Enhanced Solar Light Absorption and Photoelectrochemical Conversion Using TiN Nanoparticle-Incorporated C3N4-C Dot Sheets.

Title Enhanced Solar Light Absorption and Photoelectrochemical Conversion Using TiN Nanoparticle-Incorporated C3N4-C Dot Sheets.
Authors S.Laxman Shinde; S. Ishii; T.Duy Dao; R.Pasupathi Sugavaneshwar; T. Takei; K.Kar Nanda; T. Nagao
Journal ACS Appl Mater Interfaces
DOI 10.1021/acsami.7b15066
Abstract

In this work, a promising strategy to increase the broadband solar light absorption was developed by synthesizing a composite of metal-free carbon nitride-carbon dots (C3N4-C dots) and plasmonic titanium nitride (TiN) nanoparticles (NPs) to improve the photoelectrochemical water-splitting performance under simulated solar radiation. Hot-electron injection from plasmonic TiN NPs to C3N4 played a role in photocatalysis, whereas C dots acted as catalysts for the decomposition of H2O2 to O2. The use of C dots also eliminated the need for a sacrificial reagent and prevented catalytic poisoning. By incorporating the TiN NPs and C dots, a sixfold improvement in the catalytic performance of C3N4 was observed. The proposed approach of combining TiN NPs and C dots with C3N4 proved effective in overcoming low optical absorption and charge recombination losses and also widens the spectral window, leading to improved photocatalytic activity.

Citation S.Laxman Shinde; S. Ishii; T.Duy Dao; R.Pasupathi Sugavaneshwar; T. Takei; K.Kar Nanda; T. Nagao.Enhanced Solar Light Absorption and Photoelectrochemical Conversion Using TiN Nanoparticle-Incorporated C3N4-C Dot Sheets.. ACS Appl Mater Interfaces. 2018. doi:10.1021/acsami.7b15066

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