Bio-molecule Assisted Synthesis Of Nano-(hydr) Oxides

In this paper, the hydrothermal method assisted by biomolecules was studied, and a series of oxides and hydroxides were synthesized.With results of XRD,SEM,TEM,FESEM,HRTEM,FTIR and PL spectrum, the growth mechanism was investigated preliminarily. Our findings in novel properties of nanomaterials open up a wide range of new potential applications in chemistry, energy, environmental protection, biotechnology.The synthesis of nanocrystalline ZrO2 has been carried out by using L-lysine-assisted hydrothermal method. Detailed characterization using XRD and TEM revealed all samples to be mixtures of tetragonal and monoclinic phases. It was also demonstrated that tetragonal phase was the dominant phase, while the monoclinic phase was produced by increasing the temperature. This synthesis route gives almost monodisperse products with mean particle sizes below 10 nm.The as-synthesized nanocrystalline ZrO2 own photocatalytic activities of RhB under UV irradiation which is attributed to the more oxygen vacancies on the surface of the nanocrystalline ZrO2.A new approach for constructing complex nanostructures was developed, which allows us to design superhydrophobic surfaces of nano Ni(OH)2.FE-SEM, TEM, HRTEM, XRD, FT-IR analysis, UV/Vis spectroscopy and PL spectroscopy allowed us to propose a nucleation-growth-assembly, the N-G-A mechanism. The peony-likeβ-Ni(OH)2 complex nanostructures, which are superhydrophobic with CA values over 150°and excellent discharge capacities of 244±8.2 mAhg-1 with good stability, may enable the complex nanostructures to find applications in environment protection and green secondary cells.We have developed a facile hydrothermal route for the synthesis of semiconductor In(OH)3 nanocubes with superhydrophobicity:the CA value being over 150°accompanying with sliding angle of 1°.Also, the In(OH)3 nanocubes show excellent photocatalytic activity of RhB under UV light irradiation:the degradation rate of RhB reaching 93.3% after 16 h of adding the as-synthesized In(OH)3 nanocubes in the RhB solution. The present work provides a new strategy to prepare novel multifunctional semiconductor In(OH)3 nanomaterial with potential industrial applications, such as selfcleaning, corrosion prevention, as well as environmental protection.Complex magnesium hydroxide nanostructures were synthesized by a hydrothermal route, which owned all the characteristics needed to be a successfully flame retardant filler in ABS,offering an excellent flame retardancy without destroying the mechanical properties of ABS nanocomposites. This kind flame retardant is expected to be used in market in the future. It has been first demonstrated that the flower-like Mg(OH)2 nanostructures own superhydropobicity, which can find practical applications in environmental protection.