Efficacy and challenges of carbon nanotube in wastewater and water treatment

Mishra, Shilpa; Sundaram, Baranidharan

doi:10.1016/j.enmm.2022.100764

Cited by 14 publications

(5 citation statements)

References 143 publications

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“…Synthesis of carbon nanotube has been performed using variety of techniques like chemical vapor deposition, physical vapor deposition, laser techniques, and chemical methods [24]. Wide ranging applications of carbon nanotube has been observed in the field ranging from energy and electronics to automotive and space sectors [25][26][27]. Carbon nanotube has been used as a remarkable nanofiller to form the polymeric nanocomposites [28].…”

Section: Gas Sensing Potential Of Carbon Nanotube Nanocompositesmentioning

confidence: 99%

Carbon and graphene based nanocomposites for gas sensors—Current state and advances

Kausar,

Ahmad

2024

Charact. Appl. Nanomater.

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After the discovery of carbon nanoforms, carbon nanotube (one dimensional) and tube like nanostructure and graphene (two dimensional) nanosheets have gained immense research curiosity. Further nanotechnological developments have moved towards the formation of carbon nanotube nanocomposites and graphene nanocomposites. For the purpose, various matrices including thermoplastic polymers and conjugated polymers have been used. Methodology is the systematic gathering of the literature and development of a novel review outline, theme, and discussions regarding the discussed topics. Hence, varying conjugated polymers such as polyaniline, polythiophene, poly(3,4-ethylenedioxythiophene), and nonconjugated nylon, poly(ethylene glycol), etc. have been processed using techniques like in situ, solution, electropolymerization, spin coating, etc. In sensors, the nanocomposites need to develop fine nanoparticle dispersion, network formation, and interfacial interactions ultimately supporting the electron or charge transfer in these nanomaterials desirable for the recognition of the gaseous species. Moreover, interactions of the nanocomposite with the analyte molecules define the sensing capabilities of the nanomaterials. Consequently, nanocarbon nanocomposite based gas sensors have been analyzed for conductivity, change in resistance, sensitivity, selectivity, response time, detection limit, and other desirable properties. For future designs, it is recommended to develop high-tech combinations of conjugated polymers like polythiophene derivatives using functional forms of graphene and carbon nanotube. In addition, use of advanced manufacturing techniques like 3D/4D printing and spin coating must be applied to form efficient sensors. In conclusions, this manuscript presents not only comprehensive but also comparative analysis on different gas analysis parameters such as detection limit, concentration, response time, etc. for various nanocomposite sensors. Lastly, the encounters in preparing and applying graphene/carbon nanotube sensors, associated utilizations, and possible future prospects have been discussed.

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Section: Gas Sensing Potential Of Carbon Nanotube Nanocompositesmentioning

confidence: 99%

Carbon and graphene based nanocomposites for gas sensors—Current state and advances

Kausar,

Ahmad

2024

Charact. Appl. Nanomater.

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“…139 Other nanomaterials, such as carbon nanotubes, can be inhaled and cause lung inflammation. 140 Another concern with nanomaterials within polymeric membranes for water filtration is the interaction of the nanomaterials with biological systems if they are ingested or otherwise enter the human body through drinking water. This concern arises when nanoparticles may lead to adverse effects, such as inflammation, oxidative stress, or other health problems.…”

Section: Toxicity-related Issues With Nanomaterials Within Polymeric ...mentioning

confidence: 99%

“…If ROS are generated within polymeric membranes, they can damage the membrane itself and also contribute to the degradation of organic pollutants . Other nanomaterials, such as carbon nanotubes, can be inhaled and cause lung inflammation …”

Section: Toxicity-related Issues With Nanomaterials Within Polymeric ...mentioning

confidence: 99%

Current Status and Advancement of Nanomaterials within Polymeric Membranes for Water Purification

Noah

2023

ACS Appl. Nano Mater.

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The contamination of water resources is a significant environmental challenge. The creation of innovative technologies to address this challenge is of paramount significance. Nanomaterials within polymeric membranes have surfaced as a hopeful technology within the realm of water purification, offering solutions to crucial issues concerning the elimination of pollutants and pathogens from water supplies. The exceptional properties of nanomaterials within polymeric membranes, including their high surface area, tunable pore sizes, and selective permeability, have enabled significant progress in the effective removal of various contaminants from water. This is due to the integration of nanoscale materials, such as metal nanoparticles, nanofibers, graphene, and graphene oxide, which has further enhanced the membrane performance by introducing enhanced mechanical strength, improved separation efficiency, and increased adsorption capacities. Recent research has focused on tailoring nanomaterials within polymeric membranes to target specific contaminants, such as viruses, bacteria, heavy metals, organic pollutants, and microplastics. Functionalization techniques, such as surface modification and incorporation of specific functional groups, have been employed to enhance the adsorption and separation capabilities of these membranes. Moreover, innovative fabrication methods, including layer-by-layer assembly, electrospinning, and template-assisted techniques, have been explored to achieve precise control over membrane properties and morphology. This review provides an overview of the current status and advancements in the utilization of nanomaterials within polymeric membranes for water purification applications.

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“…Due to lower synthesis and purification costs, and easy application to water treatment, multi-walled carbon nanotubes (MWCNTs) are more widely used than single-walled carbon nanotubes (SWCNTs) [ 24 ]. To improve the removal of heavy metals by carbon nanotubes, the original MWCNTs usually need to be modified.…”

Section: Introductionmentioning

confidence: 99%

Modification of Multiwalled Carbon Nanotubes and Their Mechanism of Demanganization

Zhou

Mao

et al. 2023

Molecules

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Multiwalled carbon nanotubes (MWCNTs) were modified by oxidation and acidification with concentrated HNO3 and H2SO4, and the modified multiwalled carbon nanotubes (M-MWCNTs) and raw MWCNTs were characterized by several analytical techniques. Then the demanganization effects of MWCNTs and M-MWCNTs were well investigated and elucidated. The experimental data demonstrated that the adsorption efficiency of Mn(II) could be greatly promoted by M-MWCNTs from about 20% to 75%, and the optimal adsorption time was 6 h and the optimal pH was 6. The results of the kinetic model studies showed that Mn(II) removal by M-MWCNTs followed the pseudo-second-order model. Isothermal studies were conducted and the results demonstrated that the experimental data fitted well with the three models. The reliability of the experimental results was well verified by PSO–BP simulation, and the present conclusion could be used as a condition for further simulation. The research results provide a potential technology for promoting the removal of manganese from wastewater; at the same time, the application of various mathematical models also provides more scientific ideas for the research of the mechanism of adsorption of heavy metals by nanomaterials.

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Efficacy and challenges of carbon nanotube in wastewater and water treatment

Cited by 14 publications

References 143 publications

Carbon and graphene based nanocomposites for gas sensors—Current state and advances

Carbon and graphene based nanocomposites for gas sensors—Current state and advances

Current Status and Advancement of Nanomaterials within Polymeric Membranes for Water Purification

Modification of Multiwalled Carbon Nanotubes and Their Mechanism of Demanganization

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