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
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.
Review
Energy & Fuels
Qi Ding, Sui Zhang
Summary: The separation of propylene and propane is crucial in the petrochemical industry, but current methods are energy-intensive. Metal-organic frameworks and membrane-based separation offer energy-saving alternatives. This review discusses the progress in propylene/propane separation using MOFs and MOF-based membranes, including different separation mechanisms and material design principles. It also outlines the challenges and opportunities in practical propylene/propane separation using MOFs.
Article
Energy & Fuels
Anil Ronte, Phadindra Wagle, Ghader Mahmodi, Mounika Chevula, Shailesh Dangwal, Mohammad Reza Saeb, Jong Suk Lee, David N. Mcllroy, Seok-Jhin Kim
Summary: A thin ZIF-8 membrane was successfully synthesized using an effective vapor-phase technique, which involved converting a ZnO layer to ZIF-8. This membrane exhibited high selectivity and permeability for propylene/propane separation.
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
Chemistry, Analytical
Zhuo Sun, Juan Lu, Xin Zhang, Xiangyu Shan, Qian Wu, Yingjie Zhao, Li Tian
Summary: This study demonstrates the use of ZIF-8 NF as an ECL accelerator for the detection of terbutaline residual and fabricates a novel ECL sensor based on ZIF-8 NF. The method shows high sensitivity, good stability, and applicability to actual samples.
Article
Chemistry, Physical
Yonghang Zhou, Kang Zhang, Tian-shun Song, Jingjing Xie
Summary: In this study, the performance of microbial electrosynthesis (MES) was improved by modifying the cathode with ZIF-8 particles of different pore sizes. The ZIF-8 modified electrode achieved a higher acetate production rate and concentration compared to the bare cathode. The high CO2 adsorption capacity of ZIF-8 and its beneficial effects on biofilm formation and bacteria enrichment contributed to the improved performance of MES.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(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, Applied
Marcia Andrade, Andrew J. Parnell, Gabriel Bernardo, Adelio Mendes
Summary: Novel carbon adsorbents were prepared for propane/propylene separation, showing unprecedented adsorption selectivity to propane, attributed to the shape and size of the pores and the rigidity of propylene compared with propane. The best performing sample, MFF_8, with rod-shaped pores, holds great potential for separations of adsorbates displaying different worming performances.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
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
Green & Sustainable Science & Technology
Wenhao Xia, Siew Kei Lau, Wai Fen Yong
Summary: This study investigated the environmental impacts of different synthesis methods for ZIF-8 through life cycle assessment (LCA), with a focus on the contribution of solvents. The findings showed that replacing the solvent DMF with methanol could significantly reduce the impact on human health, ecosystem, and resources. The mechanochemical method had the least environmental impact due to its simplicity and fewer production steps.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Applied
Nadhem Missaoui, Mohamed Bouzid, Amani Chrouda, Hamza Kahri, Houcine Barhoumi, Ai Ling Pang, Mohsen Ahmadipour
Summary: The aim of this study was to investigate CO2 adsorption on the highly porous ZIF-8. Characterization of ZIF-8 was done through techniques such as X-ray diffraction, scanning electron microscopy, TGA analysis, and N2 adsorption-desorption isotherms. Adsorption isotherms were obtained at different temperatures (273 K, 298 K, 323 K, and 353 K). A new model based on multilayer with saturation was simulated and interpreted. Physicochemical parameters describing the CO2 adsorption process and thermodynamic functions governing the adsorption process were determined. The results showed that CO2 adsorption on ZIF-8 was spontaneous and exothermic.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Xiao Mi, Juan Lu, Mingran Dong, Yang Lou, Xia Zhan, Xi Chen
Summary: Dihydromyricetin (DHM) holds potential as an antitumor agent, but its low bioavailability limits its clinical application. In this study, DHM@ZIF-8 nanoparticles were developed using ZIF-8 as a carrier to enhance its antitumor activity. The nanoparticles exhibited a regular morphology with a suitable particle size and a high drug release rate in a simulated tumor micro acid environment. Compared to the prodrug, DHM@ZIF-8 showed increased killing effect on HepG2 cells, along with enhanced removal of ROS, promotion of apoptosis, and significant modulation of apoptosis-related proteins within tumor cells.
