1. Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics of Shandong Province; Qilu University of Technology; Jinan 250353 China
2. Key Laboratory of Amorphous and Polycrystalline Materials in Universities of Shandong; Qilu University of Technology; Jinan 250353 China
3. Instrumental Analysis Center; Qilu University of Technology; Jinan 250353 China
4. Section of Chemistry; Aalborg University; Aalborg DK-9000 Denmark