4.6 Article

Nanosized copper ferrite materials: Mechanochemical synthesis and characterization

期刊

JOURNAL OF SOLID STATE CHEMISTRY
卷 184, 期 5, 页码 1153-1158

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2011.03.035

关键词

Mechanochemical synthesis; Copper ferrite; Mossbauer spectroscopy; Methanol decomposition; Toluene oxidation

资金

  1. Bulgarian Ministry of Education and Science [DO 02-295/2008, DO 02-29/2008, TK 02-63, Rita 4-412]

向作者/读者索取更多资源

Nanodimensional powders of cubic copper ferrite are synthesized by two-steps procedure of co-precipitation of copper and iron hydroxide carbonates, followed by mechanochemical treatment. X-ray powder diffraction, Mossbauer spectroscopy and temperature-programmed reduction are used for the characterization of the obtained materials. Their catalytic behavior is tested in methanol decomposition to hydrogen and CO and total oxidation of toluene. Formation of nanosized ferrite material is registered even after one hour of milling time. It is established that the prolonging of treatment procedure decreases the dispersion of the obtained product with the appearance of Fe2O3. It is demonstrated that the catalytic behavior of the samples depends not only on their initial phase composition, but on the concomitant ferrite phase transformations by the influence of the reaction medium. (C) 2011 Elsevier Inc. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Environmental Sciences

Comparative studies of carbon capture onto coal fly ash zeolites Na-X and Na-Ca-X

Silviya Boycheva, Denitza Zgureva, Hristina Lazarova, Margarita Popova

Summary: This study investigates the influence of calcium content in CFA on the properties of coal fly ash zeolites, as well as the carbon capture capacity of different types of zeolites. The development of efficient adsorbents from CFA with varying composition is expected to contribute to environmental benefits and the advancement of CO2 capture technologies in the context of the circular economy.

CHEMOSPHERE (2021)

Article Nanoscience & Nanotechnology

Nickel-Decorated Mesoporous Iron-Cerium Mixed Oxides: Microstructure and Catalytic Activity in Methanol Decomposition

Tanya Tsoncheva, Consolato Rosmini, Mihail Mihaylov, Jiri Henych, Kristina Chakarova, Nikolay Velinov, Daniela Kovacheva, Zuzana Nemeckova, Martin Kormunda, Radostina Ivanova, Ivanka Spassova, Konstantin Hadjiivanov

Summary: In this study, the effects of the Fe/Ce ratio and the calcination temperature of cerium-iron oxides on Nickel-decorated mesoporous cerium-iron oxide composites were investigated. The research delves into the complex role of the FeCe support in the reaction mechanism.

ACS APPLIED MATERIALS & INTERFACES (2022)

Article Materials Science, Multidisciplinary

Plasma-Modified Coal Fly Ash Zeolites with Enhanced Catalytic Efficiency toward the Total Oxidation of Volatile Organic Compounds as Low-Cost Substitutes for Platinum Group Metals Catalysts

Silviya Boycheva, Denitza Zgureva-Filipova, Cyril Popov, Hristina Lazarova, Margarita Popova

Summary: This study investigates the modification of coal fly ash zeolites (CFAZ) through microwave plasma surface treatment, which enhances their catalytic activity in total VOC oxidation. The results show that different treatment times and plasma agents have varying effects on the properties and structure of the samples, with CHF3 favoring catalytic activity and SF6 inhibiting it. The development of low-cost and efficient catalysts is crucial for conserving critical raw materials and utilizing coal ash resources.

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE (2022)

Article Polymer Science

Modification of eggshell membrane to impart biospecific properties

Zornica Todorova, Ivanka Nikolova, Margarita Popova, Petar Grozdanov, Daniela Karashanova, Neli Koseva

Summary: In this study, two modification pathways were used to enrich the eggshell membrane surface with glucopyranosyl units, resulting in improved protein recognition and reduced bacterial adhesion. The modified membranes demonstrated distinct functional properties, making them promising for various applications in biotechnology and materials science.

