Article
Chemistry, Multidisciplinary
Thao P. Doan-Nguyen, Shuai Jiang, Kaloian Koynov, Katharina Landfester, Daniel Crespy
Summary: The study introduces a novel method to synthesize ultrasmall nanocapsules with a diameter of 6 nm, demonstrating a core-shell structure formed by a sol-gel reaction and Ostwald ripening. Results indicate that the size of the nanocapsules depends on the ripening rate and alkoxysilane conversion rate.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
S. Hayne, S. Margel
Summary: This paper presents a novel coating process that is applied directly onto polymeric films, providing a long-term alternative to short-term surface treatment of low surface energy polymers. The coating process involves an improved synthesis of raspberry-like particles onto polymeric surfaces and the creation of superhydrophobic and self-cleaning films.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Qiubo Zhang, Xinxing Peng, Yifan Nie, Qi Zheng, Junyi Shangguan, Chao Zhu, Karen C. Bustillo, Peter Ercius, Linwang Wang, David T. Limmer, Haimei Zheng
Summary: The atomic ripening pathway for Cd-CdCl2 core-shell nanoparticles is mediated by crack defects, as revealed by liquid cell transmission electron microscopy.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Igor V. Zagaynov, Anatoly A. Konovalov
Summary: A series of CeO2-TiO2 composites were synthesized using the sol-gel method, and their structures were investigated using HR TEM, XRD, TG-DSC-MS, N2 adsorption-desorption isotherms. The titania coating layer consisting of fine crystallites contributes to the properties of the CeO2@TiO2 nanocomposite. A fast, simple, and facile route for synthesizing novel CeO2@TiO2 core-shell nanocomposite particles was suggested. Increasing the concentration of the titania precursor was found to increase the shell thickness but also led to the formation of a small amount of independent titania clusters. The increase in titania content resulted in a larger proportion of the rutile phase and a decrease in the proportion of metastable anatase and brookite, while reducing the particle size of the initial ceria core and the specific surface area due to the closer connections between nanoparticles caused by the titania shells.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Yuri Reyes, Shaghayegh Hamzehlou, Jose Ramon Leiza
Summary: The use of a mixture of costabilizers has been shown to enhance droplet stability in mini and nanoemulsions by preventing Ostwald ripening. Molecular dynamics simulations provide additional insights into the mechanisms behind this enhancement and allow the study of degradation under different conditions using a limited number of parameters. The retention of small costabilizer by the larger one is found to be the key factor contributing to the stability enhancement.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Borna Zandkarimi, Patricia Poths, Anastassia N. Alexandrova
Summary: Size selection does not completely suppress Ostwald ripening of supported catalytic nanoparticles due to the presence of different geometric and electronic structures. A competing pathways theory has been proposed to describe the size-specific sintering behavior at the atomistic level.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Aaron Bayles, Shu Tian, Jingyi Zhou, Lin Yuan, Yigao Yuan, Christian R. Jacobson, Corbin Farr, Ming Zhang, Dayne F. Swearer, David Solti, Minghe Lou, Henry O. Everitt, Peter Nordlander, Naomi J. Halas
Summary: This study introduces Al@TiO2 core-shell nanoparticles as active photocatalysts for hot electron-mediated H-2 dissociation reaction and hot hole-mediated methanol dehydration. The research indicates that the photocatalytic mechanism involves plasmonic hot carrier generation and subsequent transfer into the TiO2 layer. The Al@TiO2 antenna-reactor offers an earth-abundant solution for the future design of visible-light-driven plasmonic photocatalysts.
Article
Chemistry, Physical
Ali Dehghani, Zahra Sanaei, Michele Fedel, Mohammad Ramezanzadeh, Mohammad Mahdavian, Bahram Ramezanzade
Summary: The design of smart coatings for corrosion protection using carbonaceous materials as carriers has been successfully achieved in this study. The synthesized CNT-ZIF67-Mo nano-hybrids show a significant reduction in the corrosion rate of metals and possess self-healing capability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Ivana Gabelica, Lidija Curkovic, Vilko Mandic, Ivana Panzic, Davor Ljubas, Kreso Zadro
Summary: In this study, magnetic nanoparticles based on magnetite were successfully synthesized using microwave-assisted techniques. The ternary core-shell Fe3O4/SiO2/TiO2 nanocomposite exhibited synergistic adsorption and photocatalytic properties for the removal of organic micropollutants, with the ability to be easily recovered and reused through magnetic separation.
