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ÖØ¸´ÎÄÏ×One-step synthesis of monodisperse, water-soluble ultra-small Fe3O4 nanoparticles for potential bio-application,Nanoscale, 2013, 5, 2133 ÎÄÏײ½ÖèΪIn a typical synthesis of 3.1 nm Fe3O4 nanoparticles, anhydrous FeCl3 (4 mmol) was first vigorously mixed with 40 mL of DEG to form a clear solution. Then, Na3Cit (1.6 mmol) was added and the mixture was heated at 80 ¡ãC with stirring to form a clear solution. After dissolving anhydrous NaOAc (12.0 mmol) in the above solution, the mixture was transferred into a Teflon-lined stainless-steel autoclave (100 mL capacity) and sealed in air. Following this, the autoclave was kept at 200 ¡ãC for 6 h. After being allowed to cool naturally to room temperature, the black products were collected by centrifugation (12 000 rpm, 30 min)and washed with ethanol three times. ¾ÍÊǰÑÎÞË®ÂÈ»¯ÌúÈܽâÓÚDEGÖÐÐγÉÇåÒº£¬È»ºó¼ÓÈëÄûÃÊËáÄÆÖÃÓÚ80¡ãCÖÐˮԡÖÁ³ÎÇ壬×îºó¼ÓÈëÒÒËáÄÆ£¬»ìºÏ¾ùÔÈ×ªÒÆÖÁ·´Ó¦¸ªÖÐ200¡ãC·´Ó¦6h¡£¡£¡£ÎÒÃÇʵÑéÊÒûÓÐÎÞË®µÄÂÈ»¯Ìú£¬ÎÒ¾ÍÓÃÁùË®µÄÀ´ÊÔÊÔ£¬½á¹ûÄÜÈܽ⣬µ«ÊÇÄûÃÊËáÄÆ¾ÍÈܽⲻÁË£¬80¡ãC½Á°è1h¶¼ÈܽⲻÁË£¬³¬Éù¹ýҲû±ä»¯£¬¼ÓÈëÒÒËáÄÆºó£¬ÒÒËáÄÆÈܽâÁËÒ»²¿·Ö¡£¡£¡£ÏÖÔÚÓ¦¸ÃÔõô°ì°¡£¿×ö²»ºÃµÚÒ»²½¾Íû·¨×ªÒƽø·´Ó¦¸ªÁ˶¼¡£¡£¡£¹òÇó´óÉñ°ïæ~~~ |
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