Article
Engineering, Chemical
Qiushi Wei, Jolie M. Lucero, James M. Crawford, J. Douglas Way, Colin A. Wolden, Moises A. Carreon
Summary: ZIF-21 membranes were synthesized for the separation of ammonia from nitrogen and hydrogen, with high permeances and selectivities. The key separation mechanisms were identified as differences in adsorption and diffusivities, along with the polar-polar interaction between ammonia and the linker polar channels.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Yong Pan, Chen Zhu, Pei Fu, Wenbin Zeng, Chi Chen, Baoming Xu
Summary: By optimizing operating conditions using response surface methodology, the separation performance of S-ZIF-90/polydimethylsiloxane hybrid membranes for pervaporation was improved. Regression equations were established to predict and optimize separation performance, and the effects of variables on permeation flux and separation factor were analyzed.
CHEMICAL ENGINEERING & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yue Zhang, Rong Deng, Ling Yuan, Chaoqi Zhang, Jing Wang, Chao Liu
Summary: This work reports the construction of zinc-based zeolite imidazole framework (ZIF-8) microrings through an anisotropic growth-etching route. The method involves the deposition of ZIF-8 crystals on the edges of leaf-like ZIF-L nanosheets with coordinatively unsaturated Zn2+ and subsequent selective etching of alkaline unstable ZIF-L. Additionally, functional carbon materials with a ring-like structure can be prepared by pyrolysis of ZIF-8 microrings, exhibiting improved performance in oxygen reduction reaction. These findings may pave the way for the design of MOFs with sophisticated micro/nanostructures.
Article
Chemistry, Analytical
Lidi Gao, Hongshou Cui, Xinyu Guo, Qing Dong, Xingyu You, Xinshu Guo, Shili Qin, Lihua Jia
Summary: A zeolitic imidazolate framework (ZIF)-8-silica hybrid monolithic column with excellent reproducibility and stability was prepared. It was characterized by various techniques and showed abundant functional groups, good crystallinity, large specific surface area, and good thermal stability. When applied in capillary electrochromatography (CEC), the ZIF-8-silica hybrid monolithic column achieved baseline separation of single analytes and simultaneous enantioseparation of mixed amino acids, demonstrating its promising potential for chiral compound separation.
Article
Engineering, Chemical
Heng Mao, Shen-Hui Li, Li-Hao Xu, Sen Wang, Wei-Min Liu, Ming-Yu Lv, Jing Lv, Zhi-Ping Zhao
Summary: This study fabricated highly permeable mixed matrix membranes by regulating the structure and morphology of zeolitic imidazolate frameworks fillers, showing excellent performance in phenolic wastewater treatment.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Applied
Yong Pan, Rui Xie, BaoMing Xu, Chi Chen
Summary: The surface hydrophobicity-hydrophilicity properties play crucial roles in the separation performance of membranes. S-ZIF-90/PDMS MMMs exhibit superior hydrophobicity and separation performance for ethanol permselective pervaporation, making them promising for practical applications in organic system recovery from aqueous solution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Energy & Fuels
Hao Wu, Tze Hao Tan, Rugeng Liu, Hsien-Yi Hsu, Yun Hau Ng
Summary: The study introduces a new type of material, ZnO@ZIF-8 composite, which acts as an efficient photothermocatalyst for ethanol oxidation to acetaldehyde, demonstrating high selectivity and durability.
Article
Chemistry, Inorganic & Nuclear
Louis Longley, Courtney Calahoo, Thomas J. F. Southern, Rachel C. Evans, Lothar Wondraczek, Thomas D. Bennett
Summary: The research investigated the thermal behavior of ZIF-8 in the presence of a sodium fluoroaluminophosphate glass melt using differential scanning calorimetry and thermogravimetric analysis, and determined the structural integrity of ZIF-8 through a combination of powder X-ray diffraction, Fourier transform infrared, and H-1 nuclear magnetic resonance spectroscopy.
