Article
Chemistry, Physical
Anagha Sasikumar, John M. Griffin, Celine Merlet
Summary: Interfaces between aqueous electrolytes and nanoporous carbons are important in energy storage and capacitive deionization. The use of nuclear magnetic spectroscopy allows for the characterization of ion adsorption in such systems. This study investigates the factors influencing chemical shifts in adsorbed species using complementary methods and finds that ring currents and ion organization are predominant for Li+ ions and hydrogen atoms of water, while the hydration shell should be considered for larger ions like Rb+ and Cs+.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Paper & Wood
Jinbang Hu, Wei Liu, Liangjun Xia, Guangdi Yu, Hongbo Huang, Heng Guo, Wen Zhang, Yunli Wang, Weilin Xu
Summary: Cellulosic Juncus effusus fiber was chemically modified to form a cellulose-based adsorbent for removing Disperse Red 3B dye. The adsorbent exhibited excellent performance with a maximum adsorption capacity of 103.95 mg/g and a removal efficiency of 99% for the dye. The data fitted well to the pseudo-second-order kinetic model.
Article
Chemistry, Applied
Avinash Singh Patel, SuriyaPrakaash Lakshmi Balasubramaniam, Balunkeswar Nayak, Mary Ellen Camire
Summary: The fate of beta-carotene-loaded Pickering emulsions stabilized with lauric acid-adsorbed cellulose nanocrystals (CL) in an in vitro gastrointestinal tract (GIT) was investigated. The results showed that CL can stabilize the emulsions and reduce lipid digestibility, while cellulose nanocrystals (CNC) led to droplet flocculation and coalescence and had higher lipid digestibility.
FOOD HYDROCOLLOIDS
(2023)
Article
Environmental Sciences
Jishuang He, Hailong Zhang, Wei Wang, Peng Yao, Yi Jiao, Jianli Wang, Yaoqiang Chen
Summary: This study found that Na- and K-doped catalysts have a promoting effect on soot combustion, while Ca- and P-doped catalysts have a negative impact. Doping biodiesel impurities led to a smaller surface area by blocking small pores. Surface chemical properties, including NO oxidation/storage capacity, play a significant role in promoting soot combustion.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Chang Jing-yang, Liu Meng, Wan Jun, Shi Guang-wei, Li Tao
Summary: Different modification methods were used to hydrate calcium oxide, and the desulfurization effect of modified calcium hydroxide and the influence of operating conditions were studied. The results showed that ethanol solution can effectively increase the specific surface area of the adsorbent, and temperature, H2O, SO2, and CO2 concentration have a significant impact on the desulfurization efficiency.
Article
Polymer Science
Hongjing Zhang, Qingyuan Mu, Xiaotian Yu, Ke Zhou, Xu Chen, Haitao Hao, Yongqiang Li
Summary: A green and environment-friendly porous composite fiber membrane with good heavy metal ion adsorption performance was designed and prepared using natural adsorption material montmorillonite (MMT) as the adsorbent and cellulose acetate (CA) as the loading substrate. Modified montmorillonites (HCl-MMT, SDS-MMT, and CTS-MMT) were prepared and utilized to construct the porous MMT/CA composite fiber membrane. The maximum adsorption capacity of Cu2+ reached 60.272 mg/g after 10 hours of static adsorption on the 5 wt% CTS-MMT composite fiber membrane. The adsorption of Cu2+ followed quasi-second-order kinetic model and Langmuir isothermal adsorption model, with chemical adsorption being the main factor and monolayer adsorption being the main mechanism.
