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aqueoussolutions, etc ; benzimidazole; carbendazim; cold; food chemistry; pesticide degradation; survival rate; toxicity; yeasts; Show all 9 Subjects
Abstract:
... Dielectric barrier discharge (DBD) cold plasma, as a new nonthermal technology, has attracted increasing attention in pesticide degradation. In this study, DBD plasma was used to degrade carbendazim (MBC) in aqueous solution. Under the optimal conditions (160 kv, 50 Hz), MBC solution (0.5 μg/mL) was degraded by 89.04% after plasma treatment for 10 min. Four MBC degradation products were identified ...
aqueoussolutions, etc ; cold; fluorenes; humic acids; hydroxylation; ice; isomers; photolysis; tandem mass spectrometry; China; Show all 10 Subjects
Abstract:
... The photochemical behavior of organic pollutants in ice is poorly studied in comparison to aqueous photochemistry. Here we report a detailed comparison of ice and aqueous photodegradation of two representative OH-PAHs, 2-hydroxyfluorene (2-OHFL) and 9-hydroxyfluorene (9-OHFL), which are newly recognized contaminants in the wider environment including colder regions. Interestingly, their photodegra ...
aqueoussolutions, etc ; food chemistry; fructose; functional foods; hydrogen; hydrophobicity; methylation; molecular weight; polysaccharides; solvents; Show all 10 Subjects
Abstract:
... Ophiopogonis Radix polysaccharides with various bioactivities have caught people's attention in the pharmaceutical and functional food industries. It is necessary to reveal their structures, chain conformations, and solvent behaviors. A neutral polysaccharide named ORP-1 with molecular weight of 3667 Da was obtained from Ophiopogonis Radix. It was composed of d-fructofuranose and d-glucopyranose i ...
... Photocatalytic technology is widely explored as a promising alternative for water treatments. However, low photocatalytic efficiency and selectivity usually limit its practical application. Herein, we develop the synthesis of two-dimensional zinc oxide (ZnO) nanosheets decorated with copper (Cu)-palladium (Pd) bimetallic nanoparticles (NPs) for the degradation of organic dyes in an aqueous solutio ...
aqueoussolutions, etc ; adsorption; deionization; electrical conductivity; electrodes; energy efficiency; graphene; nanosheets; niobium; phosphates; sustainable technology; uranium; Show all 12 Subjects
Abstract:
... As an energy-efficient and eco-friendly technique, capacitive deionization (CDI) has shown great potential for uranium (U(VI)) capture recently. However, extracting U(VI) with high kinetics, capacity and selectivity remains a major challenge due to the current surface active sites-based material and co-existing ions in aqueous solution. Here we rationally designed a layered 2D/2D niobium phosphate ...
aqueoussolutions, etc ; Aspergillus flavus; Chlorella vulgaris; adsorption; biomass; microalgae; mycelium; pH; remediation; sorption isotherms; wastewater; water treatment; Show all 12 Subjects
Abstract:
... Using filamentous fungi to capture unicellular microalgae is an effective way for microalgae recovery in water treatment. Here, fungi Aspergillus flavus ZJ-1 and microalgae Chlorella vulgaris WZ-1 isolated from a copper tailings pond were used to study the capture effect of ZJ-1 on WZ-1. The highest capture efficiency (97.85%) was obtained within 6 h under the optimized conditions of 30 °C, 150 rp ...
... An electrochemical impedimetric immunosensor was constructed based on a hierarchical nanostructured CoCo Prussian blue analogue entrapped by a Zr-based porphyrin MOF (denoted by CoCoPBA@PCN-221) for the sensitive detection of deoxynivalenol (DON). Given that CoCoPBA@PCN-221 demonstrated a hierarchical nanostructure, large specific surface area, and the synergistic effect between mixed metal valenc ...
... Covalent organic frameworks (COFs), a class of flexibly tunable crystalline materials, have fascinating potential in photocatalytic hydrogen peroxide (H₂O₂) evolution under visible light irradiation. However, achieving efficient catalytic activity by tuning the composition of COFs and the linkages of building blocks is still a challenge. Herein, four imine-linked COFs with different numbers of hyd ...
