Non-antibiotic dependent photothermal antibacterial hemostatic MXene hydrogel for infectious wounds healing.

On account of the existence of antibiotic resistance, the wound healing of pathogenic infection is still a challenge in modern society. A desirable wound dressing should own the abilities of adhesiveness, hemostasis and good mechanical property, meanwhile the property of eliminating bacteria without side effects is also highly needed. In this work, we established a kind of hydrogel based on carboxymethyl cellulose-graft-tyramine (CMC-Ty) and MXene (TiCT) through employing HO/HRP (horseradish peroxidase) as the initiator, then the as-prepared hydrogel (named CMC-Ty/MXene) was immersed in tannic acid (TA) solution, and this TA-treated hydrogel was called CMC-Ty/MXene+TA.

Development of antioxidant active packaging films with slow release properties incorporated with tea polyphenols-loaded porous starch microcapsules.

Slow release active packaging films can realize the sustained release of active agents and prolong the shelf life of food. For this aim, a novel slow release active polyvinyl alcohol (PVA) film was developed by using solution casting method. With porous starch loaded with tea polyphenols (PSTP) as core material and maltodextrin (MD) as wall material, PSTP@MD microcapsules were prepared using freeze drying method and used as slow release carrier of tea polyphenols (TP) in the active films.

Hydrogenolysis of 5-Hydroxymethylfurfural to 2,5-Dimethylfuran Over a Modified CoAl-Hydrotalcite Catalyst.

The catalytic hydrogenolysis of 5-hydroxymethylfurfural (HMF) to 2,5-dimethylfuran (DMF) is a promising route towards sustainable liquid fuels with a high energy density. Herein, a novel CuCoNiAl-containing mixed metal oxide catalyst (CuCoNiAl-MMO) was prepared by calcination a layered double hydroxide (LDH) precursor in N at 500 °C, then applied for the catalytic hydrogenolysis of HMF to DMF. The effects of reaction time, reaction temperature and hydrogen pressure on DMF selectivity were investigated.