The photoelectrochemically enhanced oxygen evolution reaction via thin films of novel (1:2:1) SnO-Mn2O3-TiO2 hybrid nanotubes

Document Type

Article

Publication Date

3-1-2024

Abstract

The oxygen and hydrogen evolution reactions play a significant role in overall water splitting. The photoelectrochemical water splitting offers a high potential for conversion efficiency at low voltage and temperature. Therefore, in the present work comparative studies of novel (1:2:1)) SnO-Mn2O3-TiO2 (SMT) ternary and SnOMn2O3 (SM), SnO-TiO2 (ST) and Mn2O3-TiO2 (MT) binary mixed-metal oxides thin films for hydrogen generation are performed. method. The Aerosol Assisted Chemical Vapor Deposition (AACVD) fabricated thin films were analyzed through X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron microscopy (XPS) and UV-visible spectroscopy to determine the crystallinity, surface morphology, binding energy, and band gaps. The Photoelectrochemical studies demonstrate that the SnO-Mn2O3-TiO2 (SMT) thin film yields 1.96, 2.37, and 2.7 times maximum current density than the binary SnO-Mn2O3 (SM), SnO-TiO2 (ST) and Mn2O3-TiO2 (MT) metal oxides, respectively. These results illustrate that due to unique topography, uniform distribution, and good optoelectronic properties of ternary SnO-Mn2O3-TiO2 (SMT) nanotubular layers show better light-harvesting performance as compared to the binary (SM, ST, and MT) metal oxides. Therefore, it is believed that SMT is a promising candidate for energy harvesting applications.

Keywords

Mixed metal oxides, Optical band gap, Linear sweep voltammetry, Synergistic effect, Oxygen evolution reaction (OER)

Publication Title

Surfaces and Interfaces

Divisions

umpedac

Funders

HEC (Pakistan), NRPU (17618/ NRPU/RGM/RD/HEC/2021)

Volume

46

Publisher

Elsevier

Publisher Location

RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS

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