Article
Engineering, Chemical
Najib Meftah Almukhtar Omar, Mohd Hafiz Dzarfan Othman, Zhong Sheng Tai, Ahmed Omar Aswaye Amhamed, Erna Yuliwati, Mohd Hafiz Puteh, Tonni Agustiono Kurniawan, Mukhlis A. Rahman, Juhana Jaafar, Ahmad Fauzi Ismail
Summary: This study successfully modified the surface of hydrophilic mullite-stainless steel hollow fibre membranes to omniphobic properties. The prepared membranes exhibited superior characteristics compared to other reported membranes, including higher roughness, liquid entry pressure, and enhanced liquid repellence and contact angles towards different liquids.
Article
Engineering, Chemical
Mohd Haiqal Abd Aziz, Mohammad Arif Budiman Pauzan, Nur Aina Shazana Mohd Hisam, Mohd Hafiz Dzarfan Othman, Mohd Ridhwan Adam, Yuji Iwamoto, Mohd Hafiz Puteh, Mukhlis A. Rahman, Juhana Jaafar, Ahmad Fauzi Ismail, Tonni Agustiono Kurniawan, Suriani Abu Bakar
Summary: In this study, a superhydrophobic ball clay based ceramic hollow fibre membrane (HFM) was successfully developed by applying a coating onto the surface of the membrane. The coated membrane, PH/C8/ZnO-C8/HFM, exhibited superior superhydrophobic properties, wetting resistance, and salt rejection compared to the control C8/HFM. This research has significant implications for various applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Zhen Liu, Jingni Gao, Changfa Xiao
Summary: Superhydrophobic polypropylene hollow fiber membranes were fabricated using single- and multi-step atom transfer radical polymerization methods, with initial monomer dosages of 20% and 30% facilitating the production of superhydrophobic modified membranes. The single-step method showed higher stability in vacuum membrane distillation performance compared to the multi-step method.
Article
Engineering, Chemical
Saber Abdulhamid Alftessi, Mohd Hafiz Dzarfan Othman, Mohd Ridhwan Adam, Twibi Mohamed Farag, Azeman Mustafa, Takeshi Matsuura, Juhana Jaafar, Mukhlis A. Rahman, Ahmad Fauzi Ismail
Summary: Omniphobic silica sand ceramic hollow fiber membranes were successfully fabricated to reduce wetting and fouling in direct contact membrane distillation. Surface modification with SiNPs, fluorination, and PVDF-HFP coating led to high contact angles for all tested liquids and excellent anti-fouling resistance during DCMD operation. These membranes showed high fluxes, salt rejection, and potential for seawater desalination.
Article
Nanoscience & Nanotechnology
Prexa Shah, Youmin Hou, Hans-Juergen Butt, Michael Kappl
Summary: Membrane distillation (MD) is an important technique for brine desalination and wastewater treatment. Researchers have found that depositing a layer of polysiloxane nanofilaments on microporous membranes can increase the distillation rate and reduce membrane wetting and fouling. Compared to conventional hydrophobic membranes, these multiscale porous membranes exhibit superior fouling resistance and achieve higher distillation flux without the use of fluorinated compounds.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Sha Yu, Guodong Kang, Zhihao Zhu, Meiqing Zhou, Haijun Yu, Yiming Cao
Summary: Nafion-PTFE hollow fiber composite membranes show excellent anti-fouling and anti-wetting performance in vacuum membrane distillation, exhibiting stable flux and high salt rejection. The composite membrane improves anti-fouling properties and alleviates wetting phenomena caused by surfactants, with a pressure depression factor decreasing with increasing feed temperature.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Yi Yang, Xinfei Fan, Yuanlu Xu, Chengwen Song, Zonglin Pan, Yanming Liu
Summary: In this study, an all-in-one conductive hollow fiber membrane was fabricated, which exhibited high distillate flux and low energy requirement, as well as superior resistance to salt.
Article
Food Science & Technology
Helen Julian, Hafizh Rizqullah, Michael Armando Siahaan, I. Gede Wenten
Summary: The study found that membrane fouling and wetting occurred when using cane sugar model solution in SVMDC experiments, but sugar crystals were still successfully formed; However, extremely low flux and lack of crystal formation were observed when using raw sugarcane juice, due to the presence of impurities.
