Article
Chemistry, Physical
Roman Solovov, Verbina Orlichenia, Boris Ershov
Summary: Zerovalent iron nanoparticles with spherical shape and narrow size distribution were prepared by photochemical reduction of iron(III) in isopropyl alcohol.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Yanzhi Wang, Hao Lv, Lizhi Sun, Ben Liu
Summary: Mesoporous metal-metalloid/nonmetal alloys have attracted increasing attention as highly efficient nanocatalysts due to their ability to enhance precious noble metal utilization efficiency, accelerate transfer processes, introduce new functionalities, optimize metal sites, and enhance catalytic activity and stability. Research in this area also addresses the challenges in synthesizing and applying mesoporous noble metal-metalloid/nonmetal alloys.
Article
Chemistry, Inorganic & Nuclear
Israel T. Pulido-Diaz, Alejandro Serrano-Maldonado, Carlos Cesar Lopez-Suarez, Pedro A. Mendez-Ocampo, Benjamin Portales-Martinez, Aida Gutierrez-Alejandre, Karla P. Salas-Martin, Itzel Guerrero-Rios
Summary: The study demonstrates that nicotinamide groups grafted on ordered mesoporous silica (OMS) can serve as stabilizers for RhNPs used as catalysts, forming spherical rhodium nanoparticles with a narrow size distribution. On the contrary, amine-functionalized OMS tends to form RhNP aggregates after catalytic reactions, affecting the reaction efficiency. Supported RhNPs also exhibit selective reduction of different groups and show high activity in reductive amination reactions.
DALTON TRANSACTIONS
(2021)
Review
Chemistry, Multidisciplinary
Chun Xu, Chang Lei, Yue Wang, Chengzhong Yu
Summary: Dendritic mesoporous silica nanoparticles have attracted attention due to their wide applications, but the terminology used is ambiguous. This review provides a critical analysis of reported dendritic silica nanoparticles according to their structural classification, updating the understanding of their formation mechanisms and the control of structural parameters. The review also focuses on the applications of dendritic mesoporous nanoparticles in the biomedical field, offering new insights into the structure-property relationship.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Junhao Ma, Yanyan Li, Jichun Li, Xuanyu Yang, Yuan Ren, Abdulaziz A. Alghamdi, Guoxin Song, Kaiping Yuan, Yonghui Deng
Summary: A polymer-mediated co-assembly method was proposed for the construction of highly connected mesoporous structures and the simultaneous loading of noble metal nanoparticles in TMOs/NM nanocomposites. The materials showed high sensitivity and selectivity in gas sensing performance, with the sensors integrated into a wireless module connected to smartphones for real-time detection of specific biomarkers.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
M. Fernanda Torresan, Josefina Morrone, Cecilia Sorbello, Roberto Etchenique, Paula C. Angelome, Alejandro Wolosiuk
Summary: A novel optically transparent platform was designed and synthesized by combining NaYF4: Er3+, Yb3+ upconverting nanoparticles (UCNPs) and mesoporous metal oxide thin films (MOTFs). The composite films blend the properties of UCNPs and MOTFs, exhibiting both upconverting properties and highly accessible mesopores. Testing showed promising results for temperature sensing applications of the composite films.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yue Hou, Cheng-Jie Jiang, Ying Wang, Jing-Wei Zhu, Jia-Xing Lu, Huan Wang
Summary: In this study, nitrogen-doped mesoporous carbon (NMC) was used to support CuSb and prepare an efficient catalyst for electrocatalytic reduction of CO2 to high value-added fuels. The results showed that the catalytic activity was significantly improved compared to Cu/NMC, and the Cu content also played a role in the activity of the CO2 reduction reaction.
Article
Biochemistry & Molecular Biology
Xinwen Ma, Weiduo Fei, Xiandie Zhang, Jie Ji, Xiang Zhou
Summary: In this study, mesoporous silicon nanoparticles (M-Si) were successfully prepared from mesoporous silica nanoparticles through magnesiothermic reduction. The resulting M-Si exhibited uniform size distribution with average diameter of 160 nm. It possessed a large internal surface area of 93.0 m(2) g(-1) and an average pore size of 16 nm, enabling rich reaction sites and reduced mass diffusion limitations. The M-Si also showed higher reactivity compared to non-porous Si nanopowder, indicating its potential as fuel for metastable intermolecular composites.
Article
Chemistry, Multidisciplinary
Feixiang Sun, Xin Chen, Siyi Wang, Fan Sun, Sheng-Yin Zhao, Weiping Liu
Summary: In this study, a manganese-catalyzed three-component coupling reaction was reported for the synthesis of gamma-hydroxy phosphines via a borrowing hydrogen strategy. Methanol serves as a sustainable C1 source and the reaction delivers the desired products in good yields.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Ceramics
Roberto Nistico
Summary: This document summarizes the main relevant methods to induce a certain degree of morphological control in iron oxides, highlighting the principal guidelines and unveiling the advantages and disadvantages of each method, with a particular emphasis on industrial feasibility.
