Adsorption properties of heavy metals and antibiotics by chitosan from larvae and adult Trypoxylus dichotomus.

Chitosan was prepared by hydrothermal deacetylation from multi-step protein purification chitin based on Trypoxylus dichotomus, for treating heavy metals and antibiotics. Chitosan with higher deacetylation degree and lower molecular weight were synthesized. The adult chitosan was composed of nanofibers arranged more evenly, showing higher yield, thermal stabilities and antimicrobial properties.

Preparation and properties of floral CaO/ZnO composite from Achatina fulica snail shell.

In this study, CaO prepared by calcination treatment from abandoned Achatina fulica shell was used as a raw material, and the floral CaO/ZnO photocatalytic composite material was prepared through co-precipitation method. SEM study showed ZnO with spindle-like petals in the range of 500-1000 nm grown on the surface of CaO carrier. The mapping image shows that the base component of the floral structure is mainly CaO, which is because CaO is not only in the reaction as a carrier, but also creates an alkaline environment in the methanol system, which is advantageous for co-precipitation.

TiOthin-walled nanofiber burst tube doped with FeOnanograss for efficient degradation of levofloxacin: effect of precursor.

By means of electrospinning combined with impregnation and calcination, the thin-walled TiOnano-burst tubes with FeOnanograss on the surface were synthesized. The effects of precursor properties and concentration on the morphology, structure and photochemical properties of the prepared nanostructures were studied. Adding K[Fe(CO)]·3HO into the electrospinning solution as the precursor can not only realize the preparation of nanograss and thin-walled nano-burst tubes, but also achieve better degradation effect than that of FeCl.

Shape-controllable nanofibrous membranes with well-aligned fibers and robust mechanical properties for PM capture.

In this study, design and fabrication of novel shape-controllable and aligned nanofibrous membranes with self-cleaning and robust mechanical properties is presented. Smooth and uniform nanofibers can be fabricated by blending polyamide 66 (PA66) and poly (vinyl butyral) (PVB) with a mass ratio of 6/4 during electrospinning. Subsequently, the prepared nanofibrous membranes were placed in a vacuum drying oven at a given temperature (90 °C) for heat treatment, and the morphology of the composite nanofibers was controlled by an external tensile force.

Novel SA@Ca/RCSPs core-shell structure nanofibers by electrospinning for wound dressings.

Therapeutic drugs remain of great significance for the absorption of wound blood, the closure of wounds and rapid wound healing. Hence, we propose a novel composite nanofiber membrane with the above characteristics as a wound healing material. We utilize the reaction of calcium ion and alginate gel, sodium alginate (SA) and skin peptides (RCSPs) extracted from discarded skin; these two natural substances were successfully used to prepare composite nanofibers by coaxial electrospinning.