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ÏëÇë½Ìһϸ÷λÓÐûÓÐË¿´¹ýÕâÆªÎÄÏ×Preparation, Characterization, and Optical Properties of Gold, Silver, and Gold−Silver Alloy Nanoshells Having Silica Cores£¨http://dx.doi.org/10.1021/la8016497£©¡£ÀïÃæÉæ¼°µ½K-AgÉú³¤ÒºµÄÅäÖÆ¡£¾ÍÊǰÑAgNO3¼Óµ½K2CO3ÈÜÒºÖУ¨ÔÎÄ£ºK-Gold, K-Silver, and K-Alloy Preparation. A potassium containing basic solution of gold salt (K-gold solution) was prepared by adding 0.05 g of potassium carbonate (K2CO3) to 200 mL of water, stirring for 15 min to dissolve the K2CO3 completely, and adding 4 mL of 1 wt % HAuCl4 ¡¤H2O solution. The color of the mixture changed from yellow to colorless within 40 min.We prepared K-silver solutions (using 2 mL of 1 wt % AgNO3) and K-alloy solutions (using 1 mL of 1 wt % AgNO3 + 2 mL of 1 wt %HAuCl4 ¡¤H2O) using analogous procedures.£©½ñÌìÎÒ×öһϣ¬·¢ÏÖ°ÑAgNO3¼ÓÈëK2CO3ÈÜҺ˲¼äÈÜÒº±ä»Æ£¬ÏñÊÇÈéÒº£¬Óü¤¹â±ÊÕÕ¹ý·¢ÏÖÓйâÊø£¬Õâ¾Í±íÃ÷Éú³ÉÁËÄÉÃ×Á£×Ó°¡£¬×ÏÍâÉÏÔÚ400nm×óÓÒÓиöС·å¡£¸÷λ´óÏÀ°ïæ¿´¿´ÊÇʲôÎÊÌâ°¡£¿ |