Visualization of oscillatory behaviour of Pt nanoparticles catalysing CO oxidation

2014 ◽  
Vol 13 (9) ◽  
pp. 884-890 ◽  
Author(s):  
S. B. Vendelbo ◽  
C. F. Elkjær ◽  
H. Falsig ◽  
I. Puspitasari ◽  
P. Dona ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Oscillatory Behaviour

Synthesis and characterization of Au, Pt supported on graphene aerogel catalysts for CO oxidation at low temperature

2021 ◽  
Vol 11 (1) ◽  
pp. 118-122
Author(s):  
Chuyen Phan Thi ◽  
Hang Tran Thi Thanh ◽  
Phong Pham Nam ◽  
Ha Vu Thi Thu
Keyword(s):  
Low Temperature ◽  
Ambient Temperature ◽  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Graphene Aerogel ◽  
Highly Dispersed ◽  
Average Size

Au, Pt supported on graphene aerogel catalysts (PtAu/rGOA) with molar ratio of Pt and Au of 1:1, and total metal concentration of 5 % were successfully synthesized by hydrothermal method.  The obtained catalysts were characterized by Raman, XRD, XPS, HR-TEM, BET. It revealed that Au and Pt nanoparticles with average size of 3 – 5 nm were highly dispersed on aerogel graphene. The activity of these catalysts was tested  in CO oxidation. The results showed that the conversion of CO at ambient temperature was 100% during 25 minutes. Accordingly, PtAu/rGOA could be considered as a potential catalysts for CO oxidation at low temperature.

In situ X-ray Absorption Analysis of ∼1.8 nm Dendrimer-Encapsulated Pt Nanoparticles during Electrochemical CO Oxidation

ChemPhysChem ◽  
2010 ◽  
Vol 11 (13) ◽  
pp. 2942-2950 ◽  
Author(s):  
Michael G. Weir ◽  
V. Sue Myers ◽  
Anatoly I. Frenkel ◽  
Richard M. Crooks
Keyword(s):  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Absorption Analysis ◽  
X Ray ◽  
X Ray Absorption

Metal-Support Interaction of Pt Nanoparticles with Ionically and Non-Ionically Conductive Supports for CO Oxidation

2012 ◽  
Vol 15 (3) ◽  
pp. E14 ◽  
Author(s):  
Rima J. Isaifan ◽  
Holly A. E. Dole ◽  
Emil Obeid ◽  
Leonardo Lizarraga ◽  
Philippe Vernoux ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support

Modulation of the catalytic activity of Pt nanoparticles through charge-transfer interactions with metal–organic frameworks

2017 ◽  
Vol 53 (50) ◽  
pp. 6720-6723 ◽  
Author(s):  
Shotaro Yoshimaru ◽  
Masaaki Sadakiyo ◽  
Aleksandar Staykov ◽  
Kenichi Kato ◽  
Miho Yamauchi
Keyword(s):  
Catalytic Activity ◽  
Charge Transfer ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Metal Organic Frameworks ◽  
Pt Nanoparticles ◽  
Charge Transfer Interaction ◽  
Co Oxidation Reaction ◽  
Metal Organic ◽  
A Charge

A charge transfer interaction between Pt nanoparticles and MOFs modulated the catalytic activity of Pt for a CO oxidation reaction.

scholarly journals Catalytic CO Oxidation and H2O2 Direct Synthesis over Pd and Pt-Impregnated Titania Nanotubes

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 949
Author(s):  
Lucas Warmuth ◽  
Gülperi Nails ◽  
Maria Casapu ◽  
Sheng Wang ◽  
Silke Behrens ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Co Oxidation ◽  
Gas Phase ◽  
Surface Area ◽  
Heterogeneous Catalysts ◽  
Direct Synthesis ◽  
Pt Nanoparticles ◽  
Titania Nanotubes ◽  
Catalytic Co Oxidation ◽  
H2o2 Direct Synthesis

Titania nanotubes (TNTs) impregnated with Pd and Pt nanoparticles are evaluated as heterogeneous catalysts in different conditions in two reactions: catalytic CO oxidation (gas phase, up to 500 °C) and H2O2 direct synthesis (liquid phase, 30 °C). The TNTs are obtained via oxidation of titanium metal and the intermediate layer-type sodium titanate Na2Ti3O7. Thereafter, the titanate layers are exfoliated and show self-rolling to TNTs, which, finally, are impregnated with Pd or Pt nanoparticles at room temperature by using Pd(ac)2 and Pt(ac)2. The resulting crystalline Pd/TNTs and Pt/TNTs are realized with different lengths (long TNTs: 2.0–2.5 µm, short TNTs: 0.23–0.27 µm) and a specific surface area up to 390 m2/g. The deposited Pd and Pt particles are 2–5 nm in diameter. The TNT-derived catalysts show good thermal (up to 500 °C) and chemical stability (in liquid-phase and gas-phase reactions). The catalytic evaluation results in a low CO oxidation light-out temperature of 150 °C for Pt/TNTs (1 wt-%) and promising H2O2 generation with a productivity of 3240 molH2O2 kgPd−1 h−1 (Pd/TNTs, 5 wt-%, 30 °C). Despite their smaller surface area, long TNTs outperform short TNTs with regard to both CO oxidation and H2O2 formation.

Facile synthesis of PbTiO3 truncated octahedra via solid-state reaction and their application in low-temperature CO oxidation by loading Pt nanoparticles

2014 ◽  
Vol 2 (24) ◽  
pp. 9035-9039 ◽  
Author(s):  
Simin Yin ◽  
Yihan Zhu ◽  
Zhaohui Ren ◽  
Chunying Chao ◽  
Xiang Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solid State ◽  
Low Temperature ◽  
Co Oxidation ◽  
Solid State Reaction ◽  
Pt Nanoparticles ◽  
Facile Synthesis ◽  
Low Temperature Co Oxidation

Pt NPs have been investigated to selectively nucleate on the {111} facets of PbTiO3 truncated octahedra, exhibiting a remarkable low-temperature catalytic activity towards CO oxidation with a 100% conversion at ∼50 °C.

scholarly journals Ordered intermetallic Pt–Cu nanoparticles for the catalytic CO oxidation reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85634-85642 ◽  
Author(s):  
Govindachetty Saravanan ◽  
Rohini Khobragade ◽  
Laxmi Chand Nagar ◽  
Nitin Labhsetwar
Keyword(s):  
Particle Size ◽  
Co Oxidation ◽  
Oxidation Reaction ◽  
Average Particle Size ◽  
Pt Nanoparticles ◽  
Average Particle ◽  
Cu Nanoparticles ◽  
Catalytic Co Oxidation ◽  
Co Oxidation Reaction ◽  
Ordered Intermetallic

Intermetallic platinum (Pt) nanoparticles using the abundantly available element copper (Pt3Cu, PtCu, PtCu3) with an average particle size of 4–5 nm on a γ-Al2O3 support were prepared to reduce the consumption of Pt for the removal of CO from gases.

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