Synthesis of Ag-reduced graphene oxide nanocomposite by gamma radiation assisted method and its photocatalytic activity

K. Hareesh; R. P. Joshi; S. S. Dahiwale; V. N. Bhoraskar; S. D. Dhole

doi:10.1016/j.vacuum.2015.11.011

Synthesis of Ag-reduced graphene oxide nanocomposite by gamma radiation assisted method and its photocatalytic activity

K. Hareesh
, R. P. Joshi
, S. S. Dahiwale
, V. N. Bhoraskar
, S. D. Dhole^*

^*Corresponding author for this work

Department of Physics, Manipal Institute of Technology, Bengaluru

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

Silver-reduced graphene oxide (Ag-rGO) nanocomposite was prepared in the presence of Isopropyl alcohol (IPA) and polyvinyl pyrrolidone (PVP) by gamma irradiation assisted method. UV-Visible spectroscopic results showed the peak of rGO and surface plasmon resonance of Ag nanoparticles. X-ray powder Diffraction (XRD) results revealed the formation of face centered cubic structured Ag nanoparticles along with rGO signature after irradiation. Transmission electron microscopy (TEM) results showed the decoration of Ag nanoparticles of size 10 nm on rGO sheet corroborating the UV-Visible spectroscopic and XRD results. Raman spectroscopic results of Ag-rGO showed the increase in the ratio of D to G band (I_D/I_G) after gamma irradiation. The prepared Ag-rGO nanocomposite was tested for the degradation of methylene blue (MB) and results distinctly enhanced photocatalytic degradation compared to bare Ag nanoparticles and graphene oxide. The prepared Ag-rGO nanocomposites act as photo-catalysts that utilize visible light as an energy source.

Original language	English
Pages (from-to)	40-45
Number of pages	6
Journal	Vacuum
Volume	124
DOIs	https://doi.org/10.1016/j.vacuum.2015.11.011
Publication status	Published - 02-2016

All Science Journal Classification (ASJC) codes

Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films

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10.1016/j.vacuum.2015.11.011

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@article{81cff3c2a4be47b8a49d2ee50880851b,

title = "Synthesis of Ag-reduced graphene oxide nanocomposite by gamma radiation assisted method and its photocatalytic activity",

abstract = "Silver-reduced graphene oxide (Ag-rGO) nanocomposite was prepared in the presence of Isopropyl alcohol (IPA) and polyvinyl pyrrolidone (PVP) by gamma irradiation assisted method. UV-Visible spectroscopic results showed the peak of rGO and surface plasmon resonance of Ag nanoparticles. X-ray powder Diffraction (XRD) results revealed the formation of face centered cubic structured Ag nanoparticles along with rGO signature after irradiation. Transmission electron microscopy (TEM) results showed the decoration of Ag nanoparticles of size 10 nm on rGO sheet corroborating the UV-Visible spectroscopic and XRD results. Raman spectroscopic results of Ag-rGO showed the increase in the ratio of D to G band (ID/IG) after gamma irradiation. The prepared Ag-rGO nanocomposite was tested for the degradation of methylene blue (MB) and results distinctly enhanced photocatalytic degradation compared to bare Ag nanoparticles and graphene oxide. The prepared Ag-rGO nanocomposites act as photo-catalysts that utilize visible light as an energy source.",

author = "K. Hareesh and Joshi, \{R. P.\} and Dahiwale, \{S. S.\} and Bhoraskar, \{V. N.\} and Dhole, \{S. D.\}",

note = "Funding Information: One of the authors (KH), would like to thank University Grant Commission, Govt of India for awarding Dr D S Kothari Post Doctoral Fellowship. Authors are thankful to Dr. S. V. Bhoraskar and Mr. B. Shateesh for discussion during the course of this work. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2016",

month = feb,

doi = "10.1016/j.vacuum.2015.11.011",

language = "English",

volume = "124",

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AU - Hareesh, K.

AU - Joshi, R. P.

AU - Dahiwale, S. S.

AU - Bhoraskar, V. N.

AU - Dhole, S. D.

N1 - Funding Information: One of the authors (KH), would like to thank University Grant Commission, Govt of India for awarding Dr D S Kothari Post Doctoral Fellowship. Authors are thankful to Dr. S. V. Bhoraskar and Mr. B. Shateesh for discussion during the course of this work. Publisher Copyright: © 2015 Elsevier Ltd.

PY - 2016/2

Y1 - 2016/2

N2 - Silver-reduced graphene oxide (Ag-rGO) nanocomposite was prepared in the presence of Isopropyl alcohol (IPA) and polyvinyl pyrrolidone (PVP) by gamma irradiation assisted method. UV-Visible spectroscopic results showed the peak of rGO and surface plasmon resonance of Ag nanoparticles. X-ray powder Diffraction (XRD) results revealed the formation of face centered cubic structured Ag nanoparticles along with rGO signature after irradiation. Transmission electron microscopy (TEM) results showed the decoration of Ag nanoparticles of size 10 nm on rGO sheet corroborating the UV-Visible spectroscopic and XRD results. Raman spectroscopic results of Ag-rGO showed the increase in the ratio of D to G band (ID/IG) after gamma irradiation. The prepared Ag-rGO nanocomposite was tested for the degradation of methylene blue (MB) and results distinctly enhanced photocatalytic degradation compared to bare Ag nanoparticles and graphene oxide. The prepared Ag-rGO nanocomposites act as photo-catalysts that utilize visible light as an energy source.

AB - Silver-reduced graphene oxide (Ag-rGO) nanocomposite was prepared in the presence of Isopropyl alcohol (IPA) and polyvinyl pyrrolidone (PVP) by gamma irradiation assisted method. UV-Visible spectroscopic results showed the peak of rGO and surface plasmon resonance of Ag nanoparticles. X-ray powder Diffraction (XRD) results revealed the formation of face centered cubic structured Ag nanoparticles along with rGO signature after irradiation. Transmission electron microscopy (TEM) results showed the decoration of Ag nanoparticles of size 10 nm on rGO sheet corroborating the UV-Visible spectroscopic and XRD results. Raman spectroscopic results of Ag-rGO showed the increase in the ratio of D to G band (ID/IG) after gamma irradiation. The prepared Ag-rGO nanocomposite was tested for the degradation of methylene blue (MB) and results distinctly enhanced photocatalytic degradation compared to bare Ag nanoparticles and graphene oxide. The prepared Ag-rGO nanocomposites act as photo-catalysts that utilize visible light as an energy source.

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JO - Vacuum

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Synthesis of Ag-reduced graphene oxide nanocomposite by gamma radiation assisted method and its photocatalytic activity

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