Topotactic soft chemical synthesis and photocatalytic performance of one-dimensional AgNbO3 nanostructures
| Autor: | Xingang Kong, Zhanglin Guo, Cuiyan Li, Liyun Cao, Puhong Wen, Jianfeng Huang, Qi Feng, Jie Fei, Youquan Sun |
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| Rok vydání: | 2014 |
| Předmět: |
Aqueous solution
Materials science Potassium niobate Mechanical Engineering Mineralogy Condensed Matter Physics Crystal chemistry.chemical_compound Crystallography Nanocrystal chemistry Mechanics of Materials Photocatalysis General Materials Science Selected area diffraction Perovskite (structure) Visible spectrum |
| Zdroj: | Materials Letters. 137:110-112 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2014.08.150 |
| Popis: | A topotactic soft chemical process was used for the synthesis of one-dimensional AgNbO 3 nanostructures. Firstly, using a tunnel structure potassium niobate K 2 Nb 2 O 6 · n H 2 O filiform crystal as precursor, the K + in K 2 Nb 2 O 6 · n H 2 O were exchanged by an Ag + in the AgNO 3 water solution, forming Ag + ion-exchanged sample. Secondly, the Ag + ion-exchanged sample was heat-treated to obtain the perovskite AgNbO 3 by in situ topotactic structural transformation reaction. The one-dimensional nanostructured AgNbO 3 was characterized by XRD, FE-SEM, TEM, SAED, EDS and UV–vis diffuse reflectance spectra. The one-dimensional AgNbO 3 nanostructures were constructed from nanocrystals arranged along [011]-crystal axis and with predominantly exposed (100) facet. The samples were able to degrade MB under ultraviolet irradiation and catalyze water-splitting in aqueous solution under illumination of visible light. |
| Databáze: | OpenAIRE |
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