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Synthesis of silica nanoparticles
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1. Introduction

-Silica nano particle ÀÇ °úÇÐÀûÀÎ ¿¬±¸¿¡¼­ÀÇ È°¿ëÀº ´Ù¾çÇÏ´Ù. È¿¼Ò, ¾àÇÐ, ÀüÀÚ±âÇÐ, ¹ÙÀÌ¿À ¼¾¼­, ¹ÝµµÃ¼ µîÀÇ ´Ù¾çÇÑ ºÎ¹®¿¡¼­ Ȱ¿ëÀ» ÇÒ ¼ö ÀÖ´Ù. »ê¾÷ÀûÀÎ Ãø¸é¿¡¼­ Á¢±ÙÇßÀ» ¶§, ÀÌ nano particle¿¡ À־ °¡Àå Áß¿äÇÑ ºÎºÐÀº ¾ó¸¶³ª ±ÕÀÏÇÑ Å©±â¸¦ ¾ó¸¶³ª ºü¸£°Ô ÇÕ¼ºÇÏ´À³Ä ÀÌ´Ù.
silica nano particleÀ» ÇÕ¼ºÇÏ´Â µ¥ ÀÖ¾î º¯¼ö´Â ¿©·¯ °¡ÁöÀÌ´Ù. particleÀ» ÇÕ¼ºÇϱâ À§ÇÑ reagentµéÀÇ ³óµµ, ¶Ç´Â ÇÕ¼ºÇÏ´Â °úÁ¤ÀÇ ¿Âµµ, ±×¸®°í reagent¸¦ ¼¯¾î³õ´Â ½Ã°£. À̹ø ½ÇÇè¿¡¼­ÀÇ º¯¼ö´Â ½Ã°£À¸·Î Àâ¾Ò´Ù. ±× ÀÌÀ¯´Â ÀÌ¹Ì ¼±ÇàµÈ ½ÇÇè¿¡¼­ À¯ÀÏÇÏ°Ô ÁÖ¾îÁöÁö ¾ÊÀº º¯¼ö°¡ ½Ã°£À̾ú±â ¶§¹®ÀÌ´Ù. ÁÖ¾îÁø ³í¹®¿¡¼­ °¡Àå particleÀÌ ¼±¸íÇÏ°Ô ÂïÈù ½ÇÇèÀÇ ³óµµ¸¦ ¼±ÅÃÇÏ¿© reagent¸¦ ¼¯¾î ³õ´Â ½Ã°£À» ´Ù¸£°Ô ÇÏ¿© ½ÇÇèÀ» ÁøÇàÇÏ¿´´Ù.
¼±ÅÃÇÑ ½ÇÇèÀº Exp no 6. ¿´´Ù. Ethanol (8 mol/L), TEOS (0.11 mol/L), (14 mol/L), ±×¸®°í ¹°À» Æ÷ÇÔÇÑ ÃÑ ¿ë¾×ÀÇ ¾çÀº 20ml°¡ µÇµµ·Ï ¹°ÀÇ ¾çÀ» Á¶ÀýÀ» Çß´Ù. ±×¸®°í Á¶ÀÛº¯ÀÎÀÎ ½Ã°£ÀÇ Á¶ÀýÀº 5¡¦(»ý·«)

2. ½ÇÇè ÀÌ·Ð

3. Materials and Method.

¨ç ¸ÕÀú Ethanol°ú water¸¦ ¼¯´Â´Ù. ±×¸®°í Àá±ñ strringÀ» ÇÑ ÈÄ

¨è 10ºÐÀÌ Áö³ª¸é TEOS¸¦ ÷°¡ÇÑ ÈÄ ´Ù½Ã sonication bath¿¡¼­ 5ºÐµ¿¾È sonicationÀ» ÇÑ´Ù.

¨é 5ºÐ ÈÄ bath¿¡¼­ ²¨³»¾î 1ml¸¦ ÃßÃâÇÑ ÈÄ ³ª¸ÓÁö ¿ë¾×Àº ´Ù½Ã bath¿¡¼­ sonicationÀ» Çϰí ÃßÃâÇÑ ¿ë¾×Àº conical tube¿¡ ´ã¾Æ centrifugingÀ» Çϴµ¥ ÀÌ ¶§ ¾à 1ºÐ Á¤µµ°¡ Áö³ª¸é tube¿¡ ÇϾá ħÀü¹°ÀÌ »ý±ä´Ù. ÀÌ Ä§Àü¹°ÀÌ ¹Ù·Î silica nano particleÀÌ´Ù.

¨ê »óÃþ¾×À» µû¶ó³½ ÈÄ Ä§Àü¹°À» ±Ü¾î³»¾î °Å¸§Á¾ÀÌÀ§¿¡ ¿Ã¸°´Ù. ±×¸®°í ¿µ¿ª°ú ½Ã°£À» Ç¥½ÃÇÑ´Ù.

¨ë ¨é~¨ê°úÁ¤À» 5ºÐ, 10ºÐ, 15ºÐ, 20ºÐ, 30ºÐ, 40ºÐ ¸¶´Ù ¹Ýº¹À» ÇÑ´Ù. À̶§ ½Ã°£Àº TEOS¸¦ ÷°¡ÇÑ ÈÄ Áö³­ ½Ã°£ÀÌ´Ù.

¨ì °Å¸§Á¾ÀÌ¿¡ ¿Ã·ÁÁø particleÀ» ¿Àºì¿¡ ³Ö¾î °ÇÁ¶½ÃŲ´Ù. ÀÌ ¶§ ³Ê¹« ¿À·§µ¿¾È °ÇÁ¶½ÃŰÁö ¾Êµµ·Ï ÇÑ´Ù.

¨í °ÇÁ¶°¡ ³¡³ª¸é gold ion coatingÀ» Çϰí SEM ÃÔ¿µÀ» ÇÑ´Ù.

4. Result




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Date : 2013-01-02
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