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Titanium dioxide is mainly used as a pigment and photocatalyst. It is possible to find it in food, cosmetics, building materials, electric devices, and others. This book contains chapters about application of titanium dioxide in different branches of economy such as the agriculture, the food industry, the medicine, the cosmetics, the water treatment technologies, and the semiconductors.

Titanium dioxide. --- Anatase --- Brookite --- Octahedrite --- Titania (Chemical) --- Titanic acid anhydride --- Titanic oxide --- Titanium oxide --- Titanium white --- Oxides --- Titanium compounds --- Physical Sciences --- Engineering and Technology --- Chemistry --- Inorganic Chemistry --- Solid-State Chemistry

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Semiconductor photocatalysts have attracted a great amount of multidiscipline research due to their high potential for solar-to-chemical-energy conversion applications, ranging from water and air purification to hydrogen and chemical fuel production. This unique diversity of photoinduced applications has spurred major research efforts on the rational design and development of photocatalytic materials with tailored structural, morphological, and optoelectronic properties in order to promote solar-light harvesting, easy photogenerated electron-hole recombination and the concomitant low quantum efficiency. This book presents a collection of original research articles on advanced photocatalytic materials, synthesized by novel fabrication approaches and/or innovative modifications that improve their performance in target photocatalytic applications such as water (cyanobacterial toxins, antibiotics, phenols, and dyes) and air (NOx and volatile organic compounds) pollutant degradation, hydrogen evolution, and hydrogen peroxide production by photoelectrochemical cells.

anatase --- brookite --- C/N-TiO2 --- microcystin-LR --- photodegradation --- visible light --- TiO2 nanomaterials --- Au nanoparticles --- anodization --- photocatalytic degradation of antibiotics --- LC-MS/MS --- TiO2 --- photonic crystals --- graphene oxide nanocolloids --- reduced graphene oxide --- photocatalysis --- photocatalytic materials --- nanocomposites --- sulfate-modified BiVO4 --- methylene blue --- LED visible light --- photodecomposition --- anatase TiO2 nanocrystals --- high-energy facets --- photocatalytic activity --- photovoltaic performance --- photoactive cement --- TiO2/N --- NOx decomposition --- mechanical properties --- plasmonic photocatalysis --- silver-copper oxide --- VOCs remediation --- full-spectrum photoresponse --- carbon-doped titania --- carbon-modified titania --- graphene/titania --- vis-active photocatalyst --- antibacterial properties --- laser pyrolysis --- hydrogen peroxide --- CdS --- CdSe --- photoelectrocatalysis --- photocatalytic fuel cells --- photo fuel cells --- visible light activated titania --- heterojunction photocatalysts --- photonic crystal catalysts --- graphene-based photocatalysts --- water and air purification --- solar fuels

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The quality of water is not only a technological and scientific issue, but a social and economic problem, in both developed and developing countries. Besides local regulations, which differ between regions and need constant upgrades, significant scientific developments are required in both the detection and removal of water contaminants. This Issue focuses on some recent advancements in the photocatalytic removal of organic pollutants, which is one of the aspects of the problem that involves the need of advanced catalysts and implies significant advancements in the field of materials science and chemical engineering.

indigo carmine --- resin --- Dielectric Barrier Discharge --- adsorption --- regeneration --- anatase/brookite biphasic --- nitrogen-doping --- sol-gel method --- visible light photocatalysis --- degradation of dyes --- polyaniline --- titanium dioxide --- copper(II) oxide --- cobalt oxide(II,III) --- photocatalytic fuel cell --- graphitic carbon nitride --- Fe doping --- Z-scheme --- strontium aluminates --- dye photodecomposition --- hydrothermal reaction --- sol–gel method --- phosphorescence --- photocatalytic decomposition of rhodamine B --- MIL-53(Fe) --- Ni/Fe-MOF --- visible light irradiation --- n/a

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This book focuses on recent advances in plasma technology and its application to metals, alloys, and related materials. Surface modifications, material syntheses, cutting and surface coatings are performed using low-pressure plasma or atmospheric-pressure plasma. The contributions of this book include the discussion of a wide scope of plasma technologies applied to materials. Plasma is a versatile tool that can be applied in many types of material processing. New material processing applications of plasmas and new plasma technologies are being developed rapidly. We hope that this book can contribute new knowledge to the plasma material research society.