Article
Biophysics
Haokang He, Lin Li, Yongsheng Wu, Daohui Zhao, Jie Liu, Jian Zhou
Summary: This study investigates the adsorption behavior of enzymes on ZIF-8 surfaces and its impact on catalytic activity using simulation methods. The results demonstrate that charged ZIF-8 surfaces can achieve ordered adsorption for enhanced catalytic activity, with ZIF-8-NH2 being a promising candidate for immobilization.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Heseong An, Kie Yong Cho, Qiang Lyu, Da-Shiuan Chiou, Ki Jin Nam, Dun-Yen Kang, Li-Chiang Lin, Jong Suk Lee
Summary: Membrane-based olefin/paraffin separations can offer a more energy-efficient alternative to cryogenic distillation, with the use of amine modulators inducing defect engineering in AZIF8 nanoparticles to enhance molecular sieving ability. The engineered AZIF8s demonstrate improved rigidity and pore size distribution, leading to better size-discrimination between C3H6 and C3H8. This approach also enables superior compatibility with various polymer matrices, as evidenced by the performance of the resulting mixed matrix membrane in C3H6/C3H8 separation.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Electrochemistry
Yuuki Sugawara, Satomi Ueno, Keigo Kamata, Takeo Yamaguchi
Summary: The physical and chemical properties of inorganic materials depend on their crystal structures, making precise structure design important for the development of efficient electrocatalysts. This study analyzed various iron-based oxides and found clear correlations between their oxygen evolution reaction (OER) activities and structural descriptors, with the Fe-O bond length identified as the most dominant descriptor for OER on iron-based oxides.
Article
Chemistry, Physical
Sankar Sasidharan, Assa Aravindh Sasikala Devi, Rajan Jose, Takanori Tamaki, Anilkumar M. Gopinathan, Takeo Yamaguchi
Summary: The design of advanced catalysts for newer-generation fuel cells, such as direct formate fuel cells (DFFCs), is crucial for energy generation and environmental sustainability. Alloyed nanocrystals, such as PdSn, show enhanced performance for formate oxidation reactions, offering higher efficiency and stability compared to pure palladium catalysts.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Takehiro Yamaki, Nguyen Thuy, Nobuo Hara, Satoshi Taniguchi, Sho Kataoka
Summary: A two-stage membrane-separation process was designed to extract propylene, aiming to reduce energy consumption and production costs. The advantages of the membrane-separation process were highlighted by evaluating the indicators of CO2 emissions and total annual costs. Case studies using model membranes were also conducted to forecast the technological applications of the membrane-separation process.
Article
Engineering, Chemical
Takanori Tamaki, Ryutaro Nishigaya, Ryota Yamazaki, Takeo Yamaguchi
Summary: Enzymatic biofuel cells have potential applications in powering portable and medical assistance devices. This study identifies the limiting factor for the current density of enzymatic biofuel cells as the ratio between the Michaelis constants and the effective concentration of the mediator. By rational design of enzyme electrodes and careful consideration of mediator immobilization methods, biofuel cells with high current density can be achieved.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Editorial Material
Electrochemistry
Yuuki Sugawara, Satomi Ueno, Keigo Kamata, Takeo Yamaguchi
Article
Chemistry, Multidisciplinary
Sasidharan Sankar, Soni Roby, Hidenori Kuroki, Shoji Miyanishi, Takanori Tamaki, Gopinathan M. Anilkumar, Takeo Yamaguchi
Summary: The noble metal-free Ni2P-Fe/NF electrode is a high-performing anode electrode that can be used in AEMWE systems with the assistance of a durable ether-free aromatic polyelectrolyte. The electrode exhibits a low cell voltage and excellent energy conversion efficiency, and can operate stably for up to 24 hours.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Takeo Yamaguchi, Shijina Kottarathil, Sreekanth Narayanaru, Sreekuttan M. Unni, Takanori Tamaki, Hidenori Kuroki, Unnikrishnan Nai r Saraswathy Hareesh, Gopinathan M. Anilkumar
Summary: In this study, an anode catalyst derived from trimetallic zeolitic imidazolate framework (ZIF) was developed, and its performance in sodium borohydride electrooxidation was enhanced by improving its porosity and conductivity. The results showed that the catalyst enabled an eight-electron transfer in the electrooxidation of sodium borohydride.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Nobuo Hara, Satoshi Taniguchi, Takehiro Yamaki, Thuy T. H. Nguyen, Sho Kataoka
