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Visible light photocatalytic conversion of CO2 in aqueous solution using 2D-structured carbon-based catalyst-coated β,γ-AgI nanocomposite

  • Pramila Murugesan
  • Sheeba NarayananEmail author
  • Manickam Matheswaran
Energy materials
  • 6 Downloads

Abstract

Solar-light-driven carbon-based photocatalysts have been widely used for CO2 conversion reaction. In this work, silver iodide (AgI)-decorated 2D structure graphitic carbon nitride (GCN) composite was prepared using nitrogen-rich melamine precursor and the characterization results reveal that the mixture of hexagonal wurtzite and cubic phases of β,γ-AgI are incorporated on GCN surface. Consequently, the photoconversion of CO2 over AgI/GCN composite was tested under visible light irradiation in triethanolamine medium. The main products from CO2 conversion were methane, acetone and ethanol. Besides, the effects of metal AgI loading (0.5–1.5%), the amount of photocatalyst (1–4 g/L) and irradiation time for CO2 photoconversion were evaluated. Furthermore, the charge separation mechanism associated with the AgI/GCN composite for CO2 photoconversion was also discussed.

Notes

Acknowledgements

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

Supplementary material

10853_2019_3389_MOESM1_ESM.docx (1.2 mb)
Supplementary material 1 (DOCX 1180 kb)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Chemical EngineeringNational Institute of TechnologyTiruchirappalliIndia

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