Carbon nanotubes: Sensor properties. A review

Запороцкова, И. В.; Борознина, Н. П.; Parkhomenko, Yuri N.; Кожитов, Л. В.

doi:10.1016/j.moem.2017.02.002

Cited by 373 publications

(227 citation statements)

References 77 publications

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“…At present, nanotechnology plays a significant role in sensing the pollutants by improving sensors more specific and sensible for air monitoring. Nanoensors are presently being utilized for the detection of several toxic compounds at ppm and ppb levels in different environmental systems (Zhou et al, 2015).Nanotechnology plays an important role in sensing via many ways (Zaporotskova et al, 2016) : at first, the nanoparticles are able to be coated with several chemical and biological ligands helping to improve the sensor specificity. Secondly, the surface/volume ratio of the nanoparticles allowed to vary the size and shape of the nanoparticles thus controlling the interaction with the pollutant molecule.…”

Section: Sensing and Detectionmentioning

confidence: 99%

Nanotechnology: Future of Environmental Air Pollution Control

Mohamed

2017

EMSD

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Environmental contamination is one of the important issues that the world is confronting today, and it is expanding with each passing year and leading to grave and harmful effect to the earth. At present, the air contains various pollutants like CO, chlorofluorocarbons, volatile organic compounds, hydrocarbons, and nitrogen oxides. Water and soil are also contaminated with organic and inorganic compounds, the major sources for water and soil contamination are sewage water, industrial effluents, random use of pesticides, fertilizers, and oil spills. In parallel, the rapid growth of nanotechnology has gained a great deal of interest in the applications of nanomaterials potential in improved systems for monitoring and cleanup including all the three phases of environment . It can develop the pollutants sensing and detection and help in the improvement of novel remediation technologies. Nanomaterials are excellent adsorbents, catalysts and sensors due to their large specific surface areas and high reactivates. This review firstly sheds the light on the definition of nanoparticles, and the nanotechnology concept, the fundamental properties, classification, and fields of nanotechnology applications. Then it focuses broadly on the application of nanotechnology in environmental fields, in particular, its application in air pollution monitoring and remediation and its future trend in this field.

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Section: Sensing and Detectionmentioning

confidence: 99%

Nanotechnology: Future of Environmental Air Pollution Control

Mohamed

2017

EMSD

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“…Besides the semiconducting properties, SWCNTs present high electron and hole mobilities [7], improving short-circuit currents in solar cell devices [8,9]; through chemical doping of the graphitic structure, the band-gap is modified and permits the SWCNTs to serve as a chemical sensor where the response is generally interpreted as a current change when a probe molecule interacts with the doping agent in the graphitic structure [10]. Another important application field in gas adsorption, nanotube packaging leaves interstitial pores where small molecules such as hydrogen can be adsorbed for energy-related research [10]. Despite the huge brand of applications, nowadays SWCNT synthesis processes are expensive, requiring sophisticated production set-ups such as laser ablation and arc-discharge.…”

Section: Introductionmentioning

confidence: 99%

Single Wall Carbon Nanotubes Synthesis through Methane Chemical Vapor Deposition over MCM-41–Co Catalysts: Variables Optimization

Rodriguez

López

Giraldo

2018

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MCM-41-Co catalysts were tested in the synthesis of single wall carbon nanotubes (SWCNTs) through methane chemical vapor deposition (CVD), varying total cobalt content, synthesis temperature, methane flow rate, and deposition time. All variables showed a relationship with total carbon deposition, graphitic quality according to Raman results. Cobalt content showed a maximum activity at 4%, but the structural quality is best at 3%. Flow rate does not affect the quality up to 300 cm 3 min −1 , but deposition time leads to the formation of highly disordered carbon species passing methane for periods longer than 30 min, concluding that optimal variables are a methane deposition temperature of 800 • C, a 300 cm 3 min −1 methane flow rate, and a 30 min of methane injection time, leading to a 5.4% carbon mass content and 5.1 G/D area ratios.

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“…It was shown that the electric field of laser radiation may facilitate formation of the frame work of carbon nanotubes (CNTs) in the BNC composition 8 . The presence of this framework forms conditions for self-organization (self assembly) of biological tissues, which occurs without human interference, being supported by weak non-covalent (hydrogen, ion) bonds upon hydrophobic interaction of tissues.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2018

IJPSR

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Bulk nanocomposites prepared from aqueous albumin dispersion with carbon nanotubes by removing the liquid component from the dispersion have been investigated. The composites were obtained by thermostating and exposure to LED and IR diode laser radiation. The nanocomposites obtained under laser irradiation retain their shape and properties for several years, in contrast to the composites fabricated in different ways (which decompose into small fragments immediately after preparation). The low density of the composites under study (~1200 kg/m 3 ), which is close to the density of water, is due to their high porosity. The hardness of stable nanocomposites (~300 MPa) was found to be at the same level as the hardness of polymethylmethacrylate, aluminium, and iron and close to the hardness of human bone tissue. The cluster quasi ordering of the inner structure of nanocomposites revealed by atomic force microscopy indicates the possibility of forming a bulk nanotube framework in them, which can be caused by the effect of the electric field of laser radiation and ensure their stability and hardness. The presence of a framework in nanocomposites provides conditions for self-assembly of biological tissues and makes it possible to apply laser-prepared nanocomposites as a component of surgical implants.

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Carbon nanotubes: Sensor properties. A review

Cited by 373 publications

References 77 publications

Nanotechnology: Future of Environmental Air Pollution Control

Nanotechnology: Future of Environmental Air Pollution Control

Single Wall Carbon Nanotubes Synthesis through Methane Chemical Vapor Deposition over MCM-41–Co Catalysts: Variables Optimization

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