Nanomeghyas

Nanomeghyas

Fabrication and characterization of a-CuSnO₃-based photoanode for water splitting in a photoelectrochemical cell

Document Type : Original Article

Authors
Atefeh Rahimi 1
Iraj Kazeminezhad 2
1 Physics Department, Shahid Chamran University of Ahvaz
2 Physics department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
10.22034/ns.2025.2074640.1410
Abstract
Abstract: In this study, amorphous copper stannate (a-CuSnO₃) was synthesized via a co-precipitation method followed by annealing, and its photoelectrochemical performance for water splitting under visible light irradiation was investigated. The structure, morphology, and optical properties of the samples were characterized using XRD, FE-SEM, UV–vis, LSV, and light stability analyses. The results revealed that the a-CuSnO₃ sample exhibited a spherical morphology, and its direct band gap was determined to be approximately 2.34 eV. Photoelectrochemical measurements in a three-electrode cell indicated that the a-CuSnO₃ photoanode deposited on an FTO substrate generated a photocurrent density of 0.17 mA/cm², which was significantly higher than that of the ITO-based counterpart. Moreover, the electrode retained its stability after 180 minutes of continuous illumination. These results demonstrate that the synthesized a-CuSnO₃ can serve as an efficient and stable photoanode for photoelectrochemical cells aimed at sustainable hydrogen production.
Keywords
Amorphous copper stannate (a-CuSnO₃)
Photoanode
Photoelectrochemical cell
Water splitting
Green hydrogen production
Subjects

  • Receive Date 15 October 2025
  • Revise Date 20 November 2025
  • Accept Date 14 December 2025