Journal
REACTION CHEMISTRY & ENGINEERING
Volume 6, Issue 11, Pages 2029-2041Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1re00250c
Keywords
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Funding
- Department of Science and Technology (DST), India, through the INSPIRE Faculty Award [IFA-13 ENG-57]
- IIT Kanpur
- Department of Science and Technology (DST), India [DST/TM/WTI/2K16/23(G)]
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The development of a visible light photocatalytic Fe2O3@BC/ACF heterojunction on activated carbon fiber support shows promising applications for wastewater treatment, particularly in degrading emerging pharmaceutical pollutants. The high photocatalytic activity is attributed to the interfacial tuning of the heterojunction and overall charge carrier separation on the bismuth carbonate surface with different loading of Fe2O3 nanoparticles.
The development of broadband light-harvesting heterojunctions through interface tuning over flexible support has practical wastewater treatment applications. Immobilization of the heterojunction over flexible support such as activated carbon fiber (ACF) can prevent their elution in streamflow and make it versatile for its use in a reactor system. In this work, we report the development of a heterojunction by depositing iron(iii) oxide nanoparticles over bismuth carbonate sheets supported over activated carbon fiber (Fe2O3@BC/ACF). The developed photocatalyst exhibits visible light photocatalytic activity towards the degradation of emerging pharmaceutical pollutants (antipyrine) under reactor operation. The higher photocatalytic activity (Fe2O3@BC/ACF1) has been explained in terms of interfacial tuning of the heterojunction and overall charge carrier separation upon different loading of Fe2O3 nanoparticles on the BC surface. The key role of active radical species was studied during photocatalytic degradation of antipyrine. Intact crystallinity and no leaching of photocatalyst (Fe2O3@BC/ACF1) confirm the applicability of materials for future wastewater treatment applications.
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