Article
Chemistry, Multidisciplinary
Sujuan Pan, Changqing Wang, Yibo Wang, Rongmin Wang
Summary: In this study, a gallic acid modified feather keratin adsorbent (GA-FK gel) was successfully prepared, exhibiting a rich mesoporous three-dimensional network structure. The gel showed a high adsorption capacity for Fe(III), following a quasi-second-order kinetic model and Freundlich adsorption isotherm model. The adsorption mechanism was identified as non-specific adsorption.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Inorganic & Nuclear
Florent Dubray, Eddy Dib, Izabel Medeiros-Costa, Cindy Aquino, Delphine Minoux, Stijn van Daele, Nikolai Nesterenko, Jean-Pierre Gilson, Svetlana Mintova
Summary: This article investigates the factors influencing the silanol species in silica-based materials and proposes guidelines for evaluating them using spectroscopic techniques.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Estefania Bello, Pau Ferri, Mathias Nero, Tom Willhammar, Isabel Millet, Frank W. Schuetze, Leen van Tendeloo, Peter N. R. Vennestrom, Mercedes Boronat, Avelino Corma, Manuel Moliner
Summary: Computer-assisted selection of TEA and MTEA for the synthesis of Al-rich CHA-type zeolites showed that MTEA has better OSDA-directing roles, leading to excellent catalytic activity for SCR of NOx with ammonia under heavy duty diesel conditions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Review
Biochemistry & Molecular Biology
Lisa Patricia Elisabeth Bader, Harm-Anton Klok
Summary: Bacteria can serve as excellent carriers for nano- and micro-sized particles, and immobilizing the particles on the bacterial cell surface can enable precise drug delivery with enhanced selectivity and reduced side effects.
MACROMOLECULAR BIOSCIENCE
(2022)
Article
Chemistry, Physical
Chao Liu, Jun Wang, Zexiang Chen, Jianqiang Wang, Meiqing Shen
Summary: This study investigated the chemistry of NOx adsorption and desorption in the presence of C3H6, showing that the addition of C3H6 can enhance the NOx adsorption capacity and increase the NOx desorption temperature of PNAs. Spectroscopic and computational investigations revealed that the formation of more Pd+ in the presence of C3H6 contributed to higher NOx storage capacity. Furthermore, the shielding effect of Pd-NC3H6O on Pd+-NO improved the NOx desorption temperature.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Environmental Sciences
Haiqi Gu, Weixiong Lin, Shuiyu Sun, Chun Wu, Fan Yang, Ye Ziwei, Nanwei Chen, Jie Ren, Shilin Zheng
Summary: In this study, a low-cost and environmentally friendly sludge-based adsorbent modified by calcium oxide (CaO) was prepared. The CaO modification was found to enhance the adsorption capacity and mechanical strength of the adsorbent. Optimal conditions for Cd(II) adsorption were identified as 5% CaO dosage and 60 degrees C drying temperature, with a Cd(II) adsorption rate of 99.74% achieved under these conditions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Chemistry, Multidisciplinary
Shaked Uzi-Gavrilov, Zohar Tik, Omer Sabti, Michael M. Meijler
Summary: Chemical communication between P. aeruginosa and S. aureus in biofilms of cystic fibrosis patients was found to promote cooperation, leading to increased disease severity and antibiotic resistance. Through metabolomics analysis and synthetic validation, it was discovered that S. aureus can convert pyochelin into a compound with reduced affinity for iron, allowing it to coexist more readily with P. aeruginosa and forming robust dual-species biofilms.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Asma Batool, Suresh Valiyaveettil
Summary: The silica coated soya waste adsorbent shows high removal percentages for pollutants like methylene blue and neutral red, with efficient and fast adsorption capacities. Its eco-friendly, renewable, and easy-to-regenerate properties make it a promising material for wastewater decontamination.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Ying Shi, Qiuming Zhou, Zhangfeng Qin, Zhiwei Wu, Weiyong Jiao, Mei Dong, Weibin Fan, Jianguo Wang
Summary: Hierarchically structured Beta zeolites with high meso-porosity were synthesized through steam treatment using organosilanes as pore-forming reagents, followed by modification with K and Pt. The Pt/K-Beta-HS catalysts exhibited excellent performance in the aromatization of n-heptane, showing longer lifetime, higher selectivity to aromatics, and larger turnover numbers compared to conventional Beta zeolites. These results demonstrate the potential of Pt/K-Beta-HS zeolites as efficient catalysts for converting n-heptane to aromatics.
MICROPOROUS AND MESOPOROUS 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)