A5054098264- Electrochemical Analysis and Applications
- Radical Photochemical Reactions
- Electrochemical sensors and biosensors
- Conducting polymers and applications
- Analytical Chemistry and Sensors
- Electrocatalysts for Energy Conversion
- Microfluidic and Capillary Electrophoresis Applications
- Semiconductor materials and devices
- Catalytic C–H Functionalization Methods
- Catalytic Cross-Coupling Reactions
- Nanopore and Nanochannel Transport Studies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Sulfur-Based Synthesis Techniques
- CO2 Reduction Techniques and Catalysts
- Water Quality Monitoring and Analysis
- Fuel Cells and Related Materials
- X-ray Diffraction in Crystallography
- Silicon Nanostructures and Photoluminescence
- Chalcogenide Semiconductor Thin Films
- Ion-surface interactions and analysis
- Microfluidic and Bio-sensing Technologies
- Advanced Memory and Neural Computing
- Advancements in Transdermal Drug Delivery
- Nanocluster Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
University of North Carolina at Chapel Hill
2025
Korea Research Institute of Chemical Technology
2024
Seoul National University
2016-2022
The University of Texas at Austin
2011
Based on systematic electrochemical analysis, an integrated synthetic platform of C(sp3)-based organoboron compounds was established for the introduction heteroatoms. The electrochemically mediated bond-forming strategy shown to be highly effective functionalization sp3-hybridized carbon atoms with significant steric hindrance. Moreover, virtually all nonmetallic heteroatoms could utilized as reaction partners using one unified protocol. observed reactivity stems from two consecutive...
Semiconductor photoelectrodes are regularly coupled to solid-state heterogeneous catalysts perform solar-driven reduction of CO2. Less frequently, molecular employed better control the reactivity toward desired products, yet development robust semiconductor/molecule interfaces has proven challenging. Here, we demonstrate that a 2-3 nm thermal oxide layer on Si exhibits stability in aqueous solution, high photovoltage, and photocurrent density ∼10 mA/cm2 for photoelectrochemical homogeneous...
Electroosmotic pumps are arguably the simplest of all pumps, consisting merely two flow-through electrodes separated by a porous membrane. Most use platinum and operate at high voltages, electrolyzing water. Because evolved gas bubbles adhere block parts membrane, steady pumping rates difficult to sustain. Here we show that when replaced consumed Ag/Ag2O electrodes, well below 1.23 V, thermodynamic threshold for electrolysis water 25 °C, where neither H2 nor O2 is produced. The efficient: 13...
When a current or voltage is applied across the ceramic membrane of nongassing Ag/Ag(2)O-SiO(2)-Ag/Ag(2)O pump, protons produced in anodic reaction 2Ag(s) + H(2)O → Ag(2)O(s) 2H(+) 2e(-) are driven to cathode, where they consumed by 2 OH(-). The flow water induced momentum transfer from electric field-driven proton-sheet at surface membrane. About 10(4) molecules flowed per reacted electron. Because dissolved ions decrease field surface, decreases upon increasing ionic strength. For this...
It is important but challenging to elucidate the electrochemical reaction mechanisms of organic compounds using electroanalytical methods. Particularly, a rapid and straightforward method that provides information on intermediates or other key parameters may be useful. In this work, we exploited advantages classic thin-layer electrochemistry develop electroanalysis microchip (TEAM). The TEAM provided better-resolved voltammetric peaks than under semi-infinite diffusion conditions owing its...
Harnessing cathodic hydrogen atom generation, metals such as Pt, Pd, Cu, Au and Ni are directly electrodeposited on functionalized dielectric layers of 6 nm thick silicon oxide formed by thermal oxidation c-Si substrate. Modifying the layer with functional molecules nanoparticles simple wet chemistry, we can enhance electrodeposition efficiently thereby electroplate Pd Pt to obtain thin metal films. In particular, amine-modified oxides remarkably create sturdy films layer, n+-Si/SiO2-NH2....
Abstract Luminescent hexagonal dominant copper indium sulphide ( h -dominant CIS) quantum dots (QDs) by precursor-injection of mixed metal-dialkyldithiocarbamate precursors. Owing to the different reactivity precursors, this method allowed CIS QDs grow while retaining crystallinity nucleus. The photoluminescence (PL) spectra exhibited dual emission (600–700 nm red and 700–800 NIR emission) resulting from combined contributions (wurtzite) -CIS tetragonal (chalcopyrite) t QDs, i.e. emissions...
