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Gustavo Morari Do Nascimento

Universidade Federal do ABC

Dr. Gustavo Morari do Nascimento has a position as professor at Federal University of ABC. It has strong experience in many fields related to characterization of nanomaterials by using spectroscopic techniques associated to microscopic resolution. It obtained a doctoral degree from University of São Paulo (USP) on 2004 writing a thesis about spectroscopic characterization of nanocomposites formed by conducting polymers and clays. Afterwards, it spent on 2007/2008 a post-doctoral degree at Massachusetts Institute of Technology (MIT) in the resonance Raman study of double-walled carbon nanotubes doped with halogens under guidance of the legendary Mildred S. Dresselhaus. Back to Brazil, it has spent three years (2009-2011) at Federal University of Minas Gerais (UFMG) working with synthesis of nanostructured carbon modified with molecular magnets. Nowadays, his research focus is on molecular characterization of modified carbon nanostructured materials and polymer nanocomposites by using different spectroscopic techniques. Resonance Raman and SERS (surface enhanced Raman spectroscopy) coupled to microscopy techniques added to X-ray absorption techniques at National Synchrotron Light Laboratory have been the main techniques employed in the investigation.

Links

Institution website

2books edited

3chapters authored

Latest work with IntechOpen by Gustavo Morari Do Nascimento

This book presents the state-of-the-art results of characterization of clays, clay minerals and ceramic materials based on clay minerals. The main goal of this work is to contribute to the rationalization of some important results obtained in the open area of clays and clay materials characterization. Moreover, this book also provides a comprehensive account on polymer and biopolymer-clay nanocomposites, use of clay as adsorption materials for industrial pollutants, ceramic materials in cultural heritage and physical-chemistry aspects of clay and clay minerals aqueous dispersions. This book will be beneficial for students, teachers and researchers of many areas who are interested to expand their knowledge about clays and its derivates in the fields of Nanotechnology, Biotechnology, Environmental Science, Industrial Remediation, Cultural Heritage, etc.

Clays, Clay Minerals and Ceramic Materials Based on Clay MineralsEdited by Gustavo Morari Do Nascimento

Clays, Clay Minerals and Ceramic Materials Based on Clay Minerals

Edited by Gustavo Morari Do Nascimento

Books edited

Raman SpectroscopyEdited by Gustavo Morari Do Nascimento

Raman Spectroscopy

Edited by Gustavo Morari Do Nascimento

Chapters authored

Spectroscopy of Polyaniline Nanofibers

By Gustavo M. Do Nascimento

Part of the book: Nanofibers

Structure of Clays and Polymer–Clay Composites Studied by X-ray Absorption Spectroscopies

By Gustavo M. Do Nascimento

A wide range of spectroscopic techniques employ higher-energy electromagnetic radiation, ranging from vacuum UV (≈10−40 eV, 125−31 nm), including soft X-rays (40−1500 eV, 31−0.8 nm), and going to hard X-rays (1500−105 eV, 0.8−0.01 nm) for elucidating molecular structures of chemical and biological interest. A typical X-ray absorption (XAS) spectrum has a large absorption near the edge followed by serial oscillations that gradually fade away. This set of oscillations extends over a wide energy range and can be divided into two regions: the absorption near the edge is called XANES (X-ray absorption near-edge structure) and the second region is the so-called EXAFS (extended X-ray absorption fine structure). The XAS data enables the determination of crystallographic parameters and also the signal intensity contains information of the oxidation state and the chemical bond in the solid. For instance, theoretical calculations were essential to verify the differences between the oxygen and silicon sites in clays. Experimental and theoretical EXAFS studies of clays with Cu(II) show that Cu(II) has interchangeable octahedral, tetragonal, and square planar coordinations in the clay interlayer, depending on Cu(II) loading and degree of hydration. XANES data of intercalated poly(aniline) show new bands at 398.8 eV and 405−406 eV, which were assigned to new chromophoric segments formed within the galleries of the Montmorillonite clay. Hence, in this chapter, this amazing new area will be reviewed concerning the state-of-the-art results of characterization of their structural features. Previous and new results of the X-ray absorption spectroscopy of clays and polymer–clay materials obtained by our group will be considered. The main goal of this work is to contribute to the rationalization of some important results obtained in the open area of clays and clay materials characterization.

Part of the book: Clays, Clay Minerals and Ceramic Materials Based on Clay Minerals

Introductory Chapter: The Multiple Applications of Raman Spectroscopy

By Gustavo M. Do Nascimento

Part of the book: Raman Spectroscopy

Related collaborators

Jorge J. Santiago-Aviles

Young-Seak Lee

Silvia G Prolongo

Ricardo Vieira

Gyeong-Man Kim

M Deka

Ji Sun Im

Idalia Ramos

María Gude

Alejandro Ureña