Carbon Nanostructures Doped with Transition Metals for Pollutant Gas Adsorption Systems

Ramírez-de-Arellano, Juan Manuel; Canales, M.; Magaña, L. F.

doi:10.3390/molecules26175346

Cited by 7 publications

(3 citation statements)

References 171 publications

(201 reference statements)

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“…Doping has been widely used to modify the structural, electronic, and reactive properties of pristine carbon nanomaterials to NO x gases [ 115 , 116 , 117 ]. In this same direction, there are numerous studies on the use of doping as a strategy to improve the properties of CNTs with respect to NO x gases.…”

Section: Theoretical Studiesmentioning

confidence: 99%

Role of Defect Engineering and Surface Functionalization in the Design of Carbon Nanotube-Based Nitrogen Oxide Sensors

Valdés-Madrigal

Montejo‐Alvaro

Cernas-Ruiz

et al. 2021

IJMS

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Nitrogen oxides (NOx) are among the main atmospheric pollutants; therefore, it is important to monitor and detect their presence in the atmosphere. To this end, low-dimensional carbon structures have been widely used as NOx sensors for their outstanding properties. In particular, carbon nanotubes (CNTs) have been widely used as toxic-gas sensors owing to their high specific surface area and excellent mechanical properties. Although pristine CNTs have shown promising performance for NOx detection, several strategies have been developed such as surface functionalization and defect engineering to improve the NOx sensing of pristine CNT-based sensors. Through these strategies, the sensing properties of modified CNTs toward NOx gases have been substantially improved. Therefore, in this review, we have analyzed the defect engineering and surface functionalization strategies used in the last decade to modify the sensitivity and the selectivity of CNTs to NOx. First, the different types of surface functionalization and defect engineering were reviewed. Thereafter, we analyzed experimental, theoretical, and coupled experimental–theoretical studies on CNTs modified through surface functionalization and defect engineering to improve the sensitivity and selectivity to NOx. Finally, we presented the conclusions and the future directions of modified CNTs as NOx sensors.

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Section: Theoretical Studiesmentioning

confidence: 99%

Role of Defect Engineering and Surface Functionalization in the Design of Carbon Nanotube-Based Nitrogen Oxide Sensors

Valdés-Madrigal

Montejo‐Alvaro

Cernas-Ruiz

et al. 2021

IJMS

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“…Graphdiyne (GDY), as an increasing popular two-dimensional carbon material, possesses a sp-and sp 2 -hybridized carbon network and exhibits a unique structure as well as a series of superior properties [1][2][3]. Since it was first experimentally synthesized in 2010 by Li's group in China, GDY has attracted intensive attention in the research fields of catalysis [4,5], energy conversion [6,7], membrane separator [8], energy storage [9,10], and so on.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Support Effect of Graphdiyne Nanotubes with Abundant Cu Quantum Dots

Lv,

Wang,

et al. 2024

Molecules

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Graphdiyne (GDY) is considered a very attractive support for metal nanocatalysts due to its unique structure and superior properties. The metal–GDY interaction can significantly affect the performance of catalysts. Herein, GDY nanotubes abundant in in situ formed Cu quantum dots (QDs) (Cu-GDYNT) are prepared using the electrospun polyacrylonitrile nanofibers collected on the surface of electrolytic Cu foil as templates. The diameter of the Cu-GDYNT is controllable and the uniform size of the embedded Cu QDs is about 2.2 nm. And then, the uniformly dispersed and highly active supported catalysts of ruthenium nanoparticles (Rux/Cu-GDYNT) are produced using the Cu-GDYNT as the support. Among them, the Ru3/Cu-GDYNT exhibit outstanding HER performance at all pH levels. Only 17, 67 and 83 mV overpotential is required to reach a current density of 10 mA cm−2 in 1.0 M KOH, 0.5 M H2SO4 and 1.0 M neutral PBS solutions, respectively. The sample exhibits 3000 CV cycle stability and 20 h continuous electrolysis without performance degradation in an alkaline medium. This work provides a new idea for constructing the GDY-supported metal nanocatalysts.

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“…The unique morphology and size of CNTs provide excellent mechanical properties, large specific surface area, high electrical and thermal conductivity, flexible surface chemistry and valuable optical properties [13]. These features have prompted CNTs to be applied as the key component in various composites, sensors, coatings, and devices [11,14]. Moreover, hollow-tube-shaped structures coupled with the possibility of functionalisation make them highly engaging in biomedical applications [15].…”

Section: Introductionmentioning

confidence: 99%

Dark-Field Hyperspectral Microscopy for Carbon Nanotubes Bioimaging

Ishmukhametov

Fakhrullin

2021

Applied Sciences

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Carbon nanotubes have emerged as a versatile and ubiquitous nanomaterial, finding applications in industry and biomedicine. As a result, biosafety concerns that stimulated the research focused on evaluation of carbon nanotube toxicity. In addition, biomedical applications of carbon nanotubes require their imaging and identification in biological specimens. Among other methods, dark-field microscopy has become a potent tool to visualise and identify carbon nanotubes in cells, tissues, and organisms. Based on the Tyndall effect, dark-field optical microscopy at higher magnification is capable of imaging nanoscale particles in live objects. If reinforced with spectral identification, this technology can be utilised for chemical identification and mapping of carbon nanotubes. In this article we overview the recent advances in dark-field/hyperspectral microscopy for the bioimaging of carbon nanotubes.

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Carbon Nanostructures Doped with Transition Metals for Pollutant Gas Adsorption Systems

Cited by 7 publications

References 171 publications

Role of Defect Engineering and Surface Functionalization in the Design of Carbon Nanotube-Based Nitrogen Oxide Sensors

Role of Defect Engineering and Surface Functionalization in the Design of Carbon Nanotube-Based Nitrogen Oxide Sensors

Preparation and Support Effect of Graphdiyne Nanotubes with Abundant Cu Quantum Dots

Dark-Field Hyperspectral Microscopy for Carbon Nanotubes Bioimaging

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