Platinum nanoparticles

Ebook "Computational characterisation of gold nanocluster structures" is to further our understanding of structural and compositional preferences in gold nanoparticles, as well as the compositional and chemical ordering preferences in bimetallic nanoalloys formed with other noble metals, such as palladium and platinum. Highlights include: calculations of the structural preferences and optical-response of gold nanoparticles and gold-containing nanoalloys;...

220p coduathanh1122 27-03-2024 2 1   Download

In this paper, we introduce a simple method to address the effects of temperature, pH and ethylene glycol enhancers (EG) on the morphology, the size and the distribution of the Pt nanoparticle catalyst in the process of fabricating Pt nanoparticles on carbon support (Pt NPs/C).

5p vijaguar 16-11-2022 4 1   Download

In this paper, we present the decoration of the SnO2 film-based sensor with silver or platinum nanoparticles to enhance gas sensitivity to hydrogen sulfide gas (H2S). Gas-sensitive properties and structure of fabricated sensors are investigated.

5p viaudi 04-08-2022 3 2   Download

Supported catalysts are of great interest because of their wide range of application possibilities. In this study, firstly silica spheres were synthesized and then platinum and nickel nanoparticles were incorporated on this silica by microwave irradiation, which is an efficient technique for catalyst preparation. Synthesized silica spheres and catalysts were characterized by BET, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and transmission electron microscopy techniques.

8p langthannam 29-12-2021 8 0   Download

The prepared materials were characterized by using BET, TGA, XRD, and TEM techniques. Cyclic voltammetry was used in order to determine the electrocatalytic activity of the prepared catalyst for hydrogen oxidation and oxygen reduction reactions that occur in proton exchange membrane fuel cells (PEMFCs). The Pt loading obtained over the composite material was around 10%. TEM results showed highly dispersed and small nanoparticles over the composite material by using scCO2 deposition.

8p langthannam 29-12-2021 5 0   Download

Enhanced electrocatalytic reduction of oxygen is achieved using Pt nanoparticle-modified copper phthalocyanine-multiwalled carbon nanotube (PtNPs/CuPc-CNT) composite film on a glassy carbon electrode (PtNPs/CuPcCNT/GCE). The PtNPs/CuPc-CNT/GCE surface is characterized by scanning electron microscopy, transmission electron microscopy, electrochemical impedance spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. The electrocatalytic activity of composite electrodes in the oxygen reduction reaction is investigated by cyclic voltammetry and rotating-disk electrode measurements.

16p tudichquannguyet 29-11-2021 7 1   Download

We present the results of a study related to phase transformation of chemically synthesized FePt nanoparticles under high pressure from face-centered cubic into face-centered tetragonal structure. As-synthesized nanoparticles are around 4.5 nm and show superparamagnetic behavior at 300 K. After annealing under 60 bar pressure of hydrogen at 400◦C for 2 h, nanoparticles exhibit strong ferromagnetic behavior with 5391 Oe coercivity.

7p tudichquannguyet 29-11-2021 11 2   Download

The physical and chemical properties of bimetallic nanoparticles can be optimized by tuning the particle composition. In this study, we identified CO adsorption and dissociation energetics on five Pt-Mo nanoparticles at different concentrations, the lowest energy Pt7, Pt6Mo, Pt5Mo2, Pt4Mo3, and Mo7 clusters. We have shown that the CO adsorption and dissociation energies and preferred CO adsorption sites are largely dependent on the composition of the nanoparticles.

20p tudichquannguyet 29-11-2021 5 1   Download

The aim of this study was to screen biogenic platinum nanoparticles for antifungal properties by a combination of in vitro methods. During this study, marine actinobacteria (Streptomyces sp. mediated biogenic platinum nanoparticles were screened for their antifungal activity against Aspergillus flavus, A. niger, Penicillium sp., Candida albicans and C. tropicalis. Biologically synthesized platinum nanoparticles exhibited broad spectrum antifungal activity against test organisms.

