Starting from the late seventies, the progressively increased availability of synchrotron light sources allowed the execution of experiments requiring a high X-ray flux in a continuous interval [1-4]. Among the various techniques developed, X-ray absorption spectroscopy (XAS, also known as X-ray absorption fine-structure, XAFS) [5-13] in both near (XANES) and post (EXAFS) edge regions, has become a powerful characterization technique widely employed in many research fields concerning inorganic chemistry, such as catalysis [13-17], organometallic and coordination complexes [18], metal nanoparticles [19,20], electrochemical processes [21,22], coordination polymers or metallorganic frameworks [23], bio-inorganic molecules including metalloproteins [24-27], chemistry of actinide elements [28], solid state chemistry [12,29-31]. In this chapter, we will provide a brief introduction to the basic theory of XAS spectroscopy (Section 2), followed by selected examples having some didactic perspective (Sections 3-7). For the sake of brevity, only a fraction of the subjects mentioned above will be discussed; in particular, the chapter will deal with: the reactivity of the CuCl2/Al2O3-based catalysts for ethylene oxychlorination (Section 3); the structure, the electronic configuration and the reactivity of Cp2Cr molecules encapsulated in porous solids (Section 4); the structural characterization of metal complexes in solution (Section 5); the structural characterization of the UiO-66 and UiO-667 class of metallorganic frameworks (Section 6); and the determination of the local structure of an AlxwGaywIn1-xw-ywAs/AlxbGaybIn1-xb-ybAs strained heterostructure grown on InP by metallorganic vapour phase epitaxy (Section 7) as an example of space resolved EXAFS applied to a topic pertinent to solid state chemistry.

Structural and electronic characterization of nano-sized inorganic materials by X-ray Absorption Spectroscopies

BORFECCHIA, ELISA;AGOSTINI, Giovanni;BORDIGA, Silvia;GROPPO, Elena Clara;GARINO, Claudio;GOBETTO, Roberto;AGOSTINO, Angelo;MINO, LORENZO;TRUCCATO, Marco;LAMBERTI, Carlo
2013-01-01

Abstract

Starting from the late seventies, the progressively increased availability of synchrotron light sources allowed the execution of experiments requiring a high X-ray flux in a continuous interval [1-4]. Among the various techniques developed, X-ray absorption spectroscopy (XAS, also known as X-ray absorption fine-structure, XAFS) [5-13] in both near (XANES) and post (EXAFS) edge regions, has become a powerful characterization technique widely employed in many research fields concerning inorganic chemistry, such as catalysis [13-17], organometallic and coordination complexes [18], metal nanoparticles [19,20], electrochemical processes [21,22], coordination polymers or metallorganic frameworks [23], bio-inorganic molecules including metalloproteins [24-27], chemistry of actinide elements [28], solid state chemistry [12,29-31]. In this chapter, we will provide a brief introduction to the basic theory of XAS spectroscopy (Section 2), followed by selected examples having some didactic perspective (Sections 3-7). For the sake of brevity, only a fraction of the subjects mentioned above will be discussed; in particular, the chapter will deal with: the reactivity of the CuCl2/Al2O3-based catalysts for ethylene oxychlorination (Section 3); the structure, the electronic configuration and the reactivity of Cp2Cr molecules encapsulated in porous solids (Section 4); the structural characterization of metal complexes in solution (Section 5); the structural characterization of the UiO-66 and UiO-667 class of metallorganic frameworks (Section 6); and the determination of the local structure of an AlxwGaywIn1-xw-ywAs/AlxbGaybIn1-xb-ybAs strained heterostructure grown on InP by metallorganic vapour phase epitaxy (Section 7) as an example of space resolved EXAFS applied to a topic pertinent to solid state chemistry.
2013
Inorganic Micro- and Nanomaterials. Synthesis and Characterization
De Gruyter
93
136
9783110306873
http://www.degruyter.com/view/books/9783110306873/9783110306873.93/9783110306873.93.xml
X-ray Absorption Spectroscopy; Nanomaterials, EXAFS, XANES, Catalysis, ethylene oxychlorination, Operando experiments, Cp2Cr, MOF, metallorganic complexes, X-ray micro beams, III-V semiconductors, optoelectronics
E. Borfecchia; G. Agostini; S. Bordiga; E. Groppo; C. Garino; R. Gobetto; A. Agostino; L. Mino; M. Truccato; D. Gianolio; A. Piovano; G. Martinez-Cria...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/141457
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