Porous Pt Nanotubes with High Methanol Oxidation Electrocatalytic Activity Based on Original Bamboo-Shaped Te Nanotubes

Lou, Yue; Li, Chunguang; Gao, Xiao; Bai, Tianyu; Chen, Cailing; Huang, He; Liang, Chunyong; Shi, Zhan; Feng, Shouhua

doi:10.1021/acsami.6b05350

Cited by 51 publications

(30 citation statements)

References 38 publications

(71 reference statements)

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“…The introduction of highly oxophilic metals (such as Ni and Cu) can decrease the CO poisoning of electrocatalyst due to the bifunctional mechanism. [31][32][33][34][35] Given the effect of chemical composition and morphology on the EOR performance, herein, we designed and synthesized the porous trimetallic PtRhCu cubic nanoboxes (CNBs) by the galvanic reaction between K 2 PtCl 4 , RhCl 3 , and Cu 2 O nanocubes template. For example, PtPdRh [24] and PtRhNi [22] alloys nanoparticles displayed the excellent electrocatalytic activity for the EOR.…”

mentioning

confidence: 99%

Porous Trimetallic PtRhCu Cubic Nanoboxes for Ethanol Electrooxidation

Han

Liu

Chen

et al. 2018

Advanced Energy Materials

244

134

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CC bond cleavage, resulting in the low fuel utilization and less than theoretical 12 elections transfer. [12,13] Thus, improving the ability of electrocatalysts for splitting CC bond is critical for the development and application of DEFCs. [14][15][16] At present, Pt is the most effective monometallic electrocatalyst for the EOR. However, expensive price and weak ability of splitting CC bond seriously hamper its commercial applications. [10,17] Recently, alloying Pt with other metal is generally considered as an efficient strategy for decreasing the cost of electrocatalyst and simultaneously improving electrocatalytic activity for the EOR. [18][19][20][21] For example, the addition of Ru and Rh elements can obviously promote the CC bond cleavage, which is beneficial to the C 1 reaction pathway of the EOR. The introduction of highly oxophilic metals (such as Ni and Cu) can decrease the CO poisoning of electrocatalyst due to the bifunctional mechanism. [17,22,23] Considering that CC bond cleavage and CO poisoning, trimetallic Pt-based electrocatalysts have been designed to simultaneously improve their CC bond cleavage capability and antipoisoning capability. For example, PtPdRh [24] and PtRhNi [22] alloys nanoparticles displayed the excellent electrocatalytic activity for the EOR.Apart from chemical composition, the morphology of nanostructures also strongly affects their electrocatalytic performance. [25][26][27][28][29][30] For example, hollow nanostructures generally show enhanced activity and stability due to their unique advantages, including large surface area, abundant active sites, high atomic utilization, rich holes, fast mass transfer, stable 3D structure, and slow Ostwald ripening. [31][32][33][34][35] Given the effect of chemical composition and morphology on the EOR performance, herein, we designed and synthesized the porous trimetallic PtRhCu cubic nanoboxes (CNBs) by the galvanic reaction between K 2 PtCl 4 , RhCl 3 , and Cu 2 O nanocubes template. The shell thickness and chemical composition of PtRhCu CNBs could be easily regulated by controlling the amount and proportion of noble metal precursors. Due to geometric effect and alloy effect, the composition optimized PtRhCu CNBs exhibited a significantly enhanced C 1 pathway selectivity for the EOR, resulting in super electrocatalytic activity and stability. Additionally, the template method could also be used to synthesize other trimetallic cubic nanoboxes (such as PtIrCu and PtAuCu CNBs), showing its universality.Direct ethanol fuel cells (DEFCs) have great activity as a green energy conversion device. However, the weak activity of most anode electrocatalysts for the CC bond cleavage is an obstacle to the DEFCs development. Herein, a simple galvanic replacement reaction strategy to synthesize hollow and porous PtRhCu trimetallic nanoboxes (CNBs) with a tunable Pt/Rh atomic ratio is developed. For the ethanol oxidation reaction (EOR), PtRhCu CNBs show morphology and composition-dependent electrocatalytic activity. The composition optimized Pt...