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
(2021)
Article
Chemistry, Multidisciplinary
Lanyan Shou, Xue Yang, Xueting Feng, Yanqiong Wang, Kejie Chai, Weiming Xu
Summary: In this study, a self-supported mesoporous CuMn2O4 catalyst was designed for efficient N-alkylation of alcohols through hydrogen transfer reactions. The catalyst utilized the variable values and complex coordination status of copper and manganese ions, as well as its high surface area and large particle size, to achieve higher yields compared to its bulk alternative. CuMn2O4 also demonstrated broad universality towards different substrates.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Microbiology
Hayley J. Gadol, Joseph Elsherbini, Benjamin D. Kocar
Summary: This research investigates the impact of different iron oxide minerals on microbial methane production and community development. It shows that only poorly crystalline iron oxide mineral, ferrihydrite, has a significant effect on iron reduction and microbial community composition. The presence of ferrihydrite continues to influence microbial community development even after the onset of methanogenesis, leading to increased dissimilarity compared to control groups.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Chemistry, Analytical
Md A. Wahab, S. M. Azad Hossain, Mostafa Kamal Masud, Hyeongyu Park, Aditya Ashok, Mislav Mustapic, Minjun Kim, Dipak Patel, Mahboobeh Shahbazi, Md. Shahriar A. Hossain, Yusuke Yamauchi, Yusuf Valentino Kaneti
Summary: The incorporation of nanoarchitectonics into the development of nanozymes has great potential for achieving target-specific geometry, dense active sites, and cascade catalysis. This study successfully fabricated well-dispersed superparamagnetic iron oxide nanoparticles on mesoporous carbon support and demonstrated their promising catalytic activity and bioassay functionality.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Yuenan Zheng, Luoqi Wang, Hongyu Liu, Jiaqi Yang, Rui Zhang, Ling Zhang, Zhen-An Qiao
Summary: An energy balance concept is proposed to regulate the porous structure of ordered mesoporous perovskite oxides. The experimental results show that the interaction between mesoporous La2Zr2O7 and 5-hydroxymethylfurfural is promoted by rich Lewis acid sites, active Zr species, and favorable porous structure.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Metallurgy & Metallurgical Engineering
Ilker Kara
Summary: The study investigated the effects of adding different proportions of reductant materials and varying reaction temperatures on the properties of composite pellet samples, showing that pellets produced with 3% sodium bentonite at 1100 degrees C exhibited the highest compressive strength and metallization rate.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Chemistry, Inorganic & Nuclear
Dimitrios Evangelou, Anastasia Pournara, Charikleia Tziasiou, Evangelos Andreou, Gerasimos S. Armatas, Manolis J. Manos
Summary: In this study, a new robust metal-organic framework (MOF) called Al-MOF-1 was synthesized and characterized. Al-MOF-1 demonstrated excellent stability in a wide pH range and high selectivity towards oxoanionic species. It also showed promising applications in wastewater treatment and as a luminescence sensor for detecting trace amounts of metal ions.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Marina A. Tzani, Stella Fountoulaki, Ioannis N. Lykakis
Summary: In this study, we investigated the catalytic efficacy of silicotungstic acid as a polyoxometalate towards the synthesis of trans-DACPs. Our results demonstrate that this method offers a highly efficient and versatile approach for the synthesis of trans-DACPs with excellent yields.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Vassiliki Daikopoulou, Euaggelia Skliri, Eirini D. Koutsouroubi, Gerasimos S. Armatas, Ioannis N. Lykakis
Summary: This study reports the synthesis and catalytic application of mesoporous Au-loaded Mn3O4 nanoparticle assemblies with different Au contents for the selective oxidation of anilines into nitroarenes. The results show that Au/Mn3O4 MNAs containing 0.5 wt % Au exhibit the best catalytic performance among different catalysts, leading to high yields and selectivity of the corresponding nitroarenes.
Article
Chemistry, Inorganic & Nuclear
Chrysanthi Patriarchea, Ioannis Vamvasakis, Eirini D. Koutsouroubi, Gerasimos S. Armatas
Summary: Modulating heterojunction interfaces at the nanoscale is crucial for developing efficient photocatalysts. The mesoporous heterojunction architectures made of MoS2 nanolayers and CdS nanocrystals showed high efficiency in solar energy to chemical fuel conversion, with a remarkable enhancement in photocatalytic hydrogen production activity. The optimized MoS2/CdS catalyst achieved a H2 production rate of up to 0.4 mmol h(-1) with 51.2% apparent quantum yield, demonstrating a 6.7x enhancement in H2 generation efficiency compared to unmodified CdS.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Stavros A. Diamantis, Anastasia D. Pournara, Eirini D. Koutsouroubi, Constantinos Moularas, Yiannis Deligiannakis, Gerasimos S. Armatas, Antonios G. Hatzidimitriou, Manolis J. Manos, Theodore Lazarides
Summary: This study presents a new metal-organic framework material that can detect and remove heavy metal ions from water resources. The material exhibits efficient fluorescence sensing and sorption of heavy metal cations, and can simultaneously remove various heavy metal ions even in the presence of other ions.