POLYMER INTERNATIONAL (2022)

Article Chemistry, Multidisciplinary

CO2 Adsorption on the N- and P-Modified Mesoporous Silicas

Oyundari Tumurbaatar, Hristina Lazarova, Margarita Popova, Violeta Mitova, Pavletta Shestakova, Neli Koseva

Summary: SBA-15 and MCM-48 mesoporous silicas were modified with functionalized (3-aminopropyl)triethoxysilane (APTES) using the post-synthesis method, introducing N- and P-containing groups to the pore surface. The structure of the newly synthesized modifiers and their grafting onto the porous matrix were confirmed by multinuclear NMR and FTIR spectroscopies. The modified silicas exhibited enhanced CO2 adsorption capacity compared to the initial material, with stable performance observed over three adsorption/desorption cycles.

NANOMATERIALS (2022)

Article Chemistry, Physical

Mesoporous Ce-Fe-Ni nanocomposites encapsulated in carbon-nanofibers: Synthesis, characterization and catalytic behavior in oxygen evolution reaction

Consolato Rosmini, Tanya Tsoncheva, Daniela Kovatcheva, Nikolay Velinov, Hristo Kolev, Daniela Karashanova, Momtchil Dimitrov, Boyko Tsyntsarski, David Sebastian, Maria Jesus Lazaro

Summary: Ceria-iron oxide mesoporous materials were modified with Ni-Fe alloys and further transformed into ferrous carbides and metal alloys encapsulated within carbon nanofibers. The modified phases showed high electrochemical activity and low overpotential in the Oxygen Evolution Reaction. The morphological, textural and physicochemical properties of the samples were characterized in detail.

CARBON (2022)

Article Chemistry, Multidisciplinary

Influence of erbium doping on the structural, magnetic and optical properties of hematite (?-Fe2O 3) nanorods

Nina Popov, Mira Ristic, Victor Kuncser, Kreso Zadro, Nikolay Velinov, Petre Badica, Andrei Alexandru-Dinu, Nicusor Iacob, Ljerka Kratofil Krehula, Svetozar Music, Stjepko Krehula

Summary: Substitution of Fe3+ by Er3+ in hematite resulted in changes in morphology and structure, affecting the magnetic and optical properties. This substitution caused a decrease in hyperfine magnetic field, coercive field, and Morin transition temperature, and an increase in magnetic susceptibility and narrowing of the optical band gap.

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS (2022)

Article Biochemistry & Molecular Biology

Hydrodeoxygenation of Levulinic Acid to γ-Valerolactone over Mesoporous Silica-Supported Cu-Ni Composite Catalysts

Margarita Popova, Ivalina Trendafilova, Manuela Oykova, Yavor Mitrev, Pavleta Shestakova, Magdolna R. Mihalyi, Agnes Szegedi

Summary: Monometallic and bimetallic catalysts supported on KIT-6 based mesoporous silica/zeolite composites were prepared and characterized. The bimetallic CuNi-KIT-6 catalyst showed high stability and conversion rate in gas-phase reactions.

MOLECULES (2022)

Article Chemistry, Multidisciplinary

Curcumin and Capsaicin-Loaded Ag-Modified Mesoporous Silica Carriers: A New Alternative in Skin Treatment

Ivalina Trendafilova, Ralitsa Chimshirova, Denitsa Momekova, Hristo Petkov, Neli Koseva, Penka Petrova, Margarita Popova

Summary: Biologically active substances of natural origin are a promising alternative for treating skin diseases. The limitations of low water solubility and bioavailability in natural compounds can be overcome by developing suitable delivery systems. In this study, a silver-modified mesoporous silica nanocarrier was prepared using the template exchange procedure. The drug-loaded formulation showed high loading efficiency, and the interaction between drugs and carriers was studied. The release experiments demonstrated improved solubility, and the formulations exhibited potent antiradical, antioxidant, and antibacterial activities. The simultaneous delivery of curcumin and capsaicin showed enhanced antiproliferative effects on maligning cells. These findings suggest that the developed delivery systems have promising potential for dermal treatment.

