Recent advances in heavy metal removal by chitosan based adsorbents.

Applications of chitosan in environmental remediation: A review.

Multi-Functional Hydrogels for Flexible Zinc-Based Batteries Working under Extreme Conditions

Silver nanoparticles (AgNPs) represent one of the most explored categories of nanomaterials for new and improved biomaterials and biotechnologies, with impressive use in the pharmaceutical and cosmetic industry, anti-infective therapy and wound care, food and the textile industry. Their extensive and versatile applicability relies on the genuine and easy-tunable properties of nanosilver, including remarkable physicochemical behavior, exceptional antimicrobial efficiency, anti-inflammatory action and antitumor activity. Besides commercially available and clinically safe AgNPs-based products, a substantial number of recent studies assessed the applicability of nanosilver as therapeutic agents in augmented and alternative strategies for cancer therapy, sensing and diagnosis platforms, restorative and regenerative biomaterials. Given the beneficial interactions of AgNPs with living structures and their nontoxic effects on healthy human cells, they represent an accurate candidate for various biomedical products. In the present review, the most important and recent applications of AgNPs in biomedical products and biomedicine are considered.

https://www.mdpi.com/2079-4991/10/11/2318/pdf

An Updated Review on Silver Nanoparticles in Biomedicine.

Research progress of adsorption and removal of heavy metals by chitosan and its derivatives: A review.

Construction of physically crosslinked chitosan/sodium alginate/calcium ion double-network hydrogel and its application to heavy metal ions removal

The preparation of hydrogel wound dressing materials with high antibacterial activities and good biosafety simultaneously can be relatively challenging. Aiming at solving this crucial problem, a multi-functional chitosan/carboxymethyl chitosan/silver nanoparticles (CTS/CMCTS/AgNPs) polyelectrolyte composite physical hydrogel is constructed by in situ photoreduction of silver ions with α-hydroxy of CMCTS and semi-dissolution acidification sol-gel transition (SD-A-SGT) methods using natural polymers with no chemical reductant involved. The XRD, TEM and IR characterizations reveal a highly uniform structure of the composite hydrogel with good mechanical strength. The composite hydrogel also exhibits good self-healing ability, and the self-healing mechanism of the composite hydrogel prepared by natural polymers with high similarity is put forward on the basis of molecular dynamics simulation. The AgNPs gives the hydrogel excellent antibacterial activities against both S. aureus and P. aeruginosa., while the preparation method with no chemical reductant and crosslinking agent required endows the hydrogel high biocompatibility. The great application potentials of CTS/CMCTS/AgNPs polyelectrolyte composite hydrogel are demonstrated with its promoting effects on the healing of P. aeruginosa infected wounds as the wound dressing. It is a breakthrough in achieving hydrogels with desired biosafety and antibacterial activities simultaneously. The composite hydrogel is found with great application potentials as wound dressing.

Preparation of a chitosan/carboxymethyl chitosan/AgNPs polyelectrolyte composite physical hydrogel with self-healing ability, antibacterial properties, and good biosafety simultaneously, and its application as a wound dressing

Kelin Peng

Papers

Construction of physically crosslinked chitosan/sodium alginate/calcium ion double-network hydrogel and its application to heavy metal ions removal

Preparation of a chitosan/carboxymethyl chitosan/AgNPs polyelectrolyte composite physical hydrogel with self-healing ability, antibacterial properties, and good biosafety simultaneously, and its application as a wound dressing

A New Solid‐State Zinc–Air Battery for Fast Charge

Preparation of chitosan/sodium alginate conductive hydrogels with high salt contents and their application in flexible supercapacitors

Construction of a physically cross-linked carrageenan/chitosan/calcium ion double-network hydrogel for 3-Nitro-1, 2, 4-triazole-5-one removal