A novel biological strategy for morphology control of PbWO4 crystals in tomato extract |
| |
| Authors: | Shen Yuhua Zhang Yan Chen Yiqing Li Shikuo Zhang Qingfeng Xie Anjian |
| |
| Institution: | a School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China;b School of Chemistry and Chemical Engineering, Anhui University, Hefei 230039, China |
| |
| Abstract: | PbWO(4) crystals were readily synthesized by reacting lead oxide (PbO(2)) with sodium tungstate (Na(2)WO(4)·2H(2)O) at room temperature in the presence of tomato extract. Biomolecules such as vitamins, proteins in the extract played both the roles of reductant and template. The size and morphology of the PbWO(4) crystals could be controlled by adjusting the concentration of the reactants. When the concentration ratio of PbO(2) and Na(2)WO(4) was increased, the morphologies of the products varied from spherical to fusiform. Room-temperature fluorescence spectra indicated the products had a slight blue shift compared to the solid structure, which may be due to the structure defects in the crystals. The possible mechanism of PbWO(4) crystal growth in tomato extract was discussed. |
| |
| Keywords: | Tomato extract Lead tungstate Crystal Fluorescence spectra |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ |