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confidence: 99%

Porous Trimetallic PtRhCu Cubic Nanoboxes for Ethanol Electrooxidation

Han

Liu

Chen

et al. 2018

Advanced Energy Materials

244

134

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“…Instability problems and the inherent structural evolution during potential cycling hamper the discovery of rational design principles . 1D hollow nanotubes, as freestanding electrocatalysts, are less apt to require carbon supports, which means that no aggregation or ripening occurs during potential cycling …”

Section: Introductionmentioning

confidence: 99%

Recent Advances on Controlled Synthesis and Engineering of Hollow Alloyed Nanotubes for Electrocatalysis

2019

Advanced Materials

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The past decade has witnessed great progress in the synthesis and electrocatalytic applications of 1D hollow alloy nanotubes with controllable compositions and fine structures. Hollow nanotubes have been explored as promising electrocatalysts in the fuel cell reactions due to their well‐controlled surface structure, size, porosity, and compositions. In addition, owing to the self‐supporting ability of 1D structure, hollow nanotubes are capable of avoiding catalyst aggregation and carbon corrosion during the catalytic process, which are two other issues for the widely investigated carbon‐supported nanoparticle catalysts. It is currently a great challenge to achieve high activity and stability at a relatively low cost to realize commercialization of these catalysts. An overview of the structural and compositional properties of 1D hollow alloy nanotubes, which provide a large number of accessible active sites, void spaces for electrolytes/reactants impregnation, and structural stability for suppressing aggregation, is presented. The latest advances on several strategies such as hard template and self‐templating methods for controllable synthesis of hollow alloyed nanotubes with controllable structures and compositions are then summarized. Benefiting from the advantages of the unique properties and facile synthesis approaches, the capability of 1D hollow nanotubes is then highlighted by discussing examples of their applications in fuel‐cell‐related electrocatalysis. Finally, the remaining challenges and potential solutions in the field are summarized to provide some useful clues for the future development of 1D hollow alloy nanotube materials.

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“…At present, Te, Se, Cu, or Ag NWs are used as hard templates to fabricate tubular nanostructures through the galvanic replacement reaction . As a promising sacrificial template, Te NW favors the fabrication of Pt‐based tubular nanomaterials because of its easy synthesis, long‐term air stability, and high reactivity . Despite extensive reports on 1D Pt‐based nanomaterials, most of them show smooth surfaces .…”

Section: Introductionmentioning

confidence: 99%

“…[45][46][47] As ap romising sacrificial template,T eN Wf avors the fabrication of Pt-based tubular nanomaterials because of its easy synthesis, long-term air stability, and high reactivity. [48] Despitee xtensive reports on 1D Ptbased nanomaterials, most of them show smooth surfaces. [49][50][51] Owingt oalarge accessible surface area, efficient mass transport capacity,a nd more active sites, mesoporous nanostructures exhibit excellent catalytic properties in various electrochemicala pplications.…”

Section: Introductionmentioning

confidence: 99%

Ultralong Ternary PtRuTe Mesoporous Nanotubes Fabricated by Micelle Assembly with a Self‐Sacrificial Template

Yin

Wang

Deng

et al. 2019

Chemistry A European J

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High surface area and fast mass transport rate are important to enhance the activity and stability of catalysts. In this work, tellurium nanowires and F127 triblock copolymer are used as self‐sacrificial and soft templates, respectively, to synthesize PtRuTe mesoporous nanotubes (MNTs). The designed PtRuTe MNTs show uniformly distributed mesopores and an internally hollow structure, which can effectively improve Pt utilization, the catalytic activity and durability, and CO tolerance for the methanol oxidation reaction. Very different from previous 1D metallic catalysts with solid interiors and smooth surfaces, PtRuTe MNTs are unique, with a mesoporous exterior and hollow interior. The facile route presented herein is very feasible for fabricating 1D mesoporous metallic catalysts.

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Porous Pt Nanotubes with High Methanol Oxidation Electrocatalytic Activity Based on Original Bamboo-Shaped Te Nanotubes

Cited by 51 publications

References 38 publications

Porous Trimetallic PtRhCu Cubic Nanoboxes for Ethanol Electrooxidation

Porous Trimetallic PtRhCu Cubic Nanoboxes for Ethanol Electrooxidation

Recent Advances on Controlled Synthesis and Engineering of Hollow Alloyed Nanotubes for Electrocatalysis

Ultralong Ternary PtRuTe Mesoporous Nanotubes Fabricated by Micelle Assembly with a Self‐Sacrificial Template

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