dc.contributor.author |
Rana, Moumita
|
|
dc.contributor.author |
Chhetri, Manjeet
|
|
dc.contributor.author |
Loukya, B.
|
|
dc.contributor.author |
Patil, Pramod K.
|
|
dc.contributor.author |
Datta, Ranjan
|
|
dc.contributor.author |
Gautam, Ujjal K.
|
|
dc.date.accessioned |
2016-12-22T11:48:54Z |
|
dc.date.available |
2016-12-22T11:48:54Z |
|
dc.date.issued |
2015 |
|
dc.identifier.citation |
ACS Applied Materials & Interfaces |
en_US |
dc.identifier.citation |
7 |
en_US |
dc.identifier.citation |
8 |
en_US |
dc.identifier.citation |
Rana, M.; Chhetri, M.; Loukya, B.; Patil, P. K.; Datta, R.; Gautam, U. K., High-Yield Synthesis of Sub-10 nm Pt Nanotetrahedra with Bare < 111 > Facets for Efficient Electrocatalytic Applications. ACS Applied Materials & Interfaces 2015, 7 (8), 4998-5005. |
en_US |
dc.identifier.issn |
1944-8244 |
|
dc.identifier.uri |
https://libjncir.jncasr.ac.in/xmlui/10572/1987 |
|
dc.description |
Restricted access |
en_US |
dc.description.abstract |
Unlike other shapes, the design of tetrahedral Pt nanocrystals (Pt-NTd), which have the largest number of Pt(111) surface atoms and highest catalytic activities toward the electron transfer reactions, has widely been considered a synthetic challenge due to their thermodynamic instability. Here, we show that, by inducing their nucleation on functionalized carbon, Pt NTds can be obtained with tunable sizes and high yields. The carbon support anchors the nanocrystals early and prevents their oriented attachment leading to nanowire formation. Therein, an in situ generated amine is crucial for stabilization of Pt-NTds, which can later be removed to expose the Pt(111) facets for higher catalytic efficiency. The bare nanocrystals exhibit much improved stability and electrocatalytic activity characteristic of Pt(111) toward oxygen reduction reaction (ORR) and methanol and formic acid oxidation reactions. For example, similar to 90% of their activity was retained after 5000 potential cycles, while the ORR onset potential was recorded to be very high, 1.01 V vs reversible hydrogen electrode (RHE). |
en_US |
dc.description.uri |
http://dx.doi.org/10.1021/acsami.5b00211 |
en_US |
dc.language.iso |
English |
en_US |
dc.publisher |
American Chemical Society |
en_US |
dc.rights |
?American Chemical Society, 2015 |
en_US |
dc.subject |
Nanoscience & Nanotechnology |
en_US |
dc.subject |
Materials Science |
en_US |
dc.subject |
electrocatalysis |
en_US |
dc.subject |
Pt(111) |
en_US |
dc.subject |
metal nanocrystals |
en_US |
dc.subject |
oxygen reduction reaction |
en_US |
dc.subject |
fuel cell |
en_US |
dc.subject |
methanol oxidation |
en_US |
dc.subject |
Oxygen Reduction Reaction |
en_US |
dc.subject |
Shape-Controlled Synthesis |
en_US |
dc.subject |
High-Index Facets |
en_US |
dc.subject |
Platinum Nanocrystals |
en_US |
dc.subject |
Heterogeneous Catalysts |
en_US |
dc.subject |
Assisted Synthesis |
en_US |
dc.subject |
Particle-Shape |
en_US |
dc.subject |
Fuel-Cells |
en_US |
dc.subject |
Nanoparticles |
en_US |
dc.subject |
Size |
en_US |
dc.title |
High-Yield Synthesis of Sub-10 nm Pt Nanotetrahedra with Bare < 111 > Facets for Efficient Electrocatalytic Applications |
en_US |
dc.type |
Article |
en_US |