scholarly journals Ag–SnO2 nano-heterojunction–reduced graphene oxide by a stepwise photocatalyzed approach and its application in ractopamine determination

RSC Advances ◽  
2017 ◽  
Vol 7 (86) ◽  
pp. 54506-54511 ◽  
Author(s):  
Wenqiang Xie ◽  
Lele Tang ◽  
Meihui Ying ◽  
Junshao Liu ◽  
Haibo Pan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Band Structure ◽  
Reduced Graphene Oxide ◽  
Uv Irradiation ◽  
Energy Band ◽  
Reduction Process ◽  
Energy Band Structure ◽  
Reduced Graphene ◽  
Stepwise Reduction

Stepwise reduction process for SnO2–AgNPs–reduced graphene oxide under UV irradiation and its energy-band structure.

scholarly journals Magnetization of Ultraviolet-Reduced Graphene Oxide Flakes in Composites Based on Polystyrene

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2519
Author(s):  
Alexander N. Ionov ◽  
Mikhail P. Volkov ◽  
Marianna N. Nikolaeva ◽  
Ruslan Y. Smyslov ◽  
Alexander N. Bugrov
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduction Process ◽  
X Ray Diffraction ◽  
Mesoscopic Structure ◽  
Reduced Graphene ◽  
Study Results ◽  
Edge Defects ◽  
Mesoscopic Level ◽  
Ferromagnetic Hysteresis

This work presents our study results of the magnetization of multilayer UV-reduced graphene oxide (UV-rGO), polymer matrix (polystyrene), and a conjugated composite based on them. The mesoscopic structure of the composites synthesized in this work was studied by such methods as X-ray diffraction, SEM, as well as NMR-, IR- and Raman spectroscopy. The magnetization of the composites under investigation and their components was measured using a vibrating-sample magnetometer. It has been shown that the UV-reduction process leads to the formation of many submicron holes distributed inside rGO flakes, which can create edge defects, causing possibly magnetic order in the graphite samples under investigation on the mesoscopic level. This article provides an alternative explanation for the ferromagnetic hysteresis loop in UV-rGO on the base of superconductivity type-II.

Energy-Band Engineering for Tunable Memory Characteristics through Controlled Doping of Reduced Graphene Oxide

ACS Nano ◽  
2014 ◽  
Vol 8 (2) ◽  
pp. 1923-1931 ◽  
Author(s):  
Su-Ting Han ◽  
Ye Zhou ◽  
Qing Dan Yang ◽  
Li Zhou ◽  
Long-Biao Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Energy Band ◽  
Band Engineering ◽  
Reduced Graphene ◽  
Controlled Doping ◽  
Memory Characteristics

The Addition of Reduced Graphene Oxide Layer to TiO2 Photoanode of DSSC Using UV Oven Spraying Method

2020 ◽  
Vol 860 ◽  
pp. 15-21
Author(s):  
Lusi Safriani ◽  
Annisa Aprilia ◽  
Sri Suryaningsih ◽  
Fitri Yuliasari ◽  
Muhammad Rizki Nurawan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Reduction Process ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Reduced Graphene ◽  
Sensitized Solar Cells ◽  
Spraying Method

The third generation of photovoltaic, called as dye-sensitized solar cells (DSSC) have attracted much attention and currently become an interesting research topics. One important part of DSSC that determines its performance is photoanodes. Recently, graphene has been used to enhance the efficiency of DSSC through the increasing of electronic transportation. Introduction of graphene into DSSC is realized by changing the form of graphene oxide (GO) into reduced graphene oxide (rGO) through the reduction process. In this work, DSSC based on TiO2 photoanodes modified by rGO were fabricated. rGO layer was deposited on TiO2 mesoporous layer using UV-oven spraying method. We found that parameters of DSSC such as open circuit voltage, short circuit current and fill factor increase with the incorporation of rGO layer in TiO2photoanodes. DSSC with TiO2/rGO photoanodes has the highest power conversion efficiency of 11.01% which contributed from the enhancement of short circuit current. The rGO layer found to be an effective layer to block charge recombination in photoanode.