7p kethamoi6 29-06-2020 8 1   Download

The aim of this study was to screen the antibacterial activity of biogenic platinium nanoparticles. During this study platinum nanoparticles prepared from marine actinobacteria (Streptomyces sp.) were used to access antibacterial activity against Escherichia coli, Enterobacter cloacae, Klebsiella pneumoniae, Proteus vulgaris, Staphylococcus aureus, coagulase negative Staphylococcus sp. and Pseudomonas aeruginosa.

8p nguaconbaynhay6 24-06-2020 10 1   Download

Nanotechnology is an interdisciplinary having significant role in modern science. Myconanotechnology is an emerging field, where fungi are being used for the synthesis of nanoparticles with desirable size and shape. Fungi have an added advantage over bacteria as well as actinomycetes, as fungi are excellent secretors of proteins leads to a higher yield of nanoparticles which are highly stable, cost-effective, eco-friendly and non-toxic.

13p nguaconbaynhay6 23-06-2020 11 1   Download

The current study proposes a novel binary catalyst system (composed of metal/metal oxide nanoparticles) as a promising electrocatalyst in formic acid oxidation. The electro-catalytic oxidation of formic acid is carried out with binary catalysts of Pt nanoparticles (nano-Pt) and manganese oxide nanorods (nano-MnOx) electrodeposited onto glassy carbon (GC) electrodes. Cyclic voltammetric (CV) measurements showed that unmodified GC and nano-MnOx/GC electrodes have no catalytic activity. While two oxidation peaks were observed at nano-Pt/GC electrode at ca. 0.2 and 0.

7p kethamoi1 17-11-2019 13 0   Download

The catalytic exchange of hydrogen isotopes between hydrogen and water has been known to be a very useful process for the separation of tritium from tritiated water. For the process, a highly active hydrophobic catalyst is needed. This study provides an effective fabrication method of size-controlled platinum/poly[styrene-divinylbenzene-tri(propylene glycol) diacrylate] [Pt/poly(SDB-TPGDA)] hydrophobic catalyst beads with a narrow size distribution.

8p minhxaminhyeu5 30-06-2019 37 0   Download

In this work, platinum nanoparticles were dispersed on SBA-15 mesoporous material by incipient wetness method and the synthesized materials were characterized by XRD, TEM, EDX spectroscopies and N2 adsorption-desorption isotherm measurement. The results indicated that 2D hexagonal ordered structure of SBA-15 was still maintained after grafting Pt on SBA-15 support and platinum nanoparticles existed both inside and outside the pore channels of SBA-15 material. Catalytic activity of these materials was tested in the aqueous phase D-glucose oxidation as a model reaction. ...

8p tuanlocmuido 13-12-2012 52 3   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Nanocrystal and surface alloy properties of bimetallic Gold-Platinum nanoparticles

5p dauphong18 09-03-2012 39 3   Download

Wang et al. Nanoscale Research Letters 2011, 6:241 http://www.nanoscalereslett.com/content/6/1/241 NANO EXPRESS Open Access High-quality reduced graphene oxidenanocrystalline platinum hybrid materials prepared by simultaneous co-reduction of graphene oxide and chloroplatinic acid Yinjie Wang, Jincheng Liu*, Lei Liu, Darren Delai Sun* Abstract Reduced graphene oxide-nanocrystalline platinum (RGO-Pt) hybrid materials were synthesized by simultaneous coreduction of graphene oxide (GO) and chloroplatinic acid with sodium citrate in water at 80°C, of pH 7 and 10.

8p dauphong13 09-02-2012 66 6   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Size-dependent catalytic and melting properties of platinum-palladium nanoparticles

5p sting04 08-02-2012 51 6   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Beyond platinum: synthesis, characterization, and in vitro toxicity of Cu(II)-releasing polymer nanoparticles for potential use as a drug delivery vector

10p dauphong12 08-02-2012 45 2   Download