Related Experiment Video
Updated: Jul 4, 2026
09:34
Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties
Published on: November 15, 2016
9.2K
Enhanced Fenton-like process over Z-scheme MoO3 surface decorated with Fe2O3 under visible light
Hsien-Tse Hsu1, Shao-Ying Lin1, Ya-Ting Lu2
1Department of Applied Chemistry, National University of Kaohsiung, Kaohsiung, 81148, Taiwan.
Scientific Reports
|April 5, 2024
Summary
Iron oxide-molybdenum oxide (Fe2O3/MoO3) Z-scheme photocatalysts efficiently degrade methylene blue in wastewater. Enhanced electron-hole separation and a Fenton-like process boost degradation rates, showing promise for water purification.
Area of Science:
- Materials Science
- Environmental Chemistry
- Nanotechnology
Background:
- Z-scheme heterojunction photocatalysts are vital for wastewater treatment, offering high reactivity and visible-light efficiency.
- Iron oxide (Fe2O3) and molybdenum oxide (MoO3) based materials are explored for their photocatalytic potential.
Purpose of the Study:
- To synthesize and evaluate Fe2O3-decorated MoO3 rods as Z-scheme photocatalysts for methylene blue (MB) degradation.
- To investigate the structural, morphological, and optical properties influencing the photocatalytic performance.
- To elucidate the underlying photocatalytic mechanism, including electron-hole separation and radical formation.
Main Methods:
- Two-step synthesis of Fe2O3/MoO3 rod composites.
- Characterization using XRD, SEM, micro-Raman, XPS, UV-Vis DRS, and PL.
- Photodegradation experiments of methylene blue under visible light irradiation.
- Evaluation of photocatalytic efficiency with and without H2O2 addition.
- Reusability tests to assess long-term stability.
Main Results:
- Fe2O3/MoO3 rods exhibited enhanced photodegradation efficiency of MB, increasing from 31.7% to 91.5% within 180 minutes.
- Characterization confirmed the formation of a 1D hexagonal prism structure with reduced band gap energy.
- Improved degradation is attributed to efficient electron-hole separation and a Fenton-like process involving OH radical generation.
- The Z-scheme mechanism was confirmed, and efficiency was further boosted by H2O2 addition.
- The composite material demonstrated high stability and photocatalytic activity after five reuse cycles.
Conclusions:
- Fe2O3/MoO3 Z-scheme photocatalysts are effective for methylene blue degradation in wastewater.
- The enhanced performance is linked to structural integrity, reduced band gap, and synergistic effects in the Z-scheme mechanism.
- The material's reusability and improved efficiency with H2O2 suggest significant potential for practical environmental applications.
