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Multifunctional nano-heterogeneous Ni(OH)2/NiFe catalysts on silicon photoanode toward efficient water and urea oxidation
2022 / Applied Catalysis B: EnvironmentalExploiting inexhaustible free energy from the sun to produce clean and sustainable fuels is an attractive route toward the heavily polluted earth and energy shortage. Photoelectrochemical cell is strategic energy device because the generated fuels can be stored and used on-demand. Herein, we present the fabrication of Si photoelectrodes with efficient charge separa...
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Universal Bifacial Stamping Approach Enabling ReverseGraded Ruddlesden-Popper 2D Perovskite Solar Cells
2022 / Nano Micro SmallQuasi 2D perovskite solar cells (PSCs) are promising light absorbers that overcome the inherent instabilities of 3D perovskites. High-performance and stable 2D PSCs require careful control over the crystallographic orientation and phase distribution. This study introduces a simple and universal bifacial stamping method to obtain highly oriented perovskite crystals ...
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Hydrogel protection strategy to stabilize water-splitting photoelectrodes
2022 / Nature EnergyPhotoelectrochemical water splitting is an attractive solar-to-hydrogen pathway. However, the lifetime of photoelectrochemical devices is hampered by severe photocorrosion of semiconductors and instability of co-catalysts. Here we report a strategy for stabilizing photoelectrochemical devices that use a polyacrylamide hydrogel as a highly permeable and transparent ...
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Dispersive solid phase microextraction based on magnesium oxide nanoparticles for preconcentration of auramine O and methylene blue from water samples
2022 / Scientific ReportsIn this study, we investigated the process of preconcentrate and determine trace amounts of Auramine O (AO) and methylene blue (MB) dyes in environmental water samples. For this purpose, the ultrasound-assisted dispersive-magnetic nanocomposites-solid-phase microextraction (UA-DMNSPME) method was performed to extract AO and MB from aqueous samples by applying mag...
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Heavy metal and organic dye removal via a hybrid porous hexagonal boron nitride-based magnetic aerogel
2022 / npj Clean WaterNumerous adsorbents have been introduced to efficiently remove heavy metals and organic dyes from environmental water samples. However, magnetic a porous network aerogels are rarely developed to capture inorganic and organic pollutants from aqueous. We herein fabricated hexagonal boron nitride nanosheets (h-BNNSs)-based on magnetic hybrid aerogels (MHAs) as a light...
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Nanomorphology dependence of the environmental stability of organic solar cells
2022 / NPG Asia MaterialsPrevious studies have reported contradictory effects of small-molecule acceptors on the environmental stability of polymer:small-molecule blends, with one showing that a small-molecule acceptor stabilizes and another showing that it destabilizes the polymer donor. In this work, to investigate the origin of these contradictory results, the effects of the nanomorphol...
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Heavy metal and organic dye removal via a hybrid porous hexagonal boron nitride-based magnetic aerogel
2022 / npj Clean WaterNumerous adsorbents have been introduced to efficiently remove heavy metals and organic dyes from environmental water samples. However, magnetic a porous network aerogels are rarely developed to capture inorganic and organic pollutants from aqueous. We herein fabricated hexagonal boron nitride nanosheets (h-BNNSs)-based on magnetic hybrid aerogels (MHAs) as a light...
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Trapping and detecting nanoplastics by MXene-derived oxide microrobots
2022 / Nature CommunicationsNanoplastic pollution, the final product of plastic waste fragmentation in the environment, represents an increasing concern for the scientific community due to the easier diffusion and higher hazard associated with their small sizes. Therefore, there is a pressing demand for effective strategies to quantify and remove nanoplastics in wastewater. This work presen...
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Preliminary Study for the Evaluation of Basil Essential Oil in the Preservation of Ficus sycomorus Wood
2022 / Advanced Research in Conservation ScienceEssential oils are used for multiple purposes in different fields; and recently they became vital in the conservation field. Basil oil, one of many essential oils, is known for its fungicidal activity against fungi, which attacks organic materials, such as wood. Throughout the ages sycamore fig wood, which is native in Egypt, was commonly used in archaeological art...
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Fouling behavior of wavy-patterned pore-filling membranes in reverse electrodialysis under natural seawater and sewage effluents
2022 / npj Clean WaterReverse electrodialysis (RED) generates electricity from a mixture of seawater and river water. Herein, patterned membranes consisting of ultra-thin pore-filling membranes (16-μm thick) were used to determine whether the RED system operates steadily when using natural underground seawater and sewage effluent and if the membranes become polluted by various foulan...
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Antifungal Norditerpene Oidiolactones from the Fungus Oidiodendron truncatum, a Potential Biocontrol Agent for White-Nose Syndrome in Bats
2020 / Journal of Natural ProductsWhite-nose syndrome (WNS) is a devastating disease of hibernating bats caused by the fungus Pseudogymnoascus destructans. We obtained 383 fungal and bacterial isolates from the Soudan Iron Mine, an important bat hibernaculum in Minnesota, then screened this library for antifungal activity to develop biological control treatments for WNS. An extract from the fungus ...
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Preparative Isolation of Piceatannol Derivatives from Passion Fruit (Passiflora edulis) Seeds by High-Speed Countercurrent Chromatography Combined with High-Performance Liquid Chromatography and Scree
2020 / Journal of Agriculture and Food ChemistryPassiflora edulis Sims (passion fruit) seeds are often discarded as byproducts during juice processing. In fact, the seeds are of considerable commercial value in the food and cosmetics industry because of their rich polyphenols, especially piceatannol. In this study, high-speed countercurrent chromatography (HSCCC) was applied for the separation of stilbene polyph...
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An algal enzyme required for biosynthesis of the most abundant marine carotenoids
2020 / Science AdvancesFucoxanthin and its derivatives are the main light-harvesting pigments in the photosynthetic apparatus of many chromalveolate algae and represent the most abundant carotenoids in the world’s oceans, thus being major facilitators of marine primary production. A central step in fucoxanthin biosynthesis that has been elusive so far is the conversion of violaxant...
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Heptacyclic oligophenalenones from the soil fungus Talaromyces bacillisporus BCC17645
2020 / TetrahedronFour new oxaphenalenone dimers (bacillisporins I and J, duclauxamides B and C) together with four known compounds (bacillisporins A – C and duclauxamide A1) were isolated from the soil fungus Talaromyces bacillisporus BCC17645. Duclauxamides B and C were the rare N-containing oxaphenalenone dimers isolated from this fungus. Chemical structures were determined...
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Novel torus shaped g-C3N4 photocatalysts
2020 / Applied Catalysis B: EnvironmentalTorus shaped g-C3N4 particles were created for first time via flame spray pyrolysis (FSP) process and tested for photocatalytic H2 production under visible light irradiation. It was found that the precursor dispersion concentration is important for the particles final morphology as diverse shapes can be obtained. It was established that the FSP process affects the ...
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