Facile Preparation of Cellulose Beads with Tunable Graded Pores and High Mechanical Strength.

Cellulose-based hierarchical porous beads exhibit significant application potential in adsorption and separation systems due to their degradation and biocompatibility. However, the current fabrications of cellulose beads show poor mechanical properties and a difficult-to-regulate hierarchical porous structure, reducing their lifespan of use and limiting their application in fine separation. Here, we reported the facile creep-drop method to prepare cellulose beads that enabled systemic regulation of the macro-size, micropore structures, and mechanical properties by optimizing injection nozzle diameter, the composition of the coagulation bath, the temperature of the coagulation bath, and cellulose concentration.

Antibacterial Nanocellulose-TiO/Polyester Fabric for the Recyclable Photocatalytic Degradation of Dyes.

In this paper, we report an antibacterial, recyclable nanocellulose-titanium dioxide/polyester nonwoven fabric (NC-TiO/PET) composite for the highly efficient photocatalytic degradation of dyes. The NC-TiO was loaded onto the surface of flexible PET nonwoven fabric through a simple swelling and dipping method. The NC-TiO in the particle size range of ~10 nm were uniformly attached to the surface of the PET fibers.

synthesis of TiO/NC on cotton fibers with antibacterial properties and recyclable photocatalytic degradation of dyes.

A cotton fabric/titanium dioxide-nanocellulose (TiO-Cot.) flexible and recyclable composite material with highly photocatalytic degradation of dyes and antibacterial properties was synthesized. During the preparation process, nano-TiO particles were synthesized through an strategy and grown on cotton fiber, and were wrapped with cellulose nanocrystals (NC).

Silk-Waste-Derived Porous Carbon for Fast Electric Heating under Safe Voltage.

Fast and safe electric heating is highly needed in extreme climates or thermal therapy. Herein, porous activated carbon derived from silk waste is prepared by a simple method. Various porous activated carbons are obtained using different types and concentrations of activator (KOH, KCl, and KHCO).

In-situ synthesis of CuO on cotton fibers with antibacterial properties and reusable photocatalytic degradation of dyes.

In this study, the cotton fabrics/cuprous oxide-nanocellulose (CuO-NC) flexible and recyclable composite material (COCO) with highly efficient photocatalytic degradation of dyes and antibacterial properties was fabricated. Using flexible cotton fabrics as substrates, CuO were in-situ synthesized to make CuO uniformly grew on cotton fibers and were wrapped with NC. The photocatalytic degradation ability of COCO-5 was verified by use methylene blue (MB), the degradation rate was as high as 98.

Soluble expression and purification of high-bioactivity recombinant human bone morphogenetic protein-2 by codon optimisation in Escherichia coli.

We developed a simple method of preparing recombinant human bone morphogenetic protein-2 (rhBMP-2) with high biological activity. This rhBMP-2 was overproduced in Escherichia coli as a fusion protein with thioredoxin 6xHis-tag at its amino terminus. The cDNA fragment of human bone morphogenetic protein-2 (hBMP-2) fused to the secretion signal of alkaline phosphatase (PhoA) was expressed under T7 promoter in E.

Influence of reaction conditions on the self-assembly of the natural silk sericin protein.

In the past years, the self-assembly of specific proteins has been paid more and more attention due to their significant role in human health and fabrication of new materials. In this article, we explore the effect of reaction conditions on the self-assembly of natural silk sericin protein, including the molecular weight and the concentration of sericin, pH, and metal ions in the reaction system. The results indicate that all these factors, especially species and concentration of metal ions, could influence the self-assembly process of the silk sericin protein.

Degradation pattern of porous CaCO3 and hydroxyapatite microspheres in vitro and in vivo for potential application in bone tissue engineering.

Despite superior clinical handling, excellent biocompatibility, biodegradation property of calcium phosphate needs to be improved to coincide with the rate of new bone formation. In this study, spherical CaCO3 are fabricated in the presence of the silk sericin and then transformed into porous hydroxyapatite (HAP) microspheres via hydrothermal method. The degradation behavior of obtained CaCO3, HAP and their mixture is first investigated in vitro.