... The rheological performance of bacterial cellulose and carboxymethyl cellulose (BC:CMC) dry formulations with mass ratios of 1:1, 1:0.75 and 1:0.5 was compared with that of a commercial xanthan gum. The zero-shear viscosity and the yield stress of these hydrocolloids, at concentrations ranging from 0.001% to 0.5% (w/w), were determined by fitting the Cross and Herschel-Bulkley models to the flow c ...
aqueoussolutions, etc ; aggregation behavior; anisotropy; aspartic acid; clay; energy transfer; fluorescent dyes; laponite; ligands; nanoparticles; semiconductors; water content; Show all 12 Subjects
Abstract:
... The control over intermolecular interactions between chromophores at nanomaterial interfaces is important for sensing and light-harvesting applications. To that aim, inorganic nanoparticles with anisotropic shape and surface chemistry can serve as useful supports for organic modification. Herein, novel asymmetric perylene diimides with aspartic acid and oleyl terminal groups were grafted to the ed ...
aqueoussolutions, etc ; adsorption; ambient temperature; catalysts; crystal structure; liquid-liquid interface; methylene chloride; polymerization; surface area; water treatment; Show all 10 Subjects
Abstract:
... Covalent organic framework (COF) membranes have shown enormous potential for molecular separation due to their large surface areas and pre-designable structures. However, the mild and convenient preparation of COF membranes with high crystallinity has remained a significant challenge. In this work, we reported on a facile liquid–liquid interfacial polymerization method to fabricate self-standing i ...
... Herein, we present novel porous polyelectrolyte complexes (PECs) physically stabilized by electrostatic interaction between chitosan (CS) and oxidized starch of two sources, i.e. potato starch (OxPS), and rice starch (OxRS). Two strategies were employed for the preparation of PECs sponges: (i) freeze-thawing of CS aqueous solution followed by freeze-drying and adsorption of the polyanion solution, ...
... Our recent Communication suggested that ammonia in aqueous solution may preferentially destabilize large cages in methane clathrate hydrates. A Comment favored ammonia incorporation instead, but it did not accurately describe our proposed mechanism and relied primarily on studies conducted in different chemical systems and/or which used other preparation methods. ...
... In this research, a combined study on structures and vibrational spectra of antiviral rimantadine have been performed using hybrid B3LYP/6–311++G∗∗ calculations and the scaled quantum force field (SQMFF) procedure. Harmonic force fields and scaled force constants of Free Base (FB), Cationic (CA) and Hydrochloride (HCl) species derived from the antiviral rimantadine have been calculated in gas phas ...
... Self-assembled organothiol is a well-known process to endow specific protective properties and usually involves passive incubation. Researchers have recently confirmed that the potential-assisted method is more selective and faster than the passive method. This paper provides an original and promising approach for Cu protection by 2-mercaptobenzobthiazole (MBT) assembled film prepared from an aque ...
... Mid-frequency Raman difference spectra (MFRDS) analysis can be used to reveal the selective crystallization from solutions through determining the degree of similarity of the short-range orders between the assemblies of small organic molecules in solutions and their solid phases. Four solid phases of inosine (IR) (α-anhydrous IR (α-IR), β-anhydrous IR (β-IR), IR dihydrate (IRD), and amorphous IR ( ...
... The unique structural characteristics of metallic glasses make them highly qualified to be applied in the treatment of organic pollutants. In this work, the degradation of azo dyes in aqueous solutions by using Fe₇₈₋ₓCoₓSi₉B₁₃ (with x = 0, 6 and 12) metallic glass (MG) ribbons was performed, taking Acid Orange II (AO II) as colorant model pollutant. UV–vis spectral changes of AO II in aqueous solu ...
aqueoussolutions, etc ; computers; dissociation; solvents; Show all 4 Subjects
Abstract:
... We study NaCl ion-pair dissociation in a dilute aqueous solution using computer simulations both for the full system with long-range Coulomb interactions and for a well-chosen reference system with short-range intermolecular interactions. Analyzing results using concepts from Local Molecular Field (LMF) theory and the recently proposed AI-based analysis tool “State predictive information bottlenec ...
... We report a sensitive stripping voltammetry method for the detection of total arsenic in aqueous solution using gold macroelectrodes based on the underpotential deposition (UPD) of As ad-atoms. The detection of As(III) or total arsenic can be selectively made by changing deposition potential, with detection of the total As content by deposition at high potential (- 1.3 V) and of As(III) by deposit ...
aqueoussolutions, etc ; deformation; evaporation; oils; silica; Show all 5 Subjects
Abstract:
... The effects of ion concentration on the deformation and coalescence of particle-stabilized oil droplets dispersed in water were investigated. We emulsified a mixture of oil and an aqueous solution of silica particles with various NaCl concentrations ranging from 0 M to 3 M. Oil droplets were spontaneously compressed by evaporation of the water phase. At low ion concentrations (< 0.1 M), the drople ...