IR laser-induced chemical vapor deposition of carbon-coated iron nanoparticles embedded in polymer

Abstract

Co-decomposition of gaseous mixtures of silacyclopent-3-ene and Fe(CO) 5 by irradiation at (9 + 10) and (9 + 10 + 5) mm from two CO 2 lasers is reported. In a one-step process, this produced nanosized (a-Fe)-based particles that consist of both superparamagnetic and ferromagnetic phases. They were enveloped within a thin graphitic shell and embedded in an organosilicon polymer matrix. Properties of the nanocomposites, examined by infrared and Raman spectroscopies, high resolution transmission electron microscopy and magnetization studies, are shown to differ for the 2l and 3l irradiations. The latter consist of smaller Fe-based nanoparticles, display less graphitic carbon, possess more abundant Si/C/H phases and have their cores richer in Fe and superparamagnetic phase.

Direct Electrochemistry of Hemoglobin Immobilized on Carbon‐Coated Iron Nanoparticles for Amperometric Detection of Hydrogen Peroxide

“…So it can be resistant against corrosion and oxidation and has a small average size, which makes it highly promising for applications [23]. To the best of our knowledge, there are few researches to explore the application of this kind of nanomaterial in Hb immobilization and biosensors fabrication till now.…”

“…Carbon-coated iron nanoparticle (CIN) is a novel kind of magnetic nanomaterials, which was obtained by coating a layer of carbon uniformly on the surface of nanoscale iron and is different from the normal nanosized carbon-metal composites. So it can be resistant against corrosion and oxidation and has a small average size, which makes it highly promising for applications [23]. To the best of our knowledge, there are few researches to explore the application of this kind of nanomaterial in Hb immobilization and biosensors fabrication till now.…”

Preparation and magnetic properties of Fe/Si/C/N ceramics derived from a polymeric precursor

“…It elucidates: (i) the nanoparticles are identified as Fe‐based particles that most contain Fe, and also little Si and C; (ii) the stoichiometry of the matrix is Fe 1.0 Si 7.42 N 5.18 C 9.24 O 4.33. It should be noted a significant content of O is due to the oxidation of the samples in air when they are fabricated and transferred to the microscope 24…”

Исследование Испарения Лазерно-Нагретых Железо-Углеродных Наночастиц При Помощи Анализа Их Теплового Излучения

“…Углеродная оболочка таких наночастиц делает их стойкими к окислению и коррозии, позволяет взаимодействовать с органическими соединениями, а металлическое ядро этих структур обладает магнитными и каталитическими свойствами. Способам синтеза таких наночастиц и описанию их магнитных свойств посвящено большое число исследований [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. В то же время термодинамические свойства таких частиц, в частности параметры испарения, важные при практическом их применении, практически не исследованы.…”