NANOMATERIALS (2022)

Article Biochemistry & Molecular Biology

Low-Temperature Toluene Oxidation on Fe-Containing Modified SBA-15 Materials

Ivalina Trendafilova, Manuel Ojeda, John M. Andresen, Alenka Ristic, Momtchil Dimitrov, Natasa Novak Tusar, Genoveva Atanasova, Margarita Popova

Summary: Transition metals as catalysts for total VOC oxidation at low temperatures are challenging. This study prepared and tested iron-modified SBA-15, AlSBA-15, and ZrSBA-15 materials with varying Fe loading for toluene oxidation. The results showed that increasing Fe loading improved the oxidation rate and decreased the temperature required for complete toluene removal. Surface properties of the mesoporous support influenced the type and localization of iron oxide species, and 5 wt. % Fe-containing ZrSBA-15 exhibited excellent activity in the total oxidation of toluene at lower temperatures due to the synergistic effect of Fe-Zr and the presence of accessible and stable Fe2+/Fe3+ active sites.

MOLECULES (2023)

Article Chemistry, Physical

CO2 Hydrogenation to Renewable Methane on Ni/Ru Modified ZSM-5 Zeolites: The Role of the Preparation Procedure

Margarita Popova, Manuela Oykova, Momtchil Dimitrov, Daniela Karashanova, Daniela Kovacheva, Genoveva Atanasova, Agnes Szegedi

Summary: Mono- and bimetallic Ni- and Ru-modified micro-mesoporous ZSM-5 catalysts were prepared and their physicochemical properties were studied. The results showed that the zeolite structure and modification procedure influenced the formation, dispersion, and reducibility of metal oxides. Nickel dispersion was higher and more reducible in the presence of ruthenium in bimetallic catalysts. In CO2 hydrogenation to methane, 10Ni5RuZSM-5 material exhibited the highest activity and selectivity.

CATALYSTS (2022)

Article Chemistry, Multidisciplinary

Novel Nanosized Spinel MnCoFeO4 for Low-Temperature Hydrocarbon Oxidation

Vencislav Tumbalev, Daniela Kovacheva, Ivanka Spassova, Ralitsa Velinova, Georgi Tyuliev, Nikolay Velinov, Anton Naydenov

Summary: This study reports on MnCoFeO4 spinels with peculiar composition and their catalytic behavior in the reactions of complete oxidation of hydrocarbons. The spinel prepared with sucrose as the fuel shows higher catalytic activity, possibly due to its higher specific surface area, pore volume, and thermal stability.

NANOMATERIALS (2022)

Article Chemistry, Multidisciplinary

Utilisation of waste Cu-, Mn- and Fe-loaded zeolites generated after wastewater treatment as catalysts for air treatment

Mia Stankovic, Margarita Popova, Matjaz Mazaj, Goran Drazic, Andraz Suligoj, Nigel van de Velde, Mojca Opresnik, Zeljko Jacimovic, Natasa Novak Tusar, Natasa Zabukovec Logar

Summary: This study reveals the potential of waste metal-loaded zeolite generated through wastewater treatment as an effective catalyst for removing volatile organic compounds (VOCs) from air. The thermally treated natural zeolite Clinoptilolite showed good catalytic performance in toluene oxidation and cycling stability.

FRONTIERS IN CHEMISTRY (2022)

Article Chemistry, Applied

Advanced high-iron coal fly ash zeolites for low-carbon emission catalytic combustion of VOCs

Silviya Boycheva, Agnes Szegedi, Karoly Lazar, Cyril Popov, Margarita Popova

Summary: The coal fly ash zeolites with increased iron oxide content were prepared and modified using radiofrequency plasma treatment. The plasma-modified iron-enriched zeolite showed high catalytic activity for VOC oxidation. The CO2 adsorption capacity of the plasma-modified zeolite under dynamic conditions was also investigated.

CATALYSIS TODAY (2023)

Article Chemistry, Analytical

Effect of calcium on enhanced carbon capture potential of coal fly ash zeolites. Part II: a study on the adsorption mechanisms

Silviya Boycheva, Kristina Chakarova, Mihail Mihaylov, Konstantin Hadjiivanov, Margarita Popova

Summary: This study found that calcium has a positive effect on the carbon capture capacity of coal fly ash zeolites, increasing their adsorption capacity. It raises an important question regarding coal ash classification for the synthesis of zeolites with carbon capture applications.

ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS (2022)

Article Chemistry, Inorganic & Nuclear

Structural Studies of Potassium Hexaiodoplatinate(IV) K2PtI6

Caleb J. Bennett, Helen E. A. Brand, Alexander K. L. Yuen, Maria K. Nicholas, Brendan J. Kennedy

Summary: The temperature dependence of the crystal structure of Potassium Hexaiodoplatinate(IV) between 80 and 500 K is studied. Different crystal structures are observed at different temperatures, including monoclinic, tetragonal, and cubic structures. Accurate determination of the structures of K2PtI6 is important for further theoretical and practical research.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Phosphate adsorption by amino acids intercalated calcium aluminum hydrotalcites: Kinetic, isothermal and mechanistic studies

Zhuo Zeng, Jiangfu Zheng, Xiaoming Li, Changzheng Fan, Rongying Zeng, Wenqing Tang

Summary: An efficient method for phosphate removal from wastewater is urgently needed due to the environmental issue caused by excessive phosphorus. In this study, calcium aluminum layered double hydroxides (CaAl-LDHs) and six amino acid intercalated calcium aluminum layered double hydroxides (CaAl-amino acid-LDHs) were prepared and compared for their phosphate adsorption performance. L-Aspartic acid intercalated calcium aluminum layered double hydroxides (CaAl-Asp-LDHs) exhibited the highest phosphate adsorption capacity and faster removal rate compared to CaAl-LDHs. The phosphate adsorption mechanism on CaAl-Asp-LDHs involved electrostatic attraction, hydrogen bonds, complexation, and ion exchange. This environmentally friendly material shows promising potential for efficient phosphate removal from aquatic environments.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Crystal structure and thermal behavior of three potential high-energy compounds of hydro-closo-borates with guanidinium

Rouzbeh Aghaei Hakkak, Thomas Schleid

Summary: The novel guanidinium hydro-closo-borates with [BnHn]2- (n = 10 and 12) anions were successfully synthesized via direct reaction. The crystal structures exhibit hydrogen bonding interactions and have the potential to facilitate H2 generation.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Synthesis of nano-crystal PVMo2W9@[Cu6O(TZI)3(H2O)6]4•nH2O for catalytically biodiesel preparation

Liqiang Ma, Pengpeng Wei, Jingfang Li, Liye Liang, Guangming Li

Summary: A novel catalyst, H4PVMo2W9O40@rht-MOF-1, was developed using a one-pot hydrothermal method. It exhibited high efficiency and reusability in esterification reactions.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Order-disorder transition and thermal behavior of paracelsian-type MGa2Ge2O8 (M = Sr, Ba) compounds

Liudmila A. Gorelova, Valentiva A. Yukhno, Maria G. Krzhizhanovskaya, Oleg S. Vereshchagin

Summary: Two new Ga-Ge disordered feldspar-related compounds were successfully synthesized using melt crystallization methods. Their stability and thermal expansion properties were studied under high-temperature conditions. The results showed that both compounds are stable within the studied temperature range and exhibit anisotropic thermal expansion.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Synthesis, structural study, and Na plus migration pathways simulation of the new phase Na3Al3(AsO4)4

Seifeddine Bdey, Nesrine Boussadoune, Francois Allard, Jacques Huot, Gabriel Antonius, Noura Fakhar Bourguiba, Pedro Nunez

Summary: The structure of a novel arsenate compound Na3Al3(AsO4)4 has been determined using X-ray diffraction. The crystal exhibits a monoclinic space group with suitable pathways for Na+ ion migration. The accuracy of the structural model was confirmed using various validation tools and density functional theory calculations.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Synthesis of new oxygen deficient triple layered perovskite oxides LaSr3Fe3-xCrxO10-δ (x=0.0, 0.2, and 0.5): Structural, optical, magnetic and photocatalytic properties

Amit Kumar Atri, Ujwal Manhas, Sumit Singh, Irfan Qadir, Shikha Sharma, Preteek Sharma, Devinder Singh

Summary: This study synthesizes new oxygen deficient triple layered Ruddlesden-Popper (RP) phases via sol-gel method and investigates the effects of Cr3+ doping on their structural, optical, magnetic, and photocatalytic properties. The experimental results demonstrate that Cr3+ doping alters the interactions and leads to excellent photocatalytic performance in some phases.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Downsizing FeNb11O29 anode material through ultrafast solid-state microwave-assisted synthesis for enhanced electrochemical performance

Dat Le Thanh, Amandine Guiet, Emmanuelle Suard, Romain Berthelot

Summary: In this study, FeNb11O29 powder samples were prepared using a microwave-assisted solid-state synthesis method for the first time. The samples obtained rapidly from submicrometric oxide precursors showed enhanced cycling performance, possibly due to the easier ionic diffusion occurring in the smaller particles.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Single-crystal structure and theoretical calculations of the second ternary tellurium borate Te2B2O7

