In situ formation of reduced graphene oxide structures in ceria by combined sol–gel and solvothermal processing

Raman and IR investigations indicated the presence of reduced graphene oxide (rGO)-like residues on ceria nanoparticles after solvothermal treatment in ethanol. The appearance of such structures is closely related to cerium tert-butoxide as precursor and ethanol as solvothermal solvent. The rGO-like residues improve the catalytic CO oxidation activity. This was also confirmed by introduction of “external” graphene oxide during sol–gel processing, by which the rGO structures and the catalytic activity were enhanced.

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High dielectric polymer composites from thermal-induced in-situ formation of conjugated structures and reduced graphene oxide

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2021.124276 ◽

2021 ◽

Vol 262 ◽

pp. 124276

Author(s):

Zewei Zhu ◽

Yingbo Liu ◽

Junqi Ge ◽

Zhaoyu Hu ◽

Gaorong Zeng ◽

...

Keyword(s):

Graphene Oxide ◽

Polymer Composites ◽

Reduced Graphene Oxide ◽

Reduced Graphene ◽

In Situ Formation ◽

High Dielectric ◽

Dielectric Polymer

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In situ construction of reduced graphene oxide supported Ag nanoneedles heterogenous nanostructures with superior catalytic activity for 4-nitrophenol

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/j.colsurfa.2020.124929 ◽

2020 ◽

Vol 600 ◽

pp. 124929

Author(s):

Xing-Wei Han ◽

Huiying Pan ◽

Minghao liu

Keyword(s):

Graphene Oxide ◽

Catalytic Activity ◽

Reduced Graphene Oxide ◽

Reduced Graphene

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In situ formation of Ni(OH)2 nanoparticle on nitrogen-doped reduced graphene oxide nanosheet for high-performance supercapacitor electrode material

Applied Surface Science ◽

10.1016/j.apsusc.2014.08.127 ◽

2014 ◽

Vol 317 ◽

pp. 370-377 ◽

Cited By ~ 26

Author(s):

Huidi Liu ◽

Jinglin Zhang ◽

Dongdong Xu ◽

Bin Zhang ◽

Lei Shi ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Electrode Material ◽

High Performance ◽

Supercapacitor Electrode ◽

Nitrogen Doped ◽

Reduced Graphene ◽

Graphene Oxide Nanosheet ◽

In Situ Formation

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Development of a novel nitrite electrochemical sensor by stepwise in situ formation of palladium and reduced graphene oxide nanocomposites

RSC Advances ◽

10.1039/c5ra02661j ◽

2015 ◽

Vol 5 (50) ◽

pp. 40111-40116 ◽

Cited By ~ 71

Author(s):

Li Fu ◽

Shuhong Yu ◽

Lachlan Thompson ◽

Aimin Yu

Keyword(s):

Graphene Oxide ◽

Electrochemical Sensor ◽

Reduced Graphene Oxide ◽

Pd Nanoparticles ◽

Reduced Graphene ◽

In Situ Formation ◽

Stepwise Formation

Sensitive electrochemical nitrite sensors based on in situ stepwise formation of Pd nanoparticles and reduced graphene oxide on electrodes.

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In situ Synthesis of Reduced Graphene Oxide Supported CoMo Nanoparticles as Efficient Catalysts for Hydrogen Generation from NH3BH3

Zeitschrift für Physikalische Chemie ◽

10.1515/zpch-2017-0993 ◽

2018 ◽

Vol 232 (3) ◽

pp. 431-443 ◽

Cited By ~ 10

Author(s):

Xigang Du ◽

Yonghua Duan ◽

Jun Zhang ◽

Gang Mi

Keyword(s):

Aqueous Solution ◽

Graphene Oxide ◽

Catalytic Activity ◽

Reduced Graphene Oxide ◽

Hydrogen Generation ◽

Sodium Molybdate ◽

High Catalytic Activity ◽

Ambient Conditions ◽

Reduced Graphene

AbstractCoMo nanoparticles (NPs) supported on reduced graphene oxide (RGO) were synthesized by a one-stepin situco-reduction of an aqueous solution of cobalt(II) chloride, sodium molybdate dihydrate and graphene oxide (GO) using NaBH4as the sole reductant under ambient conditions. The powder XRD, FTIR, EDS and TEM were employed to characterize the structure, size and composition of the CoMo/RGO catalysts. The as-synthesized Co0.9Mo0.1/RGO catalysts exhibited high catalytic activity for the hydrolytic dehydrogenation of ammonia borane (AB) at room temperature. The as-synthesized Co0.9Mo0.1/RGO nanocatalysts exhibited much higher catalytic activity than Co/RGO, Mo/RGO and the RGO-free Co0.9Mo0.1counterpart. Moreover, kinetic studies indicate that the catalytic hydrolysis of AB by Co0.9Mo0.1/RGO has first order kinetics with respect to the the catalyst concentration, but zero order kinetics with respect to the substrate concentration. The Co0.9Mo0.1/RGO catalyst has a turnover frequency (TOF) of 15.8 mol H2·(mol·Co0.9Mo0.1/RGO)−1·min−1at 25°C. Furthermore, the Co0.9Mo0.1/RGO show good recyclability for hydrogen generation from an aqueous solution of AB, which enables the practical reuse of the catalysts. Hence, this general method can be easily extended to the facile preparation of other RGO-based metallic systems.

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Facile Synthesis of SnO2 Aerogel/Reduced Graphene Oxide Nanocomposites via in Situ Annealing for the Photocatalytic Degradation of Methyl Orange

Nanomaterials ◽

10.3390/nano9030358 ◽

2019 ◽

Vol 9 (3) ◽

pp. 358 ◽

Cited By ~ 17

Author(s):

Taehee Kim ◽

Vinayak Parale ◽

Hae-Noo-Ree Jung ◽

Younghun Kim ◽

Zied Driss ◽

...

Keyword(s):

Photocatalytic Activity ◽

Graphene Oxide ◽

Methyl Orange ◽

Reduced Graphene Oxide ◽

Chemical Interaction ◽

Sol Gel ◽

Precursor Solution ◽

Peak Shift ◽

Reduced Graphene

SnO2 aerogel/reduced graphene oxide (rGO) nanocomposites were synthesized using the sol–gel method. A homogeneous dispersion of graphene oxide (GO) flakes in a tin precursor solution was captured in a three-dimensional network SnO2 aerogel matrix and successively underwent supercritical alcohol drying followed by the in situ thermal reduction of GO, resulting in SnO2 aerogel/rGO nanocomposites. The chemical interaction between aerogel matrix and GO functional groups was confirmed by a peak shift in the Fourier transform infrared spectra and a change in the optical bandgap of the diffuse reflectance spectra. The role of rGO in 3D aerogel structure was studied in terms of photocatalytic activity with detailed mechanism of the enhancement such as electron transfer between the GO and SnO2. In addition, the photocatalytic activity of these nanocomposites in the methyl orange degradation varied depending on the amount of rGO loading in the SnO2 aerogel matrix; an appropriate amount of rGO was required for the highest enhancement in the photocatalytic activity of the SnO2 aerogel. The proposed nanocomposites could be a useful solution against water pollutants.

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