{"id":224522,"date":"2021-07-14T06:01:10","date_gmt":"2021-07-13T22:01:10","guid":{"rendered":"\/\/m.iemloyee.com\/?p=224522"},"modified":"2021-07-13T22:01:35","modified_gmt":"2021-07-13T14:01:35","slug":"angew-chem-int-ed-%ef%bc%9a%e9%87%91%e7%ba%b3%e7%b1%b3%e6%99%b6%e4%b8%8a%e9%87%91%e5%b2%9b%e7%9a%84%e7%a7%8d%e5%ad%90%e4%bb%8b%e5%af%bc%e7%94%9f%e9%95%bf%e7%9a%84%e8%a1%a8%e9%9d%a2%e5%b7%a5","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=224522","title":{"rendered":"Angew. Chem. Int. Ed.\uff1a\u91d1\u7eb3\u7c73\u6676\u4e0a\u91d1\u5c9b\u7684\u79cd\u5b50\u4ecb\u5bfc\u751f\u957f\u7684\u8868\u9762\u5de5\u7a0b\u548c\u53d7\u63a7\u719f\u5316"},"content":{"rendered":"
\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n \u5728\u5176\u9884\u5b58\u7684\u201c\u79cd\u5b50\u201d\u4e0a\u8bbe\u8ba1\u7b49\u79bb\u5b50\u4f53\u91d1\u5c5e\uff08Ag \u548c Au\uff09\u7684\u6210\u6838\u548c\u751f\u957f\u6709\u671b\u4ea7\u751f\u5177\u6709\u975e\u5e38\u89c4\u5f62\u6001\u548c\u7b49\u79bb\u5b50\u4f53\u7279\u6027\u7684\u7eb3\u7c73\u7ed3\u6784\uff0c\u8fd9\u4e9b\u7eb3\u7c73\u7ed3\u6784\u53ef\u80fd\u4f1a\u5728\u4f20\u611f\u3001\u50ac\u5316\u548c\u5bbd\u5e26\u80fd\u91cf\u6536\u96c6\u4e2d\u65b9\u9762\u6709\u72ec\u7279\u7684\u5e94\u7528\u524d\u666f\u3002\u5178\u578b\u7684\u201c\u79cd\u5b50\u201d\u4ecb\u5bfc\u751f\u957f\u8fc7\u7a0b\u5229\u7528\u6c89\u79ef\u91d1\u5c5e\u548c\u79cd\u5b50\u4e4b\u95f4\u7684\u5b8c\u7f8e\u6676\u683c\u5339\u914d\u6765\u8bf1\u5bfc\u5171\u5f62\u6d82\u5c42\uff0c\u5bfc\u81f4\u7b80\u5355\u7684\u5c3a\u5bf8\u589e\u52a0\uff08\u4f8b\u5982 Au \u4e0a\u7684 Au\uff09\u6216\u6838\u58f3\u7ed3\u6784\u7684\u5f62\u6210\uff08\u4f8b\u5982\uff0cAg \u4e0a\u7684Au) \u5177\u6709\u6709\u9650\u7684\u5f62\u6001\u53d8\u5316\u3002\u5728\u8fd9\u9879\u5de5\u4f5c\u4e2d\u5f15\u5165\u5177\u6709\u76f8\u5f53\u5927\u7684\u6676\u683c\u5931\u914d\u7684\u91d1\u5c5e\u8584\u5c42\u53ef\u4ee5\u6709\u6548\u5730\u8bf1\u5bfc Au \u7eb3\u7c73\u6676\u79cd\u4e0a\u7684 Au \u5c9b\u7684\u6210\u6838\u3002\u901a\u8fc7\u63a7\u5236\u79cd\u5b50\u548c\u6c89\u79ef\u6750\u6599\u4e4b\u95f4\u7684\u754c\u9762\u80fd\u3001\u6c27\u5316\u5ea6\u548c\u91d1\u5c5e\u524d\u4f53\u7684\u8868\u9762\u6269\u6563\uff0c\u53ef\u4ee5\u8c03\u8282\u79cd\u5b50\u4e0a\u5c9b\u7684\u6570\u91cf\u5e76\u4ea7\u751f\u590d\u6742\u7684\u91d1\u7eb3\u7c73\u7ed3\u6784\uff0c\u5176\u5f62\u6001\u4ece\u6838-\u536b\u661f\u7ed3\u6784\u5230\u53ef\u8c03\u56db\u805a\u4f53\u3001\u4e09\u805a\u4f53\u548c\u4e8c\u805a\u4f53\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n \u8fd1\u65e5\uff0c\u7f8e\u56fd\u52a0\u5dde\u5927\u5b66\u6cb3\u6ee8\u5206\u6821<\/strong>\u7684\u6bb7\u4e9a\u4e1c<\/strong>\u6559\u6388\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u7b49\u4eba\uff0c\u5728\u00a0Angew. Chem.<\/em><\/strong> Int. Ed.<\/strong><\/em>\u4e0a\u53d1\u8868\u4e86\u4e00\u7bc7\u9898\u4e3a \u201cSurface Engineering and Controlled Ripening for Seed-Mediated Growth of Au Islands on Au Nanocrystals<\/strong>\u201d \u7684\u8bba\u6587\u3002\u5f15\u5165\u539f\u5b50\u7ea7\u7684\u6676\u683c\u5931\u914d\u91d1\u5c5e\u5c42\u53ef\u4ee5\u6709\u6548\u5730\u8bf1\u5bfc Au \u6676\u79cd\u8868\u9762\u4e0a Au \u7684\u5c9b\u72b6\u751f\u957f\u3002\u901a\u8fc7\u63a7\u5236\u5c9b\u7684\u6210\u719f\uff0c\u6587\u7ae0\u8fdb\u4e00\u6b65\u8bc1\u660e\u4e86\u5bf9\u5c9b\u6570\u91cf\u7684\u65b9\u4fbf\u63a7\u5236\uff0c\u8fd9\u4f7f\u5f97\u53ef\u4ee5\u5b9a\u5236\u5408\u6210\u5177\u6709\u660e\u786e\u5b9a\u4e49\u7684\u5f62\u6001\u7684\u4e8c\u7ea7\u7ed3\u6784\uff0c\u5305\u62ec\u6838\u5fc3\u536b\u661f\u3001\u56db\u805a\u4f53\u3001\u4e09\u805a\u4f53\u548c\u4e8c\u805a\u4f53\u3002\u4e0e Au \u5177\u6709 4.08% \u6676\u683c\u5931\u914d\u7684 Pt \u6c89\u79ef\u5728 Au \u6676\u79cd\u7684\u8868\u9762\u4ee5\u589e\u52a0\u754c\u9762\u80fd\u5e76\u8bf1\u5bfc\u968f\u540e\u6c89\u79ef\u7684 Au \u7684\u5c9b\u72b6\u751f\u957f\u3002\u901a\u8fc7\u5728\u6676\u79cd\u751f\u957f\u8fc7\u7a0b\u4e2d\u8c03\u6574 Pt\/Au \u7684\u6469\u5c14\u6bd4\uff0c\u53ef\u4ee5\u7b80\u5355\u5730\u8c03\u6574\u754c\u9762\u80fd\u3002\u5728\u79cd\u5b50\u751f\u957f\u8fc7\u7a0b\u4e2d\u91c7\u7528\u53d7\u63a7\u7684\u6c27\u5316\u719f\u5316\u8fc7\u7a0b\u6765\u4fee\u6539\u5c9b\u7684\u6570\u91cf\u5e76\u786e\u5b9a\u6700\u7ec8\u7ed3\u6784\u3002\u6c27\u5316\u719f\u5316\u7684\u7a0b\u5ea6\u7531 