Potential Applications of Carbon Nanotubes and Graphene: Marking the Direction of Scientific Research

2013 ◽  
Author(s):  
Goio Etxebarria ◽  
Mikel Gómez-Uranga ◽  
Jon Mikel Zabala Iturriagagoitia ◽  
Jon Barrutia
Keyword(s):  
Carbon Nanotubes ◽  
Scientific Research ◽  
Potential Applications

ORIENTATING MANIPULATION OF CYLINDRICAL PARTICLES WITH OPTICAL TWEEZERS

2008 ◽  
Vol 17 (04) ◽  
pp. 387-394 ◽  
Author(s):  
XIUDONG SUN ◽  
XUECONG LI ◽  
JIANLONG ZHANG
Keyword(s):  
Escherichia Coli ◽  
Carbon Nanotubes ◽  
Laser Beam ◽  
Optical Tweezers ◽  
Optical Trap ◽  
Polarization Direction ◽  
Beam Shape ◽  
E Coli ◽  
Potential Applications ◽  
Cylindrical Particles

Orientating manipulations of cylindrical particles were performed by optical tweezers. Vertical and horizontal manipulations of Escherichia coli (E. coli) were carried out by changing the trapping depth and the focused laser beam shape. It was found that carbon nanotubes bundles (CNTBs) could be rotated in the linear polarized optical trap until it orientated its long axis along the linear polarization direction of the laser beam. However, E.coli could not be orientated in this way. Corresponding mechanisms were discussed based on the anisomeric electric characters of CNTBs. These orientation technologies of cylindrical objects with optical trap have potential applications in assembling nano-electric devices.

Modeling, Design, and Applications of the Gas Sensors Based on Graphene and Carbon Nanotubes

2017 ◽  
pp. 920-946
Author(s):  
Rafael Vargas-Bernal
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensors ◽  
Carbon Nanomaterials ◽  
Gas Sensing ◽  
Prospective Analysis ◽  
The Third ◽  
Potential Applications ◽  
Technical Advances ◽  
The Impact

Gas sensing continues attracting research communities due to its potential applications in the sectors military, industrial and commercial. A special emphasis is placed on the use of carbon nanomaterials such as carbon nanotubes and graphene, as sensing materials. The chapter will be divided as follows: In the first part, a description of the main topologies and materials (carbon nanomaterials plus polymers, metals, ceramics or combinations between these groups) used to fabricate gas sensors based on graphene and carbon nanotubes that are operated by conductance or resistance electrical, is realized. Next, different mathematical models that can be used to simulate gas sensors based on these materials are presented. In the third part, the impact of the graphene and carbon nanotubes on gas sensors is exemplified with technical advances achieved until now. Finally, it is provided a prospective analysis on the role of the gas sensors based on carbon nanomaterials in the next decades.

scholarly journals Biosourced Polysaccharide-Based Superabsorbents

2020 ◽  
Vol 1 (1) ◽  
pp. 51-79
Author(s):  
Ludovic Llanes ◽  
Pascal Dubessay ◽  
Guillaume Pierre ◽  
Cédric Delattre ◽  
Philippe Michaud
Keyword(s):  
Water Treatment ◽  
Scientific Research ◽  
Environmentally Friendly ◽  
Dry Weight ◽  
Synthetic Polymers ◽  
Synthesis Methods ◽  
New Materials ◽  
Potential Applications ◽  
Industrial Demand ◽  
Agriculture Water

In the last decades, many studies have been conducted on new materials to meet a growing industrial demand and to move scientific research forward. Superabsorbents are good examples of materials that have generated special attention in many fields for their ability to absorb and retain water up to 1000 times of their dry weight. They found many applications in hygiene products and other products, for a fast growing market of USD 9.58 Billion in 2019. Most of them are composed of synthetic polymers, which are often not environmentally friendly. Therefore, natural superabsorbents and particularly those based on polysaccharides have received a recent increased interest for their biodegradability, biocompatibility, and renewability. This review focuses on polysaccharide-based superabsorbents, on their properties, synthesis methods, and characterization. Their potential applications in many fields, such as biomedical and hygiene, agriculture, water treatment, and the building sector, are also reported with an interest in products already marketed.

Aligned carbon nanotube growth under oxidative ambient

2001 ◽  
Vol 16 (11) ◽  
pp. 3107-3110 ◽  
Author(s):  
Anyuan Cao ◽  
Xianfeng Zhang ◽  
Cailu Xu ◽  
Ji Liang ◽  
Dehai Wu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Nanotubes ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Chemical Vapor Deposition Method ◽  
Deposition Method ◽  
Tubular Structures ◽  
Potential Applications ◽  
Carbon Nanotube Growth ◽  
Nanotube Growth

Carbon nanotubes (CNTs) are always produced under a reductive ambient with hydrogen present using the chemical vapor deposition method. Oxidative media, such as carbon dioxide and oxygen, could damage the tubular structures by opening the nanotube ends or etching the tube walls. Here we report the synthesis of aligned defective, but clean, CNTs in the presence of water vapor. The tube walls were found broken as well as the tube ends. CNTs with a large amount of exposed broken sites on their tube walls have potential applications in many areas such as energy storage.

