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Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
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C, F co-doping Ag/TiO2 with visible light photocatalytic performance toward degrading Rhodamine B.

Zhengyang Chen1, Shui Yu1, Jianping Liu1

  • 1School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.

Environmental Research
|June 8, 2023
PubMed
Summary
This summary is machine-generated.

This study developed a novel carbon/fluorine co-doped titanium dioxide (TiO2) photocatalyst with silver nanoparticles (Ag) for efficient visible light degradation of organic pollutants. The C/F-Ag-TiO2 composite shows significantly enhanced photocatalytic activity for environmental remediation.

Keywords:
Co-dopingPhotocatalysisRhodamine BSilver depositionTitanium dioxideVisible light

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Area of Science:

  • Materials Science
  • Environmental Chemistry
  • Nanotechnology

Background:

  • Organic pollutants in industrial wastewater pose significant risks to human health.
  • Photocatalytic degradation is an effective technology for removing these pollutants.
  • Titanium dioxide (TiO2) photocatalysts are limited by their UV light absorption.

Purpose of the Study:

  • To develop a novel Ag-coated, micro-wrinkled TiO2-based photocatalyst.
  • To enhance visible light absorption and photocatalytic activity for pollutant degradation.
  • To synthesize a carbon/fluorine co-doped TiO2 photocatalyst with surface silver deposition (C/F-Ag-TiO2).

Main Methods:

  • One-step solvothermal synthesis of a fluorinated TiO2 precursor.
  • High-temperature calcination in a nitrogen atmosphere to introduce carbon doping.
  • Hydrothermal method for surface silver deposition to create the C/F-Ag-TiO2 photocatalyst.

Main Results:

  • Successful synthesis of Ag-coated, micro-wrinkled TiO2 with C/F co-doping.
  • Reduced band gap energy of C/F-Ag-TiO2 (2.56 eV) compared to anatase TiO2 (3.2 eV).
  • Achieved an 84.2% degradation rate of Rhodamine B in 4 hours, with a rate constant 17 times higher than P25 under visible light.

Conclusions:

  • The C/F-Ag-TiO2 composite exhibits significantly enhanced visible light photocatalytic activity.
  • The synergistic effects of C/F doping and Ag nanoparticles contribute to improved performance.
  • This photocatalyst is a promising candidate for efficient environmental remediation of organic pollutants.