scholarly journals Carbons from Biomasic Waste and their Applications

2019 ◽  
Vol 5 (4) ◽  
pp. 59
Author(s):  
Bedia ◽  
Belver
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbons ◽  
Graphene Nanosheets ◽  
Two Dimensional ◽  
One Dimensional ◽  
Carbon Based

Carbon-based materials, such as chars, activated carbons, one-dimensional carbon nanotubes, and two-dimensional graphene nanosheets, have shown great potential for a wide variety of applications[...]

scholarly journals Special Issue on New Carbon Materials from Biomass and Their Applications

2021 ◽  
Vol 11 (6) ◽  
pp. 2453
Author(s):  
Jorge Bedia ◽  
Carolina Belver
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Materials ◽  
Activated Carbons ◽  
Graphene Nanosheets ◽  
Two Dimensional ◽  
Special Issue ◽  
One Dimensional ◽  
New Carbon Materials ◽  
Carbon Based

Carbon-based materials, such as chars, activated carbons, one-dimensional carbon nanotubes, and two-dimensional graphene nanosheets, have shown great potential for a wide variety of applications [...]

scholarly journals Fracture toughness of one- and two-dimensional nanoreinforced cement via scratch testing

2021 ◽  
Vol 379 (2203) ◽  
pp. 20200288 ◽  
Author(s):  
Ange-Therese Akono
Keyword(s):  
Carbon Nanotubes ◽  
Fracture Toughness ◽  
Cement Industry ◽  
Vertical Force ◽  
Two Dimensional ◽  
Scratch Testing ◽  
Helical Carbon Nanotubes ◽  
Reinforced Cement ◽  
Carbon Based Nanomaterials ◽  
Carbon Based

Cement is the most widely consumed material globally, with the cement industry accounting for 8% of human-caused greenhouse gas emissions. Aiming for cement composites with a reduced carbon footprint, this study investigates the potential of nanomaterials to improve mechanical characteristics. An important question is to increase the fraction of carbon-based nanomaterials within cement matrices while controlling the microstructure and enhancing the mechanical performance. Specifically, this study investigates the fracture response of Portland cement reinforced with one- and two-dimensional carbon-based nanomaterials, such as carbon nanofibres, multiwalled carbon nanotubes, helical carbon nanotubes and graphene oxide nanoplatelets. Novel processing routes are shown to incorporate 0.1–0.5 wt% of nanomaterials into cement using a quadratic distribution of ultrasonic energy. Scratch testing is used to probe the fracture response by pushing a sphero-conical probe against the surface of the material under a linearly increasing vertical force. Fracture toughness is then computed using a nonlinear fracture mechanics model. Nanomaterials are shown to bridge nanoscale air voids, leading to pore refinement, and a decrease in the porosity and the water absorption. An improvement in fracture toughness is observed in cement nanocomposites, with a positive correlation between the fracture toughness and the mass fraction of nanofiller for graphene-reinforced cement. Moreover, for graphene-reinforced cement, the fracture toughness values are in the range of 0.701 to 0.717 MPa m . Thus, this study illustrates the potential of nanomaterials to toughen cement while improving the microstructure and water resistance properties. This article is part of a discussion meeting issue ‘A cracking approach to inventing new tough materials: fracture stranger than friction’.

Curvature Elastic Energy Model for Carbon Nanotubes

2014 ◽  
Vol 906 ◽  
pp. 185-189
Author(s):  
Wen Wei Yao
Keyword(s):  
Carbon Nanotubes ◽  
Elastic Energy ◽  
Continuous Model ◽  
Energy Model ◽  
Chemical Characteristics ◽  
Two Dimensional ◽  
Elastic Rod ◽  
One Dimensional ◽  
Rod Theory ◽  
Physical And Chemical

Since carbon nanotubes (CNTs) were discovered, due to their unique and novel physical and chemical characteristics, many studies focus on them. In this article, a two-dimensional (2D) curvature elastic energy model for isotropic tube is presented, and reduced to a one-dimensional (1D) continuous model which is in accordance with Kirchhoff elastic rod theory. The problems remaining to be solved are discussed.

scholarly journals Melamine as a single source for fabrication of mesoscopic 3D composites of N-doped carbon nanotubes on graphene

RSC Advances ◽  
2018 ◽  
Vol 8 (22) ◽  
pp. 12157-12164 ◽  
Author(s):  
Xiao-Ling Yan ◽  
Hua-Fei Li ◽  
Chen Wang ◽  
Bang-Bang Jiang ◽  
Hai-Yan Hu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Two Dimensional ◽  
Single Source ◽  
One Dimensional ◽  
Carbon Structures ◽  
Enhanced Properties

Integration of two-dimensional graphene and one-dimensional carbon nanotubes (CNTs) to create potentially useful 3D mesoscopic carbon structures with enhanced properties relative to the original materials is very desirable.

