X-ray photoelectron spectroscopic study of nitrogen incorporated amorphous carbon films embedded with nanoparticles

Ishpal,; Panwar, O. S.; Kumar, Mahesh; Kumar, Sushil

doi:10.1016/j.apsusc.2010.05.075

Cited by 23 publications

(10 citation statements)

References 45 publications

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“…The predominant peak at 284.4 eV was ascribed to the sp 2 graphitic carbon with CC, CH, and CC, and a less intense peak at 285.4 eV was associated with sp 3 CC bonds, respectively. Two weaker peaks at 286.3 and 287.3 eV were attributed to the formation of CN and CN bonds during the pyrolysis of N‐containing polymer . Besides, a very weak peak could be observed at 288.2 eV due to the combination of carbon with oxygen‐containing groups in terms of CO, OC, OCO, and NCO bonds (Figure b) .…”

Section: Resultsmentioning

confidence: 98%

3D Macroporous Nitrogen‐Enriched Graphitic Carbon Scaffold for Efficient Bioelectricity Generation in Microbial Fuel Cells

You

Wang

et al. 2016

Advanced Energy Materials

163

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Microbial fuel cell (MFC) can generate electricity based on oxidation of organic compounds by exoelectogens, giving rise to a promising potential for recovering electrical energy from organic wastewater. The structure and property of anode materials have inherent impact to extracellular electron transfer (EET), an interfacial process that greatly limits bioelectricity production of MFC. Herein, a three dimensional (3D) macroporous nitrogen-enriched graphitic carbon (NGC) scaffold is fabricated from commercially available melamine foam using facile pyrolysis method. The NGC electrode is demonstrated to promote EET efficiently, achieving a power density of 750 mW m −2 based on pure cultured Shewanella oneidensis MR-1 in acetate-feeding MFC.The unique 3D open-cell structure not only offers habitats for colonization of electroactive biofilm up to a maximal density but also provides macroporous architecture for internal mass transfer without concern of bio-blocking and bio-fouling. Additionally, nitrogen incorporation also plays a significant role in enhancing EET, where pyrrolic nitrogen is much more active than graphitic and pyridinic nitrogen as indicated by density functional theory calculation.

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Section: Resultsmentioning

confidence: 98%

3D Macroporous Nitrogen‐Enriched Graphitic Carbon Scaffold for Efficient Bioelectricity Generation in Microbial Fuel Cells

You

Wang

et al. 2016

Advanced Energy Materials

163

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“…3c, d, the AFM images give a value of ~4.3 nm for the thickness of the prepared graphene, which is consistent with the TEM observation. 49,50 The bands at 285.3 and 288.0 eV can be attributed to C-O (or C-N) and O=C-O (carbonates or carboxyl) groups, respectively. products show quite similar peaks as that of pristine CN foam.…”

Section: Resultsmentioning

confidence: 99%

CN foam loaded with few-layer graphene nanosheets for high-performance supercapacitor electrodes

Zhu

Liu

et al. 2015

J. Mater. Chem. A

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Three-dimensional porous carbon-based foams have recently attracted increasing interest owing to their exciting potential in various fields. Herein, hierarchical porous monoliths, CN foam loaded with free few-layer graphene nanosheets, have been prepared. In this method, graphene oxide sheets were firstly loaded on the usual melamine foam that was selected as raw material for CN framework. With a following annealing process in N2 atmosphere, melamine foam was transferred into CN foam; at the same time, graphene oxide sheets were transferred into reduced graphene oxide, forming reduced graphene oxide-CN composite. The loading density of graphene on CN framework can be tuned by the dosage of graphene oxide. The obtained composite monoliths exhibit excellent cycling performance and good rate capacity when used as pseudocapacitive electrode materials. At current density of 0.5 and 10 A/g, the optimized electrode exhibits areal specific capacitance of 1067 and 463 mF/cm 2 with excellent cycling stability. The excellent property can be attributed to the unique macropore structures that endow sufficient space available to interact with the electrolytes, and the pseudocapacitive contribution originated from the nitrogen and oxygen composition. This facile synthesis strategy and the good electrochemical properties suggest the synthesized CN-graphene composites are promising materials for supercapacitor application.Since Hulicova et al prepared nitrogen-doped carbon in 2005 by carbonization of melamine with the assistance of mica, 32, 33 melamine-based polymer such as melamine formaldehyde resine were often selected as raw or assistant

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“…In Figure (d), the curve fitting of O 1s revealed three separate peaks corresponding to FeO, FeOH, and CO bond, respectively . The N 1s peak observed in Figure (e) reflected the existence of CONH bond in PBA‐MNPs composite . The Fe 2p, C 1s, O 1s, and N 1s spectrum not only exhibit the surface chemistry and but also further verify the successful formation of PBA‐MNPs composite.…”

Section: Resultsmentioning

confidence: 94%

Low temperature one‐step synthesis of poly(barbituric acid) functionalized magnetic nanoparticles for removal of heavy metal ions

Lan

Leng

et al. 2014

J of Applied Polymer Sci

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Poly(barbituric acid) functionalized magnetic nanoparticles with excellent adsorption behavior were facilely synthesized through one‐step chemical oxidation polymerization method by using sodium borohydride as the reducing agent. Structure, morphology, and magnetism of the products were thoroughly investigated by means of FTIR, FESEM, EDX, X‐ray photoelectron spectra, thermogravimetric analyzer–differential scanning calorimetry, and vibrating sample magnetometer. The products were of a sphere‐shaped nanostructure with the saturation magnetization value of 7.5 emu g−1, which make them reusable for adsorption application. Removal capability for heavy metal ions were systematically evaluated using Pd (II) and Cu (II) ions as the models. The maximum sorption capacities by applying the Langmuir equation were calculated to be 166.6 mg/g for Cu (II) and 142.8 mg/g for Pb (II). A recycle test revealed that the PBA‐MNPs have above 87.1% for Cu (II) and 82.69% for Pb (II) ion desorption efficiency after the three regeneration cycle process. All the above experimental results demonstrated that barbituric acid‐based material could be used as a possible adsorbent for the efficient removal of heavy metals from aqueous solution. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40957.

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X-ray photoelectron spectroscopic study of nitrogen incorporated amorphous carbon films embedded with nanoparticles

Cited by 23 publications

References 45 publications

3D Macroporous Nitrogen‐Enriched Graphitic Carbon Scaffold for Efficient Bioelectricity Generation in Microbial Fuel Cells

3D Macroporous Nitrogen‐Enriched Graphitic Carbon Scaffold for Efficient Bioelectricity Generation in Microbial Fuel Cells

CN foam loaded with few-layer graphene nanosheets for high-performance supercapacitor electrodes

Low temperature one‐step synthesis of poly(barbituric acid) functionalized magnetic nanoparticles for removal of heavy metal ions

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