No abstract

No abstract

Barium tin hydroxide/tin dioxide nanorods are synthesized by a facile hydrothermal method. The morphology, structure and optical performance of the nanorods are characterized via X-ray diffraction, electron microscopy, X-ray photoelectron spectroscopy and solid ultraviolet-visible (UV-vis) diffuse reflectance spectrum. The nanorods are mainly composed of monoclinic BaSn(OH) 6 and orthorhombic SnO 2 phases with the length and diameter of about 5 µm and 50-150 nm, respectively. The formation process of the nanorods is investigated based on the morphology and structure evolution of the products from different hydrothermal conditions. Solid UV-vis diffuse reflectance spectrum shows that the nanorods belong to typical semiconductor with the band gap of 3.74 eV. The barium tin hydroxide/tin dioxide nanorods are used for the photocatalytic degradation of gentian violet under UV light irradiation. The degradation efficiency reaches 93.2% with the irradiation time of 8 h adding 10 mg nanorods in 10 mL 10 mg mL −1 gentian violet solution. The reactive species trapping results show that hydroxyl radicals, holes and superoxide radicals are main reactive species for gentian violet degradation. The barium tin hydroxide/tin dioxide nanorods are stable for the photocatalytic reaction of the gentian violet.

No abstract

Background: Bismuth-containing nanoscale materials exhibit great application potential in catalysts, optical devices, electron devices, photo-electric devices and sensors owing to their good catalytic, optical, electric, photoelectric and sensing performance. Special research interest has been devoted to ternary bismuthate nanoscale materials due to their special layered structure, large specific surface area, excellent optical, catalytic, electrical and electrochemical performance. Therefore, it is essential to synthesize novel ternary bismuthate nanoscale materials for practical application. Methods: The article reviews the recent progress and patents on the ternary bismuthate nanoscale materials. The recent progress and patents on the synthesis and application of the ternary bismuthate nanoscale materials are discussed. The possible development direction of the ternary bismuthate nanoscale materials for the synthesis and application is also analyzed. Results: The ternary bismuthate nanoscale materials including zinc bismuthate, copper bismuthate, barium bismuthate, silver bismuthate, sodium bismuthate, lanthanum bismuthate nanoscale materials can be synthesized by hydrothermal route, sol-gel route, solvothermal decomposition route and ion-exchange method et al. The ternary bismuthate nanoscale materials exhibit great application promising in the fields of photocatalysts, sensors and batteries et al. Conclusion: Large-scale synthesis of ternary bismuthate nanoscale materials at low cost, doping and combination using different nanoscale materials are important research directions for future research.