Preface

Silver nanoparticles (AgNPs) have become one of the widely researched nanostructures in recent years because of their unique optical, physical, and chemical properties. Due to their structure, shape, and size, AgNPs can be modified to produce nanoparticles with exciting and unique properties. Materials based on AgNPs have a variety of interesting, challenging, and promising features suitable for various applications in biosensing, diagnostics, imaging, catalysis, and drug delivery. The size-dependent unique plasmonic characteristics of AgNPs, in particular, make them more attractive for biological and diagnostic applications.

This book provides a comprehensive overview of the significant applications and various methods for sustainable and green high-quality synthesis of AgNPs, and theoretical insight on the plasmonic properties of Ag composite films.

This book is divided into four sections. The first section explains the various methods for producing and characterizing AgNPs and their composites with dielectric and electrical properties. This section also covers a new class of multifunctional nanomaterials based on AgNP plasmonic activity and Fe3O4 superparamagnetic nanoparticles.

The second section delves into the biomedical applications of AgNPs in a detailed and systematic manner. This section discusses the photocatalytic activity of AgNPs, their potential use in the degradation of organic pollutants under ultraviolet and visible/solar radiation, as well as current strategies for developing AgNPs, functionalized wound dressings, and their potential outcomes, benefits, and future wound management challenges.

The third section discusses the surface-enhanced Raman spectroscopy (SERS) and photoelectrochemical (PEC) uses of AgNPs. It also discusses the production and catalytic characteristics of AgNPs stabilized in a hydrogel. This section gives an overview of the characteristics and conditions necessary to synthesize hydrogel-stabilized AgNPs. This section also looks into metal-assisted wet chemical etching of semiconductors (silicon) and semiconductor nanostructuresinduced solar water splitting to obtain the best solar-to-hydrogen conversion efficiency.

The fourth and last section examines the different nanotechnology components and their relevance in today's environmental and human health fields.

The editors appreciate the authors' collaboration and contributions and those of the academic editorial board. We also thank IntechOpen, particularly Author Service

**II**

**Chapter 7 107**

**Chapter 8 129**

**Chapter 9 147**

Silver Nanostructures for SERS and Photoelectrochemical Applications **169**

**Chapter 10 171**

**Chapter 11 191**

**Chapter 12 205**

**Chapter 13 217**

Health Concerns **237**

**Chapter 14 239**

Silver Nanoparticles - Preparation Methods and Anti-Bacterial/Viral

Silver Nanoparticles Impregnated Wound Dressings: Recent Progress

Silver Nanoparticles for Photocatalysis and Biomedical Applications

Theoretical and Experimental Study on the Functionalization Effect on the SERS Enhancement Factor of SiO2-Ag Composite Films *by Paulina De León Portilla, Ana Lilia González Ronquillo* 

Silicon-Silver Dendritic Nanostructures Enabled Photoelectrochemical

Synthesis and Catalytic Activity Studies of Silver Nanoparticles Stabilized

*by Ainil Hawa Jasni, Azirah Akbar Ali, Suresh Sagadevan and Zaharah Wahid*

*by Lyubomir Lazov, Risham Singh Ghalot and Edmunds Teirumnieks*

*by Atamjit Singh, Kirandeep Kaur, Komalpreet Kaur, Jaijeet Singh,* 

*Nitish Kumar, Neena Bedi and Preet Mohinder Singh Bedi*

*by William Leonardo da Silva, Daniel Moro Druzian, Leandro Rodrigues Oviedo, Pâmela Cristine Ladwig Muraro* 

Solar Water Splitting for Energy Applications

Silver Nanoparticles in Various New Applications

*by Guillermo Foladori and Noela Invernizzi*

AgNano, the Construction of Occupational Health Standards:

*by Uday Dadwal and Rajendra Singh*

Remedy Impacts against COVID 19

and Future Challenges

*and Vinícius Rodrigues Oviedo*

*and Enrique Sánchez Mora*

in Polymeric Hydro Gel *by Jaya T. Varkey*

**Section 4**

A Status Update

**Section 3**

Manager Ms. Dolores Kuzelj and Commissioning Editor Ms. Anja Filipovic. We also want to express our gratitude to IntechOpen for allowing us to edit this fascinating book project.

> **Samir Kumar** Kyoto University, Kyoto, Japan

> > **1**

Section 1

Synthesis and

Characterization of Silver

Nanostructures

**Prabhat Kumar** Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic

> **Chandra Shakher Pathak** Ben-Gurion University of the Negev, Israel

Section 1
