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Ultra-bright emission from Sr doped TiO2 nanoparticles through r-GO conjugation.


ABSTRACT: Graphene and semiconductor nanocomposite garnered much interest in nanoscience and nanotechnology. In this research, TiO2, TiO2: Sr and TiO2: Sr/r-GO (reduced graphene oxide) nanocomposites have been successfully synthesized via a wet chemical synthesis method. The microscopic studies confirmed the formation of graphene sheets which looked like a paper which could easily wrap over the bacterial surface killing them. The optical band gap of these nanocomposites is determined by UV-visible absorption spectra which inferred that optical band gap decreases with Sr2+ incorporation and r-GO attachment. Furthermore, photoluminescence (PL) study revealed that the intensity of emission is prominent for TiO2: Sr/r-GO. The enhancement in PL intensity with r-GO is due to creation of more oxygen vacancies and defects which generally capture the photoinduced carriers inhibiting recombination rate of free carriers promoting the photocatalytic reactions.

SUBMITTER: Mandal S 

PROVIDER: S-EPMC6458360 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Ultra-bright emission from Sr doped TiO<sub>2</sub> nanoparticles through r-GO conjugation.

Mandal Sanhita S   Jain Neha N   Pandey Mukesh Kumar MK   Sreejakumari S S SS   Shukla Prashant P   Chanda Anupama A   Som Sudipta S   Das Subrata S   Singh Jai J   Singh Jai J  

Royal Society open science 20190327 3


Graphene and semiconductor nanocomposite garnered much interest in nanoscience and nanotechnology. In this research, TiO<sub>2</sub>, TiO<sub>2</sub>: Sr and TiO<sub>2</sub>: Sr/r-GO (reduced graphene oxide) nanocomposites have been successfully synthesized via a wet chemical synthesis method. The microscopic studies confirmed the formation of graphene sheets which looked like a paper which could easily wrap over the bacterial surface killing them. The optical band gap of these nanocomposites is  ...[more]

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