(Photo)catalyst characterization techniques: Adsorption isotherms and BET, SEM, FTIR, UV-Vis, photoluminescence, and electrochemical characterizations

Giovanni Palmisano, Marianna Bellardita, Sedat Yurdakal, Levent Özcan, Corrado Garlisi, Giovanni Palmisano

Research output: Chapter in Book/Report/Conference proceedingChapter

16 Citations (Scopus)

Abstract

This chapter reports on some characterization techniques that are commonly used for catalysts and photocatalysts. Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), UV-visible (UV-Vis), photoluminescence (PL), and electrochemical characterization techniques are presented with experimental details and actual case studies from literature are discussed. The chapter starts with adsorption phenomena on (photo)catalysis and adsorption isotherms are presented. Then BET analysis technique and its applications in (photo)catalysis are explained. Morphological properties (SEM), functional groups, and the interaction of substrate (and intermediates) with the catalyst under dark or under irradiation are discussed using the FTIR technique. The discussion moves on with estimation of band-gap energies and oxidation states of loaded or metal-doped catalysts (through UV-Vis), and to the identification of impurity/defects levels and the investigation of recombination mechanisms by PL. Finally, as electrochemical characterizations, linear sweep and cyclic voltammetry, chronoamperometry (photocurrent), electrochemical impedance spectroscopy, and Fermi level estimation are presented. Special attention is given to comparative assessment between catalysts and photocatalysts, for both powder and supported samples.
Original languageEnglish
Title of host publicationHeterogeneous Photocatalysis: Relationships with Heterogeneous Catalysis and Perspectives
Pages87-152
Number of pages66
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Chemical Engineering

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