Controllable synthesis of CaTi2O4(OH)2 nanoflakes by a facile template-free process and its properties |
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| Authors: | Weixia Dong Bin Song Gaoling Zhao Gaorong Han |
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| Affiliation: | 1. State Key Laboratory of Silicon Materials & Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, PR China;2. Department of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, PR China;3. Department of Physics, Zhejiang University, Hangzhou 310027, PR China |
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| Abstract: | Serrated leaf-like CaTi2O4(OH)2 nanoflake crystals were synthesized via a template-free and surfactant-free hydrothermal process. The samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). The growth process for CaTi2O4(OH)2 nanoflakes was dominated by a crystallization–dissolution–recrystallization growth mechanism. BET analysis showed that CaTi2O4(OH)2 nanoflakes had mesoporous structure with an average pore size of 8.7 nm, and a large surface area of 88.4 m2 g−1. Cyclic voltammetry and galvanostatic charge–discharge tests revealed that the electrode synthesized from CaTi2O4(OH)2 nanoflakes reached specific capacitances of 162 F g−1 at the discharge current of 2 mA cm−2, and also exhibited excellent electrochemical stability. |
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| Keywords: | CaTi2O4(OH)2 Nanoflakes Template-free Specific capacitance Photocatalytic activity |
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