A5068356425- Advanced Photocatalysis Techniques
- Electrocatalysts for Energy Conversion
- Graphene research and applications
- TiO2 Photocatalysis and Solar Cells
- Ammonia Synthesis and Nitrogen Reduction
- Covalent Organic Framework Applications
- Conducting polymers and applications
- Advanced battery technologies research
- Carbon dioxide utilization in catalysis
- Catalysis and Hydrodesulfurization Studies
- Fuel Cells and Related Materials
- Electrochemical sensors and biosensors
- Advancements in Battery Materials
- Catalytic Processes in Materials Science
- Hydrogen Storage and Materials
- Graphene and Nanomaterials Applications
- Surface Chemistry and Catalysis
- Catalysts for Methane Reforming
- Quantum Dots Synthesis And Properties
- MXene and MAX Phase Materials
- Carbon Nanotubes in Composites
- Metal-Organic Frameworks: Synthesis and Applications
- Fiber-reinforced polymer composites
- Advanced Nanomaterials in Catalysis
Ulsan National Institute of Science and Technology
2016-2025
Korea Institute of Science and Technology
2025
Developing efficient and stable electrocatalysts is crucial for the electrochemical production of pure clean hydrogen. For practical applications, an economical facile method producing catalysts hydrogen evolution reaction (HER) essential. Here, we report ruthenium (Ru) nanoparticles uniformly deposited on multi-walled carbon nanotubes (MWCNTs) as HER catalyst. The catalyst exhibits small overpotentials 13 17 mV at a current density 10 mA cm
Abstract Developing efficient and cost‐effective electrocatalysts to replace expensive carbon‐supported platinum nanoparticles for the alkaline hydrogen evolution reaction remains an important challenge. Recently, innovative catalyst, composed of ruthenium single atoms (Ru 1 ) integrated with small Ru nanoclusters NC ), has attracted considerable attention from scientific community. However, because its complexity, this catalyst a topic some debate. Here, method is reported precisely...
Abstract To address energy and environmental problems, innumerable titanium dioxide (TiO 2 )‐based photocatalysts have been reported over the last four decades. TiO has attracted immense interest because it is low‐cost, abundant, photoresponsive. Sunlight‐driven fuel production one of ideal photocatalytic approaches in terms economics environment. However, performance issues with remain, including insufficient charge separation due to rapid recombination photogenerated carriers, poor...
The physical and photochemical properties of covalent organic frameworks (COFs) can be tuned by their structural features such as the chemical composition conjugation building units. combination units with different intrinsic also influence electronic, adsorption, optical properties. For study on symmetrical feature COF its physical/photochemical properties, we prepared benzothiazole-based COFs (TTzTp BTzTp) two combinations, composed tris-benzothiazole triamine (TTz) or bis-benzothiazole...
Potassium oxide (K2O) is used as a promotor in industrial ammonia synthesis, although metallic potassium (K) better theory. The reason K2O because K, which volatilizes around 400 °C, separates from the catalyst harsh synthesis conditions of Haber-Bosch process. To maximize efficiency using K with low temperature reaction below °C prerequisite. Here, we synthesize and Fe via mechanochemical process near ambient (45 1 bar). final concentration reaches high 94.5 vol%, was extraordinarily higher...
Single atom catalysts (SACs) with isolated active sites exhibit the highest reported mass activity for hydrogen evolution catalysis, which is crucial practical applications. Here, we demonstrate that ultrahigh can also be achieved by rationally merging platinum (Pt) in SAC. The catalyst was obtained thermodynamically driven diffusing and phosphorus-doped carbon (PC) supported Pt single atoms (Pt1@PC) into nanoclusters (PtM@PC). X-ray absorption spectroscopy analysis revealed merged much...
Abstract Fluorinated carbon materials (FCMs) have received significant attention, because of their exceptional stability, which is associated with the strong C‐F bonding, strongest among single bonds. However, fluorination requires extremely toxic and moisture‐sensitive reagents, makes it inapplicable for practical uses. Here, a straightforward relatively safe method are reported scalable synthesis FCMs, by mechanochemical depolymerization polytetrafluoroethylene (PTFE) fragmentation...
Carbon hydrogasification is the slowest reaction among all carbon-involved small-molecule transformations. Here, we demonstrate a mechanochemical method that results in both faster rate and new synthesis route. The was dramatically enhanced by up to 4 orders of magnitude compared traditional thermal method. Simultaneously, exhibited very high selectivity (99.8 % CH4 , versus 80 under conditions) with cobalt catalyst. Our study demonstrated this extreme increase originates from continuous...
Abstract Platinum (Pt) nanoparticles are considered to be the most efficient catalyst for acidic hydrogen evolution reaction (HER). However, they expensive and unstable, because of agglomeration Ostwald ripening. It is critically necessary developing a better catalytic support stabilize Pt at low loading amounts. One route improving both activity durability metal catalysts stably anchored on heteroatom functionalized carbon supports via their strong interactions. Nevertheless, interactions...
Developing clean and renewable energy resources has become one of the world's most important challenges, given double burden scarcity environmental pollution. For sustainable conversion storage, efficient electrocatalysts play a pivotal role in energy‐related reactions, including oxygen reduction, evolution, hydrogen evolution. To satisfy practical requirements, catalysts need to demonstrate high performance, durability, acceptable cost. These are primary considerations when designing...
Triazine-functionalized graphene nanoplatelets were synthesized for use as platinum nanoparticle supports. The Pt/TfGnP catalyst exhibited high electrocatalytic activity with superb stability both the ORR and IRR.
Abstract Carbon hydrogasification is the slowest reaction among all carbon‐involved small‐molecule transformations. Here, we demonstrate a mechanochemical method that results in both faster rate and new synthesis route. The was dramatically enhanced by up to 4 orders of magnitude compared traditional thermal method. Simultaneously, exhibited very high selectivity (99.8 % CH , versus 80 under conditions) with cobalt catalyst. Our study demonstrated this extreme increase originates from...
Edge-functionalized graphene nanoplatelets (EFGnPs) can be produced by ball-milling in a simple and ecofriendly manner. As described Jong-Beom Baek Do Hyung Kweon article number 1804440, the unique feature of this process is use kinetic energy to generate active carbon species, which react with target substances. Due their tunable edge-functionality, EFGnPs offer various potential applications. are depicted here as counter electrodes materials dye-sensitized solar cells.