrochemical Soc Inc

Publisher Location

65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA

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