Materials Literature
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Отримано напiвпровiдниковi наночастинки CdS з використанням бактерiї Escherichia coli. Показано, що максимум їх люмiнесценцiї знаходиться на довжинi хвилi 443 нм, що є типовим для наночастинок сульфiду кадмiю, синтезованих з використанням мiкроорганiзмiв. За допомогою спектрального аналiзу вперше дослiджено стабiльнiс…
대기 중 이산화탄소의 재활용 기술과 재생에너지에 의한 물 분해 기술의 접목이 최근 가능해지면서 메탄올은 많은 관심을 받고 있다. 경제성이 유리하도록 메탄올 경제를 실현하기 위해서는 고활성 메탄올 합성 촉매를 제조하여야 하며, 이를 위해서는 논리적인 접근법이 필요하다. 공침법을 통해 제조하는 Cu/ZnO 기반의 촉매는 침전, 숙성, 여과, 세척, 건조, 소성, 환원 등의 복잡한 단계로 제조되며, 100년의 역사를 가지고 있음에도 불구하고 최근에야 침전 화학과 촉매 나노구조에 대한 기초적인 이해가 이루어지고 있다. 이에 본 고에서는 단계별로 합성 변수가 침전, 소성,…
ABSTRACT The influence of water content on liquid crystalline (LC) gel formation and the rheological behavior of a ternary microcrystalline cellulose (MCC)/1‐ehtyl‐3‐methylimidazolium acetate (EmimAc)/water system was investigated using polarized optical microscopy (POM) and rheometry. POM indicated that the distinct…
Abstract In this work, PA-6 nanocomposites containing different amounts of nanoclay (NC) were prepared using a corotating twin-screw extruder. In practice, it is hard task to identify the relationship between the extrusion process parameters and the tensile modulus of PA-6 nanocomposites by performing several experime…
Abstract BACKGROUND Application of perfluorocarbon based liquid/liquid two‐phase systems for cell culture expansion has been investigated at small scale for more than 30 years and it has been established that such systems are able to support the survival of a variety of cell lines. Application of drops in liquid/liqui…
The aim of this study was to understand the effects of pH (5, 6, 7, 8, 9) and activated carbon (AC) concentration (0.01, 0.1, 1, 10, 100 g/L) on the removal of a colloidal solution of nanoparticles (NPs) (ZnO + CuO) using AC in batch kinetic studies. Results revealed that adsorption capacities of AC for Zn and Cu (ind…
Cationic substitution of zirconium in ceria (CeO 2 ) greatly improves its oxygen storage capacity (OSC) and thermal stability. Although the fluorite structure of Ce 0.5 Zr 0.5 O 2 (Ce 2 Zr 2 O 8 ) exhibits good oxygen storage and release properties, its reduced counterpart Ce 2 Zr 2 O 7 in the pyrochlore structure der…
Catharanthus roseus leaf extract has potential efficien-cy for the formation of biosynthesized zinc oxide (ZnO) nanoparticles against dye degradation with various time intervals. The leaves of C. roseus were utilized as reducing agent for the formation of metal precursors into metal oxide nanoparticles. C. roseus -med…
The general objectives of this research were to investigate the effect of the support and the gas atmosphere on the decomposition and reduction of cobalt nitrate hexahydrate supported on silica and alumina to gain a greater understanding of the calcination and reduction procedures used in catalyst manufacturing proces…
In the present manuscript a new concept of completely inorganic intumescent flame retardant nanocoating comprised of sodium montmorillonite nanoplatelets embedded in an ammonium polyphosphate matrix has been investigated using cotton as model substrate. The coating, deposited by multistep adsorption from diluted water…
ABSTRACT The bicomponent meltblown process offers to associate two polymers in the same fiber generating fibrous media with new properties. In this study, we associate polypropylene (PP) and poly(lactic acid) (PLA), from renewable sources, polymers. The influence of primary air flow rate and the structural properties…
Ni-MoS 2 composite coatings are used as the protective coatings against hydrogen embrittlement (HE) in quenching & partitioning (QP) steels for the first time. The protective performances of Ni-MoS 2 composite coatings electroplated in a Watts bath containing different concentrations of MoS 2 nanosheets, were assessed…
ABSTRACT A deoiled press cake resulting from twin‐screw extrusion of coriander fruits was used as a raw material for the production of self‐bonded boards. The operating parameters for thermopressing were varied and include the applied pressure (19.6–39.2 MPa), molding time (60–300 s), and molding temperature (155–205…
Abstract The ZrO 2 ‐MgO nanocomposites were synthesized using a new sol‐gel method with sucrose and tartaric acid as a gel agent. The samples were characterized by thermal analysis (TG/DTA), X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), en…
Among different inert materials, quantum dots have been qualified by their fashion proprieties especially those related to structure and sizes. This review talks about the structural identity and some relevant methods to synthesize quantum dots, there is a challenge in the adaptation of nanoparticles to fulfill the bi…
Cortex Periplocae, as a traditional Chinese herbal medicine, has been widely used for autoimmune diseases, especially rheumatoid arthritis. Due to its potential pharmaceutical values, more studies about the biological activities of Cortex Periplocae have been conducted recently. Meanwhile, the adverse reaction of Cort…
Extracellular matrix microfibrils are critical components of connective tissues with a wide range of mechanical and cellular signalling functions. Collagen VI is a heteromeric network-forming collagen which is expressed in tissues such as skin, lung, blood vessels and articular cartilage where it anchors cells into th…
Oligosaccharide elicitors from pathogens have been shown to play major roles in host plant defense responses involving plant–pathogen chemoperception and interaction. In the present study, chitosan and oligochitosan were prepared from pathogen Fusarium sambucinum, and their effects on infection of Zanthoxylum bungeanu…
ABSTRACT The growing pollution of the environment with plastic debris is a global threat which urgently requires biotechnological solutions. Enzymatic recycling not only prevents pollution but also would allow recovery of valuable building blocks. Therefore, we explored the existence of microbial polyesterases in micr…
Fe 3 O 4 /PPy/PANI (Fe 3 O 4 /polypyrrole/polyaniline) nanocomposites with excellent microwave absorbing properties have been successfully synthesized and characterized systematically. In detail, Fe 3 O 4 nanoparticles were prepared via an environmental friendly, modified co-precipitation method. Afterward, two conduc…