High-Efficacy Hierarchical Dy2O3/TiO2 Nanoflower toward Wastewater Reclamation: A Combined Photoelectrochemical and Photocatalytic Strategy

Mahmoud M. Kaid, Abdelrahman S. Khder, Saleh A. Ahmed, Amr A. Ibrahim, Hatem M. Altass, Reem I. Alsantali, Rabab S. Jassas, Menna A. Khder, Munirah M. Al-Rooqi, Ziad Moussa, Awad I. Ahmed

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Developing a sustainable photocatalyst is crucial to mitigate the foreseeable energy shortage and environmental pollution caused by the rapid advancement of global industry. We developed Dy2O3/TiO2 nanoflower (TNF) with a hierarchical nanoflower structure and a near-ideal anatase crystallite morphology to degrade aqueous rhodamine B solution under simulated solar light irradiation. The prepared photocatalyst was well-characterized using powder X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, energy-dispersive spectroscopy, scanning electron microscopy, Brunauer-Emmett-Teller, diffuse reflectance UV-vis spectra, and X-ray photoelectron spectroscopy. Further analysis was performed to highlight the photoelectrochemical activity of the prepared photocatalysts such as electrochemical impedance spectroscopy, linear sweep voltammetry, photocurrent response, and a Mott−Schottky study. The crystalline Dy2O3/TNF exhibits superb photocatalytic activity attributed to the improved charge transfer, reduced recombination rate of the electron−hole pairs, and a remarkable red-shift in light absorption.

Original languageEnglish
Pages (from-to)17223-17233
Number of pages11
JournalACS Omega
Volume7
Issue number20
DOIs
Publication statusPublished - May 24 2022

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering

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