Browsing by Author "Han, Dong Suk"
Now showing items 1-20 of 49
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A solar desalination charger for water treatment and value-added chemical production
( Royal Society of Chemistry , 2024 , Article)This study presents a photoelectrocatalytic desalination charger for the remediation of aquatic pollutants and the production of value-added chemicals. Under 1 sun irradiation, a Co-WBVO (BiVO4 doped with W and deposited ... -
Advanced degradation of organic substance in water using no-ferric Fenton reaction on Titania nanotube
( Qatar University Press , 2020 , Poster)Highly reactive OH radicals facilitate advanced oxidation processes (AOPs) [1]. AOPs are irreplaceable in environmental remediation including but not limited to pollutant degradation [2]. H2O2 leading to OH radicals in ... -
Atmospheric water harvesting by osmotic distillation and direct contact membrane distillation using hydrophobic hollow fiber membranes
( Elsevier , 2024 , Article)The use of a liquid desiccant air dehumidifier is an energy-efficient technology that can improve both indoor air temperature and humidity. However, the risk of concentrated liquid desiccant leakage into the air conditioning ... -
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) ... -
Chemistry and Electrochemistry | Lithium
( Elsevier , 2025 , Book chapter)Lithium is a chemical element that heads the alkali group of metals with the chemical symbol Li and an atomic number of 3. It is a soft, lustrous, white-silverish metal that has the lowest density of all metals or solids. ... -
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 ... -
Control of the antagonistic effects of heat-assisted chlorine oxidative degradation on pressure retarded osmosis thin film composite membrane surface
( Elsevier , 2021 , Article)During pressure retarded osmosis (PRO) operation, thin film composite (TFC) membranes are continuously exposed to chemicals present in the stream that can deteriorate the membrane's selective layer with exposure time. ... -
Deactivation-Tolerance of Heterojunction Anatase and Bronze TiO2 in the Photocatalytic Mineralization of Toluene
( American Chemical Society , 2024 , Article)Heterojunctioning anatase (A) and rutile (R) TiO2 is considered a benchmark strategy for high photocatalytic activity. In this study, we synthesized heterojunctions of anatase (A) and bronze (B) TiO2 via hydrothermal and ... -
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 ... -
Efficient solar-powered PEM electrolysis for sustainable hydrogen production: an integrated approach
( Springer Nature , 2024 , Article)The coupling of photovoltaics (PVs) and PEM water electrolyzers (PEMWE) is a promising method for generating hydrogen from a renewable energy source. While direct coupling is feasible, the variability of solar radiation ... -
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 ... -
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 and Novel LiAlO2 Film Electrodes for Energy Efficient Li recovery from Seawater Reverse Osmosis (SWRO) Brine
( Qatar University Press , 2021 , Poster)Concentration of Li in seawater is too low at 0.17 ppm despite its high content altogether with a reported 230 billion tons. Hence, seawater is not a practical source to recover Li from; Li is largely extracted by solar ... -
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 ... -
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 ...
