The synthesis of multi-walled carbon nanotubes (MWNTs) by catalytic pyrolysis of the phenol-formaldehyde resins

Stamatin, I.; Morozan, Adina; Dumitru, Anca; Ciupină, V.; Prodan, G.; Niewolski, J.; Figiel, H.

doi:10.1016/j.physe.2006.10.013

Cited by 107 publications

(48 citation statements)

References 22 publications

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“…The graph shows that the intensity of the peaks is in the range of 25.0-25.9. The results were found to be almost similar to the results reported by for multi-walled CNTs prepared by Bhattacharji et al (2011) by pyrolysis of turpentine oil (2h = 25.6) and with Ioan Stalin et al (2007),who prepared CNTs by catalytic pyrolysis of phenol formaldehyde resin (2h = 26.2). This confirms the formation of multi-walled CNTs which proves the existence of CNTs in the sample.…”

Section: Xrd Resultssupporting

confidence: 89%

Synthesis and characterization of functionalized CNTs using soya and milk protein

et al. 2013

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Nanotechnology is the study of the phenomenon and manipulation of matter at atomic and molecular scale to enhance their older property and generate several new properties. Carbon nanotubes (CNTs) are one of the most commonly mentioned building blocks of nanotechnology. CNTs are very prevalent in today's world of medical research and are being highly researched in the fields of efficient drug delivery and bio sensing methods for disease treatment and health monitoring. There are number of methods for synthesizing CNTs. This is a biological method for synthesis of CNTs in which protein is used as carbon source and amino acids present in protein form complex with metal salt. The CNTs synthesized are then characterized and functionalized using techniques such as transmission electron microscopy, Fourier transform infrared, nuclear magnetic resonance, ultra-violet visible spectroscopy, X-ray diffraction, etc. The properties of the synthesized CNTs are studied with the help of techniques such as thermo-gravimetric analysis, differential thermal analysis, and vibrating sample magnetometer, etc.

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Section: Xrd Resultssupporting

confidence: 89%

Synthesis and characterization of functionalized CNTs using soya and milk protein

et al. 2013

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“…[ 48,51,53 ] For the catalyst electrode (bottom trace), the data are dominated by the (002) and (100) refl ections from the N-CNTs (marked by * and #, respectively), although the (311) and (400) NiCo 2 O 4 refl ections are also distinguishable. [ 54,55 ] The conclusion is thus that the nanorods exist in a polycrystalline spinel NiCo 2 O 4 structure, and that they are well-dispersed and well-anchored onto the N-CNTs.…”

Section: The Electrocatalyst Electrodementioning

confidence: 97%

Toward a Low‐Cost Artificial Leaf: Driving Carbon‐Based and Bifunctional Catalyst Electrodes with Solution‐Processed Perovskite Photovoltaics

Sharifi

Larsen

Wang

et al. 2016

Advanced Energy Materials

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countries, where many users still are not connected to the electric grid, it is clear that alternative energy technologies are needed that can contribute with renewable fuels in signifi cant amounts. In this challenging context, researchers have found inspiration in the process of natural photosynthesis when they attempt to convert the plentiful, but intermittent, solar irradiation incident on the Earth's surface into a storable fuel, using a range of methods commonly coined as artifi cial photosynthesis. [1][2][3][4][5][6][7][8][9] One emerging technology to achieve such solar-to-fuel conversion is the "artifi cial-leaf device", which essentially comprises an assembly of photovoltaics (PVs) that drives two electrocatalyst electrodes immersed in water. [10][11][12] This device produces molecular hydrogen and oxygen using only sunlight and water as the input, and during the past few years its performance has improved drastically, with the current record for the solar-to-hydrogen (STH) conversion efficiency being above 10%. [13][14][15][16] It is, however, clear that in order to become truly sustainable and useful, the artifi cial-leaf device should comprise solely, or predominantly, earth-abundant materials and be produced with scalable and low-cost methods. Moreover, from a processing and transport point of view, it is preferable if it can be lightweight and fl exible.Perovskite materials [ 14,[17][18][19][20][21] have recently emerged as an interesting option to incumbent silicon [ 15,20 ] and copperindium-gallium-selenide [ 16,20 ] for the active material in PVs, due to a high and quickly improving solar-to-electric (STE) conversion effi ciency and an opportunity for cost-effi cient, solutionbased fabrication. [ 17,18,21,23 ] The electrocatalyst electrode comprises a catalytically active material deposited on the surface of a current collector. Commonly employed materials for the current collector are bulk or porous metals, [ 15 ] whereas a popular choice for the catalyst is various types of metal-oxides. [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] From a system-cost and practicality perspective, it is desirable to develop a functional lightweight and low-cost current collector and to identify a catalyst that is bifunctional in that it can drive the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) in the same water solution. [ 14,[39][40][41][42][43][44] Here, we present an artifi cial-leaf device that delivers an STH effi ciency of 6.2% and a Faradaic H 2 evolution effi ciency of 100%. We mention that our device is not fully integrated at this stage, Molecular hydrogen can be generated renewably by water splitting with an "artifi cial-leaf device", which essentially comprises two electrocatalyst electrodes immersed in water and powered by photovoltaics. Ideally, this device should operate effi ciently and be fabricated with cost-effi cient means using earth-abundant materials. Here, a lightweight electrocatalyst electrode, comprising large surface-area NiCo 2 O 4 nano...

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“…1] is one of the organometallic compounds that can be used as a catalytic agent for carbon graphitization [4,16]. This additive is found as a solid orange powder, insoluble in water but soluble in certain organic liquids.…”

Section: Catalytic Graphitizationmentioning

confidence: 99%

Role of catalytic agents and processing parameters in the graphitization process of a carbon-based refractory binder

Bitencourt

Luz

Pagliosa³

et al. 2015

Ceramics International

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The synthesis of multi-walled carbon nanotubes (MWNTs) by catalytic pyrolysis of the phenol-formaldehyde resins

Cited by 107 publications

References 22 publications

Synthesis and characterization of functionalized CNTs using soya and milk protein

Synthesis and characterization of functionalized CNTs using soya and milk protein

Toward a Low‐Cost Artificial Leaf: Driving Carbon‐Based and Bifunctional Catalyst Electrodes with Solution‐Processed Perovskite Photovoltaics

Role of catalytic agents and processing parameters in the graphitization process of a carbon-based refractory binder

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