Article
Materials Science, Coatings & Films
Maanas Togaru, Jonathan A. Johnson, Thomas Koenig, Scott O'Dell, Stephen DiPietro, Gregory B. Thompson
Summary: Magnetron sputtering is utilized to create conformal tungsten coatings over yttria stabilized zirconia powders, with distinctive plate-like and faceted tungsten particulates formed due to low energy impacts and adhesion during deposition. The results demonstrate the potential for sputter deposition in creating refractory coatings for cermet fuels and other applications requiring core-shell powder fabrication.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Tengjisi, Yue Hui, Guangze Yang, Changkui Fu, Yun Liu, Chun-Xia Zhao
Summary: Biomimetic core-shell nanoparticles - silica nanocapsules were recently developed using a designer dual-functional peptide SurSi under environmentally friendly conditions, allowing precise control of peptide-induced biosilicification for the formation of oil-core silica-shell nanocapsules with uniform size and monodispersity. The fundamental mechanism of silica formation through peptide catalyzed biosilicification was systematically investigated to optimize the formation of biomimetic silica nanocapsules, providing valuable insights for making core-shell nanoparticles via controlling nucleation and reaction at interfaces.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Energy & Fuels
Hepeng Zhu, Chenghao Duan, Minchao Qin, Zidan Liu, Jiong Li, Ligang Yuan, Qiaoyun Wen, Xinhui Lu, Lei Shi, Jiangsheng Xie, Keyou Yan
Summary: The introduction of TFPA as a catalyst for Ostwald ripening and the development of the ICGC strategy have led to high-quality thin films with larger grain size and reduced defect density. This approach has improved the performance and stability of perovskite solar cells.
Review
Chemistry, Multidisciplinary
Zijian Wang, Jian Qi, Nailiang Yang, Ranbo Yu, Dan Wang
Summary: Three factors in designing an excellent heterogeneous tandem catalyst include sequencing, proximity, and compatibility, which can be achieved by changing the packing style or designing the nano/micro structure. Core-shell structures are considered ideal candidates for heterogeneous tandem catalysts due to their excellent capacity to balance the aforementioned three factors.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Paulo J. Silva, Carlos Franco, Francesco Stellacci, Alejandro Lapresta-Fernandez
Summary: The growth modulation of metal nanocrystals is controlled by diffusional mass transfer, and PVP plays a dual role in growth pathways. The concentration of PVP affects the growth mode and symmetry of metal nanocrystals.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Suzhou Li, Jinhui Huang, Kaixin Yi, Haoliang Pang, Zhexi Liu, Wei Zhang, Chenyu Zhang, Si Liu, Jiaoni Li, Chunhua Liu, Wenli Shu
Summary: Based on this study, two different sizes of silica materials (silica beads and Nano-silica) were used to encapsulate a QQ bacterial strain (Rhodococcus sp. BH4). The results showed that both QQ beads could resist high pressure, acid, alkali, salt, and EDTA buffer. After five months of use, both beads still had more than 70% QQ activity. In the lab-scale continuous MBR experiment, the transmembrane pressure (TMP) reaching 50 kPa in the experimental groups was more than 3 times that in the blank group, and the TMP contamination time was extended from 5 to 6 days in the blank group to 18-19 days. Among them, silica beads greatly improved the compressive strength of the beads and performed better in QQ.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
The Ky Vo, Tra Phuong Trinh, Van Cuong Nguyen, Jinsoo Kim
Summary: In this study, a series of hybrid GrO/MIL-101(Cr) (GrO@MCr) nanocomposites were prepared via hydrothermal synthesis, showing increased adsorption capacities for organic pollutants MO and RB198. The adsorption mechanism was detailedly studied in this research.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Applied
The Ky Vo, Van Cuong Nguyen, Duong Tuan Quang, Bum Jun Park, Jinsoo Kim
Summary: The rapid construction of defects in metal-organic frameworks using microwave-assisted reactors can significantly impact porosity and CO2 adsorption capabilities of the material. The concentration of defects influences the amount of CO2 uptake and selectivity, surpassing those of conventionally prepared materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jin Hyuck Heo, Kyungmin Im, Hyong Joon Lee, Jinsoo Kim, Sang Hyuk Im
Summary: Ni,Ti-co-doped MoO2 nanoparticles were synthesized with excellent moisture stability and improved conductivity for use as hole transporting material in metal halide perovskite solar cells. The Ni,Ti-doped MoO2 showed better reduction stability and achieved a power conversion efficiency of 18.1% under standard conditions. Additionally, the unencapsulated Ni,Ti-co-doped MoO2 showed only a 12-13% degradation after a stability test, indicating promising potential for practical applications.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Energy & Fuels
Jungyeon Ji, Kyungmin Im, Heeyeon An, Sung Jong Yoo, Yongjin Chung, Jinsoo Kim, Yongchai Kwon
Summary: Hollow cobalt nitrogen-doped carbon (H-CoNC) is proposed as an anodic catalyst for membraneless hydrogen peroxide fuel cells (HPFC) and enzymatic biofuel cells (EBC), demonstrating superior catalytic activity for hydrogen peroxide oxidation reaction (HPOR) due to its porous and hollow-shell structure, along with a large amount of isolated Co atoms and coordinate bonds with Co and nitrogen (Co-N-4). The improved mass transfer to the active site results in enhanced current density at the bioanode and higher maximum power density (MPD) for both EBC and HPFC when using H-CoNC compared to conventionally synthesized catalysts.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Van Nhieu Le, Daekeun Kim, Jinsoo Kim, Mohd Roslee Othman
