Simultaneous sulfonation and reduction of graphene oxide as highly efficient supports for metal nanocatalysts

He, Daping; Kou, Zongkui; Xiong, Yuli; Cheng, Kun; Xu, Chen; Mu, Shichun; Mu, Shichun

doi:10.1016/j.carbon.2013.09.005

Cited by 107 publications

(68 citation statements)

References 41 publications

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“…A c c e p t e d M a n u s c r i p t efficientrouting to growternary nickel cobaltite on highly conductive carbonmaterialis highly challenging but desirable.It is evident that introducing -SO 3 H -groups can lead to a significant increase in hydrophilicity of support material and easilyabsorbthe positively charged precursor ionsthrough theelectrostatic interaction with the negative functional groups, andthen increase the dispersion of metal [27,28]and metal oxide nanostructures [29].Ding and coworkerspreparedvarious of sulfonated polymers (such as polystyrene [30], polydivinylbenzene [15,31,32], etc. )as the stabilizer for the preparation of metal oxidenanosheets, and the resulting metal oxide composite showed much better performance in lithium storage than that in unsulfonated support material.However, to maintain the feature of the metal oxide nanosheets, the pyrolysis temperature of the composite is relative low, leading to that the electron conductivity might not be satisfactory.…”

Section: Page 5 Of 30mentioning

confidence: 98%

Carbon nanotube template synthesis of hierarchical NiCoO2 composite for non-enzyme glucose detection

Tang

Zhang

Xiao

et al. 2016

Sensors and Actuators B: Chemical

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Section: Page 5 Of 30mentioning

confidence: 98%

Carbon nanotube template synthesis of hierarchical NiCoO2 composite for non-enzyme glucose detection

Tang

Zhang

Xiao

et al. 2016

Sensors and Actuators B: Chemical

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“…GO has been extensively studied as organic filler to a variety of polymer matrices as a mean of improving or modifying the properties of the polymers for different applications including fuel cells [13][14][15][16][17][18][19][20][21][22][23][24]. Polyethylene oxide was modified with 0.5% GO to create a proton conducting membrane with enhanced properties [25].…”

Section: Introductionmentioning

confidence: 99%

Polymer Nanocomposite Membranes of Sulfonated Poly(Styrene‐Isobutylene‐Styrene) With Sulfonated Graphene Oxide for Fuel Cell and Protective Clothing Applications

Ruiz-Colón

Pérez‐Pérez

Ortiz-Negrón

et al. 2018

Polymer Engineering & Sci

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Graphene oxide (GO) and its sulfonated analog (sGO) have been incorporated into sulfonated poly(styrene‐isobutylene‐styrene) (SO3H SIBS) in order to enhance its water retention and proton conductivity, while aiming to block permeant passage through the material. The polymer nanocomposite membranes (PNMs) were tested for two applications: direct methanol fuel cell and chemical and biological protective clothing. The transport properties of the membranes were determined as a function of SIBS sulfonation level (i.e., 37, 61, and 88 mol%), filler type (i.e., GO and sGO) and filler loading (i.e., 1, 3, 5, and 10 wt%). Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) confirmed the functionalization and incorporation of the fillers into SO3H SIBS. No significant changes were observed in the thermal stability or FTIR spectra of the PNMs after addition of the fillers. Dissimilar behaviors were observed for the ion exchange capacity, water absorption capabilities and transport properties of the membranes after incorporation of the fillers. Atomic force microscopy (AFM) phase images and Fenton's test results indicate that the oxidative stability of the PNMs is associated to the interconnectivity between the hydrophilic domains of the fillers and SO3H SIBS. The PNMs presented low permeability and high proton conductivity and thus, functioned adequately for both applications. POLYM. ENG. SCI., 59:E455–E467, 2019. © 2018 Society of Plastics Engineers

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“…Hydrophobic polytetrafluoroethylene (PTFE) is added into the gas diffusion layer to enhance water management, whereas Nafion ionomer is mixed with the catalyst later (CL) to improve the utilization of Pt catalyst. Electrochemical characterization has shown that the catalysts supported on functionalized carbons had a better performance for alcohol electro-oxidation [10][11][12][13] , formic acid electro-oxidation 14,15 , EG electro-oxidation 16 and oxygen reduction reaction 7,8,[17][18][19][20][21][22][23][24] as compared to unsulfonated counterparts. Besides, Nafion ionomer often affects the efficiency of the Pt catalyst by blocking the active sites thereby restricting the gas permeability of the catalyst layer as well as its electronic conductivity.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of MEA based on sulfonic acid functionalized carbon supported platinum nanoparticles for oxygen reduction reaction in PEMFCs

et al. 2015

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The Nafion ionomer affects the efficiency of the platinum (Pt) catalyst by blocking the active sites thereby restricting the gas permeability of the catalyst layer; but, there is a limitation in the quantity of Nafion ionomer that needs to be added without affecting the cell performance. Sulfonation of carbon-supported catalysts as mixed electronic and protonic conductors has been reported to be an efficient way to increase the triple-phase boundaries. In order to improve the utilization and activity of cathodic catalysts in the oxygen reduction reaction (ORR), Pt nanoparticles were loaded on the mixture of Vulcan XC-72R and MWCNTs, which were functionalized in a mixture of 96% sulfuric acid and 4aminobenzenesulfonic acid using sodium nitrite to produce intermediate diazonium salts from substituted anilines. The influence of sulfonation on the structural, surface, morphological and catalytic characteristics of the catalysts was explored using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and electrochemical techniques. The performance of the ORR was optimal in the following condition: 75 wt% f-MWCNTs and 25 wt% f-Vulcan XC-72R (5%). The optimum loading of Nafion was found to be 15 wt. % and the MEA was fabricated according to this Nafion loading which is lower than that of other MEAs. The maximum power density of MEA with the modified electrocatalyst was 1.6 times more than that of MEA with the unmodified electrocatalyst.

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Simultaneous sulfonation and reduction of graphene oxide as highly efficient supports for metal nanocatalysts

Cited by 107 publications

References 41 publications

Carbon nanotube template synthesis of hierarchical NiCoO2 composite for non-enzyme glucose detection

Carbon nanotube template synthesis of hierarchical NiCoO2 composite for non-enzyme glucose detection

Polymer Nanocomposite Membranes of Sulfonated Poly(Styrene‐Isobutylene‐Styrene) With Sulfonated Graphene Oxide for Fuel Cell and Protective Clothing Applications

Fabrication of MEA based on sulfonic acid functionalized carbon supported platinum nanoparticles for oxygen reduction reaction in PEMFCs

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