scholarly journals Preliminary results on the preparation of carbon nanotubes using arc discharge in water medium

2020 ◽  
pp. 26-30
Author(s):  
Ulambayar R ◽  
Dawaabal B ◽  
Oyun-Erdene G ◽  
J Temuujin
Keyword(s):  
Carbon Nanotubes ◽  
Large Scale ◽  
Arc Discharge ◽  
Low Cost ◽  
Water Medium ◽  
X Ray Diffraction ◽  
Plastic Container ◽  
Graphite Electrodes ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Depending on the application, carbon nanotubes are being intensively studied in physics, chemistry, medicine, and computers. Therefore, it is important to develop large-scale high-quality multi-walled carbon nanotubes production at low cost. Wehere conducted a study on the easy preparation of low-cost carbon nanotubes. Two graphite electrodes were placed vertically in a thick, clear plastic container with distilled water to produce a carbon nanotube with an alternating current arc. The device has a simple design and the water acts as an insulating medium and cools the system. X-ray diffraction (XRD) and infrared spectrum (FTIR) analysis of the obtained carbon soot was performed in comparison with technical multi-walled carbon nanotubes. These tests confirmed that the multi-walled carbon nanotubes were formed during the experiment. Нуман цахилалтын аргаар усан орчинд нүүрстөрөгчийн нано хоолой гарган авах урьдчилсан судалгаа Хураангуй: Нүүрстөрөгчийн нано хоолойг хэрэглээнээс хамаарч физик, хими, анагаах ухаан, компьютер гэх зэрэг салбаруудад эрчимтэй судлаж байна. Иймээс ч өндөр чанартай олон ханатай нүүрстөрөгчийн нано хоолойг бага зардлаар их хэмжээтэй, гарган авах арга техникийг хөгжүүлэх нь нэн чухал юм. Бид бага зардлаар нүүрстөрөгчийн нано хоолойг хялбараар гарган авах судалгааг явууллаа. Нэрмэл ус бүхий зузаан тунгалаг хуванцар саванд бал чулуун хоёр электродыг босоо хэлбэртэй байрлуулан хооронд нь хувьсах гүйдлийн нуман цахилалт цахилуулан нүүрстөрөгчийн нано хоолойг гарган авсан. Энэхүү төхөөрөмж нь энгийн хялбар хийцтэй бөгөөд ус нь тусгаарлагч орчин болж, системийг хөргөдөг. Гарган авсан нүүрстөрөгчийн хөөнд рентген дифракцийн (XRD) болон нил улаан туяаны спектрийн (FTIR) шинжилгээг техникийн олон ханатай нүүрстөрөгчийн нано хоолойтой харьцуулан хийж гүйцэтгэсэн. Эдгээр шинжилгээгээр олон ханатай нүүрстөрөгчийн нано хоолой туршилтын явцад үүссэн болохыг баталлаа. Түлхүүр үг: Нуман цахилалт, нүүрстөрөгчийн нано хоолой, графен, графит (бал чулуу)

Novel ionic bioartificial muscles based on ionically crosslinked multi-walled carbon nanotubes-mediated bacterial cellulose membranes and PEDOT:PSS electrodes

2021 ◽  
Author(s):  
Yaofeng Wang ◽  
Fan Wang ◽  
Yang Kong ◽  
Lei Wang ◽  
Qinchuan Li
Keyword(s):  
Carbon Nanotubes ◽  
Bacterial Cellulose ◽  
Specific Capacitance ◽  
High Performance ◽  
Low Cost ◽  
Actuation Voltage ◽  
Fast Response ◽  
Bending Deformation ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Abstract High-performance bioartificial muscles with low-cost, large bending deformation, low actuation voltage, and fast response time have drawn extensive attention as the development of human-friendly electronics in recent years. Here, we report a high-performance ionic bioartificial muscle based on the bacterial cellulose (BC)/ionic liquid (IL)/multi-walled carbon nanotubes (MWCNT) nanocomposite membrane and PEDOT:PSS electrode. The developed ionic actuator exhibits excellent electro-chemo-mechanical properties, which are ascribed to its high ionic conductivity, large specific capacitance, and ionically crosslinked structure resulting from the strong ionic interaction and physical crosslinking among BC, IL, and MWCNT. In particular, the proposed BC-IL-MWCNT (0.10 wt%) nanocomposite exhibited significant increments of Young's modulus up to 75% and specific capacitance up to 77%, leading to 2.5 times larger bending deformation than that of the BC-IL actuator. More interestingly, bioinspired applications containing artificial soft robotic finger and grapple robot were successfully demonstrated based on high-performance BC-IL-MWCNT actuator with excellent sensitivity and controllability. Thus, the newly proposed BC-IL-MWCNT bioartificial muscle will offer a viable pathway for developing next-generation artificial muscles, soft robotics, wearable electronic products, flexible tactile devices, and biomedical instruments.

Catalytic metal-free formation of multi-walled carbon nanotubes in atmospheric arc discharge

Carbon ◽  
2012 ◽  
Vol 50 (12) ◽  
pp. 4588-4595 ◽  
Author(s):  
Yoong Ahm Kim ◽  
Hiroyuki Muramatsu ◽  
Takuya Hayashi ◽  
Morinobu Endo
Keyword(s):  
Carbon Nanotubes ◽  
Arc Discharge ◽  
Metal Free ◽  
Multi Walled Carbon Nanotubes ◽  
Catalytic Metal ◽  
Walled Carbon Nanotubes

scholarly journals Determination of Heavy Metals in Herbal Food Supplements using Bismuth/Multi-walled Carbon Nanotubes/Nafion modified Graphite Electrodes sourced from Waste Batteries

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Shirley Palisoc ◽  
Remuel Isaac M. Vitto ◽  
Michelle Natividad
Keyword(s):  
Carbon Nanotubes ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Graphite Electrode ◽  
Anodic Stripping Voltammetry ◽  
Graphite Electrodes ◽  
Bismuth Nanoparticles ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

AbstractAn electrochemical sensor based on graphite electrode extracted from waste zinc-carbon battery is developed. The graphite electrode was modified with bismuth nanoparticles (BiNP), multi-walled carbon nanotubes (MWCNT) and Nafion via the drop coating method. The bare and modified graphite electrodes were used as the working electrode in anodic stripping voltammetry for the determination of trace amounts of cadmium (Cd2+) and lead (Pb2+). The modified electrode exhibited excellent electroanalytical performance for heavy metal detection in comparison with the bare graphite electrode. The linear concentration range from 5 parts per billion (ppb) to 1000 ppb (R2 = 0.996), as well as detection limits of 1.06 ppb for Cd2+ and 0.72 ppb for Pb2+ were obtained at optimized experimental conditions and parameters. The sensor was successfully utilized for the quantification of Cd2+ and Pb2+ in herbal food supplement samples with good agreement to the results obtained by atomic absorption spectroscopy. Thus, the BiNP/MWCNT/Nafion modified graphite electrode is a cost-effective and environment-friendly sensor for monitoring heavy metal contamination.

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