Abiotechnology of Indigofera tinctoria L. on the Saline Land of Aral Sea Basin and Producing of the Natural Plant Indigo Pigment for the Industry

The possibility of cultivation of lndigofera tinctoria L. plants in ecologically degraded and saline lands of the Aral Sea Basin was studied. A new salt-resistant Indigofera plant variety ＂Feruz-l＂ was producing by the classic methods of genetics and modem biotechnology.Agro-technology of cultivation as main and secondary culture after wheat was developed and recommended to the farmers of the country.The biotechnology of natural plant pigment indigo extraction has been developed and was recommended for using in different fields of industry： textile, pharmacy-pharmacology, perfume-cosmetic, architectural-decorative and food industry. Quantitative and qualitative HPLC （high pressure liquid chromatography） method of determination of plant natural indigo has been also developed.

Optimization of Preparation Conditions of ZnO-TiO2 Nanoparticles by Sol-Gel Technique for Photodegradation Indigo Carmine

The results of a laboratory-scale study of an environmentally friendly water treatment method are presented, where the dyes in the industrial textile wastewater were removed by photocatalytic process. ZnO-TiO2 nanoparticles as photocatalyst has been prepared via sol-gel technique. Several factors were studied in order to find the conditions that could be used to synthesize this photocatalyst for optimum degradation of Indigo Carmine dye in aqueous solutions. The optimum condition for preparation of ZnO-TiO2 mixed oxide are 1.5 TiO2/ZnO, 4 C2HsOH/TIP, 4 H20/TIP, 0.3 HNO3/TIP molar ratios, without aging, 550 ℃ calcination temperature for 5 hrs at which the surface area and the photocatalytic activity are 186.1 m^2/g and 96.1, respectively. Generally, the photocatalytic activity of the samples prepared by sol-gel technique is the highest activity. Details of the synthesis procedure and results of the characterization studies of the produced xerogel are presented in this paper.

Triton X-100 induced cuboid-like BiVO4 microsphere with high photocatalytic performance

A highly active visible light-induced BiVO4 photocatalyst was prepared by a simple co-precipitation method using ammonia solution as a pH adjustor and Triton X-100（TX100） as a structure directing agent.The physical properties of the prepared BiVO4photocatalyst were investigated by several techniques such as X-ray diffractometer（XRD）,Brunauer-Emmett-Teller（BET） surface area measurement,scanning electron microscopy（SEM）,energy dispersive analysis（EDS）,Fourier-transformed infrared spectroscopy（FT-IR）,photoluminescence（PL）,and UV-Vis diffused reflectance spectroscopy（DRS）.XRD results revealed the existence of a monoclinic scheelite structure in both the unmodified and the modified samples.The TX100 played a crucial role to control the cuboid-like shape morphology of BiVO4.The DRS results showed that the as-prepared cuboid BiVO4 possessed enhanced visible light absorption range compared with that of the unmodified BiVO4.The photocatalytic activity was evaluated via indigo carmine（IC） degradation under visible light irradiation.The modified BiVO4 showed higher photocatalytic efficiency than the unmodified BiVO4 and the commercial P25-TiO2 which could be ascribed to the better charge separation efficiency.