Influence of Surface Functionalization on the Growth of Gold Nanostructures on Graphene Thin Films

Kim, Young‐Kwan; Na, Hee-Kyung; Min, Dal‐Hee

doi:10.1021/la102372z

Cited by 76 publications

(78 citation statements)

References 24 publications

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“…3, the Raman spectrum of the pristine CNTs consisted of two intense peaks at 1344 cm -1 and 1582 cm -1 , corresponding to the D and G bands, respectively. The D band constituted a disorderinduced feature originating from the vibrations of the C atoms with dangling bonds, whereas the G band arose from a tangential shear mode in the C atoms that corresponded to the stretching mode in the graphite plane [25,26]. The D/G band intensity ratio (I D /I G ) was linearly related to the inverse of the in-plane crystallite dimensions.…”

Section: Photocatalytic Testingmentioning

confidence: 99%

Characterization and photocatalytic performance of SnO2–CNT nanocomposites

Kim

Choi

2015

Applied Surface Science

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Section: Photocatalytic Testingmentioning

confidence: 99%

Characterization and photocatalytic performance of SnO2–CNT nanocomposites

Kim

Choi

2015

Applied Surface Science

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“…S6). If other shapes are desired then different development chemistry shall be used, for example decylpyrene surfactant was reported to be more effective in nanorod formation than CTAB when particles are grown on graphene surface (Kim et al 2010). …”

Section: Substratementioning

confidence: 99%

“…A combination of these two methods is a seed-mediated growth of small particles attached to the graphene surface, which improves control over the particle formation process. The majority of studies on nanoparticle/graphene composites perform the synthesis stem in bulk solution (Jasuja and Berry 2009; Lee et al 2011;Liu et al 2012;Muszynski et al 2008) with only a few in situ growth observations at the solid-liquid (Kim et al 2010). …”

Section: Introductionmentioning

confidence: 99%

Growth kinetics of gold nanoparticles on silica/graphene surfaces for multiplex biological immunoassays

Olkhov

Shaw

2014

RSC Adv.

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Kinetics of seed-mediated chemical growth of gold nanoparticles on substrates coated with a thin layer of a number of graphene materials were studied with ultimate goal of employing the developed graphene-nanoparticle composites in light-scattering imaging biosensor applications. The type of the surface coating and chemical conditions influence the surface number density and size of the grown nanoparticles. Importantly, when used as biosensor base, the substrates coated with protein reduced graphene oxide have shown beneficial biological compatibility towards immobilized antibodies resulting in about 20-fold improved antigen capture immunoassay performed on the multiplex photonic biosensor platform.

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“…First, bimetallic Ag@Cu NRDs were developed on LÀERGO nanosheets by the simple seed mediated growth approach [31]. Subsequently, Cu shell would be replaced by Pd through the galvanic replacement method.…”

Section: Introductionmentioning

confidence: 99%

Electroreduction of Nitroaromatic Compounds at Electrochemically Reduced Graphene Oxide Supported Bimetallic Ag@Pd Nanorods Modified Electrodes

2016

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The design and fabrication of nanostructured electrode with high activity at low cost are crucial elements in studying the toxicity of environmental pollutants. Here, we develop a combined step of generating Electrochemically Reduced Graphene Oxide (ERGO) nanosheets on the surface of the glassy carbon electrode where an effective seed mediated growth followed by a galvanic exchange process were introduced for the direct growth of Ag core @Pd shell nanorods (Ag@Pd NRDs). The resulting electrode possesses a large surface area, interconnected porous networks, uniform distribution of bimetallic Ag@Pd NRDs with extremely thin size of Pd generation and good electrical conductivity, which are highly desirable for the electrocatalytic reduction of nitroaromatic compounds (NACs). In the fabrication step, the shell like Cu at the bimetallic NRDs acts as a sacrificial template for forming a thin layer of Pd at Ag NRDs surface by redox replacement reaction. Thus, the resultant Ag@Pd NRDs on ERGO modified electrode was profoundly tested for the electrochemical sensing of NACs with high sensitivity, selectivity and a very low detection limit of 1.8×10−11 M. Differential Pulse Voltammetry (DPV) was used to study the linear range of 4‐nitroaniline (4‐NA) between 1.0×10−9 M and 1.2×10−8 M. The modified electrode exhibits better reproducibility and long term stability. In addition, the modified electrode out performed well in the real sample analysis containing NACs in the presence of different interfering cations and anions.

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Influence of Surface Functionalization on the Growth of Gold Nanostructures on Graphene Thin Films

Cited by 76 publications

References 24 publications

Characterization and photocatalytic performance of SnO2–CNT nanocomposites

Characterization and photocatalytic performance of SnO2–CNT nanocomposites

Growth kinetics of gold nanoparticles on silica/graphene surfaces for multiplex biological immunoassays

Electroreduction of Nitroaromatic Compounds at Electrochemically Reduced Graphene Oxide Supported Bimetallic Ag@Pd Nanorods Modified Electrodes

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