Article
Chemistry, Applied
Hani Nasser Abdelhamid
Summary: Hydride materials show good performance for hydrogen storage and release, with the addition of benzoic acid and hexamethylenetetramine modulating the synthesis of porous metal organic frameworks. The materials prepared exhibit increased hydrolysis rate of sodium borohydride, with ZIF-8 and ZIF-67 prepared using benzoic acid showing high catalytic performance in terms of efficiency and reaction time.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Gwang Hyeon Eom, Sang A. Han, Joo Hyeong Suh, Jung Ho Kim, Min-Sik Park
Summary: Enriched cavities are strategically introduced to zeolitic imidazolate frameworks using a hard silica template approach, allowing easy access for Li ions to inner pores and cavities during Li plating and stripping. This approach optimizes internal pore utilization and facilitates Li-ion transport, ultimately enhancing electrochemistry performances such as long-term cyclability and reversible capacity.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Chemical
Tiago J. Ferreira, Laura M. Esteves, Jose M. S. S. Esperanca, Isabel A. A. C. Esteves
Summary: In this study, composite sorbent materials (IL@MOF) were fabricated using a metal-organic framework (MOF) ZIF-8 and [B(CN)(4)](-)-based ionic liquids (ILs). The experimental results showed that these materials exhibited good adsorption performance and similar pore properties compared to the pristine material. However, the addition of ILs decreased the selectivity of the composite.
Article
Nanoscience & Nanotechnology
Wei Liang Teo, Jiawei Liu, Weiqiang Zhou, Yanli Zhao
Summary: The study developed a simple yet effective method to produce a large quantity of nanoscale ZIF-8 through a scalable synthetic process and applied it onto fabric, enhancing organic dye adsorption capability and antibacterial properties.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Haixing Gao, Shuo Wang, Weng-Chon (Max) Cheong, Kaixi Wang, Huifang Xu, Aijian Huang, Junguo Ma, Jiazhan Li, Weng-Fai (Andy) Ip, Kwan San Hui, Duc Anh Dinh, Xi Fan, Feng Bin, Fuming Chen, Kwun Nam Hui
Summary: Ultrathin nitrogen-doped carbon nanosheets with intrinsic defects were synthesized through the pyrolysis of ZIF-8 with linker vacancies. The as-synthesized electrocatalyst exhibited excellent oxygen reduction reaction (ORR) activity and zinc-air battery performance. The adjacent sp3-carbon was found to enhance the adsorption and activation of oxygen molecules on sp2-carbon, leading to a lower ORR overpotential.
Article
Chemistry, Analytical
Wenzhen Zou, Ting Li, Zhendong Yao, Meiqiang Fan, Tingli Ma
Summary: This study designs and prepares a ZIF-8/SiOx/ZIF-8 composite with core-shell structure to overcome the low conductivity and volume expansion issues of silicon oxide in lithium-ion battery anode materials. The research shows that ZIF-8 not only regulates the particle size of SiOx, but also builds a three-dimensional network structure to provide buffer space, effectively preventing capacity loss caused by SiOx detachment from the anode surface.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Chanjong Yu, Young Jae Kim, Jongbum Kim, Kiwon Eum
Summary: The control of structure, shape, and components in metal-organic frameworks is crucial in electrochemical applications. This study successfully controlled the morphology of ZIF-8 through systematic controls of synthesis variables and achieved modulation of adsorption and pore characteristics through partial substitution insertion of a new organic precursor.
