Preparation and characterization of a composite of gold nanoparticles and single-walled carbon nanotubes and its potential for heterogeneous catalysis

Shanahan, Anne E.; Sullivan, James A.; McNamara, Mary; Byrne, Hugh J.

doi:10.1016/s1872-5805(11)60087-5

Cited by 19 publications

(11 citation statements)

References 49 publications

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“…A droplet of solution (TioAuNPs) was deposited on glass cover slid (2×2) cm2 to dry the sample before scanning, it should be used furnace (at low temperature) to accelerate the drying process [15].…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Thermodynamic and Kinetic Studies of Tiopronin Gold Nanoparticles Binding With Extracted DNA of Rheumatoid Arthritis

Abdulsattar¹,

Rashid²,

Hussain³

2018

MJS

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Nanomaterial can interact with biological systems in different way, using their surface functionalities and depending on the particle size, shape, and aggregation .The present work aims to characterize the binding of tiopronin gold nanoparticles with extracted DNA from blood patients with rheumatoid arthritis kinetically and thermodynamically. A total of 19 patients with rheumatoid arthritis attending Baghdad Teaching Hospital / Medical City were included in this study. Tiopronin monolayer-protected gold nanoparticles) were prepared by chemical methods and a partial purification of DNA extracted was preceded using negative ions exchange column chromatography. Characterization of Tio Au NPs binding with DNA was investigated by using TEM,SEM,FTIR,EDX and UV-VIS. techniques.The results indicated that the average size of Tio Au NPs was 48 nm.,and there is a different binding affinity of DNA to tiopronin gold nanoparticles depending on pH. Also the melting temperature of DNA was decreased 5C0 when binding with tiopronin gold nanoparticles. Thermodynamic studies indicated that the reaction was endothermic, less order, and non spontaneous.

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Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Thermodynamic and Kinetic Studies of Tiopronin Gold Nanoparticles Binding With Extracted DNA of Rheumatoid Arthritis

Abdulsattar¹,

Rashid²,

Hussain³

2018

MJS

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“…Such properties permit graphene and/or CNTs to be used in different industrial fields of applications such as sensing, catalysts, solar cells, composites, medical applications, photonics, and fuel cells. Moreover, GNS has electrical conductivity properties sufficient to change completely the conducting behaviors of any materials [27][28][29][30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Nanosheet composed of gold nanoparticle/graphene/epoxy resin based on ultrasonic fabrication for flexible dopamine biosensor using surface-enhanced Raman spectroscopy

et al. 2020

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Construction of a fast, easy and sensitive neurotransmitters-based sensor could provide a promising way for the diagnosis of neurological diseases, leading to the discovery of more effective treatment methods. The current work is directed to develop for the first time a flexible Surface-Enhanced Raman Spectroscopy (SERS) based neurotransmitters sensor by using the ultrasonic-assisted fabrication of a new set of epoxy resin (EPR) nanocomposites based on graphene nanosheets (GNS) using the casting technique. The perspicuous epoxy resin was reinforced by the variable loading of GNS giving the general formula GNS/EPR 1-5. The designed products have been fabricated in situ while the perspicuous epoxy resin was formed. The expected nanocomposites have been fabricated using 3%, 5%, 10%, 15% and 20% GNS loading was applied for such fabrication process. The chemical, physical and morphological properties of the prepared nanocomposites were investigated by using Fourier transforms infrared spectroscopy, X-ray diffraction, Thermogravimetric analysis, Differential Thermal gravimetry, and field emission scanning electron microscopy methods. The GNS/EPR 1-5 nanocomposites were decorated with a layer of gold nanoparticles (Au NPs/GNS/EPR) to create surface-enhanced Raman scattering hot points. The wettability of the Au NPs/GNS/EPR was investigated in comparison with the different nanocomposites and the bare epoxy. Au NPs/GNS/EPR was used as a SERS-active surface for detecting different concentrations of dopamine with a limit of detection of 3.3 µM. Our sensor showed the capability to detect low concentrations of dopamine either in a buffer system or in human serum as a real sample.

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“…The formation of carbon nanotubes/nanofibres on the catalyst’s surface is a desirable form. Due to their exceptional properties, they have many potential applications in technology, for example, as polymer reinforcements (Fan et al., 2013; Opelt et al., 2015), composites (Tofighy and Mohammadi, 2015; Wang et al., 2015), materials for hydrogen storage (Lin et al., 2009; Muthu et al., 2016), electronics (Peng et al., 2014) and catalysis (Ali et al., 2015; Serp et al., 2003; Shanahan et al., 2011).…”

Section: Introductionmentioning

confidence: 99%

Nanostructured forms of carbon deposit obtained during cracking of methane reaction over nanocrystalline iron catalysts

Maj

Kocemba

2017

Adsorption Science & Technology

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During catalytic cracking of methane reaction, different carbon nanostructures can be formed. This paper shows the results of a characteristic nanostructured carbon deposit obtained during cracking of methane reaction over nanocrystalline iron catalysts with or without cobalt addition. The properties of the carbon deposit were determined by X-ray diffraction, scanning electron microscope with energy dispersive spectrometer equipment, thermogravimetry-differential thermal analysis coupled with mass spectrometry, time-of-flight secondary ion mass spectrometry analysis and surface area analysis (Brunauer-Emmett-Teller isotherm [BET]). Significant differences in the morphology and properties of the obtained carbon were found. The mechanism of the formation of carbon nanostructures for both iron catalysts is proposed.

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Preparation and characterization of a composite of gold nanoparticles and single-walled carbon nanotubes and its potential for heterogeneous catalysis

Cited by 19 publications

References 49 publications

Thermodynamic and Kinetic Studies of Tiopronin Gold Nanoparticles Binding With Extracted DNA of Rheumatoid Arthritis

Thermodynamic and Kinetic Studies of Tiopronin Gold Nanoparticles Binding With Extracted DNA of Rheumatoid Arthritis

Nanosheet composed of gold nanoparticle/graphene/epoxy resin based on ultrasonic fabrication for flexible dopamine biosensor using surface-enhanced Raman spectroscopy

Nanostructured forms of carbon deposit obtained during cracking of methane reaction over nanocrystalline iron catalysts

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