Highly Efficient Photocatalytic Degradation of Tetracycline by Modifying UiO-66 via Different Regulation Strategies.

Wastewater containing organic pollutants cause potential harm to the environment and human health. A series of zirconium-organic frameworks (UiO-66) and their composites were synthesized by solvothermal methods, including band gap adjustment, heterojunction construction, and metal ion doping. For the model pollutant tetracycline (TC), all of the prepared catalysts could achieve effective degradation of it.

Investigation of the Compatibility and Damping Performance of Graphene Oxide Grafted Antioxidant/Nitrile-Butadiene Rubber Composite: Insights from Experiment and Molecular Simulation.

Rubber damping materials are widely used in electronics, electrical and other fields because of their unique viscoelasticity. How to prepare high-damping materials and prevent small molecule migration has attracted much attention. Antioxidant 4010NA was successfully grafted onto graphene oxide (GO) to prepare an anti-migration antioxidant (GO-4010NA).

The pivotal role of oxygen in establishing superlow friction by inducing the in situ formation of a robust MoS transfer film.

The achievement of superlow friction is vital for the engineering application of hydrogenated diamond-like carbon (H-DLC), but it always fails in an oxygen atmosphere. In this paper, robust superlow friction was achieved by MoS flakes and H-DLC composite films in a large range of atmospheres, especially in oxygen. The results showed that the composite structure could only retain the superlow friction for an short time in pure argon, nitrogen and carbon dioxide; surprisingly, oxygen was capable of remaining in the near frictionless state with a friction coefficient as low as 0.

The preparation and study of regenerated cellulose fibers by cellulose carbamate pathway.

In this work, using cotton pulps and urea as raw materials, cellulose carbamates (CCs) were successfully prepared by liquid-solid phase in the high-boiling aprotic and polar solvent (DMAc). Regenerated cellulose (RC) fibers were successfully spun from cellulose carbamate in a NaOH aqueous solution by wet spinning on a conventional viscose filament device. And the structures and properties of products were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), Thermal gravimetric analysis (TG) and Scanning electron microscopy (SEM), rheology measurement and dye testing.

The preparation and study of cellulose carbamates and their regenerated membranes.

Using wood pulps with the average degree of polymerization 300-350 and urea as raw materials, cellulose carbamates were successfully synthesized by esterification reaction in N, N-dimethylacetamide(DMAc), an inexpensive, high boiling aprotic and polar solvent, for the purpose of improving the solubility of cellulose, reducing costs and environmental pollution. The products were dissolved in 9% sodium hydroxide solution at a low temperature after washing and drying and the cellulose carbamates solutions were obtained. The solutions were uniformly casted on a glass support after degassing.

A new approach to highly electrooptically active materials using cross-linkable, hyperbranched chromophore-containing oligomers as a macromolecular dopant.

A new, practical approach to a variety of highly electrooptically active polymers for device development is described. It involves the use of a new thermally cross-linkable, hyperbranched oligomer containing nonlinear optical (NLO) chromophores as a macromolecular dopant in a common host polymer. A series of NLO polymeric blends were readily formulated and showed large and stable electrooptic (EO) coefficients (up to 65 pm/V).