Rapid and sensitive detection methods are in urgent demand for the screening of extensively used organophosphorus pesticides and highly toxic nerve agents for their neurotoxicity. In this study, we developed a novel Fe3O4 magnetic nanoparticle (MNP) peroxidase mimetic-based colorimetric method for the...
To be balanced, every element in Fe3O4 + H2O2 + H2SO4 = Fe2(SO4)3 + H2O must have the same number of atoms on each side of the equation. When using the inspection method (also known as the trial-and-error method), this principle is used to balance one eleme...
The significant higher catalytic activity of the fine Fe3O4NPs mainly originated from the higher specific surface area, due to the increase in exposed active site number and adsorption capacity. The reusability of 30 nm Fe3O4NPs was also investigated after three successive runs, in which the ...
In some cases, these synthetic strategies require either an air-rich environment or high temperatures leading to oxidation of ferrous ions of the magnetite and consequently decreased magnetic properties and Fenton efficiency [21]. Herein we provide a simple approach to prepare ZnO-Fe3O4 hybrid ...
In this research, Fe3O4@SiO2@NTMPThio-Cu was introduced as a novel and green heterogeneous nanocatalyst with a dendrimer template that is environmentally friendly and reusable based on Fe3O4@SiO2. In this way, magnetic silica nanoparticles were first mod
In addition, large number of interfacial polarization existed between Fe3O4 and CNTs can also contribute to their microwave absorption performances. Download: Download high-res image (862KB) Download: Download full-size image Fig. 6. The Z values of pure Fe3O4 and Fe3O4/CNTs composites (a...
Dumbbell-like Au-Fe(3)O(4) nanoparticles are synthesized using decomposition of Fe(CO)(5) on the surface of the Au nanoparticles followed by oxidation in s... H Yu,M Chen,PM Rice,... - 《Nano Letters》 被引量: 1697发表: 2005年 3D Nitrogen-Doped Graphene Aerogel-Supported Fe3O4 Na...
This study investigates the synthesis of CuO/Ni/Fe3O4 nanocomposite (NC) using gallic acid, as well as its catalytic performance in CO2 methanation and photocatalytic hydrogen generation. UV-visible spectroscopy analysis revealed a prominent absorption peak at 370 nm and a band gap energy of 1...
The change in the surface properties of Fe3O4/SiO2/P(2-CEA) composite polymer particles following pH change is confirmed from the pH-dependent sorption of cationic methylene blue (MB) and anionic methyl orange (MO) dye molecules. The opening of the pH-responsive P(2-CEA) gate valve at ...
(B) occupied by both Fe3+and Fe2+form the basis for two antiparallel magnetic sublattices. The number of spins at sites A and B is unequal, resulting in ferrimagnetism in magnetite below the Curie temperature of 580 °C16. Fe3O4magnetic nanoparticles exhibit superparamagnetism with high ...