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obtained easily from the oxidation of graphite, but also can be readily exfoliated to graphene oxide (GO) nanosheets. In many studies, GO is regarded as the precursor to produce reduced graphene oxide (rGO) by chemical and thermal reduction [ 6 – 8

Open access
Resolution and Discovery
Authors:
Svetlana Jovanovic
,
Olaf C. Haenssler
,
Milica Budimir
,
Duška Kleut
,
Jovana Prekodravac
, and
Biljana Todorovic Markovic

produced by oxidation of graphite in order to obtain graphene oxide (GO) which is in the next step reduced using different methods [ 2 ]. The common methods for GO reduction are chemical reactions with hydrazine, hydroquinone, sodium borohydride, or

Open access
Journal of Flow Chemistry
Authors:
Marek Wojnicki
,
Magdalena Luty-Błocho
,
Krzysztof Mech
,
Justyna Grzonka
,
Krzysztof Fitzner
, and
Krzysztof Kurzydłowski

A composite material consisting of metallic platinum nanoparticles and reduced graphene oxide was successfully obtained in microflow reactor. Moreover, subnanometric platinum particles were observed. Reduced graphene oxide plays an important role as a stabilizing agent for platinum nanoparticles. Reduced graphene oxide coverage and platinum particle size as well as size distribution depend mainly on initial concentration of platinum(IV) ions. High level of reduced graphene oxide coverage by platinum nanoparticles (PtNPs) was obtained and is equal to 71%. This in turn effects significantly the mass ratio of reduced graphene oxide to PtNPs which is equal to 49% (w/w). Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) analysis of the obtained materials were performed. Also, catalytic properties of the obtained composite material consisting of PtNPs at reduced graphene oxide surface, towards electrochemical glucose oxidation, were investigated. It was found that the studied materials exhibit high catalytic activity for glucose electro-oxidation process.

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for PTT, due to their strong absorption in the NIR region. Recently Luo et al. prepared nanocellulose paper decorated with graphene oxide and gold nanoparticles for NIR (808 nm) triggered photothermal ablation of bacteria [ 21 ]. Colleagues from our

Open access

large enrichment capacity with good selectivity in order to efficiently capture the trace target VOCs from complex tobacco samples. Graphene oxide (GO), a crucial derivative of graphene, has good chemical stability, thermal stability, and large specific

Open access

Effect of Graphene oxide (GO) was observed on Meloidogyne incognita and Macrophomina phaseolina and on the growth of lentil in pot experiment. Treatment of plants with 10 ml solution of GO with 125, 250 and 500 ppm concentration caused a significant increase in plant dry weight over control. Inoculation of plants with M. incognita or M. phaseolina caused a significant reduction in plant dry weight over uninoculated control. Treatment of plants with 125, 250 and 500 ppm GO and subsequent inoculation with M. incognita or M. phaseolina caused a significant increase in plant dry weight over plants inoculated without GO pretreatment. Treatment of 500 ppm GO caused a greater increase in plant dry weight of M. incognita or M. phaseolina inoculated plants followed by 250 ppm and 125 ppm. Numbers of nodules per root system were high in plants without pathogen. Inoculation of M. incognita or M. phaseolina caused reduction in nodulation. However, treatment of GO in all the three concentrations had no significant effect on nodulation in plants both with and without pathogens. Treatment of GO resulted in reduced galling, nematode multiplication and root-rot index. Greater reduction in galling, nematode multiplication and root-rot index were observed in plants treated with 500 ppm GO followed by 250 ppm and 125 ppm. Indices were reduced to 4, 3 and 2, respectively, when plants with M. phaseolina were treated with 125, 250 and 500 ppm GO. This study shows that the use of GO is useful for the management of M. incognita and M. phaseolina on lentil.

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Journal of Thermal Analysis and Calorimetry
Authors:
Mark S. Romano
,
Sanjeev Gambhir
,
Joselito M. Razal
,
Adrian Gestos
,
Gordon G. Wallace
, and
Jun Chen

], resulting in graphene-like materials, such as reduced graphene oxide (R-GO). This study aims to increase the power conversion efficiency and reduce the cost of thermogalvanic cells by optimizing the electrolyte (K 3 Fe(CN) 6 /K 4 Fe(CN) 6 ) and

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Nanopages
Authors:
Elena Burakova
,
Alexandr Melezhyk
,
Alyona Gerasimova
,
Evgeny Galunin
,
Nariman Memetov
, and
Alexey Tkachev

. , Nappini S. , Granozzi G. ( 2014 ) TiO 2 /graphene nanocomposites from the direct reduction of graphene oxide by metal evaporation . Carbon 68 319 – 329 . [10] Heli

Open access

, X. , Li , C.M. 2015 . Aptamer based fluorescence recovery assay for aflatoxin B 1 using a quencher system composed of quantum dots and graphene oxide . Microchimica Acta 182 : 571 – 578

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plant hormones, such as polymer [ 18 , 22 ], MOF-199 [ 25 ], hydrophilic molecularly imprinted resin [ 26 ], Graphene oxide-SiO 2 nanocomposite [ 27 ], UiO-66/PAN [ 28 ], polyaniline [ 29 ], C 18 [ 30 ], and polyacrylonitrile [ 31 ]. Magnetic ordered

Open access