Caracterização por microscopia eletrônica de (nano) compósitos envolvendo dióxido de titânio e carvão hidrotérmico

Abstract

The demand for the use of (nano)composite materials, in the most different areas, has been strongly influenced by multifunctional requirements, stimulating the creation of so-called multifunctional (nano)composite materials. Hydrothermal carbonisation is a spontaneous and exothermic process that is used, among other purposes, in the preparation of (nano)composites, especially those that are composed of renewable carbon sources. Scanning electron microscopy is normally used to observe the surface of samples. It has an electron beam that strikes the sample, causing several emitted radiations. Information about topography, crystallography, and composition can be acquired by appropriate uptake of these emitted radiations. The aim of this work was to clarify and add information about the (nano)composites of titanate nanotubes and hydrothermal carbon, obtained through the hydrothermal carbonization of different carbon sources (glucose, chitosan and cellulose). Its characterization was performed through the scanning electron microscopy and energy dispersive spectroscopy techniques. With the electronic images acquired by the scanning electron microscopy and the semiquantitative analysis from the energy dispersive spectroscopy, it was possible to analyze the heterogeneity in each of the samples evaluated. Attached to this work is a design of a four-pronged probe in the final assembly phase.