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911.

Non-blinking dendritic crystals from C-dot solution

Ashmi Mewada, Ritesh Vishwakarma, Bhushan Patil, Chinmay Phadke 한국탄소학회 Carbon Letters 4 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.3 8 211-214 (4 pages)

Ashmi Mewada, Ritesh Vishwakarma, Bhushan Patil, Chinmay Phadke 저
...
- 1,500원
Bio-imaging and drug carriers for delivery have created a huge demand for crystals. Crystals are fascinating materials that have been grown for a long time but obtaining biocompatible fluorescent crystals is a challenging task. We report on the growth of fluorescent crystals using a carbon dot (C-dot) solution by a hydrothermal process. The crystallization pattern of these C-dots exhibited a unique dendritic structure having a feather-like morphology. The growth temperature and pressure were...
912.

Manufacturing and characteristics of PAN-based composite carbon fibers containing cellulose particles

Jee-Woo Yang, Da Young Jin, Ji Eun Lee, Seung Goo Lee, Won Ho Park 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.3 7 203-210 (8 pages)

Jee-Woo Yang, Da Young Jin, Ji Eun Lee, Seung Goo Lee, Won Ho Park 저
...
- 3,000원
This study fabricated low thermal conductive polyacrylonitrile (PAN)-based carbon fibers containing cellulose particles while maintaining their mechanical properties. The high thermal conductivity of carbon fibers limits their application as a high temperature insulator in various systems such as an insulator for propulsion parts in aerospace or missile systems. By controlling process parameters such as the heat treatment temperature of the cellulose particles and the amount of cellulose added,...
913.

Influence of defective sites in Pt/C catalysts on the anode of direct methanol fuel cell and their role in CO poisoning: a first-principles study

Soonchul Kwon, Seung Geol Lee 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.3 6 198-202 (5 pages)

Soonchul Kwon, Seung Geol Lee 저
...
- 1,500원
H2 and CO adsorption properties, based on electronic properties such as adsorption energy and electronic band gap. Interestingly, the presence of neighboring defect sites led to a reduction of H2 dissociation and CO poisoning due to atomic Pt filling the defect sites. At distant sites, H2 dissociation was active on Pt, but CO filled the defect sites to form carbon π-π bonds, thus enhancing the oxidation of the carbon surface. It should be noted that defect sites can cause CO poisoning, thereby...
914.

Molecular approach to hexagonal and cubic diamond nanocrystals

Mudar Ahmed Abdulsattar 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.3 5 192-197 (6 pages)

Mudar Ahmed Abdulsattar 저
...
- 3,000원
In the present work, we propose a molecule (C14H14) that can be used as a building block of hexagonal diamond-type crystals and nanocrystals, including wurtzite structures. This molecule and its combined blocks are similar to diamondoid molecules that are used as building blocks of cubic diamond crystals and nanocrystals. The hexagonal part of this molecule is included in the C12 central part of this molecule. This part can be repeated to increase the ratio of hexagonal to cubic diamond and...
915.

Nanoporous graphene oxide membrane and its application in molecular sieving

S. Mahmood Fatemi, Masoud Arabieh, Hamid Sepehrian 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.3 4 183-191 (9 pages)

S. Mahmood Fatemi, Masoud Arabieh, Hamid Sepehrian 저
...
- 3,000원
Gas transport through graphene-derived membranes has gained much interest recently due to its promising potential in filtration and separation applications. In this work, we explore Kr-85 gas radionuclide sequestration from natural air in nanoporous graphene oxide membranes in which different sizes and geometries of pores were modeled on the graphene oxide sheet. This was done using atomistic simulations considering mean-squared displacement, diffusion coefficient, number of crossed species of...
916.

