تصفح حسب المؤلف "Han, Dong Suk"
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Advanced degradation of organic substance in water using no-ferric Fenton reaction on Titania nanotube
Elmakki, Tasneem; Zavahir, Fathima Sifani; Gulied, Mona; Ismail, Norhan; Hameed, Areeba; Han, Dong Suk... more authors ... less authors ( 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 ... -
Catalytic activity of photocharged binary TiO2 and WO3 membrane filters: Effect of Al2O3 interlayer on direct vs. mediated electron transfers
Jiyeon, Park; Kim, Bolam; Han, Dong Suk; Lim, Jonghun; Park, Hyunwoong ( 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
Arti, Mishra; Kim, Donghyun; Altahtamouni, Talal; Kasak, Peter; Popelka, Anton; Park, Hyunwoong; Han, Dong Suk... more authors ... less authors ( Elsevier Ltd , 2024 , Other)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
Ralph Rolly, Gonzales; Abdel-Wahab, Ahmed; Han, Dong Suk; Matsuyama, Hideto; Phuntsho, Sherub; Shon, Ho Kyong... more authors ... less authors ( 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. ... -
Effect of Fe/N-doped carbon nanotube (CNT) wall thickness on CO2 conversion: A DFT study
Sun Hee, Yoon; Park, Hyunwoong; Elbashir, Nimir O.; Han, Dong Suk ( 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 ... -
Electrocatalytic arsenite oxidation in bicarbonate solutions combined with CO2 reduction to formate
Wonjung, Choi; Kim, Minju; Kim, Byeong-ju; Park, Yiseul; Han, Dong Suk; Hoffmann, Michael R.; Park, Hyunwoong... more authors ... less authors ( 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
Byung Guk, Kim; Park, Jiyeon; Choi, Wonjung; Han, Dong Suk; Kim, Jungwon; Park, Hyunwoong... more authors ... less authors ( 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 ... -
Facile and Novel LiAlO2 Film Electrodes for Energy Efficient Li recovery from Seawater Reverse Osmosis (SWRO) Brine
Hafsa, Umme; Zavahir, Sifani; ElMakki, Tasneem; Ahmad, Zubair; Han, Dong Suk ( 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
Nath, Narayan Chandra Deb; Jeong, Hye Won; Han, Dong Suk; Park, Hyunwoong; Lee, Jae Joon ( 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
Park, Jiyeon; Lim, Jonghun; Park, Yiseul; Han, Dong Suk; Shon, Ho Kyong; Hoffmann, Michael R.; Park, Hyunwoong... more authors ... less authors ( 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)) ... -
Ion-Enhanced Conversion of CO2 into Formate on Porous Dendritic Bismuth Electrodes with High Efficiency and Durability
Piao, Guangxia; Yoon, Sun Hee; Han, Dong Suk; Park, Hyunwoong ( Wiley-VCH Verlag , 2019 , Article)Facile synthesis of efficient electrocatalysts that can selectively convert CO2 to value-added chemicals remains a challenge. Herein, the electrochemical synthesis of porous Bi dendrite electrodes and details of their ... -
Ion-imprinted membranes for lithium recovery: A review
Sifani, Zavahir; Riyaz, Najamus Sahar; Elmakki, Tasneem; Tariq, Haseeb; Ahmad, Zubair; Chen, Yuan; Park, Hyunwoong; Ho, Yeek-Chia; Shon, Ho Kyong; Han, Dong Suk... more authors ... less authors ( 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 ... -
Lithium capture in seawater reverse osmosis (SWRO) brine using membrane-based capacitive deionization (MCDI) system
Azam, Reem; ElMakki, Tasneem; Zavahir, Sifani; Ahmad, Zubair; Hijós, Gago Guillermo; Han, Dong Suk... more authors ... less authors ( Qatar University Press , 2021 , Poster)Lithium-battery based industries including vehicles, electronics, fusion and thermonuclear, consume lithium rapidly, which raises the need for developing a lithium recovery system. Lithium global market consumption in 2016 ... -
Membrane Distillation Crystallization Hybrid Process for Zero Liquid Discharge in QAFCO Plant
Gulied, Mona; Zavahir, Sifani; Elmakki, Tasneem; Qiblawey, Hazim; Hameed, Bassim; Han, Dong Suk... more authors ... less authors ( Qatar University Press , 2021 , Poster)Qatar fertilizer company (QAFCO) is one of the world’s largest single site producer of ammonia and urea with production capacity of 12,900 metric tons per day. Currently, QAFCO faces major challenges in terms of water ... -
Porous dendritic BiSn electrocatalysts for hydrogenation of 5-hydroxymethylfurfural
Piao, Guangxia; Yoon, Sun Hee; Cha, Hyun Gil; Han, Dong Suk; Park, Hyunwoong ( 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
Tasneem, Elmakki; Zavahir, Sifani; Gulied, Mona; Qiblawey, Hazim; Hammadi, Bassim; Khraisheh, Majeda; Shon, Ho Kyong; Park, Hyunwoong; Han, Dong Suk... more authors ... less authors ( 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 ... -
Pyrite (FeS2)-supported ultrafiltration system for removal of mercury (II) from water
Han, Dong Suk; Solayman, Kawsher M.D.; Shon, Ho Kyong; Abdel-Wahab, Ahmed ( Springer , 2021 , Article)This study investigated the Hg(II) removal efficiencies of the reactive adsorbent membrane (RAM) hybrid filtration process, a removal process that produces stable final residuals. The reaction mechanism between Hg(II) and ... -
Recent advances on humic acid removal from wastewater using adsorption process
Alomar, Tamara; Qiblawey, Hazim; Almomani, Fares; Al-Raoush, Riyadh I.; Han, Dong Suk; Ahmad, Nasir M.... more authors ... less authors ( Elsevier , 2023 , Article Review)Humic acid (HA) is a component of natural organic matter (NOM) with a high molecular weight and high complexity. The presence of humic acid in water raises serious concerns due to its toxicity and ability to form carcinogenic ... -
Reduced titania nanorods and Ni–Mo–S catalysts for photoelectrocatalytic water treatment and hydrogen production coupled with desalination
Seonghun, Kim; Han, Dong Suk; Park, Hyunwoong ( 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
Sifani, Zavahir; Elmakki, Tasneem; Gulied, Mona; Ahmad, Zubair; Al-Sulaiti, Leena; Shon, Ho Kyong; Chen, Yuan; Park, Hyunwoong; Batchelor, Bill; Han, Dong Suk... more authors ... less authors ( 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, ...