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451.

Effects of pore structures on electrochemical behaviors of polyacrylonitrile-based activated carbon nanofibers by carbon dioxide activation

Hye-Min Lee, Hong-Gun Kim, Kay-Hyeok An, Byung-Joo Kim 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.1 10 71-76 (6 pages)

Hye-Min Lee, Hong-Gun Kim, Kay-Hyeok An, Byung-Joo Kim 저
...
- 3,000원
K were confirmed by Brunauer-Emmett-Teller and Dubinin-Radushkevich equations. As experimental results, many holes or cavernous structures were found on the fiber surfaces after the CO2 activation as confirmed by scanning electron microscopy analysis. Specific surface areas and pore volumes of the prepared ACNFs were enhanced within a range of 10 to 30 min of activation times. Performance of the porous PAN-based nanofibers as an electrode for electrical double layer capacitors was evaluated in...
452.

Preparation and characterization of microporous NaOH activated carbons from hydrofluoric acid leached rice husk and its application for lead(II) adsorption

A. F. Hassan, A. M. Youssef 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.1 8 57-66 (10 pages)

A. F. Hassan, A. M. Youssef 저
...
- 3,000원
Three activated carbons (ACs) were prepared using NaOH (N) as an activating agent. Hydrofluoric acid pre-leached rice husk was used as a precursor. After leaching, the precursor was washed with distilled water, dried, crushed, and then sieved; a size fraction of 0.3-0.5 mm was selected for carbonization in the absence of air at 600°C. The carbonization product (LC) was mixed with NaOH at ratios of 1:2, 1:3, and 1:4 (wt of LC: wt of NaOH) and the produced ACs after activation at 800°C were...
453.

Water and oxygen permeation through transparent ethylene vinyl alcohol/(graphene oxide) membranes

Hye Min Kim, Heon Sang Lee 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.1 7 50-56 (7 pages)

Hye Min Kim, Heon Sang Lee 저
...
- 3,000원
We prepared ethylene vinyl alcohol (EVOH)/graphene oxide (GO) membranes by solution casting method. X-ray diffraction analysis showed that GOs were fully exfoliated in the EVOH/GO membrane. The glass transition temperatures of EVOH were increased by adding GOs into EVOH. The melting temperatures of EVOH/GO composites were decreased by adding GOs into EVOH, indicating that GOs may inhibit the crystallization of EVOH during non-isothermal crystallization. However, the equilibrium melting...
454.

Preparation and application of reduced graphene oxide as the conductive material for capacitive deionization

Ayu Tyas Utami Nugrahenny, Jiyoung Kim, Sang-Kyung Kim, Dong-Hyun Peck, Seong-Ho Yoon, Doo-Hwan Jung 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.1 5 38-44 (7 pages)

Ayu Tyas Utami Nugrahenny, Jiyoung Kim, Sang-Kyung Kim, Dong-Hyun Peck, Seong-Ho Yoon, Doo-Hwan Jung 저
...
- 3,000원
This paper reports the effect of adding reduced graphene oxide (RGO) as a conductive material to the composition of an electrode for capacitive deionization (CDI), a process to remove salt from water using ionic adsorption and desorption driven by external applied voltage. RGO can be synthesized in an inexpensive way by the reduction and exfoliation of GO, and removing the oxygen-containing groups and recovering a conjugated structure. GO powder can be obtained from the modification of Hummers...
455.

Microwave heating of carbon-based solid materials

Teawon Kim, Jaegeun Lee, Kun Hong Lee 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.1 2 15-24 (10 pages)

Teawon Kim, Jaegeun Lee, Kun Hong Lee 저
...
- 3,000원
As a part of the electromagnetic spectrum, microwaves heat materials fast and efficiently via direct energy transfer, while conventional heating methods rely on conduction and convection. To date, the use of microwave heating in the research of carbon-based materials has been mainly limited to liquid solutions. However, more rapid and efficient heating is possible in electron-rich solid materials, because the target materials absorb the energy of microwaves effectively and exclusively....
456.

Removal of deltamethrin insecticide over highly porous

A. F. Hassan, A.M. Youssef, P. Priecel 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2013, Vol.14 No.4 6 234-242 (9 pages)

A. F. Hassan, A.M. Youssef, P. Priecel 저
...
- 3,000원
457.

A novel drying process for oil adsorption of expanded graphite

Soo-Jin Park, Seul-Yi Lee, Ki-Seok Kim, Fan-Long Jin 한국탄소학회 Carbon Letters 3 Pages

한국탄소학회 Carbon Letters 2013, Vol.14 No.3 10 193-195 (3 pages)

Soo-Jin Park, Seul-Yi Lee, Ki-Seok Kim, Fan-Long Jin 저
- 1,500원
458.

Comparative studies of porous carbon nanofibers by various activation methods

Hye-Min Lee, Hyo-Rang Kang, Kay-Hyeok An, Hong-Gun Kim, Byung-Joo Kim 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2013, Vol.14 No.3 7 180-185 (6 pages)

Hye-Min Lee, Hyo-Rang Kang, Kay-Hyeok An, Hong-Gun Kim, Byung-Joo Kim 저
- 3,000원
459.

Methanol oxidation behaviors of PtRu nanoparticles deposited onto binary carbon supports for direct methanol fuel cells

Soo-Jin Park, Jeong-Min Park, Seul-Yi Lee 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2013, Vol.14 No.2 9 121-125 (5 pages)

Soo-Jin Park, Jeong-Min Park, Seul-Yi Lee 저
- 1,500원
460.

Synthesis and electrochemical analysis of Pt-loaded, polypyrroledecorated, graphene-composite electrodes

Jiyoung Park, Seok Kim 한국탄소학회 Carbon Letters 4 Pages

한국탄소학회 Carbon Letters 2013, Vol.14 No.2 8 117-120 (4 pages)

Jiyoung Park, Seok Kim 저
- 1,500원
In this study, an electro-catalyst of Pt nanoparticles supported by polypyrrole-functionalized graphene (Pt/PPy-reduced graphene oxide [RGO]) is reported. The Pt nanoparticles are deposited on the PPy-RGO composite by chemical reduction of H2PtCl6 using NaBH4. The presence of graphene (RGO) caused higher activity. This might have been due to increased electro-chemically accessible surface areas, increased electronic conductivity, and easier charge-transfer at polymer-electrolyte interfaces,...

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