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

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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.

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Authors and Affiliations

  1. Advanced Manufacturing and Materials Processing (AMMP) Centre, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia

    Muhammad Adil Mansoor & Farazila Binti Yusof

  2. Department of Chemistry, School of Natural Sciences(SNS), National University of Science and Technology (NUST), H-12, Islamabad, 46000, Pakistan

    Muhammad Adil Mansoor

  3. School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900, Sepang, Selangor Darul Ehsan, Malaysia

    Su Pei Lim & Huang Nay Ming

  4. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China

    Su Pei Lim & Huang Nay Ming

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  1. Muhammad Adil Mansoor
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  2. Su Pei Lim
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  3. Farazila Binti Yusof
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  4. Huang Nay Ming
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Mansoor, M.A., Lim, S.P., Yusof, F.B. et al. Propitious Escalation in Photocurrent Response from MnZnO3 Thin Films Using Methanol as Sacrificial Agent. J. Electron. Mater. 48, 4375–4380 (2019). https://doi.org/10.1007/s11664-019-07224-4

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  • DOI: https://doi.org/10.1007/s11664-019-07224-4

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