Jouhahn Lee

Hyun Uk Lee6
Soon Chang Lee6
So Young Park4
Young-Chul Lee4
Saehae Choi4
6Hyun Uk Lee
6Soon Chang Lee
4So Young Park
4Young-Chul Lee
4Saehae Choi
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Using a simple method of mass production of green carbon nanotags (G-tags) from harmful cyanobacteria, we developed an advanced and efficient imaging platform for the purpose of anticancer therapy. Approximately 100 grams of G-tags per 100 kilograms of harmful cyanobacteria were prepared using our eco-friendly approach. The G-tags possess high solubility,(More)
  • Hyun Uk Lee, Soon Chang Lee, Jonghan Won, Byung-Chul Son, Saehae Choi, Yooseok Kim +4 others
  • 2015
Over the past few decades, two-dimensional (2D) and layered materials have emerged as new fields. Due to the zero-band-gap nature of graphene and the low photocatalytic performance of MoS2, more advanced semiconducting 2D materials have been prompted. As a result, semiconductor black phosphorus (BP) is a derived cutting-edge post-graphene contender for(More)
It is known that water purified by conventional TiO2 photocatalysts may not be safe enough for drinking, due to the toxicity by tiny existence of TiO2 nanoparticles after water treatment. We herein demonstrate a facile design of a three-dimensional (3D) TiO2 photocatalyst structure with which both the efficiency of purification and the safety level of the(More)
High-quality N-doped graphene quantum sheets are successfully fabricated from as-grown monolayer graphene on Cu using nitrogen plasma, which can be transferred as a film-like layer or easily dispersed in an organic solvent for further optoelectronic or photoelectrochemical applications.
  • Soonjoo Seo, Hyun Uk Lee, Soon Chang Lee, Yooseok Kim, Hyeran Kim, Junhyeok Bang +4 others
  • 2016
Few-layer black phosphorus (BP) is the most promising material among the two-dimensional materials due to its layered structure and the excellent semiconductor properties. Currently, thin BP atomic layers are obtained mostly by mechanical exfoliation of bulk BP, which limits applications in thin-film based electronics due to a scaling process. Here we(More)
  • Ha-Rim An, So Young Park, Hyeran Kim, Che Yoon Lee, Saehae Choi, Soon Chang Lee +9 others
  • 2016
We report an effect involving hydrogen (H2)-plasma-treated nanoporous TiO2(H-TiO2) photocatalysts that improve photocatalytic performance under solar-light illumination. H-TiO2 photocatalysts were prepared by application of hydrogen plasma of assynthesized TiO2(a-TiO2) without annealing process. Compared with the a-TiO2, the H-TiO2 exhibited high(More)
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