Fundamentals And Applications Of Nanostructures Perovskite Oxide

Description

'The book consists of six chapters and the contents of each chapter are as follows: the first chapter gives an overview of nanomaterials and perovskite oxide, the importance of morphology-dependent properties, and its application. A brief review of perovskite LaFeO3 nanostructures with a focus on the chemical and physical method of synthesis, properties, and its applications has been presented. The second chapter describes in detail the preparation techniques for the different nanostructures and characterization tools employed. The third chapter explains the preparation and characterization of different morphologies of LaFeO3 nanostructures such as nanocubes, nanorods, nanospheres, dendrites, flower-like nanostructures, microspheres and nanospheres prepared by the facile and environment-friendly wet chemical method. Also, a systematic investigation of growth mechanism, structural, compositional, and thermal analysis has been discussed. The fourth chapter deals with the physical properties such as surface area, optical, magnetic, and electrical properties of different morphologies of LaFeO3 nanostructures. It is worthy to note that the prepared morphologies of LaFeO3 nanostructures exhibit higher photocatalytic activity than Degussa P25 for the degradation of organic pollutant RhB under visible light irradiation and the LaFeO3 nanostructures modified electrode-based dopamine biosensors have good sensitivity, selectivity, stability and low detection limit as discussed in the fifth chapter. Finally, sixth chapter gives the summary and conclusion of all the investigated results.' Read more

Table of Contents

Acknowledgement v Preface vii Acronyms and Abbreviations xiii 1. Nanomaterials and Perovskite Oxide: An Overview 1 1.1 Introduction to Nanoscience and Technology 1.2 Importance of Controlled Size and Shape of Nanomaterials 1.3 Nanostructured Perovskite Pxide 1.4 Crystal Structure, Magnetic, Electrical and Optical Properties of LaFeO3 1.5 Review of Literature 1.5.1 Chemical Synthesis of LaFeO3 Nanostructure 1.5.2 Physical Preparation of LaFeO3 Nanostructures 1.5.3 Photocatalytic Degradation of LaFeO3 Nanostructures 1.5.4 Biosensing Nehaviour of LaFeO3 Nanostructures 1.6 Motivation for this Book 1.7 Overview of this Book References 2. Experimental and Characterization Techniques 17 2.1 Introduction viii 2.2 Chemical Preparation Technique - Hydrothermal Process 2.2.1 Introduction 2.2.2 Hydrothermal Processing Parameters 2.2.3 Hydrothermal Apparatus 2.2.4 Advantages of the Hydrothermal Synthesis 2.3 Characterization Techniques 2.3.1 Structural Analysis - XRD, Raman and FTIR Spectroscopy 2.3.2 Compositional Analysis 2.3.3 Thermal Analysis 2.3.4 Morphological Analysis 2.3.5 Specific Surface Area Analysis 2.3.6 Optical Properties 2.3.7 Magnetic Properties 2.3.8 Electrical Properties 2.4 Conclusion References 3. Controlled Synthesis and Growth Condition of Different Morphologies of LaFeO3 Nanostructures 29 3.1 Introduction 3.2 Experimental Procedure 3.2.1 Materials 3.2.2 Morphological Dependent Synthesis of LaFeO3 Nanostructures 3.2.3 Characterization and Property Measurements 3.3 Results and Discussion 3.3.1 Morphological Analysis of different LaFeO3 Nanostructures 3.3.2 Structural Analysis (XRD, Raman and FT-IR) of different LaFeO3 Nanostructures 3.3.3 Compositional Analysis of different LaFeO3 Nanostructures 3.3.4 Thermal Analysis of different LaFeO3 Nanostructures 3.3.5 Effect of Surfactant Concentration and Growth Parameters of different LaFeO3 Nanostructures 3.6 Conclusion References ix 4. Morphology Dependent Physical Properties of LaFeO3 Nanostructures 67 4.1 Introduction 4.2 Surface Properties of LaFeO3 Nanostructures 4.3 Optical Properties of different LaFeO3 Nanostructures 4.4 Magnetic Properties of LaFeO3 Nanostructures 4.4.1 Magnetic Materials 4.4.2 M-H Hysterias Loop 4.4.3 Shape of Hysteresis Loop 4.4.4 Type of Magnetic Domain 4.4.5 Magnetic Properties of different Morphologies LaFeO3 Nanostructures 4.5 Electrical Properties of different LaFeO3 Nanostructures 4.5.1 Introduction 4.5.2 Experimental Procedure 4.5.3 Results and Discussion 4.5.4 Dielectric Behaviour 4.5 Conclusion References 5. Morphology Dependent LaFeO3 Nanostructures for Photocatalytic and Biosensing Application 99 PART- I 5.1 Morphology Dependent Photodegradation Study of LaFeO3 Nanostructures for Rhodamine B under Visible Light 5.1.1 Introduction 5.1.2 Fundamentals of Photocatalysis 5.1.3 Steps Involved in the Heterogeneous Catalysis Process 5.1.4 Perovskite Oxide Photocatalytic Materials 5.1.5 Reaction Mechanism of Photocatalytic Reactive RhB 5.1.6 LaFeO3 as Visible Light Photocatalyst 5.1.7 Measurement of Photocatalytic Activity 5.1.8 Results and Discussion 5.1.9 Conclusion x PART- II 5.2 Electrocatalytic Performance of different Morphologies of LaFeO3 Nanostructures 5.2.1 Introduction 5.2.2 Modification of Electrode Surfaces with Nanomaterials 5.2.3 Electroanalytical Techniques 5.2.4 Cyclic Voltammetry (CV) and Linear Sweep Voltammetry (LSV) 5.2.5 Amperometric 5.2.6 LaFeO3 Electrocatalysts for Dopamine Biosensing 5.2.7 Experimental Procedure 5.2.8 Results and Discussion 5.2.9 Conclusion References 6. Summary and Conclusion 129 Index 133 Read more