I–<\/sup> \u7684\u91cf\u63a7\u5236\uff0cI–<\/sup>\u7528\u4f5c\u914d\u4f4d\u4f53\u4ee5\u4fc3\u8fdb\u4e0d\u7a33\u5b9a\u5c9b\u7684\u6c27\u5316\u8680\u523b\u3002\u7531\u4e8e\u4ec5\u5f15\u5165\u4e86\u8584\u8584\u7684 Pt \u5c42\uff0c\u56e0\u6b64\u53ef\u4ee5\u6839\u636e\u6700\u7ec8\u7ed3\u6784\u7684\u5f62\u6001\u5f88\u597d\u5730\u4fdd\u7559\u548c\u5b8c\u5168\u8c03\u6574 Au \u7eb3\u7c73\u7ed3\u6784\u7684\u7b49\u79bb\u5b50\u4f53\u7279\u6027\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe<\/strong>1 <\/strong>\u7eb3\u7c73\u7c92\u5b50\u5f62\u8c8c<\/strong><\/p>\n (a) AuPt-0.1 \u7eb3\u7c73\u7c92\u5b50\uff0c\u548c AuPt-0.1-Au \u7eb3\u7c73\u7c92\u5b50 (e) \u7684 TEM \u56fe\u50cf\u3002<\/p>\n (b, c) AuPt-0.1 \u7eb3\u7c73\u7c92\u5b50\u548c(f, g) AuPt-0.1-Au \u7eb3\u7c73\u7c92\u5b50\u00a0 \u7684 HADDF-STEM \u56fe\u50cf\u548c EDS \u5143\u7d20\u6620\u5c04\u3002EDS \u7ebf\u626b\u63cf\u663e\u793a Pt\uff08\u7ea2\u7ebf\uff09\u5728\u5355\u4e2a AuPt-0.1 \u7eb3\u7c73\u9897\u7c92\uff08d\uff09\u548c AuPt-0.1-Au \u7eb3\u7c73\u9897\u7c92\uff08h\uff09\u7684 Au\uff08\u9ed1\u8272\uff09\u8868\u9762\u4e0a\u7684\u5206\u5e03\uff1b<\/p>\n i) AuPt-0.1 \u4e0a\u5355\u4e2a Au \u5c9b\u7684 HRTEM\uff1b<\/p>\n j) AuPt-0.1 \u7eb3\u7c73\u9897\u7c92\u548c AuPt-0.1-Au \u7eb3\u7c73\u9897\u7c92\u7684\u7d2b\u5916-\u53ef\u89c1\u5149\u8c31\u3002<\/p>\n \u6bd4\u4f8b\u5c3a\u5728 (a\u3001b\u3001e \u548c f) \u4e2d\u4e3a 20 nm\uff0c\u5728 EDS \u5143\u7d20\u6620\u5c04\u4e2d\u4e3a 10 nm\uff0c\u5728 (i) \u4e2d\u4e3a 2 nm\u3002<\/p>\n \u56fe<\/strong>2<\/strong> \u4f7f\u7528\u589e\u52a0\u91cf\u7684<\/strong> HAuCl4<\/sub> <\/strong>\u5408\u6210\u7684<\/strong> AuPt-0.1-Au <\/strong>\u4e8c\u805a\u4f53\u7684<\/strong> TEM <\/strong>\u56fe\u50cf<\/strong><\/p>\n \u751f\u957f\u6eb6\u6db2\u548c\u79cd\u5b50\u4e2d\u91d1\u7684\u6469\u5c14\u6bd4\u4e3a\uff1aa) 0.25\uff1bb) 0.5\uff1bc) 1 \uff1bd) 1.5\uff1b<\/p>\n e) (b) \u4e2d\u6837\u54c1\u7684\u5927\u8303\u56f4 TEM \u56fe\u50cf\uff1b<\/p>\n f\uff09AuPt-0.1-Au\u4e8c\u805a\u4f53\u7684HADDF-STEM\u56fe\u50cf\u548cEDS\u5143\u7d20\u6620\u5c04\uff08\uff08b\uff09\u4e2d\u7684\u6837\u54c1\uff09;<\/p>\n g) a-d \u4e2d AuPt-0.1-Au \u4e8c\u805a\u4f53\u7684\u7d2b\u5916-\u53ef\u89c1\u5149\u8c31\u3002<\/p>\n (a-d),(e) \u548c (f) \u4e2d\u7684\u6bd4\u4f8b\u5c3a\u4e3a 20\u300150 \u548c 10 nm\u3002<\/p>\n \u56fe<\/strong>3 AuPt-0.1 <\/strong>\u7eb3\u7c73\u7403\u4e0a\u7684\u7403\u5f62\u7eb3\u7c73\u7c92\u5b50\u7684\u6570\u91cf\u968f\u7740<\/strong> KI\/HAuCl4<\/sub> <\/strong>\u6469\u5c14\u6bd4\u7684\u589e\u52a0\u800c\u53d8\u5316\uff1a<\/strong><\/p>\n \u56db\u805a\u4f53 (f \u548c g)\u3001\u4e09\u805a\u4f53 (h \u548c i) \u548c\u4e8c\u805a\u4f53 (j) \u7684\u5178\u578b TEM \u56fe\u50cf\uff1b<\/p>\n k) \u4e0d\u540cKI\/HAuCl4<\/sub>\u6bd4\u4f8b\u7684\u4ea7\u7269\u5206\u5e03\u7684\u7edf\u8ba1\u5206\u6790\uff1b<\/p>\n l\uff09Au\u7eb3\u7c73\u7ed3\u6784\u7684UV-Vis\u6d88\u5149\u5149\u8c31\uff0c\u5bf9\u5e94\u4e8e\uff08a-e\uff09\uff1b<\/p>\n m) \u914d\u4f53\u8f85\u52a9\u6c27\u5316\u6210\u719f\u7684\u793a\u610f\u56fe\u3002<\/p>\n \u6bd4\u4f8b\u5c3a\u5728 (a-e) \u4e2d\u4e3a 50 nm\uff0c\u5728 (f-j) \u4e2d\u4e3a 10 nm\u3002<\/p>\n \u56fe<\/strong>4<\/strong> AuPt-x <\/strong>\u7eb3\u7c73\u7403\u4e0a\u7684\u7403\u5f62\u7eb3\u7c73\u7c92\u5b50\u7684\u6570\u91cf\u968f\u7740\u79cd\u5b50\u4e2d<\/strong> Pt\/Au <\/strong>\u6469\u5c14\u6bd4\u7684\u589e\u52a0\u800c\u53d8\u5316<\/strong><\/p>\n a) 0.025\uff1bb) 0.075\uff1bc) 0.1\uff1bd) 0.25\uff1b<\/p>\n e\uff09Au\u7eb3\u7c73\u7ed3\u6784\u7684UV-Vis\u6d88\u5149\u5149\u8c31\uff0c\u5bf9\u5e94\u4e8e\uff08a-d\uff09\uff1b<\/p>\n f) \u79cd\u5b50\u4e2d\u4e0d\u540c Pt\/Au \u6bd4\u7684\u4ea7\u7269\u5206\u5e03\u7684\u7edf\u8ba1\u5206\u6790\u3002<\/p>\n \u6240\u6709\u6837\u54c1\u4e2dKI\/Au\u7684\u6469\u5c14\u6bd4=10\u3002(a-d) \u4e2d\u7684\u6bd4\u4f8b\u5c3a\u4e3a 20 nm\u3002<\/p>\n \u56fe<\/strong>5 <\/strong>AuPt-0.1 <\/strong>\u7eb3\u7c73\u7403\u4e0a\u7684\u7403\u5f62\u7eb3\u7c73\u7c92\u5b50\u6570\u91cf\u968f\u751f\u957f\u6eb6\u6db2\u4e2d<\/strong> PVP <\/strong>\u6d53\u5ea6\u7684\u589e\u52a0\u800c\u53d8\u5316<\/strong><\/p>\n a\uff0cb) 0.078\uff1bc) 0.2\uff1bd) 2\uff1be) 4 wt\uff05\uff1b<\/p>\n f\uff09\u7b49\u79bb\u5b50\u4f53\u7eb3\u7c73\u7ed3\u6784\u7684\u7d2b\u5916-\u53ef\u89c1\u6d88\u5149\u5149\u8c31\uff0c\u5bf9\u5e94\u4e8e\uff08a-e\uff09\u3002<\/p>\n \u6240\u6709\u6837\u54c1\u4e2dKI\/Au\u7684\u6469\u5c14\u6bd4=20\u3002<\/p>\n \u6bd4\u4f8b\u5c3a\u5728 (a\u3001c\u3001d \u548c e) \u4e2d\u4e3a 50 nm\uff0c\u5728(b) \u4e2d\u4e3a 20 nm\uff0c\u5728 (e) \u7684\u63d2\u56fe\u4e2d\u4e3a 2 nm\u3002\u767d\u8272\u7bad\u5934\u8868\u793a\u7eb3\u7c73\u7ed3\u6784\u9888\u90e8\u7684\u5bbd\u5ea6\u3002<\/p>\n \u00a0<\/strong>\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n \u672c\u6587\u5f00\u53d1\u4e86\u4e00\u79cd\u79cd\u5b50\u4ecb\u5bfc\u7684\u7528\u4e8e\u5728\u7403\u5f62 Au \u79cd\u5b50\u4e0a\u4ea7\u751f Au \u7684\u4e8c\u7ea7\u7ed3\u6784\u7684\u751f\u957f\u7b56\u7565\u3002\u5173\u952e\u662f\u901a\u8fc7\u4e00\u5c42\u8584\u8584\u7684 Pt \u521b\u5efa\u6676\u683c\u5931\u914d\u7684\u79cd\u5b50\u8868\u9762\uff0c\u4ee5\u5728\u968f\u540e\u7684 Au \u6c89\u79ef\u8fc7\u7a0b\u4e2d\u8bf1\u5bfc\u5c9b\u72b6\u751f\u957f\u3002\u6bcf\u4e2a\u79cd\u5b50\u4e0a\u7684\u5c9b\u6570\u53ef\u4ee5\u901a\u8fc7\u64cd\u7eb5\u4e09\u4e2a\u5173\u952e\u53c2\u6570\u6765\u63a7\u5236\uff1a\u914d\u4f53\u8f85\u52a9\u6c27\u5316\u719f\u5316\u5ea6\u548c\u901a\u8fc7\u6dfb\u52a0\u66f4\u591a Pt \u6765\u589e\u52a0\u8868\u9762\u5931\u914d\uff0c\u4ee5\u9a71\u52a8\u5177\u6709\u66f4\u5c11\u5c9b\u7684\u7eb3\u7c73\u7ed3\u6784\u7684\u5f62\u6210\uff0c\u540c\u65f6\u9650\u5236\u805a\u5408\u7269\u914d\u4f53\u5bf9\u91d1\u5c5e\u539f\u5b50\u7684\u8868\u9762\u6269\u6563\u53ef\u4ee5\u5c40\u90e8\u5316\u6c27\u5316\u719f\u5316\u4ece\u800c\u4fc3\u8fdb\u66f4\u591a\u5c9b\u7684\u5f62\u6210\u3002\u5982\u6b64\u7cbe\u51c6\u7684\u63a7\u5236\u4f7f\u5f97\u53ef\u4ee5\u65b9\u4fbf\u5730\u751f\u4ea7\u5404\u79cd\u5f62\u6001\u7684\u4e8c\u7ea7\u7ed3\u6784\uff0c\u5305\u62ec\u6838\u5fc3-\u536b\u661f\u7ed3\u6784\u3001\u4e8c\u805a\u4f53\u3001\u4e09\u805a\u4f53\u548c\u56db\u805a\u4f53\u3002\u7279\u522b\u662f\uff0c\u8be5\u7b56\u7565\u5141\u8bb8\u5408\u6210\u7c92\u5f84\u53ef\u63a7\u3001\u4ea7\u7387\u9ad8\u3001\u7ed3\u6784\u660e\u786e\u548c\u72ec\u7279\u7684\u5149\u5b66\u6027\u8d28\u7684 Au \u4e8c\u805a\u4f53\uff0c\u8fd9\u662f\u4ee5\u524d\u4ece\u672a\u62a5\u9053\u8fc7\u7684\u3002<\/p>\n <\/p>\n<\/p>\n
<\/p>\n
a) 2\uff1b b) 5\uff1b c) 7.5\uff1b d) 20\uff1be) 50\uff1b<\/p>\n
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