Reduced graphene oxide as a water, carbon dioxide and oxygen barrier in plasticized poly(vinyl chloride) films

Huynh, Ngoc Minh; Boeva, Zhanna A.; Smått, Jan‐Henrik; Pesonen, Markus; Lindfors, Tom

doi:10.1039/c8ra03080d

Cited by 32 publications

(8 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The other prominent peak appears at around 2670 cm −1 and is referred to as 2D band (also referred to as the G’ band), which arises from lattice vibrations when first order processes activate another phonon [48]. In case of rGO (HYD), additional two peaks clearly appear at 2910 and 3180 cm −1 which are referred to as D+G and 2D’ bands [49], respectively. This pronounced D+G combination peak strongly supports the presence of higher disorder in the rGO (HYD), compared to rGO (DMF).…”

Section: Resultsmentioning

confidence: 99%

Electrocatalytical Application of Platinum Nanoparticles Supported on Reduced Graphene Oxide in PEM Fuel Cell: Effect of Reducing Agents of Dimethlyformamide or Hydrazine Hydrate on the Properties

2021

View full text Add to dashboard Cite

Two kinds of reduced graphene oxide (rGO) were synthesized with the reducing agents of either dimethylformamide (DMF) or hydrazine hydrate (HYD). The decoration of platinum nanoparticles (Pt NPs) over these materials was provided by microwave irradiation (MWI) method. Detailed physical and electrochemical measurements were carried out. Based on the electrochemical results of both catalysts, it is not surprising the achievement of higher electrochemical active surface area (ECSA), higher oxygen reduction reaction (ORR) activity, higher electron transfer number, lower charge transfer resistance and higher fuel cell performance with the Pt/rGO (DMF) catalyst which surpasses Pt/rGO (HYD) in many ways.

show abstract

Section: Resultsmentioning

confidence: 99%

Electrocatalytical Application of Platinum Nanoparticles Supported on Reduced Graphene Oxide in PEM Fuel Cell: Effect of Reducing Agents of Dimethlyformamide or Hydrazine Hydrate on the Properties

2021

View full text Add to dashboard Cite

show abstract

“…Figure 1e,f 36 However, variations in the intensities completely correlate with Co/Co 3 O 4 -rGO, and interestingly the GO diffraction peak (002) changes to rGO and is shifted from 16.2 to 24.4. This demonstrates that the interlayer spacing of rGO is substantially smaller than that of GO and extremely near to that of graphite (0.335 nm), 37 impeding the interlayer diffusion of water and gaseous and ionic species. Reduction increased the electrical conductivity by more than 8 orders of magnitude from 8106 S cm −1 (GO) to 140−220 S cm −1 (rGO), which is in good agreement with the conductivity of 298 S cm −1 reported for rGO.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

Cobalt/Cobalt Oxide Nanorods-Decorated Reduced Graphene Oxide (Co/Co₃O₄-rGO) for Enhanced Electrooxidation of Glycerol

Sapner,

Tanwade,

Munde

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Reduced graphene oxide with cobalt/cobalt oxide (Co/Co 3 O 4 -rGO) nanorod decorations was made by using a chemical synthesis process. The as-synthesized Co/Co 3 O 4 -rGO, reduced graphene oxide (rGO), and cobalt/cobalt oxide (Co/Co 3 O 4 ) nanocomposite were tested for electrocatalytic activity toward the electrooxidation of glycerol in 1 M KOH solution and oxygen evolution reaction simultaneously. The as-synthesized electrocatalytic system was characterized by various techniques, including electrochemical (cyclic voltammetry, electrochemical impedance spectroscopy, and i−t chronoamperometry), spectroscopic (Fourier transform infrared, Raman, and X-ray photoelectron spectroscopy), and morphological (scanning electron spectroscopy and transmission electron microscopy) analyses. Transmission electron microscopy analysis of the Co/Co 3 O 4 -rGO nanocomposite showed an average size of ∼36 nm of Co/Co 3 O 4 on rGO. The electrochemical studies exhibited that Co/Co 3 O 4 -rGO showed excellent electrocatalytic performance compared to those of rGO and Co 3 O 4 individually. Among these, Co/Co 3 O 4 -rGO showed the smallest onset potential (∼1.42 V vs RHE), lowest Tafel slope (56 mV dec −1 ), lower charge-transfer resistance R ct (600 Ω), and higher stability than Co 3 O 4 and rGO. High-performance liquid chromatography analysis confirmed the formation of formic acid with conversion after 5, 15, and 20 h (∼13.43, 41.93, and 59.44%, respectively) and demonstrated higher Faradaic efficiency (∼63%) toward oxidative product (i.e., formic acid) formation. The improved electrochemical performance of rGO after the decoration of Co/Co 3 O 4 on the GO surface reflected that Co/Co 3 O 4 -rGO has good structural and potential stability than Co 3 O 4 nanoparticles and rGO substrate toward glycerol electrooxidation.

