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Τρίτη 25 Ιουνίου 2019

Synthesis of cyclic carbonate by CO 2 fixation to epoxides using interpenetrated MOF-5/ n -Bu 4 NBr
Abstract Phase-pure interpenetrated MOF-5 ([Zn4(O)(BDC)3]) was synthesized by pH* control in a reaction medium, and its stability in the presence of epoxides was confirmed by powder X-ray diffraction analysis. Interpenetrated MOF-5/tetra-n-butylammonium bromide (int-MOF-5/n-Bu4NBr) showed a high catalytic activity toward CO2 fixation to epoxide to synthesize cyclic carbonates. The conversions of propylene oxide (PO) and styrene oxide (SO) by int-MOF-5/n-Bu4NBr were almost two...
Latest Results for Journal of Materials Science
12h
Synthesis and characterization of carbonyl iron@epoxy core–shell microspheres for enhanced microwave absorption performance
Abstract Carbonyl iron powder (CIP) coated with a layer of epoxy (EP) shell, denoted as core–shell CIP@EP composites, were designed and prepared via in situ polymerization. The CIP@EP composites containing 4.5–6.8 wt% EP were systematically characterized by X-ray diffraction, Fourier transform infrared spectroscopy, vibrating sample magnetometer, scanning and transmission electron microscopy, and vector network analyzer. The results indicated that CIP@EP composites with 9–254 nm...
Latest Results for Journal of Materials Science
12h
Balancing hyperbole and impact in research communications related to lead-free piezoelectric materials
Latest Results for Journal of Materials Science
12h
Preparation of PAN-based carbon fiber@MnO 2 composite as an anode material for structural lithium-ion batteries
Abstract Carbon fiber@MnO2 composite (CF@MnO2) has been successfully synthesized based on the redox mechanism, and the morphological and electrochemical features are also studied. As a promising anode material for structural lithium-ion batteries (SLIBs), CF@MnO2 composite presents a coulombic efficiency of over 99% and good cyclic ability. It performs a high reversible capacity of 648 mAh g−1 after 150 cycles at a current density of 100 mA g−1, approximately 2.5 times as high...
Latest Results for Journal of Materials Science
12h
Boosting the performance of delafossite photocathode through constructing a CuFeO 2 /CuO heterojunction for photoelectrochemical water reduction
Abstract CuFeO2 is a promising photocathode material with favorable band gap and chemical stability in alkaline electrolytes. However, CuFeO2 is suffered from poor photoinduced electron–hole separation and collection. In this paper, we utilize a heterojunction strategy for inhibiting charge recombination and enhancing its photoelectrochemical performance. CuFeO2/CuO heterojunction photocathodes were prepared by a facile spin coating method, which were used for photoelectrochemical...
Latest Results for Journal of Materials Science
12h
Tuning the physiochemical properties of bacterial cellulose: effect of drying conditions
Abstract Bacteria have an ability to produce cellulose in pure form without any impurities such as hemicellulose and lignin, unlike plant cellulose. Bacterial cellulose as-produced with 3-D interwoven nanofibrous network is superior to plant cellulose in terms of mechanical properties, porosity, crystallinity, water holding capacity, and sustainability. In its natural form, bacterial cellulose is in the form of a hydrogel, which implies high porosity and holding capacity, however,...
Latest Results for Journal of Materials Science
12h
Solution-processed mixed halide CH 3 NH 3 PbI 3−x Cl x thin films prepared by repeated dip coating
Abstract The mixed halide CH3NH3PbI3−xClx crystalline thin film has been prepared by two-step solution-processed repeated dip coating method at an ambient atmosphere. X-ray diffraction study reveals the presence of tetragonal and cubic phases in deposited film. Raman study confirms the metal halide bond in the inorganic framework and organic CH3 stretching/bending of C–H bond in CH3NH3PbI3−xClx perovskite. Scanning electron microscopy shows that cuboid and polyhedral-like crystal...
Latest Results for Journal of Materials Science
12h
Preparation of (V x , Ti 1−x ) 2 C MXenes and their performance as anode materials for LIBs
Abstract MXenes as anode materials for Li-ion batteries (LIBs) have shown excellent electrochemical performance, and they still have great potential. To explore the effect of chemical composition on their electrochemical performance, herein we report an approach for preparation of (Vx, Ti1−x)2C MXenes (x = 1, 0.7, 0.5, 0.3, 0) via etching their precursor solid solutions of (Vx, Ti1−x)2AlC. The exfoliated (Vx, Ti1−x)2C MXenes with good multilayered morphology exhibit good electrochemical...
Latest Results for Journal of Materials Science
12h

