Effect of reducing agents in tuning the third-order optical nonlinearity and optical limiting behavior of reduced graphene oxide

2017 ◽  
Vol 488-489 ◽  
pp. 55-61 ◽  
Author(s):  
G. Muruganandi ◽  
M. Saravanan ◽  
G. Vinitha ◽  
M.B. Jessie Raj ◽  
T.C. Sabari Girisun
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Optical Limiting ◽  
Optical Nonlinearity ◽  
Reducing Agents ◽  
Third Order ◽  
Limiting Behavior ◽  
The Third ◽  
Reduced Graphene

scholarly journals A Facile Method to Synthesize CdSe-Reduced Graphene Oxide Composite with Good Dispersion and High Nonlinear Optical Properties

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 957 ◽  
Author(s):  
Pengchao Li ◽  
Baohua Zhu ◽  
Peng Li ◽  
Zhihao Zhang ◽  
Luyao Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Optical Properties ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Nonlinear Optical ◽  
Cdse Nanoparticles ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
The Third ◽  
Reduced Graphene

CdSe-reduced graphene oxide (CdSe/RGO) composites were synthesized by a hydrothermal method. CdSe/RGO composites with different mass ratios were prepared. The structure and morphology of CdSe/RGO composites were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The synthesis of CdSe/RGO complexes was successfully demonstrated by Fourier infrared (FT-IR) and Raman spectra. CdSe nanoparticles in the CdSe/RGO composite were uniformly dispersed on the graphene surface. The study found that oxygen-containing functional groups such as hydroxyl (-OH) and carboxyl (-COOH) groups in graphene played a decisive role in the dispersion of CdSe. The third-order nonlinear optical properties of CdSe/RGO composites were measured by a single beam Z-scan technique. The experimental results showed that composites exhibited two-photon absorption and self-focusing nonlinear refraction properties. Additionally, the third-order nonlinear susceptibility of the composite material was obviously enhanced, which was mainly due to the good dispersion of CdSe nanoparticles on graphene.

Improved third-order optical nonlinearity and optical limiting behaviour of (nanospindle and nanosphere) zinc ferrite decorated reduced graphene oxide under continuous and ultrafast laser excitation

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91083-91092 ◽  
Author(s):  
M. Saravanan ◽  
T. C. Sabari Girisun ◽  
G. Vinitha ◽  
S. Venugopal Rao
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Zinc Ferrite ◽  
Laser Excitation ◽  
Hydrothermal Reaction ◽  
Optical Nonlinearity ◽  
Ultrafast Laser ◽  
Third Order ◽  
Reduced Graphene ◽  
Limiting Behaviour

Nanohybrids consisting of uniform nanospheres and nanospindles of zinc ferrite attached to reduced graphene oxide were prepared by hydrothermal reaction.

Effect of reduction time on third order optical nonlinearity of reduced graphene oxide

2017 ◽  
Vol 66 ◽  
pp. 460-468 ◽  
Author(s):  
V.G. Sreeja ◽  
G. Vinitha ◽  
R. Reshmi ◽  
E.I. Anila ◽  
M.K. Jayaraj
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Optical Nonlinearity ◽  
Third Order ◽  
Reduction Time ◽  
Reduced Graphene

Continuous flow photolytic reduction of graphene oxide

2019 ◽  
Vol 55 (76) ◽  
pp. 11438-11441 ◽  
Author(s):  
Thaar M. D. Alharbi ◽  
Amira R. M. Alghamdi ◽  
Kasturi Vimalanathan ◽  
Colin L. Raston
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Continuous Flow ◽  
Reducing Agents ◽  
Reduced Graphene ◽  
Fluidic Device

Reduced graphene oxide (rGO) is generated from GO dispersed in water under continuous flow in the absence of harsh reducing agents, in a vortex fluidic device, such that the processing is scalable with uniformity of the product.

scholarly journals Facile hydrothermal synthesis and optical limiting properties of TiO 2 -reduced graphene oxide nanocomposites

Carbon ◽  
2015 ◽  
Vol 89 ◽  
pp. 130-141 ◽  
Author(s):  
Aijian Wang ◽  
Wang Yu ◽  
Yu Fang ◽  
Yinglin Song ◽  
Ding Jia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Reduced Graphene Oxide ◽  
Optical Limiting ◽  
Reduced Graphene

scholarly journals Effects of Different TiO2 Particle Sizes on the Microstructure and Optical Limiting Properties of TiO2/Reduced Graphene Oxide Nanocomposites

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 730 ◽  
Author(s):  
Yuyu Ren ◽  
Lili Zhao ◽  
Yang Zou ◽  
Lixin Song ◽  
Ningning Dong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Photoelectron Spectroscopy ◽  
Optical Limiting ◽  
Tio2 Particle ◽  
Tetrabutyl Titanate ◽  
Particle Sizes ◽  
X Ray ◽  
Reduced Graphene ◽  
Source Materials

TiO2/reduced graphene oxide (rGO) nanocomposites with two different TiO2 particle sizes were synthesized by a facile hydrothermal method using two different source materials of Ti: tetrabutyl titanate (TBT) and commercial TiO2 powder (P25). For respective series with the same source materials, we investigated additions that optimized the nonlinear optical properties (NLO) and optical limiting (OL) performances, and we explored the relationships between structural diversity and performance. Several characterization techniques, including X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, and diffuse reflectance ultraviolet-visible spectroscopy (UV-Vis) were conducted to confirm the microstructures and chemical states of as-prepared materials. This indicated the existence of the Ti–O–C bond between rGO sheets and TiO2 particles and the reduction from precursor graphene oxide (GO) to rGO. The results of UV-Vis spectra revealed that the TiO2/rGO nanocomposites showed smaller band gaps than bare TiO2. A nanosecond open-aperture Z-scan technique at 1064 nm was applied to investigate NLO and OL properties. TiO2/rGO nanocomposites exhibited enhanced NLO and OL performances, arising from synergistic effects, compared to individual components. The TBT series samples performed better than the P25 series, presumably relevant to dimensional effects.

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