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CVD grown nitrogen doped graphene is an exceptional visible-light driven photocatalyst for surface catalytic reactions

Pawan Kumar
2019 Figshare  

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The photocatalytic potential of large area CVD grown nitrogen doped graphene (NGr) has been explored though the chemical transformation of 4-nitrobenzene thiol into p,p'-dimercaptoazobenzene. Decoration of NGr with Ag nanocubes with rounded edges to form NGr/Ag nanohybrids resulted in a slight increase in the work-function and a decrease in the n-type character of NGr due to ground state transfer of negative charge from NGr to Ag. The Ag nanocubes exhibited a localized surface plasmon resonance
more » ... (LSPR) at ~425 nm. When the NGr/Ag nanohybrids were illuminated with visible light of wavelength close to the LSPR peak, Kelvin probe force microscopy (KPFM) indicated a dramatic change in surface potential of −225 mV and Raman spectra detected electron accumulation in NGr, which are attributed to a high local field enhancement-mediated hot electron injection into NGr and the formation of long-lived charge separated states.
doi:10.6084/m9.figshare.11097119.v1 fatcat:drfgz62ncbeiffh4kcl7d5hgfi
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Pawan Kumar. "CVD grown nitrogen doped graphene is an exceptional visible-light driven photocatalyst for surface catalytic reactions." Figshare (2019)