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SiO2 nano-powder is a new type of augmented injection agent, has the ability of stronger hydrophobicity and lipophilicity, and can be adsorbed on the rock surface so that it changes the rock wettability. It can expand the pore radius effectively, reduce the flow resistance of injected water in the pores, enhance water permeability, reduce injection pressure and augment injection volume. Using artificial...
Nanosphere lithography has potential in many areas, and there have been many methods that deposit the colloidal suspension onto the substrate. However, it is important and still difficult to control the uniformity of the monolayer on a plane substrate. In this study, we have found a method for a uniform monolayer of polystyrene beads by confining the droplets with microwells. By simply controlling...
It is widely accepted that self-assembling nanostructure of metals with well-defined spatial order is one of the promising ways for engineering new materials. Recent years revealed substantial progress in fabricating metal nanoparticles on ultrathin oxide films due to their ordered surface. In this work, we present the results on the adsorption of Pd nanoparticles on the ultrathin Al2O3 films prepared...
We report on the binding of nanoplastics onto a thin film of cellulose - the primary structural component of the cell-wall of green plants, many forms of algae and the oomycetes. The binding capacities of neutral and negatively charged nanoplastics were compared. Data from a fluorescence microplate reader showed that the adsorption of the neutral nanoplastic beads to be stronger than that of the negatively...
In this work, we present a systematic investigation of the influence of mixed-phase TiO2 with various a-TiO2 to r-TiO2 ratio (A/R) toward the DSSCs efficiency. It was found that though a-TiO2 showed better performance than r-TiO2 in DSSCs, the Ru-bipyridine dye (N719) sensitized TiO2 films fabricated by mixed-phase TiO2 with A/R = 9 gives the highest cell efficiency.
This paper reports a rapid, simple and direct method for the synthesis of gold nanoparticles (AuNPs) in polypyrrole (PPy) film, which provides a biocompatible matrix for the strong adsorption of antibodies. The electrochemical synthesis of AuNPs/PPy composite on gold or carbon electrode occurs within 20 minutes, and does not involve addition of any nanoparticles or reducing agent. This method is compatible...
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