Molecular Dynamics Simulation of Bi-Carboxyl Sidewall Functionalized Single-Wall Carbon Nanotubes in Water

2015 ◽  
Vol 1131 ◽  
pp. 106-109
Author(s):  
Shongpun Lokavee ◽  
Chatchawal Wongchoosuk ◽  
Teerakiat Kerdcharoen
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Md Simulations ◽  
Dynamics Simulation ◽  
Single Wall Carbon Nanotubes ◽  
First Principles Calculations ◽  
Carboxylic Groups ◽  
Potential Applications ◽  
Walled Carbon Nanotubes ◽  
Defective Sites

Functionalized single-walled carbon nanotubes (f-SWNTs) have attracted great interest due to their enhancement of SWNT properties leading to an increase in potential applications beyond those of pristine SWNT. In this work, we have investigated the behavior of open-end (9,0) bi-carboxyl sidewall functionalized SWNTs in water using molecular dynamics (MD) technique within GROMACS software package based on the OPLS force fields with modified charges obtained from the first principles calculations. The model tubes including perfect and defective nanotubes covalently functionalized by bi-carboxylic groups on different sidewall surface orientation were fully optimized by B3LYP/6-31G(d,p). The simulations were performed at the constant volume and temperature in a rectangular box with periodic boundary conditions in which each system contains one model tube and ~1680 water molecules. The results form MD simulations showed that functionalization on the central carbon atom in the (C1,C ́1)SW-defective sites strongly affects on the dynamic behavior of CNT in water. Results showed that the hydrophilic behavior of the functionalized SWNT has been improved over the pristine and defective nanotubes.

scholarly journals The Application of Multi-Walled Carbon Nanotubes in Bone Tissue Repair Hybrid Scaffolds and the Effect on Cell Growth In Vitro

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 230 ◽  
Author(s):  
Jie Xu ◽  
Xueyan Hu ◽  
Siyu Jiang ◽  
Yiwei Wang ◽  
Roxanne Parungao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Bone Tissue ◽  
Optimal Growth ◽  
Bone Tissue Regeneration ◽  
Proliferation And Differentiation ◽  
Potential Applications ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Hybrid Scaffolds

In this study, composite scaffolds with different multi-walled carbon nanotubes (MWCNTs) content were prepared by freeze-drying. These scaffolds were characterized by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), porosity, hydrophilicity, mechanical strength, and degradation. The MWCNTs scaffolds were structurally sound and had porous structures that offered ample space for adherence, proliferation, and differentiation of MC3T3-E1 cells, and also supported the transport of nutrients and metabolic waste. CS/Gel/nHAp/0.3%MWCNTs scaffolds provided the best outcomes in terms of scaffold porosity, hydrophilicity, and degradation rate. However, CS/Gel/nHAp/0.6%MWCNTs scaffolds were found to support the optimal growth, homogenous distribution, and biological activity of MC3T3-E1 cells. The excellent properties of CS/Gel/nHAp/0.6%MWCNTs scaffolds for the adhesion, proliferation, and osteogenesis differentiation of MC3T3-E1 cells in vitro highlights the potential applications of this scaffold in bone tissue regeneration.

Adsorption of Fluoride by Aligned Carbon Nanotubes Supported Ceria Nanoparticles

2007 ◽  
Vol 121-123 ◽  
pp. 1221-1224 ◽  
Author(s):  
Ze Chao Di ◽  
Yan Hui Li ◽  
Xian Jia Peng ◽  
Zhao Kun Luan ◽  
Ji Liang
Keyword(s):  
Heat Treatment ◽  
Carbon Nanotubes ◽  
Drinking Water ◽  
Carbon Nanotube ◽  
Fluoride Concentration ◽  
Ceria Nanoparticles ◽  
Adsorption Effect ◽  
Fluoride Adsorption ◽  
Aligned Carbon Nanotubes ◽  
Potential Applications

Ceria nanoparticles supported on aligned carbon nanotubes (CeO2/ACNTs), a novel adsorbent for fluoride from drinking water, were prepared by chemical reaction of CeCl3 with NaOH on aligned carbon nanotube solution and subsequent heat treatment. The best fluoride adsorption effect of CeO2/ACNTs occurs at pH 4.0 ~ 9.0. The largest adsorption capacity of CeO2/ACNTs reaches 33.7 mg g-1 at an equilibrium fluoride concentration of 18.0 mg l-1 at pH 7.0. The experiment results suggest that CeO2/ACNTs have great potential applications in environmental protection.

scholarly journals The doping of carbon nanotubes with nitrogen and their potential applications

Carbon ◽  
2010 ◽  
Vol 48 (3) ◽  
pp. 575-586 ◽  
Author(s):  
P. Ayala ◽  
R. Arenal ◽  
M. Rümmeli ◽  
A. Rubio ◽  
T. Pichler
Keyword(s):  
Carbon Nanotubes ◽  
Potential Applications

scholarly journals Self-assembled nanocapsules in water: a molecular mechanistic study

2017 ◽  
Vol 19 (31) ◽  
pp. 20377-20382
Author(s):  
Hang Xiao ◽  
Xiaoyang Shi ◽  
Xi Chen
Keyword(s):  
Carbon Nanotubes ◽  
Drug Delivery ◽  
Internal Pressure ◽  
Mechanistic Study ◽  
Potential Applications ◽  
Self Assembled ◽  
High Internal Pressure ◽  
Very High

One-end-open carbon nanotubes with an appropriate radius difference can coaxially self-assemble into a nanocapsule with very high internal pressure (on the order of 1 GPa), underpinning potential applications in nano-reactors, drug-delivery, etc.

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