Article
Chemistry, Physical
Chen Zhe-qin, Zhong Xiao-cong, Xie Yong-min, Liu Jia-ming, Xu Zhi-feng, Wang Rui-xiang
Summary: In this study, urea was used to synthesize nitrogen-rich iron-nitrogen-carbon catalysts, showing high catalytic activity and stability in the oxygen reduction reaction. The catalyst exhibited a high specific surface area and surface defects, making it promising for metal-air battery applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Roberto Boada, Jesus Chaboy, Shusaku Hayama, Luke L. Keenan, Adam A. Freeman, Monica Amboage, Sofia Diaz-Moreno
Summary: In this study, the local structural changes of ZIF-8 framework during nitrogen gas adsorption were investigated using in situ XAS and HERFD-XANES spectroscopy. The results indicate that the framework flexibility involves the rotation of the ligand and the bending of the Me group, and the adsorbed nitrogen molecules in the window also contribute to the spectral features.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Xiaohui Niu, Simeng Yan, Rui Zhao, Hongxia Li, Xiaoyu Liu, Kunjie Wang
Summary: In the pursuit of chiral materials with significant chiral recognition effects and stability, the integration of metal nanoparticles and chiral metal-organic frameworks (CMOFs) has shown promise. However, the combination of metal nanoparticles (MNPs)/CMOFs often suffer from inferior stabilities due to the detachment of MNPs under certain conditions. To overcome this, a novel sandwich chiral material (D-His-ZIF-8@ Au@ZIF-8) was synthesized, which demonstrated excellent chiral recognition capabilities. This experiment presents a new perspective for the fabrication of a chiral electrochemical sensing platform based on a solid sandwich chiral nanocomposite.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Luyao Li, Jianfan Zheng, Jiaying Yu, Sanmei Liu, Weiming Xiao, Xuejin Mao, Shengjun Deng, Shunmin Ding, Chao Chen
Summary: This study presents a simple and sustainable approach to prepare Pd/ZIF-8 composite by directly reacting PdO/ZnO with 2-methylimzadole in H2 atmosphere. The developed method is solvent-free and uses H2 as the reducing agent, significantly reducing the emission of liquid and solid wastes. Additionally, the one-pot process allows for the reduction of Pd NPs and the building of ZIF-8, simplifying the preparation process. Moreover, the as-prepared Pd/ZIF-8 exhibits good catalytic activity for the hydrogenation of styrene.
Article
Crystallography
Marianne Kraeuter, Alexander John Cruz, Timothee Stassin, Sabina Rodriguez-Hermida, Rob Ameloot, Roland Resel, Anna Maria Coclite
Summary: ZIF-8 is synthesized by subjecting ZnO thin films deposited via plasma-enhanced atomic layer deposition to 2-methylimidazole vapor. The orientation of ZIF-8 crystals depends on the thickness and density of the precursor, with a more prominent orientation at longer conversion times. The thickness and roughness of ZIF-8 increase with conversion time.
Article
Chemistry, Multidisciplinary
Leilei Song, Siqi Li, Tao Li
Summary: A simple solution casting technique was developed to load ZIF-8 particles on three commercially available fibrous supports. Through a vapor-phase cycle of degradation and recrystallization, 46% of the porosity of ZIF-8 particles was recovered in the end.
Article
Chemistry, Multidisciplinary
Shao-Min Wang, Mohana Shivanna, Prem Lama, Qing-Yuan Yang, Leonard J. J. Barbour, Michael J. J. Zaworotko
Summary: Adsorbed natural gas (ANG) systems using porous materials can increase working capacity and reduce storage pressure. Metal doping in flexible metal-organic materials (FMOMs) allows control over the gate opening between porous and non-porous phases, enhancing methane working capacity. Ni0.89Co0.11L2 (X-dia-1-Ni0.89Co0.11) exhibited the highest working capacity of 153 cm(3) cm(-3) at 298 K, surpassing benchmark rigid MOFs.
Article
Materials Science, Multidisciplinary
Daixiong Zhang, Qing Xiang
Summary: The study introduces a novel method for size-controllable engineering of zeolitic imidazolate framework (ZIF-8) by changing the addition order of substances. Experimental results showed significant size difference and applicability to preparing encapsulating metal precursor.
Article
Chemistry, Physical
Matteo Signorile, Jenny G. Vitillo, Maddalena D'Amore, Valentina Crocella, Gabriele Ricchiardi, Silvia Bordiga
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Multidisciplinary Sciences
Julia Oktawiec, Henry Z. H. Jiang, Jenny G. Vitillo, Douglas A. Reed, Lucy E. Darago, Benjamin A. Trump, Varinia Bernales, Harriet Li, Kristen A. Colwell, Hiroyasu Furukawa, Craig M. Brown, Laura Gagliardi, Jeffrey R. Long
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Physical
Jenny G. Vitillo, Davide Presti, Ignacio Luz, Francesc X. Llabres i Xamena, Silvia Bordiga
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
Jenny G. Vitillo, Connie C. Lu, Christopher J. Cramer, Aditya Bhan, Laura Gagliardi
Summary: The study demonstrates that modifying the microenvironment around the divalent iron sites in metal-organic frameworks can modulate their catalytic activity for light alkane oxidation. By varying substituents and their proximity to the active site, the stability and reactivity of the Fe(IV)=O species can be improved to lower energy barriers for methane oxidation to methanol reaction.