Distinct interface behaviors of Ni(ii) on graphene oxide and oxidized carbon nanotubes triggered by different topological aggregations

Nanoscale ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 1383-1393 ◽  
Author(s):  
Jianjun Liang ◽  
Ping Li ◽  
Xiaolan Zhao ◽  
Ziyi Liu ◽  
Qiaohui Fan ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Environmental Risks ◽  
Two Dimensional ◽  
Graphene Nanosheet ◽  
One Dimensional ◽  
Oxidized Carbon ◽  
Oxidized Carbon Nanotubes

Although carbon nanotubes can be described as a seamlessly curled graphene nanosheet, two-dimensional graphene oxide (GO) and one-dimensional oxidized carbon nanotubes (OCNTs), especially with coexisting heavy metals, have different fates and environmental risks, such as deposition, degradation and cytotoxicity.

scholarly journals QUASI-ONE DIMENSIONAL FLUIDS THAT EXHIBIT HIGHER DIMENSIONAL BEHAVIOR

2010 ◽  
Vol 24 (25n26) ◽  
pp. 5051-5059 ◽  
Author(s):  
SILVINA M. GATICA ◽  
M. MERCEDES CALBI ◽  
GEORGE STAN ◽  
R. ANDREEA TRASCA ◽  
MILTON W. COLE
Keyword(s):  
Carbon Nanotubes ◽  
Phase Transitions ◽  
Finite Temperature ◽  
Review Paper ◽  
Two Dimensional ◽  
Reduced Dimensionality ◽  
Narrow Channels ◽  
One Dimensional ◽  
Higher Dimensional ◽  
Effective Dimensionality

Fluids confined within narrow channels exhibit a variety of phases and phase transitions associated with their reduced dimensionality. In this review paper, we illustrate the crossover from quasi-one dimensional to higher effective dimensionality behavior of fluids adsorbed within different carbon nanotubes geometries. In the single nanotube geometry, no phase transitions can occur at finite temperature. Instead, we identify a crossover from a quasi-one dimensional to a two dimensional behavior of the adsorbate. In bundles of nanotubes, phase transitions at finite temperature arise from the transverse coupling of interactions between channels.

scholarly journals Synthesis, Properties, and Applications of Low-Dimensional Carbon-Related Nanomaterials

2011 ◽  
Vol 2011 ◽  
pp. 1-21 ◽  
Author(s):  
Ali Mostofizadeh ◽  
Yanwei Li ◽  
Bo Song ◽  
Yudong Huang
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanomaterials ◽  
Experimental Studies ◽  
Structural Features ◽  
Two Dimensional ◽  
One Dimensional ◽  
Synthesis Properties ◽  
Carbon Nanowalls ◽  
Low Dimensional ◽  
Carbon Encapsulated Metal Nanoparticles

In recent years, many theoretical and experimental studies have been carried out to develop one of the most interesting aspects of the science and nanotechnology which is called carbon-related nanomaterials. The goal of this paper is to provide a review of some of the most exciting and important developments in the synthesis, properties, and applications of low-dimensional carbon nanomaterials. Carbon nanomaterials are formed in various structural features using several different processing methods. The synthesis techniques used to produce specific kinds of low-dimensional carbon nanomaterials such as zero-dimensional carbon nanomaterials (including fullerene, carbon-encapsulated metal nanoparticles, nanodiamond, and onion-like carbons), one-dimensional carbon nanomaterials (including carbon nanofibers and carbon nanotubes), and two-dimensional carbon nanomaterials (including graphene and carbon nanowalls) are discussed in this paper. Subsequently, the paper deals with an overview of the properties of the mainly important products as well as some important applications and the future outlooks of these advanced nanomaterials.

scholarly journals Novel carbon-based separation membranes composed of integrated zero- and one-dimensional nanomaterials

2020 ◽  
Vol 8 (3) ◽  
pp. 1084-1090 ◽  
Author(s):  
Fanglei Zhou ◽  
Huynh Ngoc Tien ◽  
Qiaobei Dong ◽  
Weiwei L. Xu ◽  
Bratin Sengupta ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Graphene Oxide ◽  
Water Purification ◽  
One Dimensional ◽  
Separation Membranes ◽  
Graphene Oxide Quantum Dots ◽  
Ultrathin Membranes ◽  
Carbon Based

Zero-dimensional graphene oxide quantum dots and one-dimensional carbon-nanotubes were integrated to form ultrathin membranes for CO2 capture and water purification.

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