Raimund Ziegler, Felix R. S. Purtscher, Thomas S. Hofer, Gunter Heymann, Hubert Huppertz

Summary: We have successfully synthesized a new tellurium borate crystal under high-pressure and high-temperature conditions. The crystal structure and theoretical calculations have been thoroughly discussed.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Two new multinary chalcogenides with (Se2)2- dimers: Ba8Hf2Se11(Se2) and Ba9Hf3Se14(Se2)

Subhendu Jana, Eric A. Gabilondo, Paul A. Maggard

Summary: This study reports the synthesis and characterization of two previously unknown multinary selenides, Ba8Hf2Se11(Se-2) and Ba9Hf3Se14(Se-2), which display unique structures and optoelectronic properties competitive with existing perovskite-type chalcogenides.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Research on mathematical algorithm to determine the chemical diffusion coefficient of hydrogen in CaZrO3 based proton conductor at high temperature

Fei Ruan, Chonggui Lei, Fenglong Zhang, Jinxiao Bao, Fen Zhou, Min Xie, Pengfei Xu, Jianquan Gao

Summary: Studying the diffusion properties of hydrogen is important for designing new proton conductors. In the past, the chemical diffusion coefficient of hydrogen in proton conductors was usually obtained through a manual calculation method, resulting in difficulty in controlling the calculation accuracy. To address this issue, a mathematical algorithm and C language computer program were developed to calculate the chemical diffusion coefficient based on Fick's second law and Romberg numerical integral. The algorithm showed high precision and powerful computing function, and has the potential to replace the manual calculation method in calculating the chemical diffusion coefficient for hydrogen in proton conductors.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Enhanced power factor and thermoelectric efficiency in Cu2Sn1- xYxSe3 system: A low-temperature study

Deepika Shanubhogue, Suraj Mangavati, Ashok Rao, Ru-Ting Tsao, Yung-Kang Kuo

Summary: In this study, the effect of Y doping at the Sn-site on the structural, electrical, and low-temperature thermoelectric properties of the Cu2SnSe3 system is investigated. Y-doped compounds Cu2Sn1-xYxSe3 show reduced electrical resistivity, enhanced power factor, and decreased thermal conductivity, resulting in higher ZT values.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Formamide-assisted synthesis of SnS2 nanosheets for high capacity and stable Li-ion battery

Wei Hong, Min Qing, Xun He, Lei Wang, Yu Pu, Qiyu Li, Zhimin He, Qin Dong, Rong Li, Xinglong Gou

Summary: This study developed a simple method to prepare SnS2 nanosheets and assembled them with MXene to form SnS2/MXene. The composite material exhibited abundant active sites, superior electron/ion transfer kinetics, and a unique 2D interlayer structure, resulting in high specific capacity, outstanding rate capability, and excellent cycling stability, with potential applications in LIBs.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Assembly of two trinuclear-cluster-based metal-organic frameworks: Structures and methanol electro-oxidation properties

Heng-Yu Ruan, Xue-Qian Wu, Tian-Yu Zhang, Yi Yuan, Le Wang, Ya-Pan Wu, Qing-Wen Han, Ruan Chi, Dong-Sheng Li

Summary: Two isostructural metalorganic frameworks (MOFs), CTGU-36-Co and CTGU-36-Ni, were synthesized, and CTGU-36-Ni demonstrated high activity as a molecular electrocatalyst for the methanol oxidation reaction.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

Article Chemistry, Inorganic & Nuclear

Synthesis, structural, morphology, spectroscopic and optical study of new metal orthophosphate MII(Ga0.5Sb0.5)(PO4)2 (MII= Sr, Pb, Ba) compounds

Rachid Fakhreddine, Ali Ouasri, Abderrahim Aatiq

Summary: This paper reports the synthesis, structure, and spectroscopic studies of three novel metal orthophosphate salts. The structures of these compounds were refined using X-ray powder diffraction data. The infrared and Raman analysis revealed their symmetries and the UV-visible investigation determined their optical properties.

JOURNAL OF SOLID STATE CHEMISTRY (2024)