ZnO-decorated green-synthesized multi-doped carbon dots from for sustainable photocatalytic carbamazepine degradation.

The promising green synthesis of carbon dots (CDs) from microalga was achieved using simple hydrothermal and microwave-assisted methods. Doping of nanomaterials by nonmetals (N, S, and P) was confirmed by X-ray photoelectron spectroscopy (XPS), while the existence of metals in the CDs was confirmed by inductively coupled plasma optical emission spectroscopy (ICP-OES) and transmission electron microscopy (TEM), and Mg, Ca, K, and Na were found as the dominant doped metals. The novel nanomaterials with excellent photoluminescence (PL) properties were used for the modification of ZnO obtained by a simple hydrothermal process.

Preparation and Characterization of Defective TiO. The Effect of the Reaction Environment on Titanium Vacancies Formation.

Among various methods of improving visible light activity of titanium(IV) oxide, the formation of defects and vacancies (both oxygen and titanium) in the crystal structure of TiO is an easy and relatively cheap alternative to improve the photocatalytic activity. In the presented work, visible light active defective TiO was obtained by the hydrothermal reaction in the presence of three different oxidizing agents: HIO, HO, and HNO. Further study on the effect of used oxidant and calcination temperature on the physicochemical and photocatalytic properties of defective TiO was performed.

Hybrid TiO-Polyaniline Photocatalysts and their Application in Building Gypsum Plasters.

Hybrid materials of conjugated polymer and titanium(IV) oxide have attracted considerable attention concerning their potential benefits, including (i) efficient exploitation of visible light, (ii) a high adsorption capacity for organic contaminants, (iii) and effective charge carriers separation. The new class of the photocatalysts is promising for the removal of environmental pollutants in both aqueous and gaseous phases. For the first time, in this study, the polyaniline (PANI)-TiO hybrid composite was used for the degradation of phenol in water and toluene in the gas phase.

Medical-Grade PCL Based Polyurethane System for FDM 3D Printing-Characterization and Fabrication.

The widespread use of three-dimensional (3D) printing technologies in medicine has contributed to the increased demand for 3D printing materials. In addition, new printing materials that are appearing in the industry do not provide a detailed material characterization. In this paper, we present the synthesis and characterization of polycaprolactone (PCL) based medical-grade thermoplastic polyurethanes, which are suitable for forming in a filament that is dedicated to Fused Deposition Modeling 3D (FDM 3D)printers.