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Since the first works introducing the aluminum intercalated clay family in the early 1970s, interest in the synthesis of Pillared InterLayered Clays (PILC) has increased tremendously, especially research into their properties and energetic and environmental applications. After our comprehensive reviews and book on the synthesis and catalytic applications of these materials, new references have appeared in the literature and the interest in this field is continuously increasing. The aim of this Special Issue is to collect the recent advances developed considering this family of solids.

Technology: general issues --- clays --- Al-PILC --- pillared clays --- scale up --- pillaring solution --- Keggin ion --- reutilization --- Keggin polycation --- concentrated media --- microwave radiation --- pillared montmorillonite --- AlNi-PILC --- Pd-Ce --- catalytic combustion --- benzene --- TPD/TPSR --- ZnO-TiO2/delaminated montmorillonite --- heterostructures --- Ag-coating --- solar photocatalytic activity --- water purification --- cadmium --- chitosan --- modification --- 13X molecular sieve --- removal --- dye remediation --- adsorption --- azo dye --- wastewater --- pillared porous phosphate heterostructures --- isotherm --- sericite --- thermal modification --- acid activation --- sodium modification --- montmorillonite/hydrotalcite composite --- montmorillonite/titania composite --- organoclay --- inverse micelle --- Mn-Al mixed oxide --- combustion catalysts --- ciprofloxacin --- smectite --- pillared clay --- keggin-like mixed Al/Fe polyoxocation --- mineralogical composition --- catalytic wet peroxide oxidation --- mesosilica --- methyl orange --- palygorskite

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The conversion and storage of renewable energy sources is key to the transition from a fossil-fuel-based economy to a low-carbon society. Many new game-changing materials have already impacted our lives and contributed to a reduction in carbon dioxide emissions, such as high-efficiency photovoltaic cells, blue light-emitting diodes, and cathodes for Li-ion batteries. However, new breakthroughs in materials science and technology are required to boost the clean energy transition. All success stories in materials science are built upon a tailored control of the interconnected processes that take place at the nanoscale, such as charge excitation, charge transport and recombination, ionic diffusion, intercalation, and the interfacial transfer of matter and charge. Nanostructured materials, thanks to their ultra-small building blocks and the high interface-to-volume ratio, offer a rich toolbox to scientists that aspire to improve the energy conversion efficiency or the power and energy density of a material. Furthermore, new phenomena arise in nanoparticles, such as surface plasmon resonance, superparamegntism, and exciton confinement. The ten articles published in this Special Issue showcase the different applications of nanomaterials in the field of energy storage and conversion, including electrodes for Li-ion batteries and beyond, photovoltaic materials, pyroelectric energy harvesting, and (photo)catalytic processes.

nanoparticle --- nanoalloy --- catalyst --- CO2 reduction --- hydrocarbon --- synthetic fuel --- iron --- cobalt --- perovskite solar cell --- hole transport layer --- CuCrO2 nanoparticles --- thermal stability --- light stability --- aluminum ion batteries --- reduced graphene oxide --- tin dioxide --- 3D electrode materials --- mechanical properties --- TiO2 --- azo dye --- wastewater treatment --- photocatalysis --- sodium formate --- dry etching --- black silicon --- photovoltaics --- plasmonics --- heterogeneous catalysis --- nanoparticles --- single molecule localization --- super-resolution microscopy --- surface-enhanced Raman spectroscopy --- Li-ion batteries --- anodes --- intermetallics --- silicon --- composites --- nanomaterials --- coating --- mechanochemistry --- zinc sulfide --- wurtzite --- co-precipitation synthesis --- solvent recycling --- green synthesis --- scaling up --- pilot plant --- chalcopyrite compounds --- nanocrystals --- hydrothermal --- spin coating --- EIS --- conductivity --- lithium-ion batteries --- SnO2 --- nanoarray --- anode --- high-rate --- n/a

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The conversion and storage of renewable energy sources is key to the transition from a fossil-fuel-based economy to a low-carbon society. Many new game-changing materials have already impacted our lives and contributed to a reduction in carbon dioxide emissions, such as high-efficiency photovoltaic cells, blue light-emitting diodes, and cathodes for Li-ion batteries. However, new breakthroughs in materials science and technology are required to boost the clean energy transition. All success stories in materials science are built upon a tailored control of the interconnected processes that take place at the nanoscale, such as charge excitation, charge transport and recombination, ionic diffusion, intercalation, and the interfacial transfer of matter and charge. Nanostructured materials, thanks to their ultra-small building blocks and the high interface-to-volume ratio, offer a rich toolbox to scientists that aspire to improve the energy conversion efficiency or the power and energy density of a material. Furthermore, new phenomena arise in nanoparticles, such as surface plasmon resonance, superparamegntism, and exciton confinement. The ten articles published in this Special Issue showcase the different applications of nanomaterials in the field of energy storage and conversion, including electrodes for Li-ion batteries and beyond, photovoltaic materials, pyroelectric energy harvesting, and (photo)catalytic processes.

