A5081274227- Metal-Organic Frameworks: Synthesis and Applications
- Hydrogen Storage and Materials
- Chemical Synthesis and Characterization
- Covalent Organic Framework Applications
- Carbon Dioxide Capture Technologies
- Membrane Separation and Gas Transport
- Ammonia Synthesis and Nitrogen Reduction
- Radioactive element chemistry and processing
- Magnetism in coordination complexes
- Zeolite Catalysis and Synthesis
- Spacecraft and Cryogenic Technologies
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Catalytic Processes in Materials Science
- Conducting polymers and applications
- Magnetic and transport properties of perovskites and related materials
- Inorganic Fluorides and Related Compounds
- Supercapacitor Materials and Fabrication
- Advanced Photocatalysis Techniques
- Structural Behavior of Reinforced Concrete
- Lanthanide and Transition Metal Complexes
- Boron and Carbon Nanomaterials Research
- Muon and positron interactions and applications
- TiO2 Photocatalysis and Solar Cells
- Graphene research and applications
Ulsan National Institute of Science and Technology
2022-2025
Nano Carbon (Poland)
2025
Gyeongnam National University of Science and Technology
2015-2022
Gyeongsang National University
2021-2022
Advanced Institute of Convergence Technology
2019-2021
Seoul National University
2020
Government of the Republic of Korea
2018
Max Planck Institute for Intelligent Systems
2012-2016
Materials Science & Engineering
2016
Kyungpook National University
2016
The search for new efficient physisorbents gas capture and storage is the objective of numerous ongoing researches in realm functional framework materials. Here we present CO2 H2 uptake capacities nitrogen rich covalent triazine frameworks (CTFs) based on lutidine, pyrimidine, bipyridine, phenyl units, showing superior uptakes extremely high selectivities toward N2. a bipyridine-CTF synthesized at 600 °C (5.58 mmol g–1, 273 K) highest reported all CTFs so far second porous organic polymers...
Pyrdine incorporation into the covalent organic framework COF-1 resulted in a highly dense packing structure which pyridine occupies hexagonal pore space between COF layers. This optimizes aperture for quantum sieving of hydrogen isotopes and introduces flexibility at cryogenic temperatures system. The separation factor (S) is about 10 22 K, highest reported to date. As service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer...
Spreading rumors on the Internet has become increasingly pervasive due to proliferation of online social media. This paper investigates how are amplified by a group users who share similar interests or views, dubbed as an echo chamber. To this end, we identify and analyze 'rumor' chambers, each which is have participated in propagating common rumors. By collecting analyzing 125 recent from six popular fact-checking sites, their associated 289,202 tweets/retweets generated 176,362 users, find...
The metal-organic framework, MFU-4, possessing small cavities and apertures, is exploited for quantum sieving of hydrogen isotopes. Quantum mechanically, a molecule confined in cavity shows an increase effective size depending on the particle mass, which leads to faster deuterium adsorption from H2/D2 isotope mixture. As service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized online delivery, but not...
Porous organic polymers have come into focus recently for the capture and storage of postcombusted CO2. Covalent triazine frameworks (CTFs) constitute a nitrogen-rich subclass porous polymers, which offers enhanced tunability functionality combined with high chemical thermal stability. In this work new covalent framework based on fluorene building blocks is presented, along comprehensive elucidation its local structure, porosity, capacity CO2 H2 storage. The synthesized under ionothermal...
Separating gaseous mixtures that consist of very similar size is one the critical issues in modern separation technology. Especially, isotopes hydrogen and deuterium requires special efforts, even though these show a large mass ratio. Conventionally, H/D can be realized through cryogenic distillation molecular species or Girdler-sulfide process, which are among most energy-intensive techniques chemical industry. However, costs significantly reduced by using highly mass-selective nanoporous...
Three-dimensional covalent organic frameworks (COFs) have been demonstrated as a new class of templates for nanoparticles. Photodecomposition the [Pd(η(3)-C(3) H(5))(η(5)-C(5)H(5))]@COF-102 inclusion compound (synthesized by gas-phase infiltration method) led to formation Pd@COF-102 hybrid material. Advanced electron microscopy techniques (including high-angle annular dark-field scanning transmission and tomography) along with other conventional characterization unambiguously showed that...
Deuterium plays a pivotal role in industrial and scientific research, is irreplaceable for various applications such as isotope tracing, neutron moderation, scattering. In addition, deuterium key energy source fusion reactions. Thus, the isolation of from physico-chemically almost identical isotopic mixture seminal challenge modern separation technology. However, current commercial approaches suffer extremely low efficiency (i.e., cryogenic distillation, selectivity 1.5 at 24 K), requiring...
Breathing of MIL-53(Al), a flexible metal-organic framework (MOF), leads to dynamic changes as narrow pore (np) transitions large (lp). During the and reversible transition, apertures are continuously adjusted, thus providing tremendous opportunity separate mixtures similar-sized similar-shaped molecules that require precise tuning. Herein, for first time, we report strategy effectively separating hydrogen isotopes through change during breathing representative MOFs. The experiment shows...
Hydrogen isotope mixtures can be separated either by confinement in small pores [i.e., “kinetic quantum sieving” (KQS)] or strong adsorption sites “chemical affinity (CAQS)]. MOFs are excellent candidates for study of these effects, due to their well‐defined, tunable pore structures and the potential introduce directly into framework structure. In this microreview we summarize recent status hydrogen separation using future strategies relating it. Furthermore, a state‐of‐the‐art technique...
Deuterium has been recognized as an irreplaceable element in industrial and scientific research. However, hydrogen isotope separation still remains a huge challenge due to the identical physicochemical properties of isotopes. In this paper, partially fluorinated metal-organic framework (MOF) with copper, so-called FMOFCu, was investigated determine efficiency capacity for deuterium extraction from mixture. The unique structure porous material consists trimodal pore system large tubular...
Abstract Hydrogen storage in absorbents as activated carbons has been rarely investigated; however, about 25 years ago, the development of new nanomaterials, initiated by Iijima’s discovery carbon microtubules, started hopes. Unfortunately, initial results on high hydrogen uptake nanotubes at ambient conditions could not be independently reproduced; cryogenic conditions, these novel nanomaterials just behaved with an proportional to surface area. Shortly after, coordination polymers...
High surface area porous carbon with fibrous microstructure offers a broader application potential than powder form. However, controlling the high porosity is difficult, and if possible then through complex time-consuming synthesis method. Herein, development of nanoporous activated fiber by activating spider silk (natural biomaterials) using potassium hydroxide being reported. The specific (SSA) total pore volume for developed material were 2730 m2/g 1.56 cc/g, respectively, its contain...
Nanoporous materials have attracted great attention for gas storage, but achieving high volumetric storage capacity remains a challenge. Here, by using neutron powder diffraction, adsorption, inelastic scattering and first-principles calculations, we investigate magnesium borohydride framework that has small pores partially negatively charged non-flat interior hydrogen nitrogen uptake. Hydrogen occupy distinctly different adsorption sites in the pores, with very limiting capacities of 2.33 H
Hydrogen storage is crucial in the shift toward a carbon-neutral society, where hydrogen serves as pivotal renewable energy source. Utilizing porous materials can provide an efficient solution, reducing tank pressures to manageable levels and circumventing energy-intensive costly current technological infrastructure. Herein, two highly aromatic frameworks (PAFs), C-PAF Si-PAF, prepared through Yamamoto C─C coupling reaction between trigonal prismatic monomers, are reported. These PAFs...