| ²é¿´: 2470 | »Ø¸´: 10 | |||
haidaochiľ³æ (ÕýʽдÊÖ)
|
[ÇóÖú]
ÈÈ·Ö½â·¨ÖÆ±¸ËÄÑõ»¯ÈýÌú
|
|
Çë½Ì´ó¼ÒÒ»¸öÎÊÌ⣺ ÈÈ·Ö½â·¨ÖÆ±¸ËÄÑõ»¯ÈýÌúʱºò£¬ÓÍËáÌúºÍÈܼÁµÄ±ÈÀýÊǶàÉÙ°¡£¬ÎªÊ²Ã´ÎÒÿ´Î×ö³öµÄ´ÅÐÔÁ£×Ó¶¼ÓÐÔÓÖʰ¡¡£¾ÍÊÇxrdÓкܶàÔÓ·å¡£ |
» ÊÕ¼±¾ÌûµÄÌÔÌûר¼ÍƼö
ËÄÑõ»¯ÈýÌúÄÉÃ׿ÅÁ£ÖƱ¸¡¢ÐÞÊμ°°ü¸² |
» ²ÂÄãϲ»¶
ÎÂÖÝ´óѧÍõ¾ê¿ÎÌâ×é2026ÄêÕÐÉú
ÒѾÓÐ10È˻ظ´
ÎÂÖÝ´óѧ2026ÄêÕÐÉú£¨»¯Ñ§¡¢²ÄÁÏ£©
ÒѾÓÐ10È˻ظ´
ÎÞ»ú»¯Ñ§ÂÛÎÄÈóÉ«/·ÒëÔõôÊÕ·Ñ?
ÒѾÓÐ163È˻ظ´
ÕÐÉú¸ºÔð_ԺʿÍŶÓ_ѧÉú¸ß×ÔÓɶȳɳ¤_Éó¤Ñ§ÉúÅàÑø
ÒѾÓÐ5È˻ظ´
ÎÂÖÝ´óѧÕÐÊÕ2026ÄêÈëѧ²©Ê¿Ñо¿Éú£¨»¯Ñ§¡¢²ÄÁÏ¡¢»·¾³£©
ÒѾÓÐ10È˻ظ´
·Ç¾§ºÏ½ð
ÒѾÓÐ2È˻ظ´
ԺʿÍŶÓ-ÿ½ìѧÉú¶¼ÓÅÐã-¸ß×ÔÓɶÈ-ÍŶӷÕΧºÃ
ÒѾÓÐ0È˻ظ´
Çóµ÷¼Á
ÒѾÓÐ2È˻ظ´
»¯¹¤Ñ§Ôº£¨Ñ§ÔºÕýʽµ÷¼ÁȺ+ÁªÏµ·½Ê½£©
ÒѾÓÐ0È˻ظ´
»¯¹¤Ñ§Ôº£¨Ñ§Ôº¹Ù·½Èº£©-ԺʿÍŶÓÕÐÉú-ѧÉú×ÔÓɶȸß-ÅàÑøÄ£Ê½³ÉÊì¸ßЧ
ÒѾÓÐ0È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
ËÄÑõ»¯ÈýÌúÍÅ´ØÖƱ¸
ÒѾÓÐ7È˻ظ´
¡¾Çë½Ì¡¿Ê®ÁùϩΪÈܼÁÈÈ·Ö½â·¨ÖÆ±¸ËÄÑõ»¯ÈýÌú
ÒѾÓÐ4È˻ظ´
¡¾ÇóÖú¡¿ËÄÑõ»¯ÈýÌúÄÉÃ×Á£×ÓµÄÖÆ±¸·½·¨
ÒѾÓÐ15È˻ظ´
¡¾ÇóÖú¡¿Fe3O4µ¥·ÖÉ¢ÄÉÃ׿ÅÁ£µÄÈÈ·Ö½â·¨ÖÆ±¸ÎÊÌâ
ÒѾÓÐ6È˻ظ´
¡¾ÇóÖú¡¿Fe3O4ÖÆ±¸·½·¨±È½Ï
ÒѾÓÐ12È˻ظ´
¡¾Çë½Ì¡¿´ÅÐÔÄÉÃ×ËÄÑõ»¯ÈýÌú¿ÅÁ£µÄXRDΪʲô³ö·åºÜÈõÄØ£¿
ÒѾÓÐ13È˻ظ´
¡¾Çë½Ì¡¿³¬Ë³´ÅÐÔÑõ»¯Ìú
ÒѾÓÐ17È˻ظ´
¡¾ÇóÖú¡¿Çë½Ì¹ØÓÚÖÆ±¸ÄÉÃ×ËÄÑõ»¯ÈýÌúµÄÎÄÏ×£¬Ë®ÈÈ·¨Á£¾¶10nm
ÒѾÓÐ11È˻ظ´
¡¾ÇóÖú¡¿ÈçºÎÇåÏ´Fe3O4ÄÉÃ׿ÅÁ££¿
ÒѾÓÐ34È˻ظ´
¡¾ÇóÖú¡¿ËÄÑõ»¯ÈýÌúºó´¦Àí
ÒѾÓÐ12È˻ظ´
Ñô¹âÎ÷ÆïÊ¿
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 33 (СѧÉú)
- ½ð±Ò: 4536.4
- É¢½ð: 1942
- ºì»¨: 40
- Ìû×Ó: 853
- ÔÚÏß: 1291.9Сʱ
- ³æºÅ: 1287066
- ×¢²á: 2011-05-05
- ÐÔ±ð: GG
- רҵ: ÉúÎïÎÞ»ú»¯Ñ§
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
haidaochi(½ð±Ò+2): 2011-05-07 08:19:19
haidaochi(½ð±Ò+1): 2011-05-07 23:18:04
haidaochi(½ð±Ò+1): 2011-05-17 09:35:48
haidaochi(½ð±Ò+3): 2011-05-24 08:50:01
haidaochi(½ð±Ò+1): 2011-05-07 23:18:04
haidaochi(½ð±Ò+1): 2011-05-17 09:35:48
haidaochi(½ð±Ò+3): 2011-05-24 08:50:01
|
²Î¿¼ÕâÆªÎÄÏ×ÊÔÊÔ Ultra-large-scale syntheses of monodisperse nanocrystals JONGNAM PARK1, KWANGJIN AN1, YOSUN HWANG2, JE-GEUN PARK2, HAN-JIN NOH3, JAE-YOUNG KIM3, JAE-HOON PARK3, NONG-MOON HWANG4 AND TAEGHWAN HYEON1* 1National Creative Research Center for Oxide Nanocrystalline Materials and School of Chemical Engineering, Seoul National