Fabrication of Highly Stable and Efficient PtCu Alloy Nanoparticles on Highly Porous Carbon for Direct Methanol Fuel Cells

Khan, Inayat Ali; Qian, Yuhong; Badshah, Amin; Zhao, Dan; Nadeem, Muhammad Arif

doi:10.1021/acsami.6b06068

Cited by 56 publications

(48 citation statements)

References 58 publications

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“…The said modified Pt-based catalysts described in our literature reviews involve the addition of other metals, e.g. Pt-Ru [7][8], Pt-Co [9], Pt-Cu [10], Pt-Mo [11], Pt-Pd [12], PtRu-Mo [13] -and even Pt-Ru-O-Ir catalyst systems [14]. However, we will not discuss in detail the processes in DMFCs, but we focus on the fundamental part of H2O-Pt systems as one of the reaction steps in MOR, in a scientific perspective.…”

Section: Introductionmentioning

confidence: 99%

Water Molecular Adsorption on the Low-Index Pt Surface: A Density Functional Study

et al. 2018

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We report the different way to explain the nature of water molecule (H2O) adsorption on the platinum (Pt) surfaces with low Miller index, i.e., (100), (110) ABSTRAK Kami melaporkan cara yang berbeda dalam menjelaskan adsorpsi molekul air (H2O) pada permukaan platina (Pt) dengan indeks-indeks Miller rendah, yaitu (100), (110), dan (111). Pada riset ini digunakan perhitunganperhitungan berbasis teori fungsional kerapatan (DFT) untuk menganalisis hubungan antara kekuatan ikatan antara air-permukaan

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Section: Introductionmentioning

confidence: 99%

Water Molecular Adsorption on the Low-Index Pt Surface: A Density Functional Study

et al. 2018

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“…[25][26][27] Unlike their monometallic counterparts, bimetallic nanomaterials ordinarily present better performance beneficial from synergistic effects, which means that the electrochemical performance of the whole will be superior than the sum of its parts. [45,46] PtM (M = Fe, Co, Ni, etc.) [31][32][33][34] Reducing the Pt loading without compromising its performance is the target of electrocatalytic investigations.…”

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confidence: 99%

“…[35][36][37] The typical approach is to incorporate with another metal, which could obtain better performance with much prolonged duration than the traditional commercial Pt/C. [45,46] PtM (M = Fe, Co, Ni, etc.) [45,46] PtM (M = Fe, Co, Ni, etc.)…”

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confidence: 99%

A Comprehensive Review on Controlling Surface Composition of Pt‐Based Bimetallic Electrocatalysts

Zhang

Yang

Wang

et al. 2018

Advanced Energy Materials

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version efficiency. [12][13][14][15] Among these metal electrocatalysts, platinum (Pt) exhibits the best activity for formic acid electrooxidation, ethanol electrooxidation, and oxygen reduction. However, pure Pt electrocatalyst faces several severe shortages, which limit its wide application in fuel cells. First, for formic acid and ethanol electrooxidation on pure Pt, the poisoning phenomenon (poison intermediates adsorption) usually happens on the surface of Pt, which will significantly decrease its electrocatalytic performance. [16][17][18][19][20] Second, for cathodic reaction, the oxygen reduction on pure Pt is sluggish. [21][22][23][24] Third, Pt is noble metal, which is limited reserve in nature. Therefore, how to reduce the Pt content and at the same time maintain its electrochemical performance are critical to achieve the commercialization of fuel cell.Bimetallic nanomaterials play an essential role in electrochemical energy conversion and storage, such as in fuel cells and metal-air batteries. [25][26][27] Unlike their monometallic counterparts, bimetallic nanomaterials ordinarily present better performance beneficial from synergistic effects, which means that the electrochemical performance of the whole will be superior than the sum of its parts. [28][29][30] In the case of the noble metals (especially Pt), their high cost and scarcity are obstructing the commercial viability of fuel cells. [31][32][33][34] Reducing the Pt loading without compromising its performance is the target of electrocatalytic investigations. [35][36][37] The typical approach is to incorporate with another metal, which could obtain better performance with much prolonged duration than the traditional commercial Pt/C. There are a great quantity of works on Ptbased bimetallic electrocatalysts, such as alloying Pt with 3d-transition metals, including Fe, [38,39] Co, [40][41][42] Ni, [43,44] and Cu. [45,46] PtM (M = Fe, Co, Ni, etc.) bimetallic nanomaterials have been demonstrated to be promising electrocatalysts, which strategic enhancement and development of the performance of commercial Pt/C electrocatalyst; and fundamental researches have shown that the enhanced catalytic activity originates from the modified electronic structures and geometric structures of Pt in these alloy catalysts. [47][48][49] It is a remarkable fact that these electrocatalytic reactions merely occur on the surface of the electrocatalysts. [28,50] Thus, the surface constituents of electrocatalysts determine the adsorption/desorption behaviors of the reactants and intermediates during the electrochemical reaction. Therefore, the catalytic reactions mechanisms and efficiencies strongly rely on the With increasing energy demands worldwide, significant efforts have been made to develop superior electrocatalysts for efficient energy conversion systems. Among all the electrocatalysts exploited, Pt-based bimetallic nanomaterials stand out by virtue of their high catalytic activity and relatively low cost due to the introduction of a nonprecious metal component. I...

