Browsing by Author "Park, Hyunwoong ()"
Now showing items 1-20 of 25
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Catalytic activity of photocharged binary TiO2 and WO3 membrane filters: Effect of Al2O3 interlayer on direct vs. mediated electron transfers
( Elsevier , 2022 , Article)One of the challenges facing the practical application of photocatalysis is the termination of catalytic reactions in the absence of irradiation. This study synthesizes photo-charged TiO2/WO3 (TW) and TiO2/Al2O3/WO3 (TAW) ... -
A comparative study on carbon neutral hydrogen carrier production: Formic acid from CO2 vs. ammonia
( Elsevier Ltd , 2024 , Article Review)Hydrogen (H2) is increasingly recognized as a key player in the journey towards carbon neutrality, with ammonia (NH3) and formic acid (FA) emerging as significant hydrogen vectors. This review highlights advancements in ... -
Effect of Fe/N-doped carbon nanotube (CNT) wall thickness on CO2 conversion: A DFT study
( Elsevier , 2020 , Article)Many researches on CO2 adsorption using carbon nanotubes (CNTs) have been actively studied, but experimental and theoretical studies on CO2 conversion are still in demand. In particular, the effect of CNT wall thickness ... -
Efficient lithium recovery from simulated brine using a hybrid system: Direct contact membrane distillation (DCMD) and electrically switched ion exchange (ESIX)
( Elsevier , 2024 , Article)Seawater reverse osmosis (SWRO) brine is a readily available resource hub in many countries, fulfilling the country's freshwater need by SWRO, yet lower in a concentration of high-demand elements like Li. This study outlines ... -
Electrocatalytic activity of nanoparticulate TiO2 coated onto Ta-doped IrO2/Ti substrates: Effects of the TiO2 overlayer thickness
( Elsevier , 2021 , Article)The trade-off between short-term efficiency and long-term durability in electrocatalysis has always been a tough choice. This study examines the electrocatalytic activity of double-layered oxide electrodes comprising a ... -
Electrocatalytic arsenite oxidation in bicarbonate solutions combined with CO2 reduction to formate
( Elsevier , 2020 , Article)Sunlight-driven water-energy nexus technologies are receiving increasing attention. This study presents a hybrid electrochemical system that catalyzes the oxidation of As(III) to As(V) with a nanoparticulate TiO2 electrocatalyst ... -
Electrocatalytic arsenite oxidation using iron oxyhydroxide polymorphs (α-, β-, and γ-FeOOH) in aqueous bicarbonate solution
( Elsevier , 2020 , Article)α-, β-, and γ-FeOOH polymorphs have been synthesized and used for electrocatalytic As(III) oxidation into less toxic As(V) in aqueous bicarbonate solution. As-synthesized FeOOH electrodes exhibit unique crystalline structures ... -
Electrocatalytic carbon dioxide conversion to formate using gas-diffusion electrodes with group 12–15 metals
( Elsevier , 2024 , Article)The group 12−15 metals of the periodic table are considered promising catalysts for the electrochemical conversion of CO2 to formate. The activities of these metals are estimated and compared using bulk metals (i.e., metal ... -
Electrocatalytic conversion of ethylene to ethylene oxide mediated by halide oxidation: Chloride vs. Bromide vs. Iodide
( Elsevier , 2024 , Article)Ethylene oxide (EO) is among the most extensively used chemicals and is conventionally produced via the thermochemical oxidation of ethylene. This study demonstrates that a Pt-doped RuO2 and TiO2 composite (Pt-RuO2/TiO2) ... -
Enhanced lithium separation from brines using nanofiltration (NF) technology: A review
( Elsevier , 2024 , Article)This study investigates the dynamics of the lithium (Li) market, focusing particularly on the use of nanofiltration (NF) membranes for Li extraction from various brines. It covers a range of aqueous resources, including ... -
Facile Electrochemical Synthesis of Highly Efficient Copper-Cobalt Oxide Nanostructures for Oxygen Evolution Reactions
( Electrochemical Society , 2020 , Article)Nanostructured copper-cobalt oxide (CuxCo3-xO4, CCO) electrodes are grown directly on conducting substrates via electrochemical deposition; then, various factors (e.g., oxygen vacancies, electrochemically active surface ... -
Fouling and performance of outer selective hollow fiber membrane in osmotic membrane bioreactor: Cross flow and air scouring effects
( Elsevier , 2019 , Article)This study assessed impacts of cross-flow velocity (CFV) and air scouring on the performance and membrane fouling mitigation of a side-stream module containing outer-selective hollow fiber thin film composite forward osmosis ... -
In Situ-Generated Reactive Oxygen Species in Precharged Titania and Tungsten Trioxide Composite Catalyst Membrane Filters: Application to As(III) Oxidation in the Absence of Irradiation
( American Chemical Society (ACS) , 2020 , Article)This study demonstrates that in situ-generated reactive oxygen species (ROSs) in prephotocharged TiO2 and WO3 (TW) composite particle-embedded inorganic membrane filters oxidize arsenite (As(III)) into arsenate (As(V)) ... -
Integrated seawater hub: A nexus of sustainable water, energy, and resource generation
( Elsevier , 2024 , Article)This review paper explores the potential for seawater desalination plants to operate as integrated hubs for addressing the increasing demand for water, energy, mineral resources, and foods, particularly in resource-scarce ... -
Integrating green hydrogen production with renewable energy-powered desalination: An analysis of CAPEX implications and operational strategies
( Elsevier , 2024 , Article)The study examines how sustainable energy transitions can meet freshwater needs in green hydrogen production. It proposes four configurations that combine polymer electrolyte membrane (PEM) water electrolysis with renewable ... -
Ion-imprinted membranes for lithium recovery: A review
( Elsevier , 2024 , Article)This review critically examines the effectiveness of ion-imprinted membranes (IIMs) in selectively recovering lithium (Li) from challenging sources such as seawater and brine. These membranes feature customized binding ... -
Porous dendritic BiSn electrocatalysts for hydrogenation of 5-hydroxymethylfurfural
( Royal Society of Chemistry , 2022 , Article)The electrocatalytic hydrogenation of 5-hydroxymethylfurfural (HMF) to 2,5-bis(hydroxymethyl)furan (BHMF) is an alternative to conventional heterogeneous catalysis with H2 at high temperatures and pressures. Although Ag ... -
Potential application of hybrid reverse electrodialysis (RED)-forward osmosis (FO) system to fertilizer-producing industrial plant for efficient water reuse
( Elsevier , 2023 , Article)This study presents an experimental investigation and a parametric analysis of the applicability of agricultural fertigation and power generation using a reverse electrodialysis-forward osmosis (RED-FO) hybrid system, with ... -
Reduced titania nanorods and Ni–Mo–S catalysts for photoelectrocatalytic water treatment and hydrogen production coupled with desalination
( Elsevier , 2020 , Article)This study presents a ternary hybrid solar desalination process coupled with photoelectrocatalytic water treatment and H2 production in a single device. The desalination of brackish water in the desalination cell is initiated ... -
A review on lithium recovery using electrochemical capturing systems
( Elsevier , 2021 , Article Review)Resource recovery from natural reserves is appealing and Li extraction from different brines is in the forefront. Li extraction by membranes is reviewed in the literature much more than electrochemical processes. However, ...
