24October2017

Nano-Micro Letters

Solar-driven Hydrogen Peroxide Production using Polymer-supported Carbon Dots as Heterogeneous Catalyst

Satyabrat Gogoi1, Niranjan Karak1,*

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Nano-Micro Lett. (2017) 9: 40

First Online: 09 February 2017 (Article)

DOI:10.1007/s40820-017-0143-7

*Corresponding author. E-mail: nkarak@tezu.ernet.in

 

Abstract

 


Fig. 3 Solar-driven H2O2 production using CD-impregnated waterborne hyperbranched polyurethane as heterogeneous catalyst.

Safe, sustainable, and green production of hydrogen peroxide is an exciting proposition due to the role of hydrogen peroxide as a green oxidant and energy carrier for fuel cells. The current work reports the development of carbon dot-impregnated waterborne hyperbranched polyurethane as a heterogeneous photo-catalyst for solar-driven production of hydrogen peroxide. The results reveal that the carbon dots possess a suitable band gap of 2.98 eV, which facilitates effective splitting of both water and ethanol under solar irradiation. Inclusion of the carbon dots within the eco-friendly polymeric material ensures their catalytic activity, and also provides a facile route for easy catalyst separation, especially from a solublizing medium. The overall process was performed in accordance with the principles of green chemistry using bio-based precursors and aqueous medium. This work highlights the potential of carbon dots as an effective photo-catalyst.


 

Keywords

Carbon dot; Photo-catalyst; Heterogeneous catalyst; Hydrogen peroxide