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287685166
½ð³æ (ÕýʽдÊÖ)
- ·ÒëEPI: 14
- Ó¦Öú: 0 (Ó×¶ùÔ°)
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¡¾´ð°¸¡¿Ó¦Öú»ØÌû
wuyao118(½ð±Ò+15, ·ÒëEPI+1): 2011-05-07 20:56:22
| With the reaction temperature elevating, [Y (en) 2] 2 + is broken down into ethylenediamine and Y ion, then ethylenediamines react with carbon disulfide (2) (CS2 can pass through the oil film), however, Y ions react with H2S which is generated by reaction(3)to furnish X crystal nucleus on the interface between water and nucheus, which leads to the formation of the hollow microsphere, the formation process is shown in figure 3-7. Due to the different surface free energy of different crystal surface, the crystal nuclus tends to grow in the same direction. Finally, the Y nano piece will be formed. [54]These nano pieces can absorpt to the interface between water and nucleus. They can also self-assemble into hedegehog shape hollow microsphere. Thereby their surface free energy is reduced, and the most stable structure is formed. |

2Â¥2011-05-06 18:44:22
287685166
½ð³æ (ÕýʽдÊÖ)
- ·ÒëEPI: 14
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 1031.4
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¡¾´ð°¸¡¿Ó¦Öú»ØÌû
wuyao118(½ð±Ò+15): 2011-05-07 20:56:30
| Fig. 3-6c,d are HRTEM graphs selected partly from Y microsphere and nano pieces which can constitutes microsphere, as is shown in the graph, nano pieces pass across each other and a hedgehog shape Y structure is fromed. We can see the crystal lattice stripes clearly from the graph, and its interplaner spacing is measured to be 0.32 nm, which is concordent with the interplaner spacing along to (100) of Y. Nano pieces grow along the directon that is perpendicular (0001) face. |

3Â¥2011-05-07 15:45:21
287685166
½ð³æ (ÕýʽдÊÖ)
- ·ÒëEPI: 14
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 1031.4
- ºì»¨: 1
- Ìû×Ó: 442
- ÔÚÏß: 41.9Сʱ
- ³æºÅ: 1061268
- ×¢²á: 2010-07-20
- ÐÔ±ð: MM
- רҵ: ½ðÊôÓлú»¯Ñ§
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
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wuyao118(½ð±Ò+25): 2011-05-07 20:56:40
sltmac(½ð±Ò+25): »¶Ó³£À´~~ 2011-05-11 17:35:53
wuyao118(½ð±Ò+25): 2011-05-07 20:56:40
sltmac(½ð±Ò+25): »¶Ó³£À´~~ 2011-05-11 17:35:53
|
With the reaction temperature elevating, [Y (en) 2] 2 + is broken down into ethylenediamine and Y ion, then ethylenediamines react with carbon disulfide (2) (CS2 can pass through the oil film), however, Y ions react with H2S which is generated by reaction(3)to furnish X crystal nucleus on the interface between water and nucheus, which leads to the formation of the hollow microsphere, the formation process is shown in figure 3-7. Due to the different surface free energy of different crystal surface, the crystal nuclus tends to grow in the same direction. Finally, the Y nano piece will be formed. [54]These nano pieces can absorpt to the interface between water and nucleus. They can also self-assemble into hedegehog shape hollow microsphere. Thereby their surface free energy is reduced, and the most stable structure is formed. Fig. 3-6c,d are HRTEM graphs selected partly from Y microsphere and nano pieces which can constitutes microsphere, as is shown in the graph, nano pieces pass across each other and a hedgehog shape Y structure is fromed. We can see the crystal lattice stripes clearly from the graph, and its interplaner spacing is measured to be 0.32 nm, which is concordent with the interplaner spacing along to (100) of Y. Nano pieces grow along the directon that is perpendicular (0001) face. |

4Â¥2011-05-07 15:46:40













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