Catalytic performance of Pt nanoparticles on reduced graphene oxide for methanol electro-oxidation

Li, Yongjie; Gao, Wei; Ci, Lijie; Wang, Chunming; Ajayan, Pulickel M.

doi:10.1016/j.carbon.2009.11.034

Cited by 907 publications

(534 citation statements)

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“…The electrochemically active surface area (ECSA) of an electrocatalyst not only can determine the number of catalytically active sites available for an electrochemical reaction, but also account for the access of a conductive path available to transfer electrons to and from the electrode surface [36,41]. The CV curves of Pt/G, PtCo/G and PtCo/MWNTs are presented in Figure 6(a).…”

Section: Resultsmentioning

confidence: 99%

“…The ratio of the forward anodic peak current density (I F ) to the reverse anodic peak current density (I R ) can be employed to evaluate catalyst tolerance to accumulation of intermediate poisoning species on the electrode surface. A higher ratio indicates more effective removal of the poisoning species on the catalyst surface [41]. As listed in Table 1, the I F /I R values for Pt/G, PtCo/G and PtCo/MWNTs were calculated to be 1.08, 1.28 and 1.04, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Most recently, some research groups have investigated graphene as catalyst support and have demonstrated that graphene can effectively improve electrocatalytic activity of Pt or PtRu nanoparticles for methanol oxidation [36][37][38][39][40][41]. However, relatively little attention has been paid so far to graphene-supported PtCo alloy nanoparticles as anode electrocatalysts for DMFCs.…”

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PtCo alloy nanoparticles supported on graphene nanosheets with high performance for methanol oxidation

2012

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PtCo alloy nanoparticles are deposited onto graphene sheets through a facile and reproducible hydrothermal method. During the hydrothermal reaction, the reduction of graphene oxide and PtCo alloy nanoparticles loading can be achieved. X-ray diffraction (XRD) analyses reveal a good crystallinity of the supported Pt nanoparticles in the composites and the formation of PtCo alloy. X-ray photoelectron spectra (XPS) results depict that Pt mainly exists in the metallic form, while much of the cobalt is oxidized. Transmission electron microscope (TEM) observations show that the PtCo alloy nanoparticles are uniformly dispersed on graphene nanosheets compared with multiwalled carbon nanotubes (MWNTs). This PtCo-graphene composite exhibits excellent electrocatalytic activity and high poison tolerance toward poisoning species for methanol oxidation reaction, far outperforming the Pt-graphene or PtCo-MWNTs composites with the same feeding ratio of Pt/carbon. graphene, PtCo alloy nanoparticles, electrocatalyst, methanol oxidation, fuel cells Citation:Huang H J, Sun D P, Wang X. PtCo alloy nanoparticles supported on graphene nanosheets with high performance for methanol oxidation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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confidence: 99%

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PtCo alloy nanoparticles supported on graphene nanosheets with high performance for methanol oxidation

2012

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“…Graphene nanosheets [14], graphene oxide (GO) and reduced graphene oxide (rGO) layers [15,16] were decorated by platinum nanoparticles synthesized in situ. Woo et al used galvanostatic electrochemical deposition to prepare Pt/rGO catalysts [17].…”

Section: Introductionmentioning

confidence: 99%

One step synthesis of chlorine-free Pt/Nitrogen-doped graphene composite for oxygen reduction reaction

Varga

Ballai

et al. 2018

Carbon

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“…Clearly, GO had two diffraction peaks at 10.9° and 42.4°, which were ascribed to the presence of oxygen functional groups, suggesting the successful preparation of GO. [43] After chemical reduction of GO by NaBH 4 , RGO nanosheets were prepared with a characteristic peak at 25.9°, indicating the reduction of oxygencontaining functional groups. [44] Another peak at 43.2° revealed a residue of oxygen group.…”

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Enhanced Electrocatalytic Activity of Dual Template Based Pt/Cu‐zeolite A/Graphene for Methanol Electrooxidation

Wang

et al. 2017

Chin. J. Chem.

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Cite this paper: Wang, S.; He, P.; He, M.; Dong, F.; Liu, H.; Lei, H.;Zhang, X.; He, S. Chin. J. Chem. 2018, 36, 37- ABSTRACT A novel Pt/Cu-zeolite A/graphene based electrocatalyst was successfully prepared by chemical reduction method for methanol electrooxidation. Graphite oxide and Cu functionalized zeolite A were simultaneously reduced by NaBH 4 to prepare Cu-zeolite A/graphene support which was used to deposit Pt nanoparticles. The nanostructure and composition of as-prepared Pt/Cu-zeolite A/graphene composites were characterized by X-ray diffractometer, X-ray fluorescence, Fourier transform infrared spectrometer and scanning electron microscopy. The electrocatalytic properties of Pt/Cu-zeolite A/graphene modified electrode for methanol oxidation were investigated by cyclic voltammetry and chronoamperometry in 0.10 mol/L H 2 SO 4 ＋0.50 mol/L CH 3 OH solution. Compared with Pt/zeolite A/graphene electrode and Pt/graphene electrode, Pt/Cu-zeolite A/graphene based electrode exhibited obviously enhanced current and higher electrocatalytic activity for methanol electrooxidation. The increased electrocatalytic activity was attributed to the presence of zeolite A and reduced graphene oxide based dual template, which significantly increased the effective electrode surface and facilitated the diffusion of analytes into the electroactive catalyst.

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Catalytic performance of Pt nanoparticles on reduced graphene oxide for methanol electro-oxidation

Cited by 907 publications

References 40 publications

PtCo alloy nanoparticles supported on graphene nanosheets with high performance for methanol oxidation

PtCo alloy nanoparticles supported on graphene nanosheets with high performance for methanol oxidation

One step synthesis of chlorine-free Pt/Nitrogen-doped graphene composite for oxygen reduction reaction

Enhanced Electrocatalytic Activity of Dual Template Based Pt/Cu‐zeolite A/Graphene for Methanol Electrooxidation

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