DALTON TRANSACTIONS
(2021)
Article
Nanoscience & Nanotechnology
Elham Chamanehpour, Mohammad Hossein Sayadi, Mahmood Hajiani
Summary: Metal-organic frameworks are highly efficient photocatalysts for CO2 photoreduction. The g-C3N4@Cu/ZIF-8 nanocomposite showed significant improvement in CH3OH production performance compared to ZIF-8, attributed to increased surface area, decreased electron-hole recombination rate, improved conductivity, and increased CO2 adsorption capacity. Reusability testing indicated a decrease in degradation efficiency of CO2 photoreduction from 82.1 to 71.8% after 5 reuses of the nanocomposite.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Theany To, Soren S. Sorensen, Yuanzheng Yue, Morten M. Smedskjaer
Summary: This study reveals that three zeolitic imidazolate framework glasses exhibit pronounced nanoductility upon fracture, indicating a significant deviation from the traditional brittle fracture model.
DALTON TRANSACTIONS
(2021)
Article
Energy & Fuels
Zhuo Peng, Hanbo Zou, Wei Yang, Zhiwei Feng, Shengzhou Chen
Summary: Hierarchical porous Co9S8 nanowire arrays grown on Ni foam with the sacrificial template of ZIF were successfully synthesized, exhibiting excellent electrochemical performance. The Co9S8/NF electrode showed good specific capacitance and retention rate, maintaining a high specific capacitance even after 5000 cycles. Additionally, an ASC assembled with Co9S8/NF as the positive electrode also achieved satisfactory results.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Applied
Chenjie Li, Yulin Ding, Wei Xu, Minyu Li, Wenmu Li
Summary: Introducing CO2 affinity additives into membranes is an effective method to enhance CO2 permeability for natural gas sweetening. In this study, high performance mixed-matrix membranes were successfully prepared using cellulose acetate (CA) as the matrix and zeolitic tetrazolate-imidazolate frameworks (ZTIFs) with high CO2 affinity as the additive. The interaction between CA matrix and ZTIFs was confirmed by FT-IR. The morphology properties of the membranes were evaluated using SEM, EDS, and XRD. The CO2 permeability of CA/ZTIFs mixed-matrix membranes, which depended on the loading of high CO2 affinity ZTIF additive, ranged from 9.59 to 15.85 Barrer, indicating the significant role of ZTIFs in altering CO2 dissolution and diffusion behavior inside the membranes. The ideal compatibility and gas selectivity highlight the promising potential of ZTIFs additives in gas separation applications.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Review
Chemistry, Inorganic & Nuclear
Yi Feng, Huanting Wang, Jianfeng Yao
Summary: 2D ZIF nanosheets combine the advantages of ZIFs and porous layer structure, exhibiting unique chemical properties and superior performance; calcination or carbonization can produce 2D ZIF-derived materials with new properties; the review focuses on the structure, synthesis methods, applications, challenges, and future prospects of 2D ZIF and 2D ZIF-derived nanosheets.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Yizhi Xu, Joseph M. Marrett, Hatem M. Titi, James P. Darby, Andrew J. Morris, Tomislav Friscic, Mihails Arhangelskis
Summary: First-principles crystal structure prediction (CSP) is a powerful method for discovering new materials by predicting and evaluating their properties based on the underlying components. In this study, metal-organic frameworks (MOFs) were discovered using CSP, providing an alternative to conventional techniques relying on geometry and experimental screening. Experimental validation of the CSP procedure was done by synthesizing materials with structures matching the lowest-energy calculated structures, and properties such as combustion energies were evaluated from the CSP-derived structures.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Xinyue Wu, Qingling Jing, Fancheng Sun, Huan Pang
Summary: This study reports a simple ion-exchange method to prepare ZIF-67/PBA heterostructure composites, which possess excellent electrochemical characteristics and are applied in supercapacitors. The composites show great rate capability and cycling stability, demonstrating the potential of dual-MOF heterostructure composites as electrode materials.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Composites
R. Anbarasan, K. Dheepak Vishnu, Kuo-Lun Tung
Summary: In this study, a PSu-g-PVC-g-2MI/Cu2O nanocomposite was synthesized through chemical grafting and catalyst reaction, and fully characterized and analyzed. The experimental results showed that the synthesized material has high thermal stability and hydrophilicity.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Shao-Chi Tsai, Wei-Zhi Huang, Geng-Sheng Lin, Zhen Wang, Kuo-Lun Tung, Ching-Jung Chuang
Summary: The study establishes theoretical models for specific energy consumption (SEC) in different integrated processes for water recovery. The models can evaluate SEC under different water recovery conditions and proportions of supplied waste heat. Simulation results show that SEC in RO increases with the water recovery rate, but an opposite trend can be observed at lower water recovery rates. Integrating MD with RO or RO-PRO can significantly reduce SEC.
