| 第一作者： | Lang, QL (Lang, Qiaolin); Fu, GY (Fu, Guangying); Zhao, HN (Zhao, Haonuan); Wang, J (Wang, Juan); Yang, XB (Yang, Xiaobo); Valtchev, V (Valtchev, Valentin); |
|---|---|
| 联系作者： | Lang, QL (Lang, Qiaolin); Fu, GY (Fu, Guangying); Zhao, HN (Zhao, Haonuan); Wang, J (Wang, Juan); Yang, XB (Yang, Xiaobo); Valtchev, V (Valtchev, Valentin); |
| 发表年度： | 2021 |
| 期： | 12 |
| 卷： | 21 |
| 页： | 7298-7305 |
| 摘要： | Three amino acids, namely proline, histidine, and lysine, are used as organic additives in the hydrothermal synthesis of the zeotype material AlPO4 center dot 1.5H(2)O-H-3 (framework topology code APC). A detailed analysis of the factors controlling the formation of AlPO4 center dot 1.5H(2)O-H3 is performed. The role of amino acids in the formation process of the frameworks is addressed based on comparisons of the crystal phase selection of different synthetic recipes and the insights provided by the Fourier transform infrared analysis of the synthetic gels and the crystalline products. The phase transition of AlPO4 center dot 1.5H(2)O-H3 to AlPO4-C (APC) and subsequently to AlPO4-D (APD) upon heating to 1000 degrees C was followed by in situ X-ray diffraction analysis. The present work has been the first progress in understanding the role of these bioactive molecules in the crystallization of inorganic open-framework microporous materials. An active, nonclassical structure-directing role that amino acids play during the zeotype crystallization is proposed, that is, positively charged amino acids cap the growing surface of microporous AlPO4 and attract aluminate and phosphate anions from the solution phase for further growth. |
| 刊物名称： | CRYSTAL GROWTH & DESIGN |
| 影响因子： | 4.153 |
| 全文链接： | https://pubs.acs.org/doi/10.1021/acs.cgd.1c01160 |
