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

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

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.

Suggested Citation

  • Kodan, Nisha & Kumar, Rajesh & Bai, Rekha & Mehta, B.R., 2024. "Boron-doped TiO2 nanoparticles for improved photoelectrochemical response via enhanced surface area and visible light absorption," Renewable Energy, Elsevier, vol. 237(PC).
    • Handle: RePEc:eee:renene:v:237:y:2024:i:pc:s0960148124018020
    DOI: 10.1016/j.renene.2024.121734
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