Significance The electrochemical reaction at the insulator is extraordinary. Despite its counterintuitiveness, it made possible by using a silicon oxide dielectric electrode as cathode. In this study, we use such to enable version of electroorganic reaction. Interestingly, oxidized products are produced cathode in case anthracene and derivatives. Besides, normal reduction also occurred nitrobenzene. We suggest electrochemically generated hydrogen species, supposedly atom, responsible for...
Based on systematic electrochemical analyses, an integrated synthetic platform of C(sp3)-based organoboron compounds was established for the introduction heteroatoms. The electrochemically mediated bond-forming strategy shown to be highly effective functionalization sp3-hybridized carbon atoms with significant steric hindrance. Moreover, virtually all nonmetallic heteroatoms could utilized as reaction partners using one unified protocol. observed reactivity stems from two consecutive...
Abstract Understanding the conducting mechanisms of dielectric materials under various conditions is increasing importance. Here, we report breakdown (DB) and post-breakdown mechanism Si/SiO 2 , a widely used semiconductor dielectric, in an acidic aqueous electrochemical environment. Cathodic was found to generate conduction spots on surface. Using scanning microscopy (SECM), size number are confirmed increase from nanometer micrometer scale during application negative voltage. The...
(Photo)electrochemical CO 2 reduction (CO R) has been of great interest not only for its promising route to economic, transportable, storable, and sustainable fuels,but also the fundamental study factors that impact identity reaction product(s). Among such well-behaved catalytic systems, pentamethylcyclopentadienyl-ligated Ir(III) half-sandwich complex with 2,2’-bipyridine derivatives is a representative class both electrochemical photochemical R catalysis reported. However,...
It is important but challenging to elucidate the electrochemical reaction mechanisms of organic compounds using electroanalytical methods. In this work, we exploited advantages classic thin-layer electrochemistry develop a electroanalysis microchip (TEAM). The TEAM provided better resolved voltammetric peaks than measurements under semi-infinite diffusion conditions. Importantly, because analyte solution was mechanically isolated polyelectrolyte gel, rapid small-volume electrolysis allowed...
Based on systematic electrochemical analyses, an integrated synthetic platform of C(sp3)-based organoboron compounds was established for the introduction heteroatoms. The electrochemically mediated bond-forming strategy shown to be highly effective functionalization sp3-hybridized carbon atoms with significant steric hindrance. Moreover, virtually all nonmetallic heteroatoms could utilized as reaction partners using one unified protocol. observed reactivity stems from two consecutive...
Abstract Electrochemistry of thermally grown silicon oxide can address many interesting features and it was further embellished by the development defective 200 nm thermal on highly n‐doped (n + ‐Si/SiO 2 ). However, there are still space to uncover underlying conduction mechanism applications, specifically for n electrode. These could be addressed direct electrodeposition, so various kinds metal nanocrystals, Fe, Cr, Ir, Ru, Co, Pd, Cu, Ni, Ag, were electrodeposited it. Their shapes...
Based on systematic electrochemical analysis, an integrated synthetic platform of C(sp3)-based organoboron com- pounds was established for the introduction heteroatoms. The electrochemically mediated bond-forming strategy shown to be highly effective functionalization sp3-hybridized carbon atoms with significant steric hindrance. Moreover, virtually all nonmetallic heteroatoms could utilized as reaction partners using one unified protocol. observed reactivity stems from two consecutive...
It is important but challenging to elucidate the electrochemical reaction mechanisms of organic compounds using electroanalytical methods. Particularly, a rapid and straightforward method may be helpful if it can provide information on intermediates or other key parameters. In this work, we exploited advantages classic thin-layer electrochemistry develop electroanalysis microchip (TEAM). TEAM provided better resolved voltammetric peaks than under semi-infinite diffusion condition owing small...
It is important but challenging to elucidate the electrochemical reaction mechanisms of organic compounds using electroanalytical methods. Particularly, a rapid and straightforward method may be helpful if it can provide information on intermediates or other key parameters. In this work, we exploited advantages classic thin-layer electrochemistry develop electroanalysis microchip (TEAM). TEAM provided better resolved voltammetric peaks than under semi-infinite diffusion condition owing small...
It is important but challenging to elucidate the electrochemical reaction mechanisms of organic compounds using electroanalytical methods. In this work, we exploited advantages classic thin-layer electrochemistry develop a electroanalysis microchip (TEAM). The TEAM provided better resolved voltammetric peaks than measurements under semi-infinite diffusion conditions. Importantly, because analyte solution was mechanically isolated polyelectrolyte gel, rapid small-volume electrolysis allowed...