Synthesis of Carbon Nanotubes by Plasma-Enhanced Chemical Vapor Deposition Using Fe1−xMnxO Nanoparticles as Catalysts: How Does the Catalytic Activity of Graphitization Affect the Yields and Morphology?

Yanase, Takashi; Miura, Takuya; Shiratori, Tatsuya; Weng, Mengting; Nagahama, Taro; Shimada, Toshihiro

doi:10.3390/c5030046

Cited by 11 publications

(7 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These values were obtained by averaging along the vertical catalytic bed containing the carbonaceous materials. The quality of CNTs can be evaluated by the intensity ratio of D peak (ID) and G peak (IG) because the G band (1585 cm -1 ) is assigned to the intrinsic vibrational mode of CNT, while the D band (1330 cm -1 ) is assigned to the defect mode [50]. ID/IG was calculated as 0.7 for sample CoMo in experiment 3, which is can considered CNT with high quality [50].…”

Section: Resultsmentioning

confidence: 99%

Atmospheric Plasma for Carbon Nanotubes Production

Labanca¹,

Silva²,

Sacorague³

2020

Int J Astronaut Aeronautical Eng

View full text Add to dashboard Cite

This article presents preliminary results of methane pyrolysis in an argon thermal plasma reactor using catalysts as an alternative method for carbon nanotubes synthesis. Inside the reaction chamber located downstream of the plasma discharge, three different types of catalysts were tested simultaneously to analyze the formation of carbon nanotubes (CNTs) at atmospheric pressure and under different conditions of operation. The method considered here can be regarded as a variation of the Chemical Vapor Deposition (CVD), the most used method. In the present case, the CVD process is aided by electrical discharges in the ionization of a carrier gas as a way of supplying energy to the process and for this reason it is also known as Plasma Enhanced Chemical Vapor Deposition (PECVD). This article cites some advantages of the proposed method in the evaluation of it as a possible technique for carbon nanotubes production on a commercial scale. sense, is the electrical conductivity of a CNT that strongly depends on the crystalline orientation of the carbon network in the CNT itself. Usually, carbon nanotubes are formed in a grouped manner without chemical bonds between them and can be aligned or entangled, which depends on their growth mechanism. CNTs clusters are formed due to van der Waals force. Their morphological characteristics are not identical among the CNTs present in the same mass of carbonaceous materials. CNTs require sophisticated production processes and the effort to develop reactors for the synthesis of large-scale carbon nanomaterials has been undertaken by several research groups. The

show abstract

Section: Resultsmentioning

confidence: 99%

Atmospheric Plasma for Carbon Nanotubes Production

Labanca¹,

Silva²,

Sacorague³

2020

Int J Astronaut Aeronautical Eng

View full text Add to dashboard Cite

show abstract

“…The major determining factor in CVD is the substratum temperature. CVD has highly pure, consistent, hard and strong nanoparticles as its advantages while its disadvantages includes as it requires specialized equipment and the gaseous by-products are highly toxic in nature [ 90 ].…”

Section: Different Methods Of Nanoparticles Synthesismentioning

confidence: 99%

Relevance of Nanomaterials in Food Packaging and its Advanced Future Prospects

Chaudhary

Fatima

Ankur

2020

J Inorg Organomet Polym

184

View full text Add to dashboard Cite

Biopolymers have been used in packaged foods to tackle environmental hazards due to their biodegradability and non-toxic nature. In addition to these merits, they have also several demerits such as poor mechanical properties and low resistance towards water. Nanomaterials have attracted great interest in recent years due to their phenomenal properties that makes them precedent in applications for food packaging as they enhance the mechanical, thermal and gas barriers properties, without compromising with the ability to become non-toxic and biodegradable. The most important nanomaterials used in food packaging are montmorillonite (MMT), zinc oxide (ZnO-NPs) coated silicate, kaolinite, silver NPs (Ag-NPs) and titanium dioxide (TiO 2 NPs) as these, nanomaterials coated films makes a barrier against oxygen, carbon dioxide and favour compounds. They also possess oxygen scavenging capability, antimicrobial activity and tolerance towards temperature. The most difficult task related to the preparation of these nanocomposites is their complete distribution within the polymer matrix and their compatibility. Therefore, there is an increasing demand for improvement in the performance of nano-packaging materials including mechanical stability, degradability and effectiveness of antibacterial property.

show abstract

“…The substratum temperature is a very important factor in chemical vapor deposition. The main benefits of chemical vapor deposition are the formation of highly pure, consistent, hard and strong nanoparticles but the great shortcomings are sophisticated equipment are needed and highly toxic gaseous by‐products are produced (Chaudhary et al, 2020; Yanase et al, 2019).…”

Section: Functions Of Packaging In Food Processingmentioning

confidence: 99%

Applications of nano‐materials in food packaging: A review

Albanie

Ashaolu

2021

J Food Process Engineering

View full text Add to dashboard Cite

This review assesses applications of nano‐materials in food packaging. The review also discusses the features and uses of major nano‐materials that are commonly used in food and food products packaging. Migration research, consumer safety issues, and public health concerns are also discussed. Nano‐materials particularly nanoparticles due to their mechanical, optical, catalytic, and antimicrobial properties could play a major role in food packaging. Nano‐materials like silver nanoparticles (AgNPs) and nanoclay are currently major nano‐enabled food and food products packaging materials available in the market. Nano‐zinc oxide (ZnO) and titanium are also available in the market but to a less extent. Nano‐materials could be as antimicrobial to control microbial growth as well as improving barrier properties of food packages to increase the shelf life and freshness of packaged food products. However, despite the advantages of nano‐materials in food packaging, there is growing concern about the safety and potential risks due to migration of nano‐particles from food and food products contact materials to fish and fish products. In conclusion, for breakthrough in the use of nano‐materials in food and food products packaging, consumer acceptance challenges, technologies of manufacturing, costs and the regulation need to be given right perspective. Practical Application In recent time, researches have directed at improving knowledge of composition, processing and packaging technologies of food and food products by both developed and developing countries. Food and food products are bio‐systems that undergo deterioration immediately after harvesting or slaughtering as the case may be. This requires special handling to prevent food spoilage through contamination. Quality of food and food products can only be maintained when processed and packaged in appropriate packaging materials. The use of nano‐materials in food and food products packaging is promising area to improve packaging functionality, however, the knowledge about particle migration and toxicity remains limited. It is therefore necessary that food and food products should be handled with utmost care by using good and appropriate packaging materials that are non‐toxic, safe and environmental friendly.

show abstract

Synthesis of Carbon Nanotubes by Plasma-Enhanced Chemical Vapor Deposition Using Fe1−xMnxO Nanoparticles as Catalysts: How Does the Catalytic Activity of Graphitization Affect the Yields and Morphology?

Cited by 11 publications

References 50 publications

Atmospheric Plasma for Carbon Nanotubes Production

Atmospheric Plasma for Carbon Nanotubes Production

Relevance of Nanomaterials in Food Packaging and its Advanced Future Prospects

Applications of nano‐materials in food packaging: A review

Contact Info

Product

Resources

About