Summary: This study presents a bi-objective optimization of the post-combustion CO2 absorption process using machine-learning and genetic algorithm. The optimized structure and operation conditions were obtained, providing important guidance for the practical use of the process.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
Article
Green & Sustainable Science & Technology
Thuy T. H. Nguyen, Wahyu S. Putro, Satoshi Hamura, Makoto Nakashige, Jun-Chul Choi, Norihisa Fukaya, Satoshi Taniguchi, Takehiro Yamaki, Nobuo Hara, Sho Kataoka
Summary: A new synthesis process for dialkyl carbonates, particularly diethyl carbonate (DEC), was designed and evaluated. The process involves the reaction of CO2 with tetraethoxysilane (TEOS) for DEC synthesis. Compared to the commonly used process of DEC synthesis from CO2 and ethanol, the new process shows higher economic and environmental viability.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Multidisciplinary
Noriko Nakamura, Seiichi Ohta, Mariko Yamada, Yukimitsu Suzuki, Natsuko F. Inagaki, Takeo Yamaguchi, Taichi Ito
Summary: This study developed a K+-responsive star copolymer that can alter its aggregation, adhesion, and interaction with cells by applying suitable stimuli. Microsized aggregates with a diameter of 5.5 μm were successfully formed in the absence of K+ ions, and in the presence of K+ ions, these aggregates dispersed due to a shift in lower critical solution temperature (LCST).
Article
Chemistry, Multidisciplinary
Sreekanth Narayanaru, Shoji Miyanishi, Hidenori Kuroki, Gopinathan M. M. Anilkumar, Takeo Yamaguchi
Summary: This study examined the durability of a trimethylammonium-modified poly(fluorene-alt-tetrafluorophenylene) (PFT-C-10-TMA) membrane and ionomer under dynamic operation, evaluating its ability to adapt to intermittent power sources. The results showed that the PFT-C-10-TMA membrane and ionomer exhibited high chemical and mechanical durability under dynamic start-stop operation, encouraging the development of electrolyzers that can utilize intermittent renewable power sources.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Review
Engineering, Chemical
Yuuki Sugawara, Sasidharan Sankar, Shoji Miyanishi, Rajith Illathvalappil, Pranav K. Gangadharan, Hidenori Kuroki, Gopinathan M. Anilkumar, Takeo Yamaguchi
Summary: The production of green-H-2 through water electrolysis from renewable energies is crucial for developing sustainability and cost-effectiveness. Anion exchange membrane water electrolyzer (AEMWE) is a promising alternative to fossil fuel-based energy platforms, employing inexpensive nonprecious metal catalysts and current collectors. Membrane electrode assemblies (MEAs) play a significant role in the efficiency of hydrogen production in AEMWE. This review highlights the performances and components of MEAs, such as AEMs and catalysts, with a comprehensive discussion of current progress and future research directions for commercializing AEMWE as a cost-effective and high-purity hydrogen production method.
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2023)
Correction
Green & Sustainable Science & Technology
Thuy T. H. Nguyen, Wahyu S. Putro, Satoshi Hamura, Makoto Nakashige, Jun-Chul Choi, Norihisa Fukaya, Satoshi Taniguchi, Takehiro Yamaki, Nobuo Hara, Sho Kataoka
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Polymer Science
Yuuki Sugawara, Toshiyuki Hirose, Susumu Kawauchi, Takeo Yamaguchi
Summary: In this study, a poly(NIPAM-co-CD-co-DBD) material was designed to achieve highly responsive temperature-induced autonomous reswelling through CD-DBD complexation. The autonomous reswelling was successfully detected based on the fluorescent character of DBD, demonstrating the capability for visual detection.
Article
Chemistry, Physical
Yuuki Sugawara, Keigo Kamata, Aoi Matsuda, Takeo Yamaguchi
Summary: Iron-based phosphates are efficient precatalysts for the anodic oxygen evolution reaction in water splitting. The electrochemically generated Fe-based compounds show significantly higher OER activity than the best conventional catalyst. Postcharacterization analysis reveals the transformation of Fe3O3(PO4) into Fe-based (oxyhydr)oxides with phosphorus dissolution.
ACS APPLIED ENERGY MATERIALS
(2023)
