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Fabrication of visible-light responsive CQDs/Cu2O nanocomposite for CO2 photoreduction


Kulandaivalu, Tharani and Abdul Rashid, Suraya and Sabli, Nordin and Tan, Tong Ling (2018) Fabrication of visible-light responsive CQDs/Cu2O nanocomposite for CO2 photoreduction. In: 2nd International Symposium on Advanced Materials and Nanotechnology (i-SAMN 2018), 15-16 Aug. 2018, The Everly Putrajaya, Malaysia. (pp. 92-93).


Semiconductor-carbonaceous integrated materials are gaining a vast demand in photocatalytic reactions for their facscinatng combined features to attain promising photocatalytic results. In this work, bluefluorescent carbon quantum dots (CQDs) were synthesized via a facile top-down hydrothermal method using EFB biochar of oil palms as the carbon source. The CQDs were incorporated together with copper (I) oxide (Cu2O) via a simple wet impregnation method to form CQDs/Cu2O nanocomposite. High resolution transmission electron microscopy (HRTEM) confirmed the successful deposition of CQDs onto the surface of Cu2O nanoparticles. The CQDs/Cu2O nanocomposite showed a considerable improvement in the CO2 photoreduction with an enhancement of 54% compared to the pure Cu2O, due to the retardation of the recombination of charge carriers.

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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Engineering
Institute of Advanced Technology
Keywords: Carbon quantum dots; Copper (I) oxide; Photocatalyst; CO2 photoreduction
Depositing User: Nabilah Mustapa
Date Deposited: 08 Oct 2018 02:43
Last Modified: 08 Oct 2018 02:43
URI: http://psasir.upm.edu.my/id/eprint/65473
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