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Nanofibrillated cellulose (NFC) is becoming popular in antibacterial material due to its favorable biocompatibility, stability, and modifiable properties, which give it a great potential as a template for the deposition of silver nanoparticles (Ag NPs). To investigate the deposition procedure and antibacterial ability of Ag NPs, dialdehyde nanofobrillated cellulose (DATNFC) prepared by oxidation of nanofibers was used to initiate the silver mirror reaction. Silver nanoparticles (∼31.07 nm) were successfully fabricated and uniformly anchored onto DATNFC (DATNFC@Ag). The film containing DATNFC@Ag via vacuum filtration showed excellent mechanical properties and exhibited efficient antibacterial activity against both Staphylococcus aureus and Escherichia coli. Dialdehyde nanofobrillated cellulose-induced silver ions release slowly, which displayed a controllable release of silver ions with a rate of 0.63% per 2 days and an ultralong Ag + release period of 323.6 days. The Ag + release time was prolonged due to the efficient in situ immobilization of silver nanoparticles. This study offers a novel and simple way to fabricate a green, controlled release and long-term antibacterial material based on dialdehyde nanofibrillated cellulose/silver-nanoparticle composites and opens a new window for the rapid and highly efficient synthesis of silver nanoparticles.

A degradable dual lignocellulosic fiber with superwetting characteristics was successfully fabricated by a strategically adjusted condensation reaction of melamine and formaldehyde, maintaining high efficiency for oil/water mixture separation.

Conductive hydrogels have emerged as promising material candidates for multifunctional strain sensors attributing to their similarity to biological tissues, good wearability, and high accuracy of information acquisition. However, it is...

As a nanoscale renewable resource derived from lignocellulosic materials, cellulose nanocrystals (CNCs) have the features of high purity, high crystallinity, high aspect ratio, high Young's modulus, and large specific surface area. The most interesting trait is that they can form the entire films with bright structural colors through the evaporation‐induced self‐assembly (EISA) process under certain conditions. Structural color originates from micro‐nano structure of CNCs matrixes via the interaction of nanoparticles with light, rather than the absorption and reflection of light from the pigment. CNCs are the new generation of photonic liquid crystal materials of choice due to their simple and convenient preparation processes, environmentally friendly fabrication approaches, and intrinsic chiral nematic structure. Therefore, understanding the forming mechanism of CNCs in nanoarchitectonics is crucial to multiple fields of physics, chemistry, materials science, and engineering application. Herein, a timely summary of the chiral photonic liquid crystal films derived from CNCs is systematically presented. The relationship of CNC, structural color, chiral nematic structure, film performance, and applications of chiral photonic liquid crystal films is discussed. The review article also summarizes the most recent achievements in the field of CNCs‐based photonic functional materials along with the faced challenges.

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