Adsorption of Pollutants from Water with Carbon Nanotubes

2013 ◽  
Vol 634-638 ◽  
pp. 192-197
Author(s):  
Jiang Yan Li ◽  
Ying Xiang Jiang

The unique morphology and structure of carbon nanotubes (CNTs) keep attracting a great number of researchers to explore the novel properties of these materials. The special structure of CNTs determines its physical and chemical properties, mainly reflected in its novel electrical, mechanical properties and excellent adsorption performance. This review summarizes the adsorption properties of CNTs and their properties related to the adsorption of various heavy metal ions, organic and inorganic pollutants from large volumes of aqueous solutions. CNTs is a kind of potential environmental material. This article also put forward future opportunities for CNTs application in environmental systems.

2013 ◽  
Vol 2 (1) ◽  
pp. 47-57 ◽  
Author(s):  
Susanna Bosi ◽  
Alessandra Fabbro ◽  
Laura Ballerini ◽  
Maurizio Prato

AbstractOwing to their peculiar physical and chemical properties, carbon nanotubes are intensively studied for many different applications, including those in the biomedical field. Carbon nanotubes are electrically conductive, elastic but mechanically resistant and these features, among others, have made them an ideal material for therapeutic applications at the neural tissue interface. The major recent advances in the study of carbon nanotube-based materials aimed at nerve tissue regeneration and functional recovery are reviewed here.


Author(s):  
Jiabei Guo ◽  
Hui Jiang ◽  
Yan Teng ◽  
Yue Xiong ◽  
Zhuhui Chen ◽  
...  

Magnetic carbon nanotubes (MCNTs), consisting of carbon nanotubes (CNTs) and magnetic nanoparticles (MNPs), have enormous exploration and application potentials due to their superior physical and chemical properties, such as unique...


MRS Advances ◽  
2017 ◽  
Vol 3 (1-2) ◽  
pp. 1-11
Author(s):  
Chengzhi Luo ◽  
Chunxu Pan

ABSTRACTCarbon nanotubes (CNTs) possess superior mechanical, physical and chemical properties that make them ideal candidates for making sensors. However, challenges restricting their widespread applications in sensors still exist. To make the CNTs-based sensors own higher performance, nature has offered us with scientific and technological clues from the formation of biological composites using common organic components via naturally mild approaches. This paper reviews the recent progress on the bio-inspired synthesis of the CNTs-based sensors and their unique structures and novel properties.


2007 ◽  
Vol 06 (06) ◽  
pp. 431-442 ◽  
Author(s):  
W. L. WANG ◽  
X. D. BAI ◽  
E. G. WANG

Soon after the discovery of carbon nanotubes (CNTs) in the early 1990's, the B - and/or N -doped CNTs began to attract increasing interest owing to their modified structural, physical and chemical properties. In comparison with the multi-walled nanotubes and nanofibers, substitutional doping of the single-walled nanotubes (SWNTs) has proved to be much more difficult, and it is only in very recent years that some experimental studies concerning the B - and/or N -doped SWNTs are emerging. This paper intends to provide an up-to-date overview of current research on the doped SWNTs, with scopes covering both the binary system of CB x- and CN x-SWNTs and the ternary B x C y N z-SWNTs. A survey of the latest achievements in the syntheses of doped SWNTs through either the direct syntheses methods or the post-synthetic substitution reaction route is first presented; then the aspects concerning their structural features, elemental compositions, dopants bonding configuration and atomic distributions, as well as their physical and chemical properties are discussed.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jiaqi Tang ◽  
Xiang Wang ◽  
Jiaxu Zhang ◽  
Jing Wang ◽  
Wanjian Yin ◽  
...  

AbstractThe interesting physical and chemical properties of carbon nanotubes (CNTs) have prompted the search for diverse inorganic nanotubes with different compositions to expand the number of available nanotechnology applications. Among these materials, crystalline inorganic nanotubes with well-defined structures and uniform sizes are suitable for understanding structure–activity relationships. However, their preparation comes with large synthetic challenges owing to their inherent complexity. Herein, we report the example of a crystalline nanotube array based on a supertetrahedral chalcogenide cluster, K3[K(Cu2Ge3Se9)(H2O)] (1). To the best of our knowledge, this nanotube array possesses the largest diameter of crystalline inorganic nanotubes reported to date and exhibits an excellent structure-dependent electric conductivity and an oriented photoconductive behavior. This work represents a significant breakthrough both in terms of the structure of cluster-based metal chalcogenides and in the conductivity of crystalline nanotube arrays (i.e., an enhancement of ~4 orders of magnitude).


2019 ◽  
pp. 48-53
Author(s):  
Sergey Boroznin ◽  
Yuliya Dvuzhilova ◽  
Natalya Boroznina ◽  
Ilya Dvuzhilov ◽  
Irina Zaporotskova

Carbon nanotubes are structures where, due to their ideal structure, there is no electron scattering on defects in the crystal structure, so that they have high conductivity and low heat release during the passage of current. Thus, carbon nanotubes that conduct heat well are a material that can be used to achieve high thermal insulation properties. The exceptional physical and mechanical properties of carbon nanotubes make it possible to use them as nanofillers in order to obtain new materials with predictable properties and characteristics. Due to their structure and geometry, CNTS have unique mechanical, sorption and other properties. The unique structure of CNTS provides them with high surface activity, because of which they are widely used as fillers and functional additives. Modification of the material by nanotubes can lead to a significant improvement in the physical and mechanical characteristics of the original systems, as well as to an increase in their energy – saving properties. To date, the creation of composite materials based on carbon nanotubes is one of the most pressing issues, and the study of physical, chemical and mechanical characteristics of nanocomposites remains relevant, has scientific and practical significance, since the creation of such materials opens up great opportunities for their use in various fields of industry. In this work the influence of carbon nanotubes on some physical and chemical properties of GF-021 applied on various surfaces, such as brick, wood, gypsum board been, investigated. The results of the experiments show that the functional additive based on carbon nanotubes favorably influences such properties of the GF-021 primer as the drying time and stability to the static action of a 3 % solution of sodium chloride.


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