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2021)
Article
Engineering, Chemical
Li Liu, Zechun Xiao, Yongjie Liu, Xuemei Li, Huabing Yin, Alexey Volkov, Tao He
Summary: Membrane distillation technology has great potential in desalinating water streams, but fouling and scaling remain major challenges. Recent research has proposed a new understanding based on hydrodynamics, providing explanations and analysis frameworks for the fouling resistance of superhydrophobic and omniphobic membranes, offering new insights for addressing the challenges in membrane distillation technology.
Article
Engineering, Chemical
Yifei Tang, Kaixuan Sun, Xiongfei Du, Jian Zhao, Hanli Wang, Qinglin Huang
Summary: In this study, a fluorinated polyimide (FPI)/polytetrafluoroethylene (PTFE) nanofiber membrane was developed for vacuum membrane distillation (VMD). The membrane showed desirable superhydrophobicity and durability, and exhibited stable MD flux and excellent salt rejection during VMD process. The introduction of PTFE significantly increased the liquid entry pressure of the membrane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Hamid Fattahi Juybari, Mohammad Karimi, Rishabh Srivastava, Jaichander Swaminathan, David M. Warsinger
Summary: The study developed the first superhydrophobic composite electrospun asymmetric membrane using fluorinated graphite (FG). The membrane's asymmetric structure and composite coatings improved its performance. This membrane, with high contact angle, low sliding angle, high permeability, and high gained output ratio (GOR), is a promising choice for sustainable membrane distillation.
Article
Engineering, Chemical
Chuanshuai Dong, Yang Huang, Lizhi Zhang
Summary: This study aimed to establish a novel slug flow-enhanced vacuum membrane distillation (VMD) system to address polarization problem and investigate the influence of flow behaviors on MD process. The transmembrane permeate flux was intensified by 28.1% due to increased turbulence and intensified shear stress. The study also showed that the effect of slug flow on membrane fouling had two stages, with a significant reduction observed in conventional VMD system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Pooja Yadav, Ramin Farnood, Vivek Kumar
Summary: Researchers fabricated superhydrophobic electrospun nanofibrous membranes using silica nanoparticles and PVDF, achieving excellent wetting resistance and high permeability through a two-step modification process. The modified membranes demonstrated robust anti-wetting properties and superior salt rejection in membrane distillation applications.
Article
Engineering, Chemical
Jing Huang, Shuwei Cai, Yi Gao, Min Wang, Guorong Xu
Summary: This study presents a new method to improve the membrane performance in membrane distillation technology by adding 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES) to the polytetrafluoroethylene (PTFE) solution. The modified PFDTES-PTFE membrane showed excellent hydrophobicity and anti-wetting performances, with increased contact angle and improved salt rejection values.
DESALINATION AND WATER TREATMENT
(2022)
Article
Materials Science, Ceramics
Feihong Wang, Binbin Dong, Nianwang Ke, Mingye Yang, Ruochan Qian, Junwei Wang, Junling Yu, Luyuan Hao, Liangjun Yin, Xin Xu, Simeon Agathopoulos
Summary: Beta-Sialonmullite membranes with mullite whiskers on the surface were prepared through pressureless sintering and vapor-phase growth technology, exhibiting high performance in separating oil emulsions and excellent operational stability in membrane distillation. The membranes showed superhydrophobicity with a water contact angle of 165 degrees, making them promising for water treatment applications.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Feng Ye, Yanpeng Cao, Weiwei Han, Yakun Yang, Yuancheng Feng, Peng Liu, Chao Xu, Xiaoze Du, Woochul Yang, Guicheng Liu
Summary: A highly active RuO2IrO2 electrocatalyst with a 7/3 molar ratio between Ru and Ir was developed via dip-coating/calcination method. The catalyst showed the highest electrocatalytic activity for OER among composite samples. The nano dendrite-shaped RuO2IrO2 catalyst on carbon paper exhibited excellent OER performance in a single cell.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Materials Science, Ceramics
Kathalingam Adaikalam, S. Valanarasu, Atif Mossad Ali, M. A. Sayed, Woochul Yang, Hyun-Seok Kim
Summary: In this study, indium-doped zinc oxide (ZnO) thin films were coated onto glass and silicon substrates at different indium concentrations using the SILAR method. The crystalline structural, morphological, and elemental properties of the films were characterized using XRD, SEM, and EDAX techniques. The optical properties were analyzed using UV-vis optical absorption, photoluminescence, and Raman spectroscopy techniques. The results showed that the 2.5% indium-doped ZnO film exhibited improved transmittance and band gap, and the photosensor fabricated using this film showed the best response.
