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Carbon Letters, Vol. 23 - New Issue Alert
Carbon Letters, Vol. 22 - New Issue Alert
Carbon Letters, Vol. 21 - New Issue Alert
Lee, Young-Seak
(Chungnam Nat'l Univ., Korea)
Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.
CURRENT ISSUE : Vol. 23, Number 1, July, 2017
Hole quality assessment of drilled CFRP and CFRP-Ti stacks holes using polycrystalline diamond (PCD) tools
Dave Kim1, Aaron Beal2, Kiweon Kang3 and Sang-Young Kim3,♠
Polycrystalline diamond (PCD) tools possessing high hardness and abrasive wear resistance are particularly suited for drilling of carbon fiber reinforced plastic (CFRP) composites, where tool life and consistent hole quality are important. While PCD presents superior performance when drilling CFRP, it is unclear how it performs when drilling multi-stack materials such as CFRP-titanium (Ti) stacks. This comparative study aims to investigate drilling of a Ti plate stacked on a CFRP pane...
Fabrication of nitrogen doped ordered mesoporous carbon derived from glucosamine with hybrid capacitive behaviors
Deyi Zhang1,2,♠, Mei Han1, Yubing Li1, Bing Wang1, Yi Wang1, Kunjie Wang1 and Huixia Feng1
This paper introduces a nitrogen-doped ordered mesoporous carbon (NOMC) derived from glucosamine with hybrid capacitive behaviors, achieved by successfully combining electrical double-layer capacitance with pseudo-capacitance behaviors. The nitrogen doping content of the fabricated NOMC reached 7.4 at% while its specific surface area (SBET) and total pore volume reached 778 m2 g-1 and 1.17 cm3 g-1, respectively. A dual mesoporous structure w...
Synthesis, characterization, and antibacterial performance of Ag-modified graphene oxide reinforced electrospun polyurethane nanofibers
Bishweshwar Pant1, Mira Park2, Rae-Sang Jang2, Woo-Cheol Choi2,3, Hak-Yong Kim2,4,♠ and Soo-Jin Park1,♠
Polyurethane (PU) nanofibers containing graphene oxide (GO) and Ag doped functionalized reduced graphene oxide (Ag-RGO) were successfully prepared via the electrospinning technique. The uniform distribution of GO sheets along with Ag nanoparticle in the nano?bers was investigated by scanning electron microscopy and the elemental mapping technique. X-ray diffraction and thermal gravimetric analysis veri?ed the presence of GO and Ag in the bicomposite nano?brous mats. Antibacterial test...
Mechanical and electrical properties of cement paste incorporated with pitch-based carbon fiber
Inkyu Rhee1, Jin Hee Kim2, Sang Hee Park3, Sungho Lee4, Bong Ryeul Ryu5,♠ and Yoong Ahm Kim5,♠
The compressive strength and electrical resistance of pitch-based carbon fiber (CF) in cementitious materials are explored to determine the feasibility of its use as a functional material in construction. The most widely used CFs are manufactured from polyacrylonitrile (PAN-based CF). Alternatively, short CFs are obtained in an economical way using pitch as a precursor in a melt-blown process (pitch-based CF), which is cheaper and more eco-friendly method because this pitch-based CF i...
Adsorption of Nile Blue A from aqueous solution by different nanostructured carbon adsorbents
Shahryar Abbasi and Hadi Noorizadeh
Dyes are widely used in various industries including textile, cosmetic, paper, plastics, rubber, and coating, and their discharge into waterways causes serious environmental and health problems. Four different carbon nanostructures, graphene oxide, oxidized multi-walled carbon nanotubes, activated carbon and multi-walled carbon nanotubes, were used as adsorbents for the removal of Nile Blue A (NBA) dye from aqueous solution. The four carbon nanostructures were characterized by scannin...
Electrochemical determination of chloramphenicol using a glassy carbon electrode modified with dendrite-like Fe3O4 nanoparticles
Krishnan Giribabu1,*, Sung-Chan Jang1,2,*, Yuvaraj Haldorai3, Muruganantham Rethinasabapathy1, Seo Yeong Oh1, Arunkumar Rengaraj1, Young-Kyu Han3, Wan-Seob Cho4,♠, Changhyun Roh2,5,♠, and Yun Suk Huh1,♠
In this study, magnetite (Fe3O4) nanoparticles were electrochemically synthesized in an aqueous electrolyte at a given potential of -1.3 V for 180 s. Scanning electron microscopy revealed that dendrite-like Fe3O4 nanoparticles with a mean size of < 80 nm were electrodeposited on a glassy carbon electrode (GCE). The Fe3O4/GCE was utilized for sensing chloramphenicol (CAP) by cyclic voltammetry and square wave voltammetry...
Effect of added mesophase pitch during the pitch synthesis reaction of PFO
Ji Hong Kim1,2, Jong Gu Kim1,3, Chul Wee Lee1,4, Ki Bong Lee2, and Ji Sun Im1,4,♠
This research considers the effect of added mesophase pitch (MP) as an additive during the pitch synthesis reaction of pyrolyzed fuel oil (PFO). Two effects are generated by adding MP. One is an enhancement of thermal stability due to the high thermal property of the additive; the other is that the volatile compounds that were removed by vaporization of PFO during the thermal reaction can participate in the pitch synthesis reaction (PFO→pitch) more efficiently. The effect differs acco...
Dispersions of partially reduced graphene oxide in various organic solvents and polymers
Hye Min Kim1,2, Seo Gyun Kim1, and Heon Sang Lee1,♠
We report on the dispersion state of partially reduced graphene oxide (PRGO) in organic solvents, namely methyl ethyl ketone, ethyl acetate, methylene chloride, toluene, and xylene, by controlling the carbon to oxygen (C/O) atomic ratio of the PRGOs. A two-phase solvent exchange method is also proposed to transfer PRGO from water to an aprotic solvent, such as methyl ethyl ketone. We achieve relatively good dispersion in aprotic and non-polar solvents by controlling the C/O atomic rat...
Capacitance behaviors of conducting polymer-coated graphene nanosheets composite electrodes containing multi-walled carbon nanotubes as additives
Hoe-Seung Kim1, Yongju Jung2 and Seok Kim1,♠
Lyocell-based activated carbon fibers improved the adsorption of harmful gas properties when produced via dual-simultaneous treatments
Byong Chol Bai1,2, Ji Sun Im1,2,♠, and Young-Seak Lee 3,♠
Effects of synthesis pressure conditions on the preparation of graphene-like carbonaceous materials from organic liquid precursors by a solvothermal method
Kwan-Woo Kim1,2, Byoung Suhk Kim2, Sang Won Lee1, Dong Chul Chung1, and Byung-Joo Kim1,3,♠
Facile fabrication of electrospun polyacrylonitrile/ poly(vinylidene fluoride)-based carbon nanofibers for supercapacitor electrodes
Hyo In Lee and Soo-Jin Park
Preparation of carbon discs using petroleum-based binder pitch reformed with carbon black
Sangmin Lee, Kyung Hoon Kim and Young-Seak Lee