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The book compiles scientific articles describing advances in nanomaterial synthesis and their application in water remediation. The publications treat diverse problems such as dye degradation, heavy metal ion, as well as radioactive element capture and sequestration. There are 10 original research articles and one review article. The latter proposes graphene/CNT and Prussian blue nanocomposites for radioactive 137-cesium extraction from aqueous media. All reports thoroughly characterize the nanomaterials post-synthesis and describe their catalytic, photocatalytic, or ion exchange activities in contaminated water. The dyes studied in the collection are azo dyes, i.e. methylene blue and orange, rhodamine B, phenolic dyes viz. bromophenol blue, and other dyes with sulfonyl groups. Extraction of radioactive elements, including cationic 137Cs+ and anionic 125I?, is also investigated. The omnipresence of ZnO nanoparticles in everyday products and their effects in wastewater are also evaluated. Layered double hydroxide are capable of capturing Ag ions, which then has a catalytic effect on dye degradation. The nanomaterials considered are varied, viz., graphene, CNT, Prussian blue, nanoporous carbon, layered double hydroxides, magnetite, ferrites, organic powders, polymer membranes, bacteria, and inorganic nanomaterials such as MnO and Ag. The book targets an interdisciplinary readership.

LDHs --- magnetic photocatalyst --- n/a --- bioremediation --- membrane --- BiOCl --- BiVO4 --- degradation --- agglomeration --- solvent vapor annealing --- nanoporous carbon --- nanocomposite --- Prussian blue --- stability --- silver nanomaterials --- adsorption --- wastewater --- desalination --- ZnO nanoparticles --- film --- magnetic performance --- metal-organic frameworks --- 137Cs+ selectivity --- nanomixtures --- water remediation --- photocatalytic activity --- adsorption properties --- magnetic extraction --- RGO --- structural regularity --- photocatalytic mechanism --- wastewater treatment --- 137-Cesium --- photocatalyst --- magnetic nanoparticles --- graphene --- radioactive iodine --- carbon nanotubes --- doping modification --- electrospinning --- radioactive contamination --- Mn–Zn ferrite --- mixed wastewater --- manganese oxide --- host–guest interaction --- bromophenol blue --- Dy3+ --- organic pollutants --- dye --- beta-cyclodextrin polymer --- polydopamine --- interaction --- dye removal --- adsorption models --- RhB photodegradation --- hydrothermal method --- supercapacitor --- Mn-Zn ferrite --- host-guest interaction

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Layered double hydroxides (LDHs), also known as two-dimensional anionic clays, as well as the derived materials, including hybrids, nanocomposites, mixed oxides, and supported metals, have been highlighted as outstanding heterogeneous catalysts with unlimited applications in various processes involving both acid–base (addition, alkylation, acylation, decarboxylation, etc.) and redox (oxidation, reduction, dehydrogenation, etc.) mechanisms. This is mainly due to their flexibility in chemical composition, allowing the fine tuning of the nature of the active sites and the control of the balance between them. Additionally, LDHs display a large anion exchange capacity and the possibility to modify their interlayer space, constraining the size and type of reactants entering in the interlamellar space. Furthermore, their easy and economic synthesis, with high levels of purity and efficiency, at both the laboratory and industrial scales, make LDHs and their derived materials excellent solid catalysts. This Special Issue collects original research papers, reviews, and commentaries focused on the catalytic applications of these remarkable materials.

layered double hydroxides (LDH) --- polyoxometalates (POM) --- catalytic materials --- Michael addition --- cobalt-based LDHs --- ultrasonic irradiation --- synergistic effect --- photocatalysis --- nitrophenol degradation --- Zn,Al-hydrotalcite --- ZnO dispersed on alumina --- reusability --- layered double hydroxide --- LDH --- catalytic oxidation --- ethanol --- toluene --- VOC --- photocatalysts --- Cu electrodes --- diazo dyes --- electrocatalysts --- layer double hydroxides --- photoelectrochemical degradation --- hydrotalcites --- mixed oxides --- aldol condensation --- basic catalysts --- exfoliation --- nanosheets --- oxidation --- layered double hydroxides --- base catalysts --- epoxide --- formaldehyde --- oxidation removal --- BiOCl --- manganese --- biodiesel --- transesterification --- hydrothermal --- nickel --- aluminum --- solid base --- structured catalyst --- ethanol steam reforming --- aluminum lathe waste strips --- Ni nanoparticle --- mechano-chemical/co-precipitation synthesis --- organic alkalis (tetramethylammonium hydroxide) --- memory effect --- Claisen-Schmidt condensation --- self-cyclohexanone condensation --- n/a

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Ferroic materials, including ferroelectric, piezoelectric, magnetic, and multiferroic materials, are receiving great scientific attention due to their rich physical properties. They have shown their great advantages in diverse fields of application, such as information storage, sensor/actuator/transducers, energy harvesters/storage, and even environmental pollution control. At present, ferroic nanostructures have been widely acknowledged to advance and improve currently existing electronic devices as well as to develop future ones. This Special Issue covers the characterization of crystal and microstructure, the design and tailoring of ferro/piezo/dielectric, magnetic, and multiferroic properties, and the presentation of related applications. These papers present various kinds of nanomaterials, such as ferroelectric/piezoelectric thin films, dielectric storage thin film, dielectric gate layer, and magnonic metamaterials. These nanomaterials are expected to have applications in ferroelectric non-volatile memory, ferroelectric tunneling junction memory, energy-storage pulsed-power capacitors, metal oxide semiconductor field-effect-transistor devices, humidity sensors, environmental pollutant remediation, and spin-wave devices. The purpose of this Special Issue is to communicate the recent developments in research on nanoscale ferroic materials.

Research & information: general --- Physics --- PMN-PT thin films --- preferred orientation --- ferroelectric property --- dielectric property --- flexible --- film capacitor --- Ba0.5Sr0.5TiO3/0.4BiFeO3-0.6SrTiO3 --- energy storage properties --- MOS capacitors --- Sm2O3 high-k gate dielectric --- atomic layer deposition --- conduction mechanisms --- interface state density --- BSFM --- phase transition --- aging --- electrical properties --- BiOCl/NaNbO3 --- heterojunction --- piezocatalysis --- photocatalysis --- degradation --- humidity sensing --- impedance-type sensors --- organometallic halide perovskite --- HZO --- PEALD --- ferroelectric memory --- deposition temperature --- film density --- remanent polarization --- fatigue endurance --- CBTi-BFO --- fine grain --- electric breakdown strength --- recoverable energy storage --- spin waves --- Dzyaloshinskii–Moriya interaction --- ferromagnetism --- spintronics --- two-dimensional materials --- ferroelectric properties --- scanning probe microscope --- negative piezoelectricity --- phase segregation --- multiferroic materials --- anisotropy --- DyFeO3 --- magnetoelectric coupling --- pulsed high magnetic field --- DM interaction --- crystalline YFeO3 --- magnetic properties --- enhanced weak ferromagnetism --- exchange interactions