Article
Chemistry, Analytical
Yi-Jui Yeh, Trong-Nghia Le, Wesley Wei-Wen Hsiao, Kuo-Lun Tung, Kostya (Ken) Ostrikov, Wei-Hung Chiang
Summary: In this study, a rapid, sensitive, and selective detection method for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was developed based on surface-enhanced Raman scattering (SERS) using plasma-engineered, variant-specific antibody-functionalized silver microplasma-engineered nanoassemblies (AgMEN). The 3D porous AgMEN with plasmonic-active nanostructures provided high sensitivity to virus detection through remarkable SERS signal collection. The variant-specific antibody-functionalization on the SERS-active AgMEN enabled high selectivity for different SARS-CoV-2 variants under simulated human saliva conditions. This versatile SERS-based detection platform can be applied for ultrasensitive detection of virus variants, infectious diseases, and cancer biomarkers.
ANALYTICA CHIMICA ACTA
(2023)
Article
Engineering, Chemical
R. Anbarasan, A. Thamizhlarasan, Yu-Cheng Liu, Kuo-Lun Tung
Summary: A low cost and high efficiency SA/V2O5 nanocomposite catalyst was synthesized by chemically linking V2O5 catalyst and SA polymer. The formation of the bio-polymer nanocomposite was confirmed using FT-IR spectroscopy, 1H-NMR spectroscopy, DSC (Tg), TGA (Td), and HR-TEM. The catalytic activity of the SA/V2O5 nanocomposite catalyst was tested in C, N cross coupling reaction and reduction of EB dye.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Polymer Science
Soon-Chien Lu, Thakorn Wichidit, Thanitporn Narkkun, Kuo-Lun Tung, Kajornsak Faungnawakij, Chalida Klaysom
Summary: Aminosilane functionalization is used to improve the dispersion and adhesion of nano-sized zeolite Y (ZeY) particles in polyether block amide (Pebax). The addition of 5 wt.% of aminosilane-modified zeolite Y (Mo-ZeY) enhances the gas permeability and CO2/CH4 separation factor of Pebax mixed matrix composite hollow fiber membranes by over 100% and 35% respectively.
Article
Biochemistry & Molecular Biology
Mohd Jahir Khan, Zoheb Karim, Boonya Charnnok, Thiprada Poonsawat, Pattaraporn Posoknistakul, Navadol Laosiripojana, Kevin C. -W. Wu, Chularat Sakdaronnarong
Summary: This study explored the utilization of composite membranes made from post-consumer cotton fabrics and palm waste for wastewater treatment. Cellulose nanofibers were produced from waste cotton fabrics and filter paper, and the characteristics of the membranes were analyzed. The membrane made from palm waste had the highest dye removal efficiency, reaching 23% for Congo red and 44% for methylene blue.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Hsin-Han Hou, Bor-Shiunn Lee, Yu-Cheng Liu, Yi-Ping Wang, Wei-Ting Kuo, I-Hui Chen, Ai-Chia He, Chern-Hsiung Lai, Kuo-Lun Tung, Yi-Wen Chen
Summary: This study aimed to create zinc (Zn)-, strontium (Sr)-, and magnesium (Mg)-multidoped hydroxyapatite (HAp) porous coatings on titanium discs and implants using the VIPF-APS technique. The results showed that the Zn-Sr-Mg-HAp group exhibited the most effective induction of osteogenesis-associated genes expression and antibacterial effects against periodontal bacteria. Moreover, histologic and micro-CT analysis demonstrated that the Zn-Sr-Mg-HAp group had the most prominent osteogenesis and bone growth along implant threads. Therefore, porous Zn-Sr-Mg-HAp coating using VIPF-APS could be a novel technique for coating titanium implant surfaces and preventing bacterial infection.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Chemical
Yu-Rou Lai, Sher Ling Lee, Yun-Ke Liou, Yi-Fan Lin, Kuo-Lun Tung
Summary: The interfacial polymerization (IP) process is widely used for nanofiltration membranes and thin film composite (TFC) membranes due to its high selectivity and flexibility. In this study, a PA TFC membrane was fabricated on an alumina hollow fiber substrate by the polyamide IP process with the addition of arginine (Arg) as an additive, leading to higher stability for the IP process of PA membranes. The membrane showed excellent retention for commercial dyes, demonstrating potential industrial application for the removal of charged dyes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Yi-Jui Yeh, Wei Lin, Wei-Hung Chiang, Kuo-Lun Tung
