Abstract
Metal colloids in 2-mercaptoethanol using nanoparticles (NPs) of iron (Fe), cobalt (Co), and nickel (Ni) were prepared by chemical liquid deposition method. Transmission electron microscopy, electron diffraction, UV-VIS spectroscopy, and scanning electron microscopy with electron dispersive X-ray spectroscopy characterized the resulting colloidal dispersions. The NPs exhibited sizes with ranges from 9.8 nm for Fe, 3.7 nm for Co, and 7.2 nm for Ni. The electron diffraction shows the presence of the metals in its elemental state Fe (0), Co (0), and Ni (0) and also some compounds FeO (OH), CoCo2S4, and NiNi2S4.
Highlights
Research on mesoscopic to nanoscopic scale materials has gained great momentum
The application of construction techniques of materials atom by atom allows the synthesis of materials of the order of nanometers called “nanomaterials.” This type of investigations has a strategic importance which it concerns to the development of new materials of great functionality and for the integration of inorganic, organic, and biological materials
The kinetic stability was measured in terms of its power of flocculation at room temperature
Summary
Research on mesoscopic to nanoscopic scale materials has gained great momentum. Colloidal dispersions can be stable for long periods, sometimes years, they tend to settle slowly by the action of gravity, in prolonged rest This occurs when suspended particles that are thermodynamically unstable form agglomerates of greater size and weight and flocculate.[12] In this way, it is understood that the stabilization of the colloid dispersions can be controlled from its synthesis to obtain the desired characteristics and to manage to take advantage of them and to maintain them in the time. To our knowledge is the first reports using this methodology to obtain several metal colloids prepared using 2-mercaptoethanol by chemical liquid deposition (CLD).[14,15,16] These solutions were characterized by several techniques to describe composition, properties, and behavior in order to explain their stability based on the effects of the solution and the metal used.[17]. The electrophoresis measurements were performed ina a Zeta Meter 3.0 Model and 0.1 mL of colloid in 2-mercaptoethanol is placed in a cell, which applies a potential difference and the rate of migration of the particles is measured
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