Pyrochlore Oxide: Structure, Properties, and Potential in Photocatalytic Applications

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Green Chemistry and Sustainable Technology Series
Pyrochlore Oxides: Structure, Properties, and Potential in Photocatalytic Applications
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Preface
	References
Contents
Contributors
1. Structural Type of α-Pyrochlore Oxides
	1.1 General Characteristics and Features of the Crystal Structure
	1.2 Series of α-Pyrochlores with Composition A23+M24+O7
		1.2.1 Series of α-Pyrochlores with Composition A22+M25+O7
		1.2.2 Compounds A2M2O6 with Defect α-Pyrochlore Structure
	References
2. Structural Type of β-Pyrochlore Oxides AM2O6
	2.1 General Characteristics and Features of the Crystal Structure
	2.2 Series of β-Pyrochlores with Composition A+M5+xM6+2–xO6
	2.3 Series of β-Pyrochlores with Composition A+M0.54+M1.56+O6
	2.4 Series of β-Pyrochlores with Composition A+M0.333+M1.676+O6, A+M0.252+M1.756+O6 and CsLi0.2W1.8O6
	References
3. Theoretical Foundations of Photocatalysis
	3.1 General Remarks on Photocatalysis
	3.2 Historical Background of Photocatalysis
	3.3 Fundamentals of Photocatalysis
	3.4 Parameters for Evaluating Photocatalytic Activity
	3.5 Reactive Oxygen Species Formed During Photocatalysis
	3.6 The Most Common Photocatalysts
	3.7 Strategies for Enhancing Photocatalytic Activity
	References
4. Application of Compounds with Pyrochlore Structure in Photocatalysis
	4.1 Photocatalytic Degradation of Organics Substances in the Presence of Pyrochlores
		4.1.1 Effect of Operational Parameters on Photocatalytic Degradation of Organics in the Presence of Complex Oxides
		4.1.2 α-Pyrochlore Oxides with A2M2O7 Composition for Degradation of Organic Pollutants
		4.1.3 Defect α- and β-Pyrochlore Oxides for Degradation of Organic Pollutants
		4.1.4 Mechanism of Photocatalytic Degradation of Organics in the Presence of Pyrochlore Oxides
		4.1.5 A Short Overview
	4.2 Photocatalytic Water Splitting on Pyrochlore Oxides
		4.2.1 Fundamentals of Water Splitting
		4.2.2 α-Pyrochlore Oxides with A2M2O7 Composition for Water Splitting
		4.2.3 Defect α- and β-Pyrochlore Oxides for Water Splitting
		4.2.4 A Short Overview
	4.3 Perspectives of Pyrochlore Oxides for Photocatalytic CO2 Reduction
	References
5. Synthesis of Composites Based on Natural and Synthetic Polymers as Precursors for Medical Materials in the Presence of β-Pyrochlore Oxides
	5.1 Natural Polymers for Composites Synthesis with Synthetic Polymers for the Production of Biomedical Materials
		5.1.1 Collagen as a Component of New Composite Materials
		5.1.2 Polysaccharides as Components of Polymer Composites
	5.2 Promising Initiators for Radical Polymerization and Grafting onto Polymers
		5.2.1 Peroxides and Azo-Initiators
		5.2.2 Redox Systems for Grafting onto Polymers
	5.3 Synthesis of Medical Materials Based on Natural Polymers by Grafting Synthetic Polymers in the Presence of β-Pyrochlore Oxides
		5.3.1 Photocatalytic Radical Polymerization of MMA in the Presence RbTe1.5W0.5O6
		5.3.2 Radical Graft Copolymerization of Alkyl Methacrylates with Fish Collagen in the Presence of the RbTe1.5W0.5O6 Photocatalyst
		5.3.3 A Short Overview
	References
6. Antimicrobial Effect of Nano- and Sub-micron Particles of Metal Oxides with β-Pyrochlore Structure
	6.1 Antimicrobial Activity of Nano- and Sub-micron Particles of Metal Oxides
	6.2 Mechanism of Biocidal Action of Metal Oxide Microparticles
		6.2.1 Mechanism of Action in Dark Conditions
		6.2.2 Mechanism of Action under Light Irradiation (Antimicrobial Effect of Particles as a Result of Photocatalysis)
	6.3 Antifungal Activity of Compounds with β-Pyrochlore Structure
	6.4 Antibacterial Activity of Compounds with β-Pyrochlore Structure
	6.5 Effect of Different Factors on the Antimicrobial Activity of Metal Oxides
	References
7. Methods for Preparation of Pyrochlore Oxides and Their Effect on the Photocatalytic Activity
	7.1 Solid-State Reaction (SSR)
	7.2 Sol–Gel (SG) Method
	7.3 Hydrothermal (HT) Method
	References