About the Author/Editor

Dr. S. Thirumalairajan, presently working in the most prestigious DBT-Ramalingaswami Re-entry Faculty Fellow scheme (RRF), India in the Centre for Agricultural Nanotechnology (CANT), Coimbatore.ÂHe receivedÂa doctoral degree in Nanoscience and Technology - Physics (Interdisciplinary) from Bharathiar University, India. He is an expert in the fields of shape-dependent functional nanostructures thin film and powders for chemicals, biosensors, food Safety, and agricultural science applications. He has received two externally funded projects with a total cost of ~ Rs. 2 Crores to address issues for food safety applications. He has visited and worked as a senior postdoctoral fellow, and guest scientist in various countries like Brazil, USA, France, South Korea, Indonesia, and Taiwan, for the past nine years and the outcome of novel research resulted in India patent (4), articles in high impact international journals (34, citation ~1350, h-Index:24), national journals (2), Research book (3), book chapters (4), conferences oral/poster presentation (25), and received 10 research awards and distinctions for his credentials. He is a member of various scientific bodies in the national and international community. Dr. K. Girija is an Assistant Professor of Physics, at Dr. N.G.P. Arts and Science College, Coimbatore. She completed doctor's degree in Physics - Nanoscience and Technology from the Department of Nanoscience and Technology, Bharathiar University, India. Her research also addresses the fabrication and evaluation of nanomaterials for use in multifunctional applications. Dr. K. Girija has received recognition as a Post-Doctoral Fellow from FAPSEP, Brazil, Senior Research Fellow, CSIR, Government of India and Junior Research Fellowship from DRDO - BU CLS, Coimbatore. She has published 24 articles, 2 patents, 3 books, 8 book chapters, and guides post graduate and Ph.D. scholars. She is a member of the Materials Research Society, Fellow of Asian Research Association, Electron Microscope Society and Indian Society for Technical Education. Read more