Efficient electrocatalytic performance of thermally exfoliated reduced graphene oxide-Pt hybrid

Antony, Rajini P.; Preethi, L. K.; Gupta, Bhavana; Mathews, Tom; Dash, S.; Tyagi, A.K.

doi:10.1016/j.materresbull.2015.04.015

Cited by 56 publications

(30 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure a) is the Raman spectrum and its corresponding deconvolution of rGO. The signal at 1347.36 cm −1 is assigned to the D‐band, attributed to defects in the graphitic edges due to sp 3 (C−O) and sp 2 (C=O) hybridization . The D*, D′ and D′′ signals in the 800 to 1750 cm −1 interval are attributed to oxygen contained in the graphitic lattice of rGO .…”

Section: Resultsmentioning

confidence: 99%

Functionalizing Reduced Graphene Oxide with Ru‐Organometallic Compounds as an Effective Strategy to Produce High‐Performance Pt Nanocatalysts for the Methanol Oxidation Reaction

Siller-Ceniceros¹,

Sánchez-Castro²,

Morales-Acosta

et al. 2019

ChemElectroChem

View full text Add to dashboard Cite

An efficient route to chemically functionalize reduced graphene oxide (rGO) with ruthenium organometallic compounds and the subsequent anchorage of Pt nanoparticles is reported. Two organometallic complexes, [(η6‐C6H5OCH2CH2OH) RuCl2]2 (Ru‐dim) and [(η6‐C6H4(CHMe2)Me)RuCl2]2 (Ru‐cym), as well as commercial RuCl3 ⋅ XH2O (Ru‐com) have been synthetized an used as functionalizing agents. By implementing a conventional polyol synthesis method, the Pt/rGORu‐dim, Pt/rGORu‐cym, Pt/rGORu‐com and Pt/rGO nanocatalysts have been synthetized. Characterization by XRD indicates that the presence of Ru leads to the formation of Pt−Ru alloyed phases due to overlapping of Pt fcc and Ru hcp reflections. When characterized for the methanol oxidation reaction (MOR) in acid media, Pt/rGORu‐dim reached a mass current density of 491.49 mA mgPt−1, higher than those generated by the other nanocatalysts. The results show that the functionalization of rGO with Ru‐dim remarkably increases the catalytic activity of Pt for the MOR, suggesting Pt−Ru metal−metal interactions that promotes the anodic reaction.

show abstract

Section: Resultsmentioning

confidence: 99%

Functionalizing Reduced Graphene Oxide with Ru‐Organometallic Compounds as an Effective Strategy to Produce High‐Performance Pt Nanocatalysts for the Methanol Oxidation Reaction

Siller-Ceniceros¹,

Sánchez-Castro²,

Morales-Acosta

et al. 2019

ChemElectroChem

View full text Add to dashboard Cite

show abstract

“…The base line for the oxidation peak became stepper with increasing the scan rate and that is why a spurious value (0. 25 5À on ERGNO/GC electrode. However, the extent of the reversibility for the same redox couple increased on ERGNO/GC compared to bare GC.…”

Section: Resultsmentioning

confidence: 99%

“…The graphene materials have been emerging in the electrocatalysis and electroanalysis as the potent surface modifying agents for the working electrodes, where the presence of graphenated materials selectively increased the rate of electron transfer and sensitivity of determination of the analyte [16][17][18][19][20][21][22][23][24][25]. However, the aqueous electrochemistry of the actinides on graphenated materials is yet unexplored.…”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide: Is it a promising catalyst for the electrochemistry of [UO2(CO3)3]4−/[UO2(CO3)3]5−?

Guin

Ambolikar

Kamat

2015

Electrochimica Acta

View full text Add to dashboard Cite

“…Agglomeration of reduced GO sheets is because of removal of oxygenated species upon reduction of GO. The corrugated morphology suggests the intrinsic nature of graphene, because the 2D membrane structure would be thermodynamically stable via blending [48]. The morphology and structure of GO coated on copper and GO coated on copper and reduced by NaBH 4 was investigated through field emission scanning electron microscope (FESEM).…”

Section: Characterization Of Coatingmentioning

confidence: 99%

Section: Characterization Of Coatingmentioning

confidence: 99%

Graphene Coating on Copper by Electrophoretic Deposition for Corrosion Prevention

et al. 2017

View full text Add to dashboard Cite

Abstract:In this paper, we report the use of a simple and inexpensive electrophoretic deposition (EPD) technique to develop thin, uniform, and transparent graphene oxide (GO) coating on copper (Cu) substrate on application of 10 V for 1 s from an aqueous suspension containing 0.03 wt % graphene oxide. GO was partially reduced during the EPD process itself. The GO coated on Cu was completely reduced chemically by using sodium borohydride (NaBH 4 ) solution. The coatings were characterized by field emission scanning electron microscope (FESEM), Raman spectroscopy, Fourier-transform infrared spectroscopy (FTIR), XRD, and UV/VIS spectrophotometry. Corrosion resistance of the coatings was evaluated by electrochemical measurements under accelerated corrosion condition in 3.5 wt % NaCl solution. The GO coated on Cu and chemically reduced by NaBH 4 showed more positive corrosion potential (E corr ) (−145.4 mV) compared to GO coated on Cu (−182.2 mV) and bare Cu (−235.3 mV), and much lower corrosion current (I corr ) (7.01 µA/cm 2 ) when compared to 15.375 µA/cm 2 for bare Cu indicating that reduced GO film on copper exhibit enhanced corrosion resistance. The corrosion inhibition efficiency of chemically reduced GO coated Cu was 54.40%, and its corrosion rate was 0.08 mm/year as compared to 0.18 mm/year for bare copper.

show abstract

Efficient electrocatalytic performance of thermally exfoliated reduced graphene oxide-Pt hybrid

Cited by 56 publications

References 45 publications

Functionalizing Reduced Graphene Oxide with Ru‐Organometallic Compounds as an Effective Strategy to Produce High‐Performance Pt Nanocatalysts for the Methanol Oxidation Reaction

Functionalizing Reduced Graphene Oxide with Ru‐Organometallic Compounds as an Effective Strategy to Produce High‐Performance Pt Nanocatalysts for the Methanol Oxidation Reaction

Reduced Graphene Oxide: Is it a promising catalyst for the electrochemistry of [UO2(CO3)3]4−/[UO2(CO3)3]5−?

Graphene Coating on Copper by Electrophoretic Deposition for Corrosion Prevention

Contact Info

Product

Resources

About