Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Cheol-Hun Lee"'
Activation of nitrogen species mixed with Ar and H2S plasma for directly N-doped TMD films synthesis
Autor:
Jinill Cho, Hyunho Seok, Inkoo Lee, Jaewon Lee, Eungchul Kim, Dougyong Sung, In-Keun Baek, Cheol-Hun Lee, Taesung Kim
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-8 (2022)
Abstract Among the transition metal dichalcogenides (TMD), tungsten disulfide (WS2) and molybdenum disulfide (MoS2) are promising sulfides for replacing noble metals in the hydrogen evolution reaction (HER) owing to their abundance and good catalytic
Externí odkaz:
https://doaj.org/article/c93da7d5364e4d6ea99de0ab4a3aea21
Autor:
Hyunjung Cho, Jinwoo Lee, Haemin Lee, Sung-Hyun Lee, Junbeom Park, Cheol-Hun Lee, Kun-Hong Lee
Publikováno v:
Materials, Vol 11, Iss 11, p 2170 (2018)
To increase the strength of carbon nanotube (CNT) fibers (CNTFs), the mean size of voids between bundles of CNTs was reduced by wet-pressing, and the CNTs were cross-linked. Separate and simultaneous physical (roller pressing) and chemical methods (c
Externí odkaz:
https://doaj.org/article/d4c7230f3bc14cb1a1133343c38429ac
Publikováno v:
Carbon. 173:782-791
We propose a reliable and accurate method that uses ultraviolet–visible–near infrared absorbance to measure the isotropic-cloud point (ICP) of carbon nanotube (CNT)/chlorosulfonic acid (CSA) solutions. This information is necessary to improve und
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb07d2517586080cbe0c499628be6edc
https://doi.org/10.1016/j.carbon.2020.11.058
https://doi.org/10.1016/j.carbon.2020.11.058
Publikováno v:
Carbon. 167:181-187
The yield and length of carbon nanotube (CNT) forests were increased by using regenerated quartz tubes. Carbonaceous impurities remained in the walls of the regenerated quartz tube. When CNT forests were synthesized in regenerated quartz tubes, the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eeec0c2e0852ec1e2d49bfc30d4ded8a
https://doi.org/10.1016/j.carbon.2020.06.020
https://doi.org/10.1016/j.carbon.2020.06.020
Autor:
Hyunho, Seok, Inkoo, Lee, Jinill, Cho, Dougyong, Sung, In-Keun, Baek, Cheol-Hun, Lee, Eungchul, Kim, Sanghuck, Jeon, Kihong, Park, Taesung, Kim
Publikováno v:
Nanotechnology. 33(2)
Nanostructural modification of two-dimensional (2D) materials has attracted significant attention for enhancing hydrogen evolution reaction (HER) activity. In this study, the nanostructure of TaS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::2ad74cc96de0ae4d667a8c4bb54d984c
https://pubmed.ncbi.nlm.nih.gov/34587601
https://pubmed.ncbi.nlm.nih.gov/34587601
Publikováno v:
Carbon. 152:482-488
To increase the length and coherence of carbon nanotube (CNT) forests that are grown by chemical vapor deposition, we implant Fe ions into an Al2O3 supporting layer to weaken the gradient of Fe concentration when Fe catalyst layer is deposited on it.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15c8b0d98142f97a9cf50bde8b3f87b3
https://doi.org/10.1016/j.carbon.2019.06.030
https://doi.org/10.1016/j.carbon.2019.06.030
Autor:
Haemin Lee, Kun-Hong Lee, Hye-Rim Kim, Jinwoo Lee, Sung-Hyun Lee, Junbeom Park, Cheol-Hun Lee, Jaegeun Lee
Publikováno v:
Chemical Engineering Science. 192:655-664
The direct spinning process is a useful method for continuously synthesizing carbon nanotube (CNT) fibers. A reactor should be designed based on reactor design principles in order to study the synthesis mechanism and mass production of CNT fibers. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cd54940d69e06b317de7cc95ef8789e
https://doi.org/10.1016/j.ces.2018.07.041
https://doi.org/10.1016/j.ces.2018.07.041
Autor:
Sung-Hyun Lee, Hyunjin Park, Juhan Kim, Haemin Lee, Eugene Oh, Gye-Hoon Kwak, Hyunjung Cho, Kun-Hong Lee, Suk-Bae Yoon, Ji-Eun Kim, Cheol-Hun Lee, Won Jae Lee, Junbeom Park
Publikováno v:
Carbon. 136:409-416
Carbon nanotube (CNT) fibers were strengthened by wet stretching with 1-Methyl-2-pyrrolidinone (NMP) or chlorosulfonic acid (CSA) as the wetting liquid, and the change of hierarchical structure of CNT fibers was observed at a nanometer level. Two kin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59e3921c12ae1909414ff96df349a99f
https://doi.org/10.1016/j.carbon.2018.04.071
https://doi.org/10.1016/j.carbon.2018.04.071
Autor:
In-Keun Baek, Sanghuck Jeon, Hyunho Seok, Eungchul Kim, Inkoo Lee, Dougyong Sung, Cheol-Hun Lee, Jinill Cho, Taesung Kim, Kihong Park
Publikováno v:
Nanotechnology. 33:025603
Nanostructural modification of two-dimensional (2D) materials has attracted significant attention for enhancing hydrogen evolution reaction (HER) activity. In this study, the nanostructure of TaS2 films was controlled by controlling the Ar/H2S gas ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d6b5845d2a5be9c936d8ea18021c762
https://doi.org/10.1088/1361-6528/ac2b6c
https://doi.org/10.1088/1361-6528/ac2b6c
Autor:
Hyeon-Gu Cha, Teawon Kim, Cheol-Hun Lee, Sung-Hyun Lee, Hyunjin Park, Seung Min Kim, Jaegeun Lee, Kun-Hong Lee, Youngmoo Eun, Sunmog Yeo
Publikováno v:
Carbon. 123:122-128
We report the synthesis of carbon nanotube (CNT) forests with a narrow diameter distribution based on Fe ion implantation method. By annealing the Fe-implanted SiO 2 /Si wafer in an Ar atmosphere at 800 °C for 15 min, the Fe particles on the surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dbae18ca7fd550bf60fa202f22ef7b8
https://doi.org/10.1016/j.carbon.2017.07.045
https://doi.org/10.1016/j.carbon.2017.07.045