Synthesis of multiwall carbon nanotubes in presence of magnetic field using underwater arc discharge system

Soni, Gyanesh; Jain, Khushboo; Soni, Purushottam; Jangir, Rakhi Kumari; Vijay, Y.K.

doi:10.1016/j.matpr.2020.06.256

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…Meskipun suhu nitrogen cair sangat rendah tetapi penguapan yang intens selama arc-discharge mencegah pertukaran panas yang tepat antara zat yang dihasilkan dan sekitarnya, sehingga efisiensi pendinginannya kurang dibandingkan dengan air deionisasi (Sari et al, 2018). Biasanya, dalam metode arc-discharge, anoda dan katoda pada elektroda yang digunakan terbuat dari batang grafit (Soni et al, 2020). Mekanisme pertumbuhan yang berbeda untuk struktur material karbon pada situs anoda dan katoda berlaku pada reaktor arc (Borand et al, 2021).…”

Section: Metode Arc-dischargeunclassified

Sintesis Carbon Nanofoam dan Karakteristiknya

2023

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Karbon memiliki kemampuan untuk membuat jaringan ikatan hibridisasi sp, sp‒sp2, sp2, sp3, dan sp2‒sp3,sehingga karbon terdapat dalam banyak bentuk alotrop seperti grafit, diamond, graphene, nanofiber, nanofoam, dan nanotube. Carbon nanofoam (CNF) terbentuk dari atom karbon yang terikat secara sp2 dan sp3. CNF memiliki struktur sel terbuka yang saling berhubungan, densitas yang sangat rendah, stabilitas termal yang tinggi, dan porositas yang tinggi. CNF dapat diperoleh dengan menggunakan berbagai metode seperti chemical vapor depositon, laser ablsasi, arc-discharge, dan pirolisis. Sintesis dengan berbagai jenis sumber karbon dan keadaan eksperimen menghasilkan material yang memiliki berbagai ukuran, luas permukaan, dan strukturnya. Struktur CNF terdiri dari dua jenis berdasarkan pola tepi strukturnya yaitu zigzag dan armchair. Hasil karakterisasinya menunjukkan bahwa CNF lebih banyak mengandung karbon dengan hibridisasi sp2 dengan struktur yang berinterkoneksi satu sama lain dan memiliki densitas yang sangat rendah. Selain itu, material ini juga memiliki pori dalam ukuran mesopori dan luas permukaan yang tinggi. Sifat unik yang dimiliki oleh CNF berpotensi diaplikasikan dalam berbagai bidang seperti filter, superkapasitor, dan energy storage. Synthesis of Carbon Nanofoam and Its Characteristics. Carbon can create sp, sp‒sp2, sp2, sp3, and sp2‒sp3 hybridized bond networks, which make carbon in many allotropes forms such as graphite, diamond, graphene, nanofiber, nanofoam, and nanotubes. Carbon nanofoam (CNF) is formed by sp2 and sp3 bonded carbon atoms. CNF has an interconnected open-cell structure, very low density, high thermal stability, and high porosity. CNF is obtained using several methods, such as laser ablation, arc-discharge, chemical vapor deposition, and pyrolysis. Synthesis with various types of carbon sources and experimental conditions resulted in materials having various sizes, surface areas, and structures. The structure of CNF consists of two edge pattern types, including zigzag and armchair. The characterization results show that CNF contains more interconnected carbon with sp2 hybridization and has a very low density. In addition, this material also has pores in the mesoporous size and high surface area. The unique properties of CNF provide potential applications in various fields, such as filters, supercapacitors, and energy storage.

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Section: Metode Arc-dischargeunclassified

Sintesis Carbon Nanofoam dan Karakteristiknya

2023

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“…To choose the right technology for growing nanotubes, it is necessary to take into account the simplicity and cheapness of the given method and the quality of the nanotubes obtained by it. In the last decade, the growth of CNTs has been carried out mainly using the following technological methods: laser ablation, electric arc discharge (EAD), and chemical vapor deposition (CVD). − These methods have been well studied and greatly improved over the years to present a high degree of crystallinity and purity. Despite all this, the growth of nanostructures by the above-mentioned techniques is accompanied by a low tunability and reproducibility of the key parameters of the growing nanotubes. − The high-frequency magnetron sputtering method represents a favorable alternative to obtaining CNTs as a simple and controllable growing technology.…”

Section: Introductionmentioning

confidence: 99%

Growth, Characterization, and Application of Vertically Aligned Carbon Nanotubes Using the RF-Magnetron Sputtering Method

et al. 2023

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The aim of this work is to synthesize and characterize a nanostructured material with improved parameters suitable as a chemiresistive gas sensor sensitive to propylene glycol vapor (PGV). Thus, we demonstrate a simple and cost-effective technology to grow vertically aligned carbon nanotubes (CNTs) and fabricate a PGV sensor based on Fe2O3:ZnO/CNT material using the radio frequency magnetron sputtering method. The presence of vertically aligned carbon nanotubes on the Si(100) substrate was confirmed by scanning electron microscopy and Fourier transform infrared (FTIR), Raman, and energy-dispersive X-ray spectroscopies. The uniform distribution of elements in both CNTs and Fe2O3:ZnO materials was revealed by e-mapped images. The hexagonal shape of the ZnO material in the Fe2O3:ZnO structure and the interplanar spacing in the crystals were clearly visible by transmission electron microscopy images. The gas-sensing behavior of the Fe2O3:ZnO/CNT sensor toward PGV was investigated in the temperature range of 25–300 °C with and without ultraviolet (UV) irradiation. The sensor showed clear and repeatable response/recovery characteristics in the PGV range of 1.5–140 ppm, sufficient linearity of response/concentration dependence, and high selectivity both at 200 and 250 °C without UV radiation. This is a basis for concluding that the synthesized Fe2O3:ZnO/CNT structure is the best candidate for use in PGV sensors, which will allow its further successful application in real-life sensor systems.

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Synthesis of multiwall carbon nanotubes in presence of magnetic field using underwater arc discharge system

Cited by 2 publications

References 24 publications

Sintesis Carbon Nanofoam dan Karakteristiknya

Sintesis Carbon Nanofoam dan Karakteristiknya

Growth, Characterization, and Application of Vertically Aligned Carbon Nanotubes Using the RF-Magnetron Sputtering Method

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