Summary: Nanoporous UiO-66 spherical beads prepared using PVA binder improved the mechanical strength for toluene capture without affecting crystalline nature and micropore structures. However, the PVA binding reduced the BET surface area and total pore volume, resulting in a slight decrease in toluene adsorption efficacy by limiting toluene exposure to micropores.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Quoc Hao Nguyen, Kyungmin Im, Jinsoo Kim
Summary: In this study, hollow Fe, Co, and nitrogen co-doped carbon catalyst with high surface area and uniformly distributed Fe and Co species was prepared, demonstrating excellent ORR performance, stability, and tolerance to methanol crossover.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Ophthalmology
Ikhyun Jun, Sehui Kim, Hyoseon Kim, Sun Woong Kim, Yong Woo Ji, Kwang Pyo Kim, Tai Gyu Lee, Kyoung Yul Seo
Summary: The study suggests a relationship between tear film interferometric patterns and lipid profiling of meibum, as well as its rheological properties. These findings may contribute to the development of new treatment modalities.
AMERICAN JOURNAL OF OPHTHALMOLOGY
(2022)
Article
Chemistry, Physical
Toan Minh Pham, Kyungmin Im, Jinsoo Kim
Summary: This study presented a tungsten-modified titanium dioxide support for platinum catalyst, which showed improved catalytic activity and stability, offering a potential solution to the carbon corrosion issue in proton exchange membrane fuel cells.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Sion Oh, Kyungmin Im, Jinsoo Kim
Summary: Developments in fuel cell technology have led to the design of efficient electrocatalysts for the oxygen reduction reaction (ORR). Metal-nitrogen-carbon (M-N-C) catalysts, particularly carbon nanotube-encapsulated hollow Co-Fe-NC electrocatalysts, show promising catalytic activity and excellent selectivity for ORR. However, the synthesis of carbon-based metal electrocatalysts with evenly distributed active sites and well-controlled structures remains challenging.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Thuan Anh Vo, Yoonmo Koo, Jinsoo Kim, Seung-Soo Kim
Summary: This study characterized non-precious metal catalysts over activated carbon and TiO2-SiO2 supports loaded via incipient wetness impregnation and spray pyrolysis. The research found that activated carbon exhibited better performance in syringol conversion and hydrocarbon selectivity compared to TiO2-SiO2. Additionally, the Ni catalyst showed more effective hydrodeoxygenation performance compared to Fe and NiFe catalysts. The study provides a promising potential for the utilization of non-precious metals and biomass-derived activated carbon in removing oxygen from bio-oil model compounds, contributing to sustainable renewable energy development.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hind Jihad Kadhim Shabbani, Ammar Ali Abd, Tharveen Raj Rajalingam, Jinsoo Kim, Mohd Roslee Othman, Zuchra Helwani
Summary: This study investigates the use of microporous APKS and ZIF-8 adsorbents for capturing carbon dioxide from flue gas surrogate. The lab simulated and experimented with the purity and recovery of N2 and CO2 in the product and waste stream. The results show that factors like adsorbent type, adsorption times, and CO2 concentration influence the N2 purity in the product stream, while CO2 feed compositions, adsorbent type, and pressure swing operation affect the purity and recovery of CO2 in the waste stream.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Dieu-Phuong Phan, Toan Minh Pham, Hojin Lee, My Ha Tran, Eun Duck Park, Jinsoo Kim, Eun Yeol Lee
Summary: A series of zeolite-porous metal-organic framework composites with different Pt loadings were synthesized via a two-step approach. The Pt-loaded composites showed improved acidity compared to the parent materials and demonstrated high catalytic performance and stability in the selective hydrodeoxygenation process.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Applied
Van Nhieu Le, Van Cuong Nguyen, Huu Trung Nguyen, Hoai Duc Tran, Thach N. Tu, Woo-Sik Kim, Jinsoo Kim
Summary: Bimetallic metal-organic frameworks with two different metal species demonstrate higher effectiveness in CO2 capture and separation performance than their monometallic counterparts. A series of bimetallic MIL-100(Fe, Al) was synthesized by adding Fe and Al metal precursors with various molar ratios. Among the investigated samples, MIL-100(Fe, Al)#2 showed the highest CO2 adsorption capacity of 3.27 mmol g-1 with an IAST-CO2/N2 selectivity of 76.5 at 25 degrees C and 1 bar. This facile synthetic route has the potential to enhance CO2 adsorption performance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Energy & Fuels
Hind Jihad Kadhim Shabbani, Ammar Ali Abd, Masad Mezher Hasan, Zuchra Helwani, Jinsoo Kim, Mohd Roslee Othman
Summary: The study investigated hydrogen purification from a surrogate gas using spent coffee grounds as a medium. The process was examined under isothermal, adiabatic, and non-adiabatic conditions using Aspen adsorption software. The results showed that spent coffee grounds can effectively purify hydrogen, and a rectangular non-adiabatic plate column can enhance the purification process by improving purity and recovery responses.