cathodic plasma electrolysis deposition --- Al2O3 coating --- oxidation --- solution surface tension --- nitrogen plasma --- Ga droplet --- GaN nanodot --- transmission electron microscopy --- wurtzite --- Zinc-blende --- plasma cutting --- cut heat affected zone --- mini-tensile test --- steel plate --- residual stress --- atmospheric pressure plasma jet --- platinum --- tin oxide --- dye-sensitized solar cells --- chloroplatinic acid --- tin chloride --- self-lubricating --- composite coating --- titanium --- plasma electrolytic oxidation (PEO) --- polytetrafluoroethylene (PTFE) --- plasma nitriding --- atmospheric-pressure plasma --- nitrogen dose amount --- hydrogen fraction --- void --- Ti6Al4V lattice structure --- Ag-doped TiO2 anatase --- spark plasma sintering --- selective laser melting --- additive manufacturing --- antibacterial and photoactivity applications --- aluminum --- surface --- plasma --- nitrogen --- postdischarge --- atmospheric pressure --- wettability --- organic-inorganic halide perovskite --- air plasma --- plasma treatment --- optoelectronic properties --- morphology --- n/a

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The semiconductor titanium dioxide (TiO2) has been evolved as a prototypical material to understand the photocatalytic process, and has been demonstrated for various photocatalytic applications such as pollutants degradation, water splitting, heavy metal reduction, CO2 conversion, N2 fixation, bacterial disinfection, etc. Rigorous photocatalytic studies on TiO2 have paved the way to understanding the various chemical processes involved and the physical parameters (optical and electrical) required to design and construct diverse photocatalytic systems. Accordingly, it has been realized that an effective photocatalyst should have ideal band edge potential, narrow band gap energy, reduced charge recombination, enhanced charge separation, improved interfacial charge transfer, surface-rich catalytic sites, etc. As a result, many strategies have been developed to design a variety of photocatalytic systems, which include doping, composite formation, sensitization, co-catalyst loading, etc. Towards highlighting the above-mentioned diversities in TiO2 photocatalysis, there have been many interesting original research works on TiO2, involving material designs for various photocatalytic applications published in this Special Issue. In addition, some excellent review papers have also been published in this Special Issue, focusing on the various TiO2-based photocatalytic systems and their mechanisms and applications.

modified L-H model --- N-TiO2 --- photocatalytic degradation --- benzene --- antibacterial --- copper oxide --- photocatalyst --- titanium dioxide --- thin film --- visible light --- photovoltaic conversion --- interfacial charge-transfer transition --- 7,7,8,8-tetracyanoquinodimethane --- Nb-doped TiO2 --- N-doped graphene quantum dots --- TiO2 --- photocatalytic performance --- pyridinic N --- graphitic N --- solid-phase photocatalytic degradation --- polyvinyl borate --- decahedral-shaped anatase titania particles --- {001} and {101} facets --- facet-selective metal photodeposition --- pH dependence --- zeta potential --- facet-selective reaction --- photocatalysis --- deNOxing --- Titania --- photophysics --- metal oxides --- environment --- 2D materials --- composite --- iron-doped TiO2 --- photocatalytic activity --- low UV irradiation --- hydroxyl radical --- estriol --- W-Mo dopants --- nanoparticles --- non-metal- doped TiO2 --- nitroaromatic compounds --- reduction --- selectivity --- Titanium dioxide --- bismuth molybdate --- lignin --- UV light --- Photo-CREC Water II reactor --- Palladium --- Hydrogen production --- Quantum Yield --- magnetic property --- reusable --- photoreduction --- microporous material --- adsorption --- air purification --- porous glass --- mesocrystals --- synthesis --- modification --- Ru-Ti oxide catalysts --- HCl oxidation --- oxygen species --- Ce incorporation --- active phase-support interactions --- bleached wood support materials --- 3D photocatalyst --- UV transmittance --- floatable --- recyclable --- TiO2C composite --- acid catalyst --- dehydration --- fructose --- 5-Hydroxymethylfurfural --- Microcystis aeruginosa --- microcystin --- controlled periodic illumination --- advanced oxidation process --- hexabromocyclododecane --- environmental management --- advanced oxidation processes --- energy band engineering --- morphology modification --- applications --- Titanium dioxide (TiO2) --- visible-light-sensitive photocatalyst --- N-doped TiO2 --- plasmonic Au NPs --- interfacial surface complex (ISC) --- selective oxidation --- decomposition of VOC --- carbon nitride (C3N4) --- alkoxide --- ligand to metal charge transfer (LMCT) --- hydrogen production --- TiO2-HKUST-1 composites --- solar light --- electron transfer --- graphene quantum dots --- heterojunction --- process optimization --- response surface methodology --- kinetic study --- Advanced oxidation processes (AOPs) --- TiO2 catalyst --- textile wastewater --- oxygen vacancy --- polymeric composites --- photoelectrochemistry --- co-modification --- solar energy conversion --- p-n heterojunction --- g-C3N4 --- charge separation --- semiconductors --- redox reactions --- band gap engineering --- nanostructures --- n/a --- in-situ formation --- anatase nanoparticles --- H-titanate nanotubes --- dual-phase --- low temperature