Propitious Escalation in Photocurrent Response from MnZnO3 Thin Films Using Methanol as Sacrificial Agent

Mansoor, Muhammad Adil and Lim, Su Pei and Yusof, Farazila and Ming, Huang Nay (2019) Propitious Escalation in Photocurrent Response from MnZnO3 Thin Films Using Methanol as Sacrificial Agent. Journal of Electronic Materials, 48 (7). pp. 4375-4380. ISSN 0361-5235

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Official URL: https://doi.org/10.1007/s11664-019-07224-4

Abstract

Abstract: The thin film of MnZnO3 was prepared from Mn-Zn complex [Mn2Zn2(TFA)8(THF)4]n(1) (where TFA = trifluroactetato and THF = tetrahydrofuran) via aerosol-assisted chemical vapour deposition. The stoichiometry and oxidation of individual elements of the films were determined by x-ray photoelectron spectroscopy. The field emission gun-scanning electron microscopic images confirmed that the film deposited at 500°C show an agglomerated flower-like structure. The photoelectrocatalytic performance of as-deposited MnZnO3 was evaluated for methanol oxidation using 1Sun illumination (100 mW cm−2). The MnZnO3 photoelectrode showed a photocurrent density of 2.5 mA cm−2 in the presence of 0.6 M methanol, which is three times of that in the absence of methanol. Furthermore, the chronoamperometric results revealed that the films are highly stable and resistive towards photo-corrosion under alkaline media. Impedance studies further elucidated the addition of minute quantity of methanol accelerates the charge transfer by its rapid photoxidation. Graphical Abstract: [Figure not available: see fulltext.] © 2019, The Minerals, Metals & Materials Society.

Item Type: Article
Uncontrolled Keywords: AACVD; methanol; MnZnO3; photo-oxidation; thin film
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 19 Mar 2020 04:52
Last Modified: 19 Mar 2020 04:52
URI: http://eprints.um.edu.my/id/eprint/24050

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