JOURNAL OF ASIAN CERAMIC SOCIETIES
(2022)
Article
Chemistry, Physical
Ren Ren, Guicheng Liu, Ji Young Kim, Ryanda Enggar Anugrah Ardhi, Minh Xuan Tran, Woochul Yang, Joong Kee Lee
Summary: Energy level matching and structural stabilization of semiconductor electrode materials are critical for improving the efficiency and durability of bifunctional catalysts for photo-enhanced rechargeable Zn-air batteries. We developed a photoactive bifunctional air-electrocatalyst comprising n-type g-C3N4 and p-type copper-doped ZIF67 (CuZIF-67) composite. It exhibits wide-range solar spectrum absorption and enhanced electron-hole pairs separation efficiency, leading to higher oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) activities compared with single p-and n-type catalysts. It has photo-enhanced charge/discharge abilities and stable cycling performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Multidisciplinary
Lingyun Xiong, Hao Fu, Weiwei Han, Manxiang Wang, Jingwei Li, Woochul Yang, Guicheng Liu
Summary: In this study, a ZnS passivation layer with controlled thickness was fabricated on the surface of Zn metal to obtain a Zn@ZnS electrode. The electrode exhibited excellent anti-corrosion properties, suppressed dendrite growth, and showed long service life and superb rate performance.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Rui Wang, Lifan Wang, Yujie Fan, Woochul Yang, Chun Zhan, Guicheng Liu
Summary: This article discusses the possibility of using cobalt-free cathode materials in commercial lithium-ion batteries. Cobalt plays a double-edged role in the cathode, facing challenges of structural degradation, capacity degradation, and thermal instability. Additionally, the high cost and unstable supply of cobalt are limiting factors. Research on cobalt-free cathode materials is important for reducing costs and improving battery performance.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Kai Yang, Yixue Duan, Guicheng Liu, Guoyan Ma, Hao Fu, Xuyong Chen, Manxiang Wang, Gangqiang Zhu, Woochul Yang, Yiding Shen
Summary: In this study, a zinc-rich maleic anhydride epoxy coating with uniform carbon-coated ZnS nanoballs as smart active release filler was proposed. The nanoballs effectively reduced the water vapor transmission rate, increased electron transmission paths, activated more Zn-sites and achieved intelligent self-healing during corrosion.
Article
Materials Science, Multidisciplinary
Kai Yang, Hao Fu, Yixue Duan, Manxiang Wang, Minh Xuan Tran, Joong Kee Lee, Woochul Yang, Guicheng Liu
Summary: 47 nm-sized ZnS@NCs were successfully synthesized via a one-pot hydrothermal process, and the covalent bonds between the ZnS core and elastic carbon shell significantly improved the mechanical and chemical stabilities of ZnS@NC. ZnS@NC exhibited high reversible capacity and superior rate performance, and this synthesis strategy was also successfully applied to the synthesis of other TMS@NCs.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Hao Fu, Lingyun Xiong, Weiwei Han, Manxiang Wang, You Joong Kim, Xinyang Li, Woochul Yang, Guicheng Liu
Summary: The study presents a method for developing stable thermodynamics and fast kinetics in Zn metal anodes by selectively reacting weak oxidants to crystal planes, leading to the formation of a thermodynamically stable ZnMoO4 passivation layer. The method improves the reaction kinetics and inhibits corrosion and side reactions, making it valuable for constructing metal electrodes with fast kinetics and stable thermodynamics.
