Article
Chemistry, Physical
Wenju Peng, Lixia Cai, Yani Lu, Yaoyao Zhang
Summary: Thermosensitive polymer materials PNxDy with controllable morphology and particle size were prepared by free radical polymerization. Bimetallic Mn- and Co-doped MCM-41 molecular sieves with good morphology and properties were then prepared using PNxDy as a template. The Mn-Co-MCM-41 by PN100D4 as a template showed the best mesoporous ordering and the most regular material morphology with 2 nm nanoparticles. It was applied as a catalyst for the degradation of Rhodamine B (RhB) by potassium monopersulfate (PMS), achieving a degradation rate of 98% in 20 minutes and maintaining a degradation rate of 91% after being reused six times.
Article
Polymer Science
Mansur Zarrabi
Summary: This study for the first time used Iranian natural pumice as a source of silica to derive MCM-41 adsorbent, which was highly grafted with APTES for anchoring cephalexin (CEX) molecules. The results showed that N-MCM-41 exhibited excellent adsorption capacity and desorption performance, providing guidance for antibiotic adsorption.
Article
Chemistry, Applied
Arti Malik, Udai P. Singh
Summary: We report the synthesis, characterization, and catalytic activity of a highly efficient and reusable silica-based catalyst MCM-41@CP@PAL@Cu. The catalyst was prepared by anchoring a Cu(II)-Schiff base complex onto mesoporous MCM-41 with a surface-grafted -chloro group. Various analytical methods, including FT-IR, Low angle P-XRD, TGA, N-2 adsorption-desorption, SEM, TEM, and MPAES, were used to characterize the obtained catalyst. The composition and chemical state of Cu metal in the catalyst were identified using X-ray photoelectron spectroscopy. The catalyst MCM-41@CP@PAL@Cu was employed for the conversion of various alkenes to their epoxides with a yield of 99% in the model reaction. The catalyst can be reused for at least six times.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Chemistry, Physical
Fenglei Liu, Wei Huang, Shuoyu Wang, Baowei Hu
Summary: A novel magnetic amidoxime-functionalized MCM-41 material (Fe3O4@MCM-41-PDA/OA) was developed by loading Fe3O4 on amidoxime-functionalized MCM-41 using a simple strategy. The experimental parameters were optimized to improve the removal efficiency of uranium(VI) and europium(III) on Fe3O4@MCM-41-PDA/OA. The results showed that the adsorption process was a monolayer and chemisorption process.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Huimin Sun, Yuyang Lu, Jie Sheng, Yishan Song
Summary: This research introduced a new enzyme-responsive antimicrobial carrier using Zein-functionalized mesoporous silica nanoparticles (MCM-41) to enhance controlled-release of antibacterial components. The results showed that Zein inhibited the release of capsaicin but the presence of bacteria promoted the release. Zein-functionalized MCM-41 exhibited higher antibacterial efficacy than free capsaicin and possessed long-lasting activity, making it a potential preservative in the food industry.
Article
Chemistry, Multidisciplinary
Jianyu Zhang, Lianrui Hu, Kaihua Zhang, Junkai Liu, Xingguang Li, Haoran Wang, Zhaoyu Wang, Herman H. Y. Sung, Ian D. Williams, Zebing Zeng, Jacky W. Y. Lam, Haoke Zhang, Ben Zhong Tang
Summary: Experimental and theoretical studies show that introducing electron-donating groups into triphenylmethane (TPM) can enhance the efficiency of clusteroluminescence, while introducing electron-withdrawing groups may result in quenched clusteroluminescence.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Environmental Sciences
Wenwen Huang, Jiacheng Liu, Na Rao, Guozhi Fan, Juntao Yan, Qunpeng Cheng, Guangsen Song
Summary: The study demonstrates that adding surfactant can improve the pore structure of MCM-41, increase the CO2 adsorption capacity, and reduce the diffusion resistance of CO2 in the pore.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Chemistry, Applied
Xiaofei Xu, Ke Song, Jie Guo, Shima Liu, Xianwu Zhou, Jian He
Summary: In this study, an amino-functionalized MCM-41 mesoporous material was prepared and used for the adsorption of chlorogenic acid from Eucommia ulmoides leaf extracts. The NH2-MCM-41 showed good mesoporous structure and exhibited efficient adsorption of chlorogenic acid. The study investigated the kinetics, isotherms, and thermodynamics of the adsorption process. The results indicated that NH2-MCM-41 is a promising adsorbent for the separation and purification of chlorogenic acid.
JOURNAL OF POROUS MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Sharda Pasricha, Pragya Gahlot, Kavita Mittal, Devansh Rai, Nishita Avasthi, Harsimar Kaur, Shruti Rai
Summary: This review focuses on the synthesis, effects, stability, efficiency, selectivity, and limitations of functionalized MCM-41 catalysts for organic reactions, highlighting their innovative and need-based characteristics. The catalysts can catalyze a variety of reactions and have the ability for multi-component synthesis.
