A5011667598- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Advanced battery technologies research
- Ammonia Synthesis and Nitrogen Reduction
- Photochemistry and Electron Transfer Studies
- Copper-based nanomaterials and applications
- Electrochemical Analysis and Applications
- Catalytic Processes in Materials Science
- Advanced Chemical Physics Studies
- Crystallization and Solubility Studies
- Spectroscopy and Quantum Chemical Studies
- Supramolecular Self-Assembly in Materials
- X-ray Diffraction in Crystallography
- Quantum, superfluid, helium dynamics
- Fuel Cells and Related Materials
- Caching and Content Delivery
- Laser-Ablation Synthesis of Nanoparticles
- CO2 Reduction Techniques and Catalysts
- Crystal structures of chemical compounds
- Free Radicals and Antioxidants
- Supercapacitor Materials and Fabrication
- Polydiacetylene-based materials and applications
- Porphyrin and Phthalocyanine Chemistry
- Supramolecular Chemistry and Complexes
- Synthesis and Biological Evaluation
Gyeongsang National University
2016-2025
University of Southern California
2022-2024
Institute of Natural Science
2017
Government of the Republic of Korea
2017
Abstract We investigated the role of metal atomization and solvent decomposition into reductive species carbon clusters in phase formation transition‐metal carbides (TMCs; namely, Co 3 C, Fe TiC, MoC) by pulsed laser ablation Co, Fe, Ti, Mo metals acetone. The interaction between s – p ‐orbitals d‐orbitals causes a redistribution valence structure through charge transfer, leading to surface defects as observed X‐ray photoelectron spectroscopy. These influence evolved TMCs, making them...
Electrocatalytic urea oxidation reaction (UOR) has emerged as a promising alternative to the anodic oxygen evolution (OER) in water electrolysis. However, UOR faces challenges like slow kinetics, high energy barriers, and complex mechanism, necessitating development of efficient electrocatalysts. Herein, rapid method is proposed for synthesizing Mo‐doped Ni/NiO (Ni/MNO) nanocomposite highly effective electrocatalyst. Mo doping oxidizes Ni 2+ 3+ , creating abundant active sites UOR. The...
Nowadays, the assembling of hybrid water electrolysis using a hydrazine oxidation reaction (HzOR) instead slow anodic oxygen evolution (OER) has been established as favorable technology for efficient hydrogen (H2) production. Nevertheless, it is still critical to develop highly effective bifunctional electrocatalysts both (HER) and HzOR. In this work, we propose facile approach design synthesis single-Pd-nanoparticles-decorated bimetallic NiCo2O4 nanoplates electrocatalyst HER Initially, are...
Herein, we present Ir-doped NiFe-LDH nanosheets synthesized via a pulsed laser irradiation strategy, showing superior electrocatalytic OER kinetics. We investigate the origin of activity in NiFeIr-LDH through situ / operando Raman and DFT studies.
We investigated the temperature-dependent photoluminescence (PL) properties of colloidal CsPbX3 (X = Br, I, and mixed Br/I) quantum dot (QD) samples in 30–290 K temperature range. Temperature-dependent PL experiments reveal thermal quenching PL, blue shifting optical band gaps, line width broadening for all QD with increasing temperature. Interestingly, side-peak emissions that are spectrally separated from excitonic peaks were observed both CsPbBr3 CsPb(Br/I)3 at temperatures below ∼250 K....
Eliminating harmful organic pollutants from contaminated water remains an urgent problem to be solved. Taking Rhodamine B (RhB) as a representative pollutant we sought design facile and scalable synthesis of BiFeO3/CeVO4 (BFO/CVO) nanocomposite catalyst for the degradation under visible light. BFO nanorods CVO nanoparticles were fabricated using single-step hydrothermal routes resulting materials could easily combined simple wet-chemical precipitation method. From morphological studies, pure...
The present study details the strategic development of Co-doped CuO nanostructures via sophisticated and expedited pulsed laser ablation in liquids (PLAL) technique. Subsequently, these structures are employed as potent electrocatalysts for anodic methanol oxidation reaction (MOR), offering an alternative to sluggish oxygen evolution (OER). Electrochemical assessments indicate that Co-CuO catalyst exhibits exceptional MOR activity, requiring a reduced potential 1.42 V at 10 mA cm
Abstract Herein, an in situ approach of pulsed laser irradiation liquids (PLIL) was exploited to create surface‐modified electrodes for eco‐friendly H 2 fuel production via electrolysis. The surface the nickel foam (NF) substrate nondestructively modified 1.0 mol/L KOH using PLIL, resulting a highly reactive Ni(OH) /NF. Moreover, single‐metal Ir, Ru, and Pd nanoclusters were introduced onto /NF appropriate metal precursors. This simultaneous oxidation NF decoration with reduced metallic...
Abstract The dynamic surface reconstruction of electrodes is a legible sign to understand the deep phase‐transition mechanistic and electrocatalytic origin during oxygen evolution reaction (OER). Herein, we report dual‐laser pulse‐patterned heterointerface α‐Co(OH) 2 reduced graphene oxide (rGO) nanosheets via pulsed laser irradiation in liquid (PLIL) accelerate OER kinetics. was formed from OH − ions generated PLIL GO at neutral pH. Co 2+ modulation tetrahedral coordination sites benefits...
This work highlights the electrocatalytic C–N coupling for urea synthesis, addressing CO 2 and nitrogenous molecule reduction. It tackles challenges in inert activation, side reactions, mechanistic insights, catalyst development.
We demonstrated the morphology transformation of co-assemblies based on terpyridine-based ligands (1R and 1S) possessing R- or S-alanine analogues their platinum(II) complex (2R-Pt 2S-Pt). The right-handed helical ribbon co-assembly formed with 0.5 equivalents 2R-Pt to 1R was converted into left-handed 0.6 2R-Pt. structure became a tubular in presence 0.8-1.0 via inversion at supramolecular level due an orientation change amide groups caused by non-covalent Pt⋅⋅⋅Pt interactions between...
Abstract Developing sustainable energy solutions is critical for addressing the dual challenges of demand and environmental impact. In this study, a zinc‐nitrate (Zn−NO 3 − ) battery system was designed simultaneous production ammonia (NH via electrocatalytic NO reduction reaction (NO RR) electricity generation. Continuous wave CO 2 laser irradiation yielded precisely controlled CoFe O 4 @nitrogen‐doped carbon (CoFe @NC) hollow nanocubes from Prussian blue analogs (CoFe‐PBA) as integral...
To more accurately assess the pathways of biological systems, a probe is needed that may respond selectively to adenosine triphosphate (ATP) for both in vitro and vivo detection modes. We have developed luminescence can provide real-time information on extent ATP, ADP, AMP by virtue lifetime observed from supramolecular polymer based C3 symmetrical terpyridine complex with Tb3+ (S1-Tb). The shows remarkable selective enhancement presence ATP compared other phosphate-displaying nucleotides...
Electrochemical water splitting, driven by processed catalysts, is the most reasonable method for hydrogen production. This study demonstrates an activation phenomenon with ruthenium (Ru) nanoclusters on few-layered black phosphorus (BP), greatly enhancing electrocatalytic evolution reaction (HER). Efficient BP exfoliation was achieved using acoustic levitators and pulsed laser irradiation in liquids (PLIL), yielding charge-transfer Ru-nanoclusters modulated surfaces. Various PLIL parameters...