Synthesis and Catalytic Studies of Uniform Os &amp; Os–Pd Nanoparticles Supported on MWNTs

Yung, Ka Fu; Wong, Wing Tak

doi:10.1007/s10876-006-0079-4

Cited by 18 publications

(24 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…68 The Os nanoparticles was also deposited on carbon nanotubes. 69 At rst, the metalorganic Os precursor [Os 3 (-CO) 10 (NCCH 3 ) 2 ] was dissolved in acetone and sonicated. Then, the solvent was evaporated under N 2 stream in a pyrolysis tube.…”

Section: Supported Osmium Nanoparticlesmentioning

confidence: 99%

Formation and selected catalytic properties of ruthenium, rhodium, osmium and iridium nanoparticles

2022

View full text Add to dashboard Cite

show abstract

Section: Supported Osmium Nanoparticlesmentioning

confidence: 99%

Formation and selected catalytic properties of ruthenium, rhodium, osmium and iridium nanoparticles

2022

View full text Add to dashboard Cite

show abstract

“…The use of CNT-supported catalysts to produce CNTs has been explored in order to avoid the costly purification step. Besides noble metal catalysts such as Pd or Os which are rarely used in CNT synthesis, 468 iron, cobalt and nickel are the most frequently used catalysts supported on CNTs for CNT synthesis. [469][470][471][472][473] Fe, Co and Ni supported on SWNTs for acetylene decomposition to grow MWNTs via the CVD method have been investigated.…”

Section: Oxidation Reactionsmentioning

confidence: 99%

Carbon nanotube catalysts: recent advances in synthesis, characterization and applications

et al. 2015

View full text Add to dashboard Cite

Carbon nanotubes are promising materials for various applications. In recent years, progress in manufacturing and functionalizing carbon nanotubes has been made to achieve the control of bulk and surface properties including the wettability, acid-base properties, adsorption, electric conductivity and capacitance. In order to gain the optimal benefit of carbon nanotubes, comprehensive understanding on manufacturing and functionalizing carbon nanotubes ought to be systematically developed. This review summarizes methodologies of manufacturing carbon nanotubes via arc discharge, laser ablation and chemical vapor deposition and functionalizing carbon nanotubes through surface oxidation and activation, doping of heteroatoms, halogenation, sulfonation, grafting, polymer coating, noncovalent functionalization and nanoparticle attachment. The characterization techniques detecting the bulk nature and surface properties as well as the effects of various functionalization approaches on modifying the surface properties for specific applications in catalysis including heterogeneous catalysis, photocatalysis, photoelectrocatalysis and electrocatalysis are highlighted.

show abstract

“…The metal is a strong oxidant and reacts with combustible and reducing materials. There are few reports available where Os particles were prepared by sophisticated physical vapour deposition routes [3][4][5][6] and in most cases, they are combined with other metals like Pd or Pt. The application of Os thin films appears in the patent literature only related to the fields of fuel cells, catalysis, sensors and electronic devices [5,7,8].…”

Section: Introductionmentioning

confidence: 99%

“…There are few reports available where Os particles were prepared by sophisticated physical vapour deposition routes [3][4][5][6] and in most cases, they are combined with other metals like Pd or Pt. The application of Os thin films appears in the patent literature only related to the fields of fuel cells, catalysis, sensors and electronic devices [5,7,8]. There is a need to explore simple synthetic procedures to obtain different Os nanostructures and their graphene hybrids under environmentally friendly conditions in turn to study their optical properties through surface plasmon absorption.…”

Section: Introductionmentioning

confidence: 99%

Improved surface-enhanced Raman and catalytic activities of reduced graphene oxide–osmium hybrid nano thin films

et al. 2017

View full text Add to dashboard Cite

Reduced graphene oxide–osmium (rGO-Os) hybrid nano dendtrites have been prepared by simple liquid/liquid interface method for the first time. The method involves the introduction of phase-transfered metal organic precursor in toluene phase and GO dispersion in the aqueous phase along with hydrazine hydrate as the reducing agent. Dendritic networks of Os nanoparticles and their aggregates decorating rGO layers are obtained. The substrate shows improved catalytic and surface-enhanced activities comparable with previous reports. The catalytic activity was tested for the reduction of p-nitroaniline into p-phenyldiamine with an excess amount of NaBH4. The catalytic activity factors of these hybrid films are 2.3 s−1 g−1 (Os film) and 4.4 s−1 g−1 (rGO-Os hybrid film), which are comparable with other noble metal nanoparticles such as Au, Ag, but lower than Pd-based catalysts. Surface-enhanced Raman spectroscopy (SERS) measurements have been done on rhodamine 6G (R6G) and methylene blue dyes. The enhancement factor for the R6G adsorbed on rGO-Os thin film is 1.0 × 105 and for Os thin film is 7 × 103. There is a 14-fold enhancement observed for Os hybrids with rGO. The enhanced catalytic and SERS activities of rGO-Os hybrid thin film prepared by simple liquid/liquid interface method open up new challenges in electrocatalytic application and SERS-based detection of biomolecules.

show abstract

Synthesis and Catalytic Studies of Uniform Os & Os–Pd Nanoparticles Supported on MWNTs

Cited by 18 publications

References 42 publications

Formation and selected catalytic properties of ruthenium, rhodium, osmium and iridium nanoparticles

Formation and selected catalytic properties of ruthenium, rhodium, osmium and iridium nanoparticles

Carbon nanotube catalysts: recent advances in synthesis, characterization and applications

Improved surface-enhanced Raman and catalytic activities of reduced graphene oxide–osmium hybrid nano thin films

Contact Info

Product

Resources

About