Structure and electrochemical properties of magnetite and polypyrrole nanocomposites formed by pyrrole oxidation with magnetite nanoparticles
نویسندگان
چکیده
Abstract Nanocomposite of magnetic Fe 3 O 4 nanoparticles and polypyrrole was prepared under sonication by a new chemical polymerization method during which acted both as pyrrole oxidant component in the composite material. Synthesis this nanocomposite carried out aqueous solution acidified to pH 2, prerequisite for formation these types material facilitate oxidation nanoparticles. In way, two kind materials were produced: /PPy magnetite dispersed PPy matrix -aggregates@PPy that exhibits structure aggregates are surrounded layer polymeric phase. latter case, process took place presence surfactant. These nanocomposites characterized electron microscopy techniques, IR spectroscopy, X-ray powder diffraction, photoelectron spectroscopy thermogravimetry. Particular attention focused on study electrochemical properties formed composites. The reversible behaviour upon oxidation. electrode organic solvents such acetonitrile dichloromethane is very similar an solution.
منابع مشابه
Thermal Stability and Magnetic Properties of Polyvinylidene Fluoride/Magnetite Nanocomposites
This work describes the thermal stability and magnetic properties of polyvinylidene fluoride (PVDF)/magnetite nanocomposites fabricated using the solution mixing technique. The image of transmission electron microscopy for PVDF/magnetite nanocomposites reveals that the 13 nm magnetite nanoparticles are well distributed in PVDF matrix. The electroactive β-phase and piezoelectric responses of PVD...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولA Comparison between Chemical Synthesis Magnetite Nanoparticles and Biosynthesis Magnetite
The preparation of Fe3O4 from ferrous salt by air in alkaline aqueous solution at various temperatures was proposed. The synthetic magnetites have different particle size distributions. We studied the properties of the magnetite prepared by chemical methods compared with magnetotactic bacterial nanoparticles. The results show that crystallite size, morphology, and particle size distribution of ...
متن کاملBio-synthesis of magnetite nanoparticles by bacteria
A promising avenue of research in materials science is to follow the strategies used by Mother Nature to fabricate ornate hierarchical structures as exemplified by organisms such as diatoms, sponges and magnetotactic bacteria. Some of the strategies used in the biological world to create functional inorganic materials may well have practical implications in the world of nanomaterials. The aim o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Solid State Electrochemistry
سال: 2023
ISSN: ['1433-0768', '1432-8488']
DOI: https://doi.org/10.1007/s10008-023-05554-2