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High-Yield Synthesis of Sub-10 nm Pt Nanotetrahedra with Bare < 111 > Facets for Efficient Electrocatalytic Applications

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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


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