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“…Therefore, the ultimateg oalo fr esearchers is to developh ighly efficient yet more economicalP tc atalysts for various reactions, including the hydrolytic dehydrogenation of AB andH B. [22][23][24] We report herein an ew and facile wet-chemical synthesis of monodisperse CuPt alloy NPs and their assembly on various large-surface-area carbon-based support materials to be employed as catalysts in the hydrolysis of AB and HB. [16] Besides monometallicN Ps, bimetallic NPs have emerged in recent years as highly activea nd selectiveh eterogeneous catalysts because of synergistic effects between the two distinct metals.…”

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confidence: 99%

Facile Synthesis of Monodisperse Copper–Platinum Alloy Nanoparticles and Their Superb Catalysis in the Hydrolytic Dehydrogenation of Ammonia Borane and Hydrazine Borane

2017

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Amongt he all emergentc hemical hydrogen-storage materials, B-N-H compounds, especially ammonia borane (AB) and hydrazine borane (HB), appear to be the most favorable ones owing to their advantageous features. However, hydrogen generation from these compounds in an efficient and controllable way is required for the development of new catalytic systems. We report herein af acile wet-chemical synthesis of an ew nanocatalyst, namely,m onodisperse CuPt alloy nanoparticles (NPs) supported on Ketjen Black (KB-CuPt), that exhibits unprecedented catalytic activity in the hydrolytic dehydrogenation of AB and HB with initial turnover frequencies (TOF) of 859 and 832 mol H 2 mol Pt À1 min À1 ,r espectively,u nder ambient conditions. The reported TOF values are record amonga ll Pt-based catalysts that have been tested in both hydrolysis reactions hitherto. This study also includes detailed kinetics of the KB-Cu 68 Pt 32catalyzed hydrolytic dehydrogenation of both AB and HB studied on av ariety of parameters.[a] T. Figure 4. Kineticsoft he KB-Cu 68 Pt 32 -catalyzedh ydrolytic dehydrogenation of hydrazine borane (HB) with different a) alloy compositions {catalyst (5.0 mg, 0.002 mmol Pt), [HB] = 100 mm, T = 298 K}, b) catalysta mounts ([HB] = 100 mm, T = 298 K), c) temperatures {catalyst( 2.5 mg, 0.001 mmol Pt), [HB] = 100 mm}, and d) runs (reusability test).

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Fabrication of Highly Stable and Efficient PtCu Alloy Nanoparticles on Highly Porous Carbon for Direct Methanol Fuel Cells

Cited by 56 publications

References 58 publications

Water Molecular Adsorption on the Low-Index Pt Surface: A Density Functional Study

Water Molecular Adsorption on the Low-Index Pt Surface: A Density Functional Study

A Comprehensive Review on Controlling Surface Composition of Pt‐Based Bimetallic Electrocatalysts

Facile Synthesis of Monodisperse Copper–Platinum Alloy Nanoparticles and Their Superb Catalysis in the Hydrolytic Dehydrogenation of Ammonia Borane and Hydrazine Borane

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