Article
Engineering, Environmental
Sara Ghezelsefloo, Jaber Keyvan Rad, Mahtab Hajiali, Ali Reza Mahdavian
Summary: This study focused on the preparation of fluorescent poly(methyl methacrylate-co-glycidyl methacrylate) nanoparticles bearing Rhodamine B ethylenediamine acrylate for sensing Fe2+ and Fe3+ ions. The results showed that these nanoparticles exhibited immediate color change and enhanced fluorescence emission upon the addition of Fe2+ and Fe3+, with low detection limits and a wide linear detection range. These nanoparticles could potentially be used as colorimetric and fluorescent sensors with high sensitivity and instant responsivity for Fe2+ and Fe3+ ions in future applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Pharmacology & Pharmacy
R. Foulady-Dehaghi, Sh. Sohrabnezhad, M. Hadavi
Summary: The study focuses on a new drug delivery system for erythromycin using a covalent organic framework-based nanohybrid with desirable loading capacity and controlled release rate. The drug was incorporated using an environmentally friendly, economical, and easy-to-execute melting method. The nanohybrid demonstrated prolonged drug release and potent antibacterial activity against Staphylococcus aureus.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Article
Spectroscopy
Zhaleh Ghafary, Rahman Hallaj, Abdollah Salimi, Sudabeh Mafakheri
Summary: A novel, highly sensitive, simple and amplified fluorescence immunosensing strategy was designed for HBsAg detection using a sandwich type probe. The probe utilized MSN-Rh.B as a fluorescent mesoporous capsule and signal amplifier site, and Fe3O4 MNP as a probe collector site.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Optics
Ali Bavali, Ali Rahmatpanahi, Zahra Niknam
Summary: The angular dependence of diffusive random laser emission is evaluated by exciting a highly concentrated solution. Dimerization at high concentrations leads to random fluctuation of the dielectric constant and provides multiple scattering events and enhanced backscattering. Förster resonance energy transfer and anisotropic inner filter effect have a significant impact on the unique spectral features of RL emission.
Article
Chemistry, Physical
Fei Gao, Cailin Ji, Shougui Wang, Jipeng Dong, Changqing Guo, Yuwen Gao, Guanghui Chen
Summary: Integrating multifunctional active sites into appropriate porous materials is a promising strategy for achieving excellent catalytic performance in CO2 cycloaddition. In this work, carboxy-functionalized imidazolium ionic liquids were successfully anchored onto MCM-41 mesoporous silicates. The resulting MCM-41-Imi/COOH catalyst integrates various active sites and possesses high surface area and mesopore structure. The catalyst exhibits good catalytic activity, cycling stability, and versatility for CO2 cycloaddition reactions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Food Science & Technology
Dianyu Yu, Xin Zhang, Tong Wang, Haoyuan Geng, Liqi Wang, Lianzhou Jiang, Walid Elfalleh
Summary: The study demonstrated that the amino-modified G-MCM-41 carrier efficiently immobilized lipase CALB, which exhibited high immobilization efficiency. The immobilized CALB showed enhanced catalytic activity and prolonged stability at lower temperatures, with significant effects in catalyzing the transesterification of soybean oil and phytosterol.
Article
Materials Science, Ceramics
Deniz Bozoglu, Sahin Yakut, Kemal Ulutas, Deniz Deger
Summary: Thin film polyethylene oxide, produced by the thermal evaporation technique, exhibits structural and property differences compared to bulk polyethylene oxide. The dielectric constant of polyethylene oxide thin film is 10 times greater than that of bulk polyethylene oxide. There is consistency among dielectric constants, activation energies, and free volume fractions for both thin film and bulk samples. Polyethylene oxide thin film is observed to be more brittle than bulk polyethylene oxide.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Xiaozhen Fan, Zhuo Wang, Zheng Fang, Huiqun Ye, Jinju Zheng, Jianqiang Zhang, Yanjun Qin, Yao Zhai, Yanlong Miao, Zixiang Zhao, Can Yang, Jiajun He, Zhenghang Wei, Yunzhang Fang
Summary: The microscopic strain evolution and microstructural of FeCuNbSiB amorphous alloy samples were studied under both free and tensile stress annealing conditions. It was found that an amorphous-nanocrystalline structure was developed in both samples after annealing at 813 K, and the size of nanocrystals was limited by the applied stress.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Atsushi Tanaka, Atsuki Saito, Takashi Murata, Ayako Nakata, Tsuyoshi Miyazaki
Summary: Although molecular dynamics (MD) simulation is a powerful tool for investigating the atomic-scale structures of complex materials, its reliable and accurate application to multi-component glass systems faces challenges due to limited force fields (FFs) and the complexity of chemical environments. This study demonstrates the feasibility of efficient and accurate large-scale density functional theory (DFT) calculations for multi-component glass systems. The evaluation of classical FFs based on the results of large-scale DFT calculations reveals low accuracy for non-bridging oxygen atoms, and differences in Si-O-Si angle distribution and electronic structure for X = Mg.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Petr Shvets, Ksenia Maksimova, Aleksandr Goikhman
