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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/045/0194

    • Keywords

       

      Hematite; methanol; photoanode; photoelectrochemical; aerosol-assisted chemical vapour deposition.

    • Abstract

       

      Although ${\alpha}$-Fe$_2$O$_3$ has been investigated extensively in photoelectrochemical (PEC) systems, however, producing efficient and practical photoelectrodes remains a challenge. Here, we demonstrate the ${\alpha}$-Fe$_2$O$_3$ photoanodes fabricated by employing two different organic solvents (ethanol and methanol) via aerosol-assisted chemical vapour deposition. The idea is to show that using different solvents could influence the overall performance of the fabricated photoanode. It is observed that the solvent with higher polarity enhanced the crystal growth direction of ${\alpha}$-Fe$_2$O$_3$ on the (110) orientation of the rhombohedral structure and the solution with lower polarity resulted in superior grain growth. The light absorption improved with the energy bandgap reduced significantly due to the enhancement of morphological formation. The PEC performance exhibited good photoanodic responses with photocurrent density increased graduallyfrom 29 to 75 ${\mu}$A cm$^{–2}$ at 1.23 V (vs. RHE), resulting in good charge transfer behaviour and stability. This provides valuable information on the possible strategy in producing efficient optoelectronic devices.

    • Author Affiliations

       

      AMIN AADENAN1 2 NURUL AFFIQAH ARZAEE1 MOHAMAD FIRDAUS MOHAMAD NOH1 INZAMAM NAWAS NAWAS MUMTHAS1 MOHD NORIZAM MD DAUD1 NURUL AIDA MOHAMED1 MOHD ASRI MAT TERIDI1

      1. Solar Energy Research Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia
      2. Faculty of Applied Sciences, Universiti Teknologi MARA Negeri Sembilan, 72000 Kuala Pilah, Malaysia

    • Dates

       
      Published
      5 October 2022
      Manuscript received
      19 April 2022
      Accepted
      8 June 2022
      Final version published online
      5 October 2022

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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