An easy and novel approach to prepare Fe3O4–reduced graphene oxide composite and its application for high-performance lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 62913-62920 ◽  
Author(s):  
Xianhong Chen ◽  
Xin Lai ◽  
Jinhui Hu ◽  
Long wan
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Solvothermal Method ◽  
Reduction Process ◽  
Lithium Ion ◽  
Novel Approach ◽  
Reduced Graphene ◽  
One Step

A ferroferric oxide–reduced graphene oxide (Fe3O4–rGO) composite is prepared by a facile one-step solvothermal method in which the reduction process of graphene oxide (GO) into rGO was accompanied by the generation of Fe3O4 particles.

scholarly journals High quality reduced graphene oxide flakes by fast kinetically controlled and clean indirect UV-induced radical reduction

Nanoscale ◽  
2016 ◽  
Vol 8 (14) ◽  
pp. 7572-7579 ◽  
Author(s):  
Roman Flyunt ◽  
Wolfgang Knolle ◽  
Axel Kahnt ◽  
Christian E. Halbig ◽  
Andriy Lotnyk ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Uv Irradiation ◽  
High Quality ◽  
Aqueous Dispersions ◽  
Highly Efficient ◽  
Kinetically Controlled ◽  
Reduced Graphene ◽  
Radical Reduction

A highly efficient and clean method for the production of reduced graphene oxide via UV irradiation of aqueous dispersions of graphene oxide (GO) containing small quantities of acetone and isopropanol is developed.

scholarly journals Corrigendum to “The effect of nanoparticle and mesoporous TiO2 additions on the electronic characteristics of reduced graphene oxide nanocomposites with zinc oxide under UV irradiation” [Mater. Sci. Eng. B 246 (2019) 89–95] (Materials Science & Engineering B (2019) 246 (89–95), (S0921510719301679), (10.1016/j.mseb.2019.06.003))

2021 ◽  
Author(s):  
S Abbaspour ◽  
A Nourbakhsh ◽  
R Ebrahimi Kahrizsangi ◽  
H Ghayour ◽  
Kenneth MacKenzie
Keyword(s):  
Zinc Oxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Uv Irradiation ◽  
Materials Science ◽  
Mesoporous Tio2 ◽  
Final Version ◽  
Reduced Graphene

© 2019 Elsevier B.V. The authors regret that due to insufficient accuracy when approving the final version, the required changes in affiliations are updated as above. The authors would like to apologise for any inconvenience caused.

Synthesis of reduced graphene oxide paper for EMI shielding by a multi-step process

2020 ◽  
Vol 13 (05) ◽  
pp. 2051024
Author(s):  
Yangyang Lin ◽  
Genliang Hou ◽  
Song Bi ◽  
Xunjia Su ◽  
Hao Li
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Functional Groups ◽  
Electromagnetic Interference ◽  
Reduction Process ◽  
Emi Shielding ◽  
Hydroiodic Acid ◽  
X Band ◽  
Reduced Graphene ◽  
Graphene Oxide Paper

A multi-step reduction process was developed to produce reduced graphene oxide (rGO) paper for electromagnetic interference (EMI) shielding. First step reduction was achieved by hydroiodic acid to remove most of the oxygen-containing functional groups, and sodium borohydride was used in the second step reduction to reduce carbonyl group which is the most difficult functional group to remove. In the last step reduction, hydroiodic acid was used as reducing agent again to remove the remaining oxygen-containing functional groups. The results show that this method can greatly improve the conductivity and EMI shielding performance of rGO paper. The resulting rGO paper with a C/O ratio of 19.38 and a thickness of 9.1[Formula: see text][Formula: see text]m exhibited high conductivity of 1084[Formula: see text]S/cm and excellent average EMI shielding efficiency of 45.84[Formula: see text]dB in the X-band, better than that reduction by other chemical methods.

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