University, Seoul 151-744, Korea 2Department of Physics and Institute of Basic Science, Sungkyunkwan University, Suwon 440-746, Korea 3Department of Physics and Pohang Light Source, Pohang University of Science and Technology, Pohang 790-784, Korea 4School of Materials Science & Engineering and Nano-Systems Institute (NSI-NCRC), Seoul National University, Seoul 151-744, Korea *e-mail: thyeon@plaza.snu.ac.kr ÏÂÃæÊǺϳɹý³Ì SYNTHESIS OF IRON¨COLEATE COMPLEX The metal¨Coleate complex was prepared by reacting metal chlorides and sodium oleate. In a typical synthesis of iron¨Coleate complex, 10.8 g of iron chloride (FeCl3¡¤6H2O, 40 mmol, Aldrich, 98%) and 36.5 g of sodium oleate (120 mmol, TCI, 95%) was dissolved in a mixture solvent composed of 80 ml ethanol, 60 ml distilled water and 140 ml hexane. The resulting solution was heated to 70 ¡ãC and kept at that temperature for four hours. When the reaction was completed, the upper organic layer containing the iron¨Coleate complex was washed three times with 30 ml distilled water in a separatory funnel. After washing, hexane was evaporated off, resulting in iron¨Coleate complex in a waxy solid form. SYNTHESIS OF IRON OXIDE NANOCRYSTALS The following is a typical synthetic procedure for monodisperse iron oxide (magnetite) nanocrystals with a particle size of 12 nm. 36 g (40 mmol) of the iron-oleate complex synthesized as described above and 5.7 g of oleic acid (20 mmol, Aldrich, 90%) were dissolved in 200 g of 1-octadecene (Aldrich, 90%) at room temperature. The reaction mixture was heated to 320 ¡ãC with a constant heating rate of 3.3 ¡ãC min¨C1, and then kept at that temperature for 30 min. When the reaction temperature reached 320 ¡ãC, a severe reaction occurred and the initial transparent solution became turbid and brownish black. The resulting solution containing the nanocrystals was then cooled to room temperature, and 500 ml of ethanol was added to the solution to precipitate the nanocrystals. The nanocrystals were separated by centrifugation. |
2Â¥2011-05-06 23:49:32
Ñô¹âÎ÷ÆïÊ¿
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 33 (СѧÉú)
