Boron-doped TiO2 nanoparticles for improved photoelectrochemical response via enhanced surface area and visible light absorption

Nisha Kodan, Rajesh Kumar, Rekha Bai and B.R. Mehta

Renewable Energy, 2024, vol. 237, issue PC

Abstract: The present study introduces boron doping into TiO2 nanoparticles to synthesize boron-doped TiO2 samples. The structural and morphological properties of the pristine and doped samples are investigated using X-ray diffraction, Raman spectroscopy, Field Emission Scanning Electron Microscopy (FESEM) and High Resolution Transmission Electron Microscopy (HRTEM) techniques. Photoelectrochemical measurements have confirmed that a 3 wt % concentration of boron doped TiO2 nanoparticles shows improved photoelectrochemical response compared to pristine TiO2 nanoparticles. An ∼285-fold improvement (∼0.97 mA/cm2 at 0.81 V vs RHE) is observed in 3 wt % boron doped TiO2 nanoparticles array as compared to the pristine (3.4 μA/cm2 at 0.81 V vs RHE) photoanode samples. Moreover, the enhanced surface area, suppressed recombination, effective charge separation/transport of photogenerated charge carriers, and improved visible light absorption due to boron doping result in a remarkably high current density.

Keywords: TiO2 nanoparticles; Boron doping; Photoelectrochemical cell; Chemical deposition; Mott-Schottky measurements (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:237:y:2024:i:pc:s0960148124018020

DOI: 10.1016/j.renene.2024.121734

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