show abstract

“…This shift confirmed the reaggregation of the rGO layers forming the π–π interaction between stacks. The reduction to rGO reestablished an sp2 carbon network that resembled that of graphene, but also caused defects to form in rGO [35]. This was shown by the broad band of the diffraction in rGO and rGO-PEDOT:PSS compared to the sharp peak in GO and GO-PEDOT:PSS.…”

Section: Resultsmentioning

confidence: 99%

Solid-State rGO-PEDOT:PSS Transducing Material for Cost-Effective Enzymatic Sensing

2019

View full text Add to dashboard Cite

Performance of a sensing device is dependent on its construction material, especially for components that are directly involved in transporting and translating signals across the device. Understanding the morphology and characteristics of the material components is therefore crucial in the development of any sensing device. This work examines the morphological and electrochemical characteristics of reduced graphene oxide interspersed with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (rGO-PEDOT:PSS) used as a transducer material deposited on a commercially available screen-printed carbon electrode (SPCE). Electron microscopy shows that PEDOT:PSS is interspersed between rGO layers. Raman and XRD analyses suggest that the graphene crystallinity in GO-PEDOT:PSS and rGO-PEDOT:PSS remains intact. Instead, PEDOT:PSS undergoes a change in structure to allow PEDOT to blend into the graphene structure and partake in the π-π interaction with the surface of the rGO layers. Incorporation of PEDOT:PSS also appears to improve the electrochemical behavior of the composite, leading to a higher peak current of 1.184 mA, as measured by cyclic voltammetry, compared to 0.522 mA when rGO is used alone. The rGO-PEDOT:PSS transducing material blended with glucose oxidase was tested for glucose detection. The sensitivity of glucose detection was shown to be 57.3 µA/(mM·cm2) with a detection limit of 86.8 µM.

show abstract

Reduced graphene oxide as a water, carbon dioxide and oxygen barrier in plasticized poly(vinyl chloride) films

Abstract: A 10 μm-thick reduced graphene oxide barrier layer efficiently blocks water, carbon dioxide and oxygen diffusion through plasticized PVC.

Cited by 32 publications

References 77 publications

Electrocatalytical Application of Platinum Nanoparticles Supported on Reduced Graphene Oxide in PEM Fuel Cell: Effect of Reducing Agents of Dimethlyformamide or Hydrazine Hydrate on the Properties

Electrocatalytical Application of Platinum Nanoparticles Supported on Reduced Graphene Oxide in PEM Fuel Cell: Effect of Reducing Agents of Dimethlyformamide or Hydrazine Hydrate on the Properties

Cobalt/Cobalt Oxide Nanorods-Decorated Reduced Graphene Oxide (Co/Co₃O₄-rGO) for Enhanced Electrooxidation of Glycerol

Solid-State rGO-PEDOT:PSS Transducing Material for Cost-Effective Enzymatic Sensing

Contact Info

Product

Resources

About

Reduced graphene oxide as a water, carbon dioxide and oxygen barrier in plasticized poly(vinyl chloride) films

Abstract: A 10 μm-thick reduced graphene oxide barrier layer efficiently blocks water, carbon dioxide and oxygen diffusion through plasticized PVC.

Cited by 32 publications

References 77 publications

Electrocatalytical Application of Platinum Nanoparticles Supported on Reduced Graphene Oxide in PEM Fuel Cell: Effect of Reducing Agents of Dimethlyformamide or Hydrazine Hydrate on the Properties

Electrocatalytical Application of Platinum Nanoparticles Supported on Reduced Graphene Oxide in PEM Fuel Cell: Effect of Reducing Agents of Dimethlyformamide or Hydrazine Hydrate on the Properties

Cobalt/Cobalt Oxide Nanorods-Decorated Reduced Graphene Oxide (Co/Co3O4-rGO) for Enhanced Electrooxidation of Glycerol

Solid-State rGO-PEDOT:PSS Transducing Material for Cost-Effective Enzymatic Sensing

Contact Info

Product

Resources

About

Cobalt/Cobalt Oxide Nanorods-Decorated Reduced Graphene Oxide (Co/Co₃O₄-rGO) for Enhanced Electrooxidation of Glycerol