Platinum Dendritic-Flowers Prepared by Tellurium Nanowires Exhibit High Electrocatalytic Activity for Glycerol Oxidation

Zuo, Yunpeng; Wu, Long; Cai, Kai; Li, Tingting; Yin, Wenmin; Li, Dian; Li, Na; Liu, Jiawei; Han, Heyou

doi:10.1021/acsami.5b03826

Cited by 51 publications

(42 citation statements)

References 45 publications

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“…This situation is consistent with the reported literature. 26,29 We compared the long-term poisoning rate, and we can observe that the current density of as-prepared Pt NTs decays slowly during the entire process, which indicates an enhanced stability effect of hollow porous structure during the long time range.…”

Section: Acs Applied Materials and Interfacesmentioning

confidence: 94%

“…The fact indicates that highly crystalline Pt NTs grow along the (111) direction, which agree with previous research. 26,28 Platinum element distribution was studied by EDS elemental mapping image (Figure 4d), which shows that a strong platinum signal evenly displays among the Pt NTs. Obviously, platinum element is equally distributed among the nanotubes.…”

Section: Acs Applied Materials and Interfacesmentioning

confidence: 99%

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

Lou¹,

Li²,

Gao³

et al. 2016

ACS Appl. Mater. Interfaces

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In this report, a facile and general strategy was developed to synthesize original bamboo-shaped Te nanotubes (NTs) with well-controlled size and morphology. On the basis of the as-prepared Te NTs, porous Pt nanotubes (NTs) with excellent property and structural stability have been designed and manufactured. Importantly, we avoided the use of surface stabilizing agents, which may affect the catalytic properties during the templated synthesis process. Furthermore, Pt NTs with different morphology were successfully prepared by tuning the experimental parameters. As a result, transmission electron microscopy (TEM) study shows that both Te NTs and Pt NTs have uniform size and morphology. Following cyclic voltammogram (CV) testing, the as-prepared porous Pt NTs and macroporous Pt NTs exhibited excellent catalytic activities toward electrochemical methanol oxidation reactions due to their tubiform structure with nanoporous framework. Thus, the as-prepared Pt NTs with specific porous structure hold potential usage as alternative anode catalysts for direct methanol fuel cells (DMFCs).

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Section: Acs Applied Materials and Interfacesmentioning

confidence: 94%

Section: Acs Applied Materials and Interfacesmentioning

confidence: 99%

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

Lou¹,

Li²,

Gao³

et al. 2016

ACS Appl. Mater. Interfaces

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show abstract

“…mobile client, 7 etc. While surfactants are widely used in synthesis and stabilization of nanomaterials, [8][9][10] the obtained nanomaterials could also be processed in the presence of surfactant under some conditions. Meanwhile, wide attention has been paid to Te nanostructures recently in organic and inorganic chemistry, which can reflect, at least in part, the huge application potential of the materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Tellurium Fusiform Nanoarchitectures by Controlled Living Nanowire Modification

Zuo

Rao

et al. 2016

J. Phys. Chem. C

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Control of structure enriched abundant unsaturated or dangling bonds can precisely and effectively tune the activity and durability of materials. In this study, a new strategy to obtain fusiform nano-architectures (FNA) has been found for the first time using Te nanostructures as the model materials. TeFNA could be transformed from Te nanorods (NRs) with different diameter (50, 25 nm) even the ultrathin nanowires (10 nm). Besides, a novel perspective into the preliminary mechanism combined collision theory with density functional theory (DFT) simulations was proposed to explain the transformation progress. In the mixing system of hexadecyl trimethyl ammonium bromide (CTAB) solution, the Te NR/NWs keep the translational motion together with the centroid rotation. The velocity of the two ends of TeNR/NWs is higher than that in the center under the reaction condition based on collision theory, meanwhile, the summation energy of both O 2 and CTAB put on Te (0001) surface are -606.992 eV, which means that the Te (0001) can be oxidized easily in the presence of CTAB. Moreover, this approach which regulate the morphology of the existing structure could provide a novel potential way to synthesize FNA for their advanced functional applications.

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“…[13][14][15][16] Moreover, the Pt-based materials are also developed as efficient electrocatalysts for methanol oxidation reactions in fuel cells. [13][14][15][16] Moreover, the Pt-based materials are also developed as efficient electrocatalysts for methanol oxidation reactions in fuel cells.…”

Section: Introductionmentioning

confidence: 99%

A green synthesis of “naked” Pt and PtPd catalysts for highly efficient methanol electrooxidation

et al. 2016

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Up to now, green synthesis of "naked" nanoobjects with clean surfaces is still a great challenge since structure-directing agents such as surfactants are usually used to induce the anisotropic particle growth for interesting nanostructures in solution. Here, a green synthesis approach for preparing "naked" Pt nanoparticles (NPs) in acetic acid solution was reported. Interestingly, Pt NPs with different morphologies (well-defined polyhedrons, irregular polyhedron-constructed chain networks and nanoflower-constructed chain networks) could be successfully synthesized at different concentrations of acetic acid without adding additional structure-directing agents and reducing agents. The acetic acid itself works both as structure-directing agent and reducing agent for the formation of these interesting Pt NPs. Specifically; the synthesized NPs are "naked" with clean surfaces since the acetic acid is a weakly-capping agent which can be easily removed after the washing process. The versatility of this method is further demonstrated by preparation of "naked" PtPd alloy NPs. In particular, the as-prepared "naked" Pt _5.20 and Pt 3 Pd 1_5.20 NPs are demonstrated to be excellent catalysts with much higher electroactivity and better durability than the commercial Pt black catalyst (Hispec™ 1000) for the methanol oxidation reaction. The method reported in this work may pave the way for simple, low-cost, green and eco-friendly synthesis of "naked" metal catalysts for advanced electrocatalytic applications.

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Platinum Dendritic-Flowers Prepared by Tellurium Nanowires Exhibit High Electrocatalytic Activity for Glycerol Oxidation

Cited by 51 publications

References 45 publications

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

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

Synthesis of Tellurium Fusiform Nanoarchitectures by Controlled Living Nanowire Modification

A green synthesis of “naked” Pt and PtPd catalysts for highly efficient methanol electrooxidation

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