Summary: Researchers have developed a thin-film nanocomposite membrane based on nitrogen-doped graphene quantum dots, which can achieve ultrahigh water transportation and purification efficiency. By controlling optical properties and tuning porous nanostructures, the membrane exhibits excellent water permeability and separation efficiency. The stable photoluminescence emission of the membrane enables monitoring of dye-fouling during water purification.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Acoustics
Yu Ogura, Keita Taniya, Takafumi Horie, Kuo-Lun Tung, Satoru Nishiyama, Yoshiyuki Komoda, Naoto Ohmura
Summary: This study synthesized UiO-66, a typical Zr-Metal Organic Framework (MOF), using an ultrasound-assisted synthesis method to reduce the synthesis time. Compared with the conventional solvothermal method, the ultrasound-assisted synthesis method resulted in smaller particle sizes ranging from 56 to 155 nm on average. The method also showed a faster increase in luminance and shorter induction time, indicating enhanced nucleation and particle growth.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Chemistry, Physical
Shang-Tien Tsai, Wei-Cheng Tang, Yeu-Kuen Wei, Kevin C. -W. Wu
Summary: The Ag(I) ion-containing ZIF-8 samples were synthesized using both the one-stage de novo synthesis method and impregnation method. Through de novo synthesis, Ag(I) ions could be located inside the micropores or adsorbed on the external surface of ZIF-8. The confinement effect of ZIF-8's micropore led to a much lower constant releasing rate of Ag(I) ions compared to those adsorbed on the external surface, which showed diffusion limitation.
Article
Engineering, Chemical
Yi-Jui Yeh, Jinn P. Chu, Jhen-De You, Ting-Hao Chang, Jr Rong Liou, Wei-Hung Chiang, Pakman Yiu, Chun-Hway Hsueh, Yu-Lin Shen, Kuo-Lun Tung
Summary: This study demonstrates the use of a stainless-steel nano-pyramid structure coated on a mixed cellulose ester membrane for the separation of oil/water emulsions. The coated membrane exhibited superhydrophilicity, antifouling properties, and underwater superoleophobicity. It achieved a high separation efficiency of >99% for various light oil-water emulsions. The fabrication process of the coated membrane is also scalable and suitable for industrial applications.
Article
Nanoscience & Nanotechnology
Yi-Jui Yeh, Chia-Jung Cho, Jean-Sebastien Benas, Kuo-Lun Tung, Chi-Ching Kuo, Wei-Hung Chiang
Summary: We developed a simple and environmentally friendly method to fabricate stretchable porous metal-organic nanocomposites with exceptional SERS enhancement and mechanical stability. These nanocomposites showed outstanding SERS enhancement and wide detection range for cancer biomarkers.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Chemical
Yu-Xian Lin, Yun-Ke Liou, Sher Ling Lee, Shao-Yu Chen, Fang-Ting Tao, Tung-Wen Cheng, Kuo-Lun Tung
Summary: With the increasing demand for freshwater, the study focuses on the preparation of a composite membrane for desalination using membrane distillation. The effects of different parameters on the membrane characteristics were investigated, and the advantages and disadvantages of different distillation methods were evaluated. The results showed that the membrane with higher PMMA content had larger pores and higher permeate fluxes. Water gap membrane distillation exhibited higher fluxes compared to air gap membrane distillation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Materials Science, Coatings & Films
Jinn P. Chu, Yi-Jui Yeh, Chih-Yu Liu, Yi-Xiang Yang, Alfreda Krisna Altama, Ting-Hao Chang, Wei-Hung Chiang, Pakman Yiu, Kuo-Lun Tung
Summary: In this study, highly ordered and periodic Ag/Au core-shell triangle nanotube arrays were used as an ultrasensitive and low-cost surface-enhanced Raman scattering (SERS) substrate for the first time. The Ag-core nanotubes overlaid with the Au-shell showed the highest Raman intensity and enhancement factor for the probe molecule R6G. The detection limits for R6G and ketoprofen analytes were determined to be 10(-10) and 10(-6) M, respectively. The metal nanotube arrays were found to act as effective plasmonic hotspots through Raman intensity mapping, making them useful for SERS sensing applications.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)