Summary: In this study, vanadium oxide xerogel samples were successfully synthesized through a liquid phase reaction and the interaction of films with water. The samples were thoroughly analyzed using X-ray diffraction and Raman spectroscopy, revealing the existence of two distinct phases. It was also discovered that previous misinterpretations regarding the high-pressure polymorph structure were due to the formation of a high-temperature phase. These findings highlight the potential for further refining and expanding the current structural models of vanadium oxide xerogel in future research efforts.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Yiran Zhang, Jing Pang, Qingchun Xiang, Dong Yang, Yinglei Ren, Xiaoyu Li, Keqiang Qiu
Summary: The effect of the volume fraction of body-centered cubic (BCC) crystal on the room temperature brittleness of Fe-based amorphous nanocrystalline alloys was investigated. Molecular dynamics simulations were conducted to obtain seven model samples with different embedded BCC nanocrystal contents. The results showed a gradient decrease in the plasticity of the alloys with different nanocrystal contents.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Moustafa Sahnoune Chaouche, Hani K. Al-Mohair, Shavan Askar, Barno Sayfutdinovna Abdullaeva, Naseer Ali Hussien, Ahmed Hussien Alawadi
Summary: In this work, a novel micromechanical data-driven machine learning framework was proposed to characterize material parameters in bulk metallic glasses. The framework utilized nanoindentation simulations with Berkovich and spherical tips to compile a vast collection of data on material behavior in BMGs. The developed machine learning model efficiently predicted critical material properties and highlighted the importance of input feature weight functions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Louisiane Verger, Vinuyan Ganesaratnam, Virginie Nazabal, Sebastien Chenu, Christophe Calers, David Le Coq, Laurent Calvez, Olivier Hernandez, Xiang-Hua Zhang
Summary: Crystallization in Ga, Sb, and Se glasses was studied, and a correlation between Se content, crystalline phases, and electrical conductivity was observed. The resulting glass-ceramics exhibited significantly higher conductivity compared to other Se-based glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Seong-Sik Shin, Ga-Yeong Kim, Byeonggwan Lee, Jae-Hwan Yang, Yeon-Su Son, Jung-Hoon Choi, Jae-Young Pyo, Ki Rak Lee, Hwan-Seo Park, Hyun Woo Kang
Summary: In this study, silver tungstate-tellurite glass with different loading of AgI was developed for immobilization of radioactive iodine. The effects of increasing the amount of AgI on the glass matrix were investigated. The leaching properties of all samples were evaluated, and it was found that the release of all elements satisfied the US regulation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Chunghee Nam
Summary: This study demonstrates the prediction performance of a CNN regression model for the magnetic entropy changes and transition temperatures of bulk metallic glasses with magnetocaloric effects. The model achieved high prediction performance, as measured by the determination coefficient and root mean square error. The results showed good agreement with experimental values and reported results.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
A. Hosny, Y. M. Moustafa, G. El-Damrawi
Summary: In this study, crystalline glass ceramics were obtained directly from glasses using an ion exchange process between lead bromide and oxygen ions. The addition of lead bromide caused significant changes in the glass structure and the formation of specific crystalline phases.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Luana Cristina Feitosa Alves, Jheimison Ferreira Gomes, Natacya Fontes Dantas, Maria Nayane Queiroz, Pablo Nabuco Portes, Francielle Sato, Nilma de Souza Fernandes, Karina Miyuki, Celso Vataru Nakamura, Alysson Steimacher, Franciana Pedrochi
Summary: This study evaluated the influence of CaF2 addition on the bioactivity of the samples. The results showed that the samples exhibited good bioactivity and cytocompatibility, making them suitable for biomedical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
N. Keninger, S. Feller
Summary: The principles of Topological Constraint Theory (TCT) were used to study alkali borate and silicate glass systems. Structural models were developed based on experimental data and used to predict properties of the glass.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Hao Wang, Chengliang Zhao, Chuntao Chang, Shengli Zhu, Zhankui Zhao
Summary: The relationship between the heterogeneous structure and structural relaxation in metallic glasses was explored by investigating the quasielastic and viscoelastic behavior of a Zr55Cu30Ni5Al10 metallic glass. Stress-annealing treatment was used to retain elastic strain energy, and a unique creep recovery phenomenon was observed during the reheating process. The Maxwell model was employed to qualitatively describe the mechanisms of elastic strain energy retention and release.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Sihyung Lee, Giyeol Han, Karuppasamy Pandian Marimuthu, Hyungyil Lee
Summary: This study presents a method for extracting FVM parameters of Zr-based TFMG using MD and FEA, and validates the method through simulation and experiments.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Nedra Saad, Mohamed Haouari, Mayssa Ibrahim, Noura Amamou
Summary: In this work, we investigated the optical properties of a fluorophosphate glass system doped with Tb3+ and Eu3+ ions. We found that the emitted light can be tuned by changing the doping concentration, excitation wavelength, or excitation power, which is important for the design of solid-state lighting sources.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)