The other H-index: the hyperbole index
Latest Results for Journal of Materials Science
12h
Swift heavy ion-irradiated multi-phase calcium borosilicates: implications to molybdenum incorporation, microstructure, and network topology
Abstract A series of calcium borosilicate glasses with varying [B2O3], [MoO3], and [CaO] were prepared and subjected to 92 MeV Xe ions used to simulate the damage from long-term α-decay in nuclear waste glasses. Modifications to the solubility of molybdenum, the microstructure of separated phases, and the Si–O–B network topology were investigated following five irradiation experiments that achieved doses between 5 × 1012 and 1.8 × 1014 Xe ions/cm2 in order to test the hypotheses...
Latest Results for Journal of Materials Science
12h
A sulfonated PEEK/PCL composite nanofibrous membrane for periosteum tissue engineering application
Abstract The favorable mechanical property and regenerative capacity of bone graft are extremely important for the reconstruction of the large bone defect. Polyetheretherketone (PEEK) has tailored elastic modulus to natural cortical bone, while its application is limited by bio-inert surface. Tissue-engineered periosteum exhibits improved osteogenesis-inducing capacity. However, the present artificial periosteum is difficult to effectively anchor to bone grafts. The use of PEEK-based...
Latest Results for Journal of Materials Science
12h
PPTA-oligomer functionalized multiwalled carbon nanotubes synthesized by “one-pot” method for reinforcement of polyvinyl chloride
Abstract Multiwalled carbon nanotubes (MWNTs) are fillers of choice for composite reinforcement owing to their outstanding modulus and strength. However, the poor dispersion and load transfer between MWNTs and matrix still limit their potential and further application of MWNTs in mechanical reinforcement. In this paper, we report a facile “one-pot” method for functionalization of MWNTs with PPTA-oligomer (o-PPTA). The obtained o-PPTA functionalized multiwalled carbon nanotubes...
Latest Results for Journal of Materials Science
12h
Structural design of MoS 2 -based coatings toward high humidity and wide temperature
Abstract The lubrication of pure MoS2 coating for the application in air environment has been commonly limited owing to its loose structure, low hardness, and high humidity sensitivity. To overcome such drawbacks, MoS2/Pb–Ti composite and multilayer coatings were deposited by unbalanced magnetron sputtering system. And subsequently, the oxidation resistance and tribological properties of such MoS2-based coatings were studied after 30 days of exposure under different temperatures...
Latest Results for Journal of Materials Science
12h
Antimicrobial activity of biocomposite films containing cellulose nanofibrils and ethyl lauroyl arginate
Abstract Food packaging is tailored to keep food fresh by increasing shelf life and preventing microbial deterioration. However, traditional food packaging is commonly made from non-degradable polymers without antimicrobial properties and that pose an environmental threat if not disposed properly. To address this issue, here we describe the preparation of cellulose nanofibril (CNF) films and hydrogels with antimicrobial activity against common foodborne pathogens such as verotoxigenic...
Latest Results for Journal of Materials Science
12h
Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings
Abstract The present research work focuses on the synthesis, characterization and properties of novel polyelectrolyte multilayered microcapsules used as smart additives in organic coatings for corrosion protection of steel parts. Urea formaldehyde microcapsules encapsulated with linalyl acetate (UFMCs), sensitive to mechanical stimulus, were synthesized by in situ emulsion polymerization technique. In the next step, dodecylamine, working as a pH stimulus corrosion inhibitor,...
Latest Results for Journal of Materials Science
12h

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