Spongy nitrogen-doped activated carbonaceous hybrid derived from biomass material/graphene oxide for supercapacitor electrodes

Gharehkhani, Samira; Shirazi, Seyed Farid Seyed; Jahromi, Siamak Pilban; Sookhakian, M.; Baradaran, S.; Yarmand, Hooman; Oshkour, Azim Ataollahi; Kazi, S.N.; Basirun, Wan Jefrey

doi:10.1039/c5ra01525a

Cited by 61 publications

(27 citation statements)

References 62 publications

(65 reference statements)

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“…4 presents the D and G bands of coated and uncoated GNP in Raman spectra. D-band (sp 3 ) at around 1360 cm À1 is due to the defects, disorder, impurities etc., present in the samples whiles G-band (sp 2 ) at 1580 cm À1 corresponds to the characteristic peak of most of the carbon related materials due to the in-plane vibration of carbon atoms [40,41]. After acid treatment and coating process it is obvious that G peak shifted to higher energy of 1597 cm À1 .…”

Section: Data Processingmentioning

confidence: 95%

Graphene nanoplatelets–silver hybrid nanofluids for enhanced heat transfer

Yarmand

Gharehkhani

Ahmadi

et al. 2015

Energy Conversion and Management

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302

105

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Section: Data Processingmentioning

confidence: 95%

Graphene nanoplatelets–silver hybrid nanofluids for enhanced heat transfer

Yarmand

Gharehkhani

Ahmadi

et al. 2015

Energy Conversion and Management

Self Cite

302

105

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“…Since the thermal conductivity of metal and carbon based nano-particles are significantly higher than the conventional base-fluids, their suspension can significantly increase the effective thermal properties of the working fluids [13][14][15]. Recently along this line, a new class of fluid mixtures containing nanostructures has been introduced to overcome the issues caused by low thermal conductivity of coolants [16][17][18]. After introducing nanofluids by Choi [19], many scientists studied the effect of nanoparticles loading on the enhancement of effective thermal conductivity and heat transfer rates of various base-fluids.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ethylene glycol-treated Graphene Nanoplatelets with one-pot, microwave-assisted functionalization for use as a high performance engine coolant

Amiri

Sadri

Shanbedi

et al. 2015

Energy Conversion and Management

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“…The XPS wide spectra of pristine CNT, EDTA and DTPAtreated samples are shown in Figure 2a, b and c, respectively. It can be seen that C 1 s and O 1 s peaks appear at ͠ 284.5 eV and 531.8 eV 40,41 . Based on results, while pristine CNT presents a weak peak of oxygen, the intensity of O 1 s peak growths considerably in EDTA-and DTPA-treated CNT samples.…”

Section: X-ray Photoelectron Spectroscopy (Xps)mentioning

confidence: 98%

Cadmium ion sorption from aqueous solutions by high surface area ethylenediaminetetraacetic acid- and diethylene triamine pentaacetic acid-treated carbon nanotubes

et al. 2015

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A novel and rapid microwave-assisted approach along with Friedel-Crafts acylation has been successfully introduced for functionalization of carbon nanotubes (CNT) via aliphatic and aromatic carboxylic acids. This green and efficient route may play an essential role for realizing miscellaneous functionalizations of CNT, which were successfully functionalized via ethylenediaminetetraacetic acid (EDTA) and diethylene triamine pentaacetic acid (DTPA). Qualitative (FT-IR) and quantitative (TGA, Raman, XPS) characterizations have been employed to investigate the degree of functionalization. The N 2 adsorption isotherm shows the significant increases of 270% and 262% in specific surface area in the low partial pressure region after functionalization of CNT with EDTA and DTPA, respectively, which resulted from eliminating the tube ends or caps. By looking at the potential of EDTA and DTPA for sequestering metal ions, EDTA-& DTPA-treated CNT were used to evaluate the aqueous cadmium (II) adsorption efficiency. Then, the effects of solution temperature, pH and contact time on the adsorption of Cd 2+ ions onto the treated samples and pristine CNT were investigated. The adsorption performance of Cd 2+ ions by functionalized samples was illustrated a dramatic growth as compared with the pristine sample, which was effectively pH dependent. The pseudo second-order model precisely captured the kinetic analyses of adsorption.This study suggested that the functionalization method not only enhanced the effective surface area including active 2 adsorption sites on CNT structure, but also decreased the functionalization time and cost significantly and proposed a promising material for capacitive deionization.Eliminating heavy metals such as lead, cadmium and arsenic from industrial wastewater is a vital environmental parameter 1-3 . It is obvious that most of the heavy metals are non-degradable and they aggregate in different parts of animals and plants, therefore they should be eliminated from industrial wastewater. Cadmium (II) ions as a heavy metal ion is one of the major contaminants of groundwater and surface water, which the metal plating industry play a key role in its production 4, 5 . They aggregate easily in the environment elements such as food chain due to the lack of biodegradability and different diseases such as osteoporosis and anaemia are caused by this heavy metal ion 4, 6-8 .Due to their desirable electrical, mechanical, thermal and chemical properties 9-13 , carbon nanotubes (CNT) are promising material with numerous applications 14 such as hydrogen storage 15, 16 , catalyst supports 17, 18 , chemical sensors 19, 20 etc. As an especial applications, CNT demonstrated an excellent potential for the removal of different heavy metals and many kinds of pollutants from water. CNTs have a large surface area, small hollow, layered structures and a special potential to establish π-π electrostatic interactions 21, 22 .By looking at abovementioned characteristics, CNTs have also illustrated superb adsorption efficiencies and...

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Spongy nitrogen-doped activated carbonaceous hybrid derived from biomass material/graphene oxide for supercapacitor electrodes

Abstract: A nitrogen doped and activated material with spongy-like structure containing a low cost carbon derived from the waste agricultural material and graphene oxide is synthesized via facile thermal treatment for supercapacitor applications.

Cited by 61 publications

References 62 publications

Graphene nanoplatelets–silver hybrid nanofluids for enhanced heat transfer

Graphene nanoplatelets–silver hybrid nanofluids for enhanced heat transfer

Synthesis of ethylene glycol-treated Graphene Nanoplatelets with one-pot, microwave-assisted functionalization for use as a high performance engine coolant

Cadmium ion sorption from aqueous solutions by high surface area ethylenediaminetetraacetic acid- and diethylene triamine pentaacetic acid-treated carbon nanotubes

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