ENERGY STORAGE MATERIALS
(2022)
Article
Engineering, Environmental
Weiwei Han, Hankyu Lee, Yuzhen Liu, Youjoong Kim, Huaqiang Chu, Guicheng Liu, Woochul Yang
Summary: In this study, a novel type of nanosized and functionalized graphene quantum dots (F-GQDs) are decorated on a zinc anode to improve the electrochemical performance. The F-GQDs can regulate the plating/stripping process of zinc and enhance the rate capability and long-term cycling performance when coupled with MnO2 cathodes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Syed Taj Ud Din, Wan-Feng Xie, Woochul Yang
Summary: Three-dimensional hierarchical microspheres of Bi12O17Cl2 (BOC) were fabricated for photocatalytic degradation of pollutants. The photocatalytic performance was enhanced by synthesizing Co3O4 nanoparticles-decorated BOC heterostructures. The hierarchical heterostructure exhibited high surface area and improved photocatalytic efficiency by suppressing the recombination of electron-hole pairs.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Lingyun Xiong, Youjoong Kim, Hao Fu, Weiwei Han, Woochul Yang, Guicheng Liu
Summary: This study successfully achieved reversible and uniform deposition of Zn metal by constructing F-doped carbon nanoparticles (FCNPs) on substrates through plasma-assisted surface modification. The FCNPs acted as nucleation assistors, improving Zn plating kinetics and resulting in uniform Zn deposition. Additionally, the ZnF2 solid electrolyte interface contributed to rapid mass transfer and enhanced Zn reversibility while suppressing side reactions. This ingenious surface modification broadens revolutionary methods for uniform metallic deposition and enables dendrite-free rechargeable battery systems.
Article
Chemistry, Physical
Zhuohong Xie, Woncheol Seo, Syed Taj Ud Din, Hankyu Lee, Changchang Ma, Woochul Yang
Summary: Solar-driven CO2 conversion into chemical fuels using photocatalysts is a sustainable method for renewable energy. However, the low photocatalytic activity is limited by poor photoabsorption, low charge separation efficiency, and sluggish interfacial reaction. To address this issue, a mesh cladding structure of Sr-doped LaFeO3/Bi4O5Br2 photocatalyst with abundant surface oxygen vacancies (OVs) is developed. The optimized photocatalyst with appropriate Sr doping and BOB content shows a considerable methane generation, which is significantly higher than the pristine LFO.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Physical
Lingyun Xiong, Hao Fu, Kai Yang, Ji Young Kim, Ren Ren, Joong Kee Lee, Woochul Yang, Guicheng Liu
Summary: A reversible heterogeneous electrode of Zn-nanocrystallites/polyvinyl-phosphonic acrylamide (Zn/PPAm) with fast electrochemical kinetics is designed to address the poor reversibility of Zn-metal anodes. The electrode utilizes phosphonic acid groups, hydrophobic carbon chains, and weak electron-donating amide groups to ensure structural reversibility, suppress side reactions, and promote Zn2+ transport. The heterostructure and Zn nanocrystallites further enhance electrochemical reactivity. The Zn/PPAm electrode exhibits excellent cycle reversibility and durability in symmetrical cells and fiber-shaped batteries.
Article
Engineering, Environmental
Hao Fu, Yuzhen Liu, Zhuohong Xie, Youjoong Kim, Ren Ren, Woochul Yang, Guicheng Liu
Summary: A Zn@SiC electrode with an Ohmic contact is reported, which exhibits excellent durability and enhanced electrode process kinetics, and plays a critical role in achieving high-performance aqueous Zn-metal batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Ling-Yun Xiong, You-Joong Kim, Won-Cheol Seo, Han-Kyu Lee, Woo-Chul Yang, Wan-Feng Xie
Summary: In this study, Co3O4/reduced graphene oxide (rGO) nanocomposite was successfully used as a modified electrochemical electrode for the detection of trace glucose. The Co3O4/rGO modified electrode exhibited high sensitivity, low detection limit, and fast response time, making it a promising candidate for practical electrochemical biosensors.
Article
Engineering, Chemical
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
