C
Chyongjin Pac
Researcher at Korea University
Publications - 23
Citations - 1055
Chyongjin Pac is an academic researcher from Korea University. The author has contributed to research in topics: Catalysis & Photocatalysis. The author has an hindex of 14, co-authored 23 publications receiving 839 citations. Previous affiliations of Chyongjin Pac include Pohang University of Science and Technology & Korea University Sejong Campus.
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Journal ArticleDOI
Carborane Photochemistry Triggered by Aryl Substitution: Carborane‐Based Dyads with Phenyl Carbazoles
TL;DR: A new type of donor-acceptor dyad, carbazolylaryl-substituted ortho-carboranes, which are conveniently prepared from the corresponding acetylenes and decaborane pathways, showed unique excited-state behavior associated with electron transfer unlike the meta- and para-counterparts.
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Highly Robust Hybrid Photocatalyst for Carbon Dioxide Reduction: Tuning and Optimization of Catalytic Activities of Dye/TiO2/Re(I) Organic-Inorganic Ternary Systems.
TL;DR: The present results confirm that the TiO2 semiconductor in the heterogeneous hybrid system is an essential component that can effectively work as an electron reservoir and as an electrons transporting mediator to play essential roles in the persistent photocatalysis activity of the hybrid system in the selective reduction of CO2 to CO.
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Widely Controllable Syngas Production by a Dye-Sensitized TiO2 Hybrid System with ReI and CoIII Catalysts under Visible-Light Irradiation
TL;DR: Visible-light irradiation of a ternary hybrid catalyst prepared by grafting a dye, an H2 evolving CoIII catalyst and a CO-producing ReI catalyst on TiO2 have been found to produce both H2 and CO in CO2 -saturated N,N-dimethyl formamide (DMF)/water solution containing a 0.1 m sacrificial electron donor.
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Development of a Lower Energy Photosensitizer for Photocatalytic CO2 Reduction: Modification of Porphyrin Dye in Hybrid Catalyst System
Dong-Il Won,Jong-Su Lee,Qiankai Ba,Yang-Jin Cho,Ha-Yeon Cheong,S.J. Choi,Chul Hoon Kim,Ho-Jin Son,Chyongjin Pac,Sang Ook Kang +9 more
TL;DR: In this article, a series of Zn-porphyrin dyes were prepared and anchored onto a TiO2 surface to complete a dye-sensitized photocatalyst system, Zn−PORPHyrin-|TiO2|-Cat, and tested as lower energy photosensitizers for photocatalytic CO2 reduction.
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Significance of hydrophilic characters of organic dyes in visible-light hydrogen generation based on TiO2.
Su-Hyun Lee,Yiseul Park,Kyung-Ryang Wee,Ho-Jin Son,Dae Won Cho,Chyongjin Pac,Wonyong Choi,Sang Ook Kang +7 more
TL;DR: The hydrogen-generation efficiencies and optimum amounts of the dyes grafted to Pt/TiO(2) were affected substantially by the hydrophilic and steric effects of R; moderately Hydrophilic DEO1 and DEO2 showed higher sensitization activity at a lower loading than hydrophobic D-H.