Metal–support cooperation in Al(PO3)3-supported platinum nanoparticles for the selective hydrogenolysis of phenols to arenes

2021 ◽  
Vol 4 (4) ◽  
pp. 312-321
Author(s):  
Xiongjie Jin ◽  
Rio Tsukimura ◽  
Takeshi Aihara ◽  
Hiroki Miura ◽  
Tetsuya Shishido ◽  
...  
Keyword(s):  
Platinum Nanoparticles ◽  
Supported Platinum ◽  
Metal Support ◽  
Selective Hydrogenolysis

scholarly journals Electronic metal-support interaction enhanced oxygen reduction activity and stability of boron carbide supported platinum

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Colleen Jackson ◽  
Graham T. Smith ◽  
David W. Inwood ◽  
Andrew S. Leach ◽  
Penny S. Whalley ◽  
...  
Keyword(s):  
Boron Carbide ◽  
Oxygen Reduction ◽  
Platinum Nanoparticles ◽  
Electronic Interaction ◽  
Acidic Media ◽  
X Ray ◽  
Reduction Activity ◽  
Supported Platinum ◽  
Metal Support Interaction ◽  
Metal Support

Abstract Catalysing the reduction of oxygen in acidic media is a standing challenge. Although activity of platinum, the most active metal, can be substantially improved by alloying, alloy stability remains a concern. Here we report that platinum nanoparticles supported on graphite-rich boron carbide show a 50–100% increase in activity in acidic media and improved cycle stability compared to commercial carbon supported platinum nanoparticles. Transmission electron microscopy and x-ray absorption fine structure analysis confirm similar platinum nanoparticle shapes, sizes, lattice parameters, and cluster packing on both supports, while x-ray photoelectron and absorption spectroscopy demonstrate a change in electronic structure. This shows that purely electronic metal-support interactions can significantly improve oxygen reduction activity without inducing shape, alloying or strain effects and without compromising stability. Optimizing the electronic interaction between the catalyst and support is, therefore, a promising approach for advanced electrocatalysts where optimizing the catalytic nanoparticles themselves is constrained by other concerns.

Fabrication of a Ni foam-supported platinum nanoparticles-silver/polypyrrole electrode for aqueous ammonia sensing

2020 ◽  
Vol 259 ◽  
pp. 116257 ◽  
Author(s):  
Liang Zhang ◽  
Jishun Liu ◽  
Xiaolei Peng ◽  
Qiang Cui ◽  
Dong He ◽  
...  
Keyword(s):  
Platinum Nanoparticles ◽  
Aqueous Ammonia ◽  
Ni Foam ◽  
Ammonia Sensing ◽  
Supported Platinum
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