GAS SCIENCE AND ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Jaehyung Choi, Kye Sang Yoo, Daekeun Kim, Jinsoo Kim, Mohd Roslee Othman
Summary: This study successfully developed microporous Mo-UiO-66 nanoparticles through a solvothermal procedure, with a requirement of 40% excess Mo content. The resulting octahedron crystals had a size of about 80 nm and a large surface area of 1158 m(2)/g.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Applied
Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang
Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma
Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Review
Chemistry, Applied
Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang
Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He
Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Lucie Havelkova, Bogdana Bashta, Michaela Vankova, Jiri Zednik, Jiri Brus, Jan Svoboda, Alice Vagenknechtova, Jan Sedlacek
Summary: An atom-economic one-step chain-growth coordination homopolymerization providing high yields of functionalized hyper-cross-linked polyacetylenes with a permanent micro/mesoporous texture and a BET area of up to 1062 m2/g is reported. The homopolymerization is highly compatible with the heteroatom groups of the monomers and allows the preparation of well-defined porous networks with a wide spectrum of univalent groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng
Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Pingping Li, Lei Han, Donghun Kim, Kemal Celebi
Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang
Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi
Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi
Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Nataliia Reinders, Martin Durovic, Pavla Honcova, Zaneta Dohnalova, Jana Luxova, Stanislav Slang, Jhonatan Rodriguez-Pereira, Petra S. Sulcova
Summary: This study presents a new method for preparing a microporous Ni2P/C catalyst with high catalytic activity. The redox reaction and carbon matrix formation during high-temperature treatment contribute to the stability and activity of the catalyst. Experimental and analytical results suggest that the microporous structure of the composite plays a crucial role in its catalytic performance. These findings are important for practical applications of efficient hydrogen production by water electrolysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Ana Raquel Bertao, Viktoriya Ivasiv, Cristina Almeida-Aguiar, Patricia R. Correia, Antonio M. Fonseca, Manuel Banobre-Lopez, Fatima Baltazar, Isabel C. Neves
Summary: This study developed a zeolite-based delivery system (ZDS) using silver and 5-Fluorouracil as antimicrobial and antineoplastic agents. The ZDS was characterized and its antimicrobial properties were investigated, showing better antibacterial effectiveness for the ZDS containing both silver and 5-FU.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Naonobu Katada, Nobuki Ozawa, Etsushi Tsuji, Keigo Kanehara, Akiho Otsuka, Taiga Sakamoto, Kirari Umezawa, Hitoshi Matsubara, Satoshi Suganuma, Momoji Kubo
Summary: First principles calculations were used to investigate the pathway for methylation of benzene with methane catalyzed by MFI type zeolite-supported Co species. The strong adsorption of benzene on Co is found to lower the activation energy for methane dissociation and promote the formation of toluene precursor. The activation energy of methane dissociation is also affected by the Al-Al distance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Yuan Liu, An T. Ta, Kyoung Chul Park, Shenyang Hu, Natalia B. Shustova, Simon R. Phillpot
Summary: We use density functional theory to investigate the interactions of cerium, americium, and curium cations with crown ethers. Our results demonstrate that crown ethers can capture cerium, americium, and curium ions, and modifying the crown ether structure by substituting nitrogen atoms for oxygen atoms significantly increases their binding energies with radionuclides.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Zhengwu Peng, Shixing Wang, Yihui Wu, Xiang Liu, Hongliang Liu, Dekun Zhang, Likang Fu
Summary: An efficient adsorbent for recovery of germanium was prepared and characterized in this study. The adsorption behavior of Ge(IV) on the adsorbent was analyzed, and the results showed that it follows pseudo-secondary kinetic model and Langmuir isotherm model. The adsorbent exhibited good anionic anti-interference ability and can still maintain high adsorption efficiency after repeated adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)