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Heterogeneous catalysis played, plays, and will continue to play, a major key role in industrial processes for large-scale synthesis of commodity chemicals of global importance, and in catalytic systems that possess a critical role in energy generation and environmental protection approaches. As a result of the ongoing progress in materials science, nanotechnology, and characterizations, great advances have been achieved in heterogeneous catalysis by nanomaterials. Efficient approaches and advanced methods for the design of nano-structured composite materials (up to atomic level), subject to specific nano-morphologies with enhanced metal–metal and metal–support interactions favorable for catalysis (that enable fine-tuning of the critical properties of the designed catalysts), provide optimized catalysts with outstanding performances in numerous eco-friendly and cost-effective applications. Accordingly, great progress has been achieved involving, for example, emissions control, waste treatment, photocatalytic, bio-refinery, CO2 utilization, and fuel cells applications, as well as hydrocarbon processing for H2, added-value chemicals, and liquid fuels production. The themed Special Issue has succeeded in collecting 10 high-quality contributions that cover recent research progress in the field for a variety of applications (e.g., environment, energy, added-value chemicals/organics synthesis, and bio-transformation) declaring the prospect and importance of nanomaterials in all the directions of heterogeneous catalysis.

n/a --- B-doped --- polyoxymethylene dimethyl ethers --- porous carbon --- self-catalytic pyrolysis --- visible light --- heterostructure --- oxygen vacancies --- TiO2 nanotube --- thiadiazoles --- ethylidenethiosemicarbazides --- adsorption --- dimethoxymethane --- nano-biocatalyst --- heterogeneous catalysis --- bio-catalysis --- H2 evolution --- carbon cuboids --- trioxymethylene --- ?-glucosidase --- metal-organic frameworks --- Brønsted acid sites --- hybrid --- MXene --- oleuropein --- Rhodamine B --- antibiotics --- maleic anhydride --- oxygen evolution reaction --- photocatalyst --- 2-methyl-3-butennitrile --- halide perovskite --- zeolites --- electrospinning --- Rh --- Ti3C2Tx --- heterostructures --- hydroxytyrosol --- metal–organic frameworks --- photocatalysis --- Ni/ZrO2 --- the maximum included sphere --- functionalized olefin --- selective hydrogenation --- thiazoles --- oxidation --- visible-light --- red P --- chitosan-MgO nanocomposite --- ZnO --- g-C3N4/TiO2 --- hydroformylation --- steric constraint

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The advent of graphene and, more recently, two-dimensional materials has opened new perspectives in electronics, optoelectronics, energy harvesting, and sensing applications. This book, based on a Special Issue published in Nanomaterials – MDPI covers experimental, simulation, and theoretical research on 2D materials and their van der Waals heterojunctions. The emphasis is the physical properties and the applications of 2D materials in state-of-the-art sensors and electronic or optoelectronic devices.

ZnO/WS2 --- ZnO/WSe2 --- photocatalysis --- hybrid density functional --- copper vanadate --- photoanode --- water splitting --- graphene oxide --- Stone–Wales defected graphene --- half-metallocene --- adsorption energy --- density of states --- and magnetic property --- palladium selenide monolayer --- physical properties --- light-harvesting performance --- type-II heterostructure --- first principles calculations --- 2D materials --- field effect transistors --- PMMA --- tungsten diselenide --- graphene/MoS2 heterostructure --- optical properties --- electronic structure --- Layer-dependent --- Indium Selenide --- density functional theory --- work function --- MXene --- Ti3C2Tx --- transition metal dichalcogenides --- surface plasmon resonance --- sensitivity --- CdS/g-C3N4 --- strain-tunable --- WS2 --- large-area --- CVD --- fluorescence emission --- Raman mapping --- mechanical behaviors --- electronic properties --- photocatalytic properties --- graphene --- Schottky barrier --- diode --- photodetector --- heterojunction --- MOS (Metal Oxide Semiconductor) capacitor --- responsivity --- transition metal dichalcogenide --- van der Waals heterostructure --- photodetection --- photovoltaics