FTIR Study of the Adsorption of the Capping Material to Different Platinum Nanoparticle Shapes

2003 ◽  
Vol 107 (40) ◽  
pp. 8371-8375 ◽  
Author(s):  
Janet Petroski ◽  
Mostafa A. El-Sayed
Keyword(s):  
Platinum Nanoparticle ◽  
Ftir Study ◽  
Nanoparticle Shapes

scholarly journals Fast identification of optimal pure platinum nanoparticle shapes and sizes for efficient oxygen electroreduction

2019 ◽  
Vol 1 (8) ◽  
pp. 2901-2909 ◽  
Author(s):  
Marlon Rück ◽  
Aliaksandr Bandarenka ◽  
Federico Calle-Vallejo ◽  
Alessio Gagliardi
Keyword(s):  
Size Effects ◽  
Oxygen Electroreduction ◽  
Platinum Nanoparticle ◽  
Pure Platinum ◽  
Fast Identification ◽  
Mass Activity ◽  
Nanoparticle Shapes

Unraveling size effects on the mass activity guides chemical routes for synthesis of optimized pure platinum electrocatalysts.

Acid-base properties and supramolecular structure ofN-[(hydroxymethyl)triazolyl]triflamides: DFT, ab initio, and FTIR study

2016 ◽  
Vol 30 (5) ◽  
pp. e3623 ◽  
Author(s):  
Bagrat A. Shainyan ◽  
Nina N. Chipanina ◽  
Larisa P. Oznobikhina ◽  
Vladimir I. Meshcheryakov
Keyword(s):  
Ab Initio ◽  
Supramolecular Structure ◽  
Acid Base ◽  
Ftir Study ◽  
Base Properties

scholarly journals Mechanistic Study on Facet-Dependent Deposition of Metal Nanoparticles on Decahedral-Shaped Anatase Titania Photocatalyst Particles

Catalysts ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 542 ◽  
Author(s):  
Kenta Kobayashi ◽  
Mai Takashima ◽  
Mai Takase ◽  
Bunsho Ohtani
Keyword(s):  
Mechanistic Study ◽  
Phase Reaction ◽  
Surface Charges ◽  
Platinum Nanoparticle ◽  
Nanoparticle Deposition ◽  
Selective Reaction ◽  
Anatase Titania ◽  
Deposition Density ◽  
Titania Photocatalyst ◽  
Source Materials

Facet-selective gold or platinum-nanoparticle deposition on decahedral-shaped anatase titania particles (DAPs) exposing {001} and {101} facets via photodeposition (PD) from metal-complex sources was reexamined using DAPs prepared with gas-phase reaction of titanium (IV) chloride and oxygen by quantitatively evaluating the area deposition density on {001} and {101} and comparing with the results of deposition from colloidal metal particles in the dark (CDD) or under photoirradiation (CDL). The observed facet selectivity, more or less {101} preferable, depended mainly on pH of the reaction suspensions and was almost non-selective at low pH regardless of the deposition method, PD or CDL, and the metal-source materials. Based on the results, the present authors propose that facet selectivity is attributable to surface charges (zeta potential) depending on the kind of facets, {001} and {101}, and pH of the reaction mixture and that this concept can explain the observed facet selectivity and possibly the reported facet selectivity without taking into account facet-selective reaction of photoexcited electrons and positive holes on {101} and {001} facets, respectively.

scholarly journals 3D Microprinting of Iron Platinum Nanoparticle‐Based Magnetic Mobile Microrobots

2021 ◽  
Vol 3 (1) ◽  
pp. 2170012
Author(s):  
Joshua Giltinan ◽  
Varun Sridhar ◽  
Ugur Bozuyuk ◽  
Devin Sheehan ◽  
Metin Sitti
Keyword(s):  
Platinum Nanoparticle ◽  
Iron Platinum

scholarly journals A numerical frame work of magnetically driven Powell-Eyring nanofluid using single phase model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Wasim Jamshed ◽  
Mohamed R. Eid ◽  
Kottakkaran Sooppy Nisar ◽  
Nor Ain Azeany Mohd Nasir ◽  
Abhilash Edacherian ◽  
...  
Keyword(s):  
Differential Equations ◽  
Numerical Solutions ◽  
Volume Fraction ◽  
Dissipative Flow ◽  
Uniform Medium ◽  
Heat Transport Properties ◽  
Flow Heat ◽  
Frame Work ◽  
Slippery Surface ◽  
Nanoparticle Shapes

AbstractThe current investigation aims to examine heat transfer as well as entropy generation analysis of Powell-Eyring nanofluid moving over a linearly expandable non-uniform medium. The nanofluid is investigated in terms of heat transport properties subjected to a convectively heated slippery surface. The effect of a magnetic field, porous medium, radiative flux, nanoparticle shapes, viscous dissipative flow, heat source, and Joule heating are also included in this analysis. The modeled equations regarding flow phenomenon are presented in the form of partial-differential equations (PDEs). Keller-box technique is utilized to detect the numerical solutions of modeled equations transformed into ordinary-differential equations (ODEs) via suitable similarity conversions. Two different nanofluids, Copper-methanol (Cu-MeOH) as well as Graphene oxide-methanol (GO-MeOH) have been taken for our study. Substantial results in terms of sundry variables against heat, frictional force, Nusselt number, and entropy production are elaborate graphically. This work’s noteworthy conclusion is that the thermal conductivity in Powell-Eyring phenomena steadily increases in contrast to classical liquid. The system’s entropy escalates in the case of volume fraction of nanoparticles, material parameters, and thermal radiation. The shape factor is more significant and it has a very clear effect on entropy rate in the case of GO-MeOH nanofluid than Cu-MeOH nanofluid.

FTIR study of self-protonation and gel formation in pyridinic solutions of poly(4-vinylpyridine)

2000 ◽  
Vol 24 (3) ◽  
pp. 109-111 ◽  
Author(s):  
Mark Rozenberg ◽  
Evgenya Vaganova ◽  
Shlomo Yitzchaik
Keyword(s):  
Gel Formation ◽  
Ftir Study
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