Research & information: general --- Physics --- nanoparticle --- nanoalloy --- catalyst --- CO2 reduction --- hydrocarbon --- synthetic fuel --- iron --- cobalt --- perovskite solar cell --- hole transport layer --- CuCrO2 nanoparticles --- thermal stability --- light stability --- aluminum ion batteries --- reduced graphene oxide --- tin dioxide --- 3D electrode materials --- mechanical properties --- TiO2 --- azo dye --- wastewater treatment --- photocatalysis --- sodium formate --- dry etching --- black silicon --- photovoltaics --- plasmonics --- heterogeneous catalysis --- nanoparticles --- single molecule localization --- super-resolution microscopy --- surface-enhanced Raman spectroscopy --- Li-ion batteries --- anodes --- intermetallics --- silicon --- composites --- nanomaterials --- coating --- mechanochemistry --- zinc sulfide --- wurtzite --- co-precipitation synthesis --- solvent recycling --- green synthesis --- scaling up --- pilot plant --- chalcopyrite compounds --- nanocrystals --- hydrothermal --- spin coating --- EIS --- conductivity --- lithium-ion batteries --- SnO2 --- nanoarray --- anode --- high-rate

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This book emphasizes that soil productivity is considered an important factor for the success of agricultural production. The microbial community’s composition and the diversity of agricultural soils primarily depend on management practices. Exogenous nutritional inputs are inevitable processes in crop production, which can change the structure of soil bacterial communities. The combined application of compost and inorganic fertilizers might be a good way to keep up with agricultural productivity while maintaining the environmental balance. Bacterial communities are also known to differ according to the plant genotypes and hosts. Plant genotypic differences do not always lead to significant differences in microbiomes in the rhizosphere. It was concluded that imaginative research should address the simulation of the soil microenvironment, so as to understand the factors that regulate microbial activities in micro-niches.

Research & information: general --- halophyte --- arbuscular mycorrhizal fungi --- plant growth promoting rhizobacteria --- morphological characteristics --- photosynthesis --- soil enzymes --- microbial interactions --- rhizosphere --- DNA --- proteins --- microbial diversity --- microbial activity --- acidic soil improvement --- liming --- microbial community --- plant residue incorporation --- soil enzyme activity --- subtropical orchard soil --- phosphorus-enriched rhizosphere soils --- phosphate --- phytoremediation --- bacterial communities --- high-throughput sequencing --- Orchidaceae --- soil --- bacteria --- fungi --- microbiome --- heavy metal --- NGS --- azo dye --- textile --- wastewater --- diversity --- xenobiotics --- pollutant --- Nitrogen deposition --- soil biodiversity --- urban --- 16S rRNA --- wild-simulated ginseng --- Panax ginseng C.A. Meyer --- soil bacterial community --- soil property --- correlation analysis --- agricultural practices --- cultivar --- grafting --- interaction rootstock scion --- plant performance --- rhizosphere bacteria --- taxonomic indicators --- viticulture --- long-term fertilization --- next-generation sequencing --- bacterial diversity --- plant growth --- soil microbial community --- environmental factors --- soil contamination --- culture-independent analysis

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This reprint focuses on new trends in photo-electrocatalysis, specifically addressed to the remediation of wastewater and energy production. The remediation of wastewater, up to a level that is acceptable for discharge into receiving waterbodies, involves an ever-growing demand of energy, so effective and low-energy treatment processes are highly desirable. Among the other treatments, photo- and photo-electrochemical treatment processes may be considered as advanced oxidation processes (AOP), which are based on the generation of OH radicals, strong oxidizing agents able to indiscriminately degrade even the most persistent organic compounds. Photocatalysis and photo-electrocatalysis can be considered as effective methods for organic degradation, especially when the semiconductor is active in the range of visible light. Several results are presented on new morphologies and structures, which allow more photoactive, visibly responsive, and stable materials, as well as studies on combined processes in which photo- or photo-electrochemistry contribute to an increase in the sustainability of the whole process, lowering costs and achieving the most valuable final products. In view of the circular economy concept, microbial fuel cell systems are also considered as possible way to recover energy from organic pollutants contained in wastewater.

composite --- polymethylmethacrylate --- photocatalytic oxidation --- titanium dioxide --- tetracycline --- ethanol --- photocatalysis --- silver(II) oxide --- mechanical mixture --- in situ deposition --- hydrogen evolution --- Anodic oxidation --- diamond electrodes --- UV irradiation --- ultrasounds --- amoxicillin --- ampicillin --- Composite catalysts --- synergy effect --- solar energy --- wastewater remediation --- photoelectrocatalysis --- TiO2 nanostructures --- Au nanoparticles --- water splitting --- bisphenol A oxidation --- ZnFe2O4 --- degree of inversion --- cation distribution --- photoelectrochemical activity --- porous nickel --- selective corrosion --- hydrogen evolution reaction --- metal sulfides --- H2 production --- photocatalyst --- facet effect --- light trapping --- crystal size --- non-precious metal catalysts --- Cu–B alloy --- microbial fuel cell --- cathode --- environmental engineering --- oxygen electrode --- renewable energy sources --- graphitic carbon nitride --- H2 generation --- Ni–Co catalyst --- electricity production --- advanced oxidation processes --- azo dye --- sustainable resources --- niobium --- water reuse --- water treatment --- AOPs --- zinc oxide --- nanoclusters --- UVA --- visible light --- photocatalytic reduction --- CO2 --- TiO2 photocatalysts --- surface modification --- solar fuel --- magnetron sputtering --- titanium dioxide (TiO2) film --- photocatalytic activity --- metal and non-metal doping --- optical properties --- n/a --- Cu-B alloy --- Ni-Co catalyst