INORGANIC CHEMISTRY
(2022)
Article
Crystallography
Anastasia D. Pournara, Evangelos K. Andreou, Gerasimos S. Armatas, Manolis J. Manos
Summary: The metal organic frameworks (MOFs) MOR-1 and MOR-2 show fast sorption kinetics and high selectivity for the removal of diclofenac (DCF) from water. The composite material MOR-1-alginic acid exhibits remarkable removal efficiency towards DCF anions in a sorption column.
Article
Biochemistry & Molecular Biology
Petros Georgianos, Anastasia D. Pournara, Evangelos K. Andreou, Gerasimos S. Armatas, Manolis J. Manos
Summary: This study successfully removed two toxic dyes, methylene blue and methyl orange, from contaminated water using newly designed composite materials. The materials showed exceptional sorption capability, regeneration capability, and reusability, providing an alternative solution to water pollution.
Article
Chemistry, Physical
Sofia Bra, Ioannis Vamvasakis, Evangelos K. Andreou, Georgios Vailakis, Georgios Kopidakis, Gerasimos S. Armatas
Summary: Fabrication of Ni2P/CuCo2S4 p-n junction catalysts enables efficient and inexpensive water electrolysis and clean energy generation. The catalyst's structure can improve hydrogen adsorption energetics and electrochemical reaction kinetics by manipulating the electronic structure of active sites, leading to high intrinsic electrocatalytic activity and remarkable durability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Organic
Aleksander R. Bena, Evangelos G. Bakalbassis, Michail M. Sigalas, Ioannis N. Lykakis
Summary: We report a one-pot strategy for the synthesis of 3-carboxyl and 3-ketopyridines using readily available alkynes and propargylamine. The protocol is conducted in aqueous media and open-air conditions, and offers a broad substrate scope. Various aryl- and alkyl-substituted pyridines were successfully synthesized, including the natural product core 4-aza-fluorenone. Mechanistic studies support a domino hydroamination/pericyclic reaction pathway.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Andriani G. G. Chaidali, Ioannis N. N. Lykakis
Summary: A facile green synthetic protocol for the synthesis of several substituted N-(pyridin-2-yl)imidates was reported. The method involved the in situ formation of alpha-iminonitriles under the Lewis acid catalysis and subsequent conversion into the desired imidates using Cs2CO3 in alcoholic media. The synthetic protocol was also scalable and successfully applied for the synthesis of N-heterocycles.
Article
Chemistry, Physical
Evangelos K. . K. Andreou, Eirini D. D. Koutsouroubi, Ioannis Vamvasakis, Gerasimos S. S. Armatas
Summary: Targeting heterostructures with modulated electronic structures and efficient charge carrier separation and mobility is an effective strategy to improve photocatalytic performance. In this study, 2D/3D hybrid heterostructures comprising P-doped graphitic carbon nitride (g-C3N4) nanosheets and small-sized Ni2P nanoparticles are synthesized and shown to exhibit prominent activity in the photocatalytic reduction of Cr(VI). The improved performance is attributed to the effective charge-carrier transportation and spatial separation at the Ni2P/P-doped g-C3N4 junctions.
Article
Chemistry, Multidisciplinary
Marina A. Tzani, Ioannis N. Lykakis
Summary: We investigated the efficient synthesis method of a series of trans-N,N-4,5-substituted-diaminocyclopent-2-enones (trans-DACPs) from furfural and anilines through Gold(III) chloride (HAuCl4) mediation. The protocol only required a low amount of catalysts (1.5 mol%), open air conditions, no additives, and short reaction times, resulting in good to high yields of the desired trans-DACPs. The method was also applicable to secondary amines, providing the corresponding 4,5-diamino-cyclopent-2-enones in good yields. To the best of our knowledge, this is the first gold-mediated paradigm as an efficient catalyst for the formation of the cyclopentenones core-bearing C-N bonds under mild reaction conditions.
CHEMISTRY-SWITZERLAND
(2023)
Review
Chemistry, Organic
Andriani G. Chaidali, Ioannis N. Lykakis
Summary: This review presents recent synthetic approaches and diverse applications of imidates, which are used as intermediates in organic transformations and have potential catalytic effects in the synthesis of N-heterocycles, natural products, and metal complexes. Various organic compounds, including nitriles, isocyanides, and amides, can be easily converted to imidates through simple and flexible processes. The review provides a categorized and summarized exploration of the recent synthetic routes and applications of imidates in organic transformations.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ioannis Vamvasakis, Evangelos K. Andreou, Gerasimos S. Armatas
Summary: This study develops a highly efficient visible light photocatalyst for hydrogen generation via water splitting by synthesizing dual-semiconductor nanocomposites. The material exhibits a unique microstructure and good stability, enabling efficient hydrogen production through effective charge transfer and photocatalytic reactions.