Article
Energy & Fuels
Jayashree Ethiraj, Vinayagam Surya, Parasuraman Selvam, Jenny G. Vitillo
Summary: The synthesis and characterization of a novel cobalt trimesate metal-organic framework, KCL-102, were reported in the study. It was found that KCL-102 exhibited low stability in humid air and transformed into a hydrous cobalt trimesate phase, which was associated with the conversion of tetrahedral cobalt to octahedral cobalt.
Article
Chemistry, Inorganic & Nuclear
Jenny G. Vitillo, Laura Gagliardi
Summary: The properties of MOFs based on Fe3O metal nodes are influenced by the efficiency of solvent and counteranion removal by postsynthetic thermal treatment. Temperature, time, and reaction environment play a significant role in modifying key features of the materials, such as the number of open metal sites and the reduction of Fe(III) centers to Fe(II).
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Matthew C. Simons, Steven D. Prinslow, Melike Babucci, Adam S. Hoffman, Jiyun Hong, Jenny G. Vitillo, Simon R. Bare, Bruce C. Gates, Connie C. Lu, Laura Gagliardi, Aditya Bhan
Summary: Recent work has shown that MOFs can isolate metal sites mimicking enzymes to catalyze selective oxidations at low temperatures, offering new pathways for the valorization of underutilized feedstocks like methane. It has been demonstrated that protecting the desired product CH3OH in MOFs requires steps beyond the radical-rebound mechanism, with further transport and dehydration steps necessary to prevent overoxidation. The selectivity-controlling steps involve both chemical and physical rate phenomena, providing a strategy to mitigate overoxidation in these systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Jenny G. Vitillo, Christopher J. Cramer, Laura Gagliardi
Summary: Highly correlated systems, especially those containing transition metals, are common in catalysis. Existing single determinantal methods using Kohn Sham density functional theory often fail to accurately account for the significant static correlation in such systems. Although more rigorous multiconfigurational methods have been applied in some specific cases, their use in catalysis remains limited. This paper discusses the obstacles hindering the routine application of multireference wave function theoretical calculations to catalytic systems and the current progress in overcoming these obstacles.
ISRAEL JOURNAL OF CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Jenny G. Vitillo, Matthew D. Eisaman, Edda S. P. Aradottir, Fabrizio Passarini, Tao Wang, Stafford W. Sheehan
Summary: According to the 2021 IPCC report, CO2 removal measures are necessary to achieve climate goals. The strategy to mitigate emissions should focus on sources that require the least energy and capital investment per ton of CO2, while favoring processes that yield high-value products.
Article
Energy & Fuels
Rashmi Dahal, Jenny G. Vitillo, Anna C. Asland, Christoph Frommen, Stefano Deledda, Olena Zavorotynska
Summary: Magnesium borohydride (Mg(BH4)(2)) is a solid-state hydrogen storage compound that has high hydrogen densities and low operational temperature. This study used spectroscopic methods to investigate the reaction intermediates and provided additional insights into this decomposition reaction.
Article
Biochemistry & Molecular Biology
Angelo Maspero, Federico Vavassori, Luca Nardo, Guglielmo Vesco, Jenny G. Vitillo, Andrea Penoni
Summary: We have developed a simple and efficient strategy to enhance the fluorescence of biocompatible biindole diketonates (bdks) in the visible spectrum through difluoroboronation. The fluorescence quantum yield is significantly increased, independent of indole substitutions, by stabilizing the excited state and reducing non-radiative decay rates. This stabilization enables significant O-1(2) photosensitized production.
Article
Chemistry, Physical
Olena Zavorotynska, Magnus H. Sorby, Jenny G. Vitillo, Stefano Deledda, Christoph Frommen, Bjorn C. Hauback
Summary: Metal hydroborates are versatile materials with interesting properties related to energy storage and cation conductivity. CsB3H8 undergoes two phase transitions before decomposition, transforming from an orthorhombic room temperature phase to a new phase at 73 degrees C, and then to a face-centered cubic phase at 88 degrees C. Studies on these phase transitions and decomposition pathways using various techniques provide insights into the properties and potential applications of CsB3H8.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Engineering, Chemical
Jenny G. Vitillo, Valentina Crocella, Francesca Bonino
Meeting Abstract
Chemistry, Multidisciplinary
Jenny G. Vitillo, Matthew Simons, Aditya Bhan, Christopher Cramer, Connie Lu, Laura Gagliardi
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)