Effects of cross-linking methods for polyethylene-based carbon fibers: review

Kwan-Woo Kim, Hye-Min Lee, Jeong-Hun An, Byoung-Suhk Kim, Byung-Gak Min, Shin-Jae Kang, Kay-Hyeok An, Byung-Joo Kim 한국탄소학회 Carbon Letters 24 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.3 2 147-170 (24 pages)

Kwan-Woo Kim, Hye-Min Lee, Jeong-Hun An, Byoung-Suhk Kim, Byung-Gak Min, Shin-Jae Kang, Kay-Hyeok An, Byung-Joo Kim 저
...
- 5,300원
interest in the use of carbon fiber reinforced plastic (CFRP) in aerospace, renewable energy and other industries, due to its low weight and relatively good mechanical properties compared with traditional metals. However, due to the high cost of petroleum-based precursors and their associated processing costs, CF remains a specialty product and as such has been limited to use in high-end aerospace, sporting goods, automotive, and specialist industrial applications. The high cost of CF is a...
917.

Bulk graphite: materials and manufacturing process

Sang-Min Lee, Dong-Su Kang and Jea-Seung Roh 한국탄소학회 Carbon Letters 12 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.3 1 135-146 (12 pages)

Sang-Min Lee, Dong-Su Kang and Jea-Seung Roh 저
...
- 4,100원
its outstanding properties such as light weight, thermal resistance, electrical conductivity, thermal conductivity, chemical stability, and high-temperature strength, artificial graphite is used across various industries in powder form and bulk form. Artificial graphite of powder form is usually used as anode materials for secondary cells, while artificial graphite of bulk form is used in steelmaking electrode bars, nuclear reactor moderators, silicon ingots for semiconductors, and manufacturing...
918.

Changes in the porosity of bulk graphite according to the viscosity of resin for impregnation

Sang-Min Lee, Dong-Su Kang, Hye-Sung Kim, Jea-Seung Roh 한국탄소학회 Carbon Letters 3 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.2 10 132-134 (3 pages)

Sang-Min Lee, Dong-Su Kang, Hye-Sung Kim, Jea-Seung Roh 저
...
- 1,500원
As a result, the physical properties of bulk graphite are inferior to the theoretical values. Impregnants are impregnated into the pores generated in the carbonization process through pressurization and/or depressurization. The physical properties of bulk graphite that has undergone impregnation and re-carbonization processes are outstanding. In the present study, a green body was manufactured by molding with natural graphite flakes and phenolic resin at 45 MPa. Bulk graphite was manufactured by...
919.

Hydrogen storage capacity of highly porous carbons synthesized from biomass-derived aerogels

Yong-Ki Choi, Soo-Jin Park 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.2 9 127-131 (5 pages)

Yong-Ki Choi, Soo-Jin Park 저
...
- 1,500원
to enhance the specific surface area and microporosity. The micro-structural properties and morphologies were measured by X-ray diffraction and scanning electron microscopy, respectively. The specific surface area and microporosity were investigated by N2/77 K adsorption-desorption isotherms using the Brunauer-Emmett-Teller method and Barrett-Joyner-Halenda equation, respectively. Hydrogen storage capacity was dependent on the activation temperature. The highest capacity of 2.7 wt% at 77 K and 1...
920.

Mechanisms of Na adsorption on graphene and graphene oxide: density functional theory approach

Hye Sook Moon, Ji Hye Lee, Soonchul Kwon, Il Tae Kim, Seung Geol Lee 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.2 7 116-120 (5 pages)

Hye Sook Moon, Ji Hye Lee, Soonchul Kwon, Il Tae Kim, Seung Geol Lee 저
...
- 1,500원
We investigated the adsorption of Na on graphene and graphene oxide, which are used as anode materials in sodium ion batteries, using density functional theory. The adsorption energy for Na on graphene was -0.507 eV at the hollow sites, implying that adsorption was favorable. In the case of graphene oxide, Na atoms were separately adsorbed on the epoxide and hydroxyl functional groups. The adsorption of Na on graphene oxide-epoxide (adsorption energy of -1.024 eV) was found to be stronger than...

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