**Section II: Characterization**

Chapter 2, "Infrared Characterization and Electrochemical Study of Silanes Grafted into Surface of Copper" by Mashmoudi Mohamed, investigates the adsorption of γ-MPS and γ-APS onto pure copper at different dried conditions and studies the possibility of using these two coupling agents' treatment on copper to enhance its corrosion protective performance.

Chapter 3, "Fabrication and Characterization of Cobalt-Pigmented Anodized Zinc for Photocatalytic Application" by Judith Chebwogen and Christopher Mkirema Maghanga, shows that ZnO film pigmented with cobalt for 20 seconds was found to be the most photocatalytic with a rate constant of 0.0317hr-1. Thus, it had the optimum cobalt concentration for photocatalytic water treatment and can be applied in small-scale water purification.

### **Section III: Nanoparticles**

Chapter 4, "Diverse Synthesis and Characterization Techniques of Nanoparticles" by Agnes Chinecherem Nkele and Fabian I. Ezema, provides insight into the knowledge of nanoparticles, their classifications, parameters affecting their efficient performance, and synthesis and characterization techniques.

Chapter 5, "Roles of Cobalt Doping on Structural and Optical of ZnO Thin Films by Ultrasonic Spray Pyrolysis" by Sabrina Roguai and Abdelkader Djelloul, shows how the authors obtained thin layers of ZnO, Zn1-xCoxO deposited by the ultrasonic pyrolysis spray technique at a temperature of 450°C lasting 30 min. The authors report the structural and optical properties of these thin films. Particular attention is given to the theoretical methods used for determining the dispersion parameters of the films using only a single transmission spectrum.

Chapter 6, "Multifunctional ZnO Nanoparticle: Based Coatings for Cultural Heritage Preventive Conservation" by Ludmila Otilia Cinteză and Maria Antonia Tănase, describes recent progress in synthesis and characterization of hybrid material with ZnO nanoparticles and their use as functional coatings for various substrates.

Chapter 7, "Deposition of Silver Nanoparticles on Indium Tin Oxide Substrates by Plasma-Assisted Hot-Filament Evaporation" by Abtisam Hasan Hamood Al-Masoodi, Boon Tong Goh, Ahmed H. H. Al-Masoodi, and Wan Haliza Binti Abd Majid, discusses the PAHFE technique for the deposition of Ag nanoparticles on ITO and influences of the experimental parameters on the physical and optical properties. It also examines the electronic structure of the deposited Ag nanoparticles on ITO.