- ½ð±Ò: 4536.4
- É¢½ð: 1942
- ºì»¨: 40
- Ìû×Ó: 853
- ÔÚÏß: 1291.9Сʱ
- ³æºÅ: 1287066
- ×¢²á: 2011-05-05
- ÐÔ±ð: GG
- רҵ: ÉúÎïÎÞ»ú»¯Ñ§
¡ï
nuaajsh(½ð±Ò+1): ¹ÄÀø½»Á÷ 2011-06-16 23:02:39
nuaajsh(½ð±Ò+1): ¹ÄÀø½»Á÷ 2011-06-16 23:02:39
| ºÜ¶àƪºÏ³ÉÓÍËáÌú¶¼ÊDzÉÓõÄÕâ¸ö·½·¨£¬ÎÒµÚÒ»²½ÓõÄÊÇÉÕ±£¬²»¹ýºÏ³ÉµÄÓÍËáÌúÊǺìרɫµÄ¡¡ |
3Â¥2011-05-06 23:51:15
haidaochi
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 4212.5
- É¢½ð: 16
- ºì»¨: 2
- Ìû×Ó: 367
- ÔÚÏß: 166.3Сʱ
- ³æºÅ: 829665
- ×¢²á: 2009-08-17
- רҵ: ÎÞ»úÄÉÃ×»¯Ñ§
4Â¥2011-05-06 23:59:22
haidaochi
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 4212.5
- É¢½ð: 16
- ºì»¨: 2
- Ìû×Ó: 367
- ÔÚÏß: 166.3Сʱ
- ³æºÅ: 829665
- ×¢²á: 2009-08-17
- רҵ: ÎÞ»úÄÉÃ×»¯Ñ§
5Â¥2011-05-06 23:59:52
Ñô¹âÎ÷ÆïÊ¿
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 33 (СѧÉú)
- ½ð±Ò: 4536.4
- É¢½ð: 1942
- ºì»¨: 40
- Ìû×Ó: 853
- ÔÚÏß: 1291.9Сʱ
- ³æºÅ: 1287066
- ×¢²á: 2011-05-05
- ÐÔ±ð: GG
- רҵ: ÉúÎïÎÞ»ú»¯Ñ§
6Â¥2011-05-07 00:15:02
Ñô¹âÎ÷ÆïÊ¿
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 33 (СѧÉú)
- ½ð±Ò: 4536.4
- É¢½ð: 1942
- ºì»¨: 40
- Ìû×Ó: 853
- ÔÚÏß: 1291.9Сʱ
- ³æºÅ: 1287066
- ×¢²á: 2011-05-05
- ÐÔ±ð: GG
- רҵ: ÉúÎïÎÞ»ú»¯Ñ§
¡ï
nuaajsh(½ð±Ò+1): ¹ÄÀø½»Á÷ 2011-06-16 23:02:59
nuaajsh(½ð±Ò+1): ¹ÄÀø½»Á÷ 2011-06-16 23:02:59
|
http://muchong.com/bbs/viewthread.php?tid=2879676&fpage=1 ÕâÀïÒ²ÓиöÌÖÂÛÄãÎÊÌâµÄÌû×Ó ¿ÉÒÔ¿´Ï |
7Â¥2011-05-07 00:16:34
greattom365
ľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 6 (Ó×¶ùÔ°)
- ½ð±Ò: 3967.9
- ºì»¨: 4
- Ìû×Ó: 2413
- ÔÚÏß: 99.2Сʱ
- ³æºÅ: 1287485
- ×¢²á: 2011-05-06
- ÐÔ±ð: GG
- רҵ: Öйú¹Å´úÊ·

8Â¥2011-05-07 00:51:11
refnew
ר¼Ò¹ËÎÊ (ÖªÃû×÷¼Ò)
-

ר¼Ò¾Ñé: +181 - MN-EPI: 4
- Ó¦Öú: 678 (²©Ê¿)
- ¹ó±ö: 0.577
- ½ð±Ò: 9465.7
- É¢½ð: 229
- ºì»¨: 54
- Ìû×Ó: 6391
- ÔÚÏß: 1613.5Сʱ
- ³æºÅ: 33447
- ×¢²á: 2003-12-31
- ÐÔ±ð: GG
- רҵ: ÄÉÃ×ÉúÎïѧ
- ¹ÜϽ: ΢Ã׺ÍÄÉÃ×
9Â¥2011-05-07 09:42:25
haidaochi
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 4212.5
- É¢½ð: 16
- ºì»¨: 2
- Ìû×Ó: 367
- ÔÚÏß: 166.3Сʱ
- ³æºÅ: 829665
- ×¢²á: 2009-08-17
- רҵ: ÎÞ»úÄÉÃ×»¯Ñ§
10Â¥2011-05-07 11:42:25













»Ø¸´´ËÂ¥