{"id":109647,"date":"2017-11-02T06:30:38","date_gmt":"2017-11-01T22:30:38","guid":{"rendered":"\/\/m.iemloyee.com\/?p=109647"},"modified":"2017-11-02T09:47:10","modified_gmt":"2017-11-02T01:47:10","slug":"%e4%b8%ad%e5%9b%bd%e7%a7%91%e5%a4%a7%e8%b7%af%e5%86%9b%e5%b2%adnature%e5%ad%90%e5%88%8a%ef%bc%9a%e5%9c%a8%e7%9f%b3%e5%a2%a8%e7%83%af%e4%b8%8a%ef%bc%8c%e8%87%aa%e4%b8%8b%e8%80%8c%e4%b8%8a%e7%9a%84","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=109647","title":{"rendered":"\u4e2d\u56fd\u79d1\u5927\u8def\u519b\u5cadNature\u5b50\u520a\uff1a\u5728\u77f3\u58a8\u70ef\u4e0a\uff0c\u81ea\u4e0b\u800c\u4e0a\u7684\u7cbe\u51c6\u5236\u5907Pt\u53cc\u539f\u5b50\u50ac\u5316\u5242"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

\u5728\u5316\u5b66\u91cd\u6574\u3001\u8d39\u6258\u5408\u6210\u3001\u751f\u7269\u8d28\u8f6c\u5316\u8fc7\u7a0b\u5f53\u4e2d\uff0c\u8d1f\u8f7d\u6027\u50ac\u5316\u5242\u4ecd\u7136\u662f\u88ab\u5927\u5bb6\u6240\u5e7f\u6cdb\u8fd0\u7528\u7684\u4e00\u7c7b\u50ac\u5316\u5242\u3002\u4eba\u4eec\u4e3a\u4e86\u8282\u7ea6\u91d1\u5c5e\u7684\u7528\u91cf\uff0c\u4ece\u800c\u53bb\u51cf\u5c0f\u91d1\u5c5e\u7eb3\u7c73\u9897\u7c92\u7684\u5c3a\u5bf8\u3002\u5f53\u51cf\u5c0f\u5230\u7eb3\u7c73\u9897\u7c92\u53ea\u542b\u6709\u51e0\u4e2a\u539f\u5b50\u7684\u60c5\u51b5\u4e0b\u65f6\uff0c\u7531\u4e8e\u6b64\u7c7b\u56e2\u7c07\u7684\u7535\u5b50\u7279\u6027\u662f\u975e\u8fde\u7eed\u7684\uff0c\u4ece\u800c\u5176\u7535\u5b50\u7279\u6027\u4f1a\u968f\u7740\u539f\u5b50\u4e2a\u6570\u7684\u6539\u53d8\u800c\u6539\u53d8\u3002\u540c\u65f6\uff0c\u8fd1\u4e9b\u5e74\u6765\uff0c\u5355\u539f\u5b50\u50ac\u5316\u5242\u7684\u7814\u7a76\u8d8a\u6765\u8d8a\u53d7\u5230\u5927\u5bb6\u7684\u5173\u6ce8\u3002\u7136\u800c\u5728\u6bd4\u8f83\u6e29\u548c\u7684\u6761\u4ef6\u4e0b\uff0c\u5728\u5927\u6bd4\u8868\u9762\u79ef\u8f7d\u4f53\u4e0a\u5408\u6210\u542b\u6709\u51e0\u4e2a\u539f\u5b50\u7684\u91d1\u5c5e\u56e2\u7c07\u50ac\u5316\u5242\uff0c\u4f8b\u5982\u53cc\u539f\u5b50\uff0c\u5374\u9c9c\u6709\u62a5\u9053\u3002<\/p>\n

\u3010\u6210\u679c\u5c55\u793a\u3011<\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u4e2d\u56fd\u79d1\u5b66\u6280\u672f\u5927\u5b66\u8def\u519b\u5cad\u8bfe\u9898\u7ec4\uff08\u901a\u8baf\u4f5c\u8005\uff09\u548c\u4e2d\u56fd\u79d1\u5b66\u6280\u672f\u5927\u5b66\u540c\u6b65\u8f90\u5c04\u97e6\u4e16\u5f3a\u8bfe\u9898\u7ec4\uff08\u5171\u540c\u901a\u8baf\uff09\u5728Nature Communications\u4e0a\u53d1\u5e03\u4e86\u4e00\u7bc7\u201cBottom-up precise synthesis of stable platinum dimers on graphene\u201d \u7684\u6587\u7ae0\u3002\u8be5\u6587\u7ae0\u4e2d\u7814\u7a76\u4eba\u5458\u901a\u8fc7\u63a7\u5236\u5408\u6210\u77f3\u58a8\u70ef\u8f7d\u4f53\uff0c\u5229\u7528\u539f\u5b50\u5c42\u6c89\u79ef\uff08ALD\uff09\u7684\u6280\u672f\uff0c\u6210\u529f\u5236\u5907\u4e86Pt\u5355\u539f\u5b50\u50ac\u5316\u5242\uff0c\u968f\u540e\u4ee5\u5355\u539f\u5b50Pt\u4e3a\u6d3b\u6027\u4f4d\u70b9\uff0c\u901a\u8fc7\u63a7\u5236ALD\u7684\u5408\u6210\u6761\u4ef6\uff0c\u6210\u529f\u5236\u5907\u51faPt\u53cc\u539f\u5b50\u50ac\u5316\u5242\u3002\u5236\u5907\u51fa\u7684Pt\u53cc\u539f\u5b50\u50ac\u5316\u5242\uff0c\u5728\u787c\u6c28\u70f7\uff08AB\uff09\u6c34\u89e3\u8fc7\u7a0b\u4e2d\u5c55\u793a\u8d85\u9ad8\u7684\u6d3b\u6027\uff0c\u5176TOF\u6bd4 Pt\u5355\u539f\u5b50\u548cPt\u7eb3\u7c73\u9897\u7c92\u50ac\u5316\u5242\u5206\u522b\u9ad8\u51fa17\u548c45\u500d\u3002<\/p>\n

\u3010\u56fe\u6587\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u56fe1. Pt<\/strong>\u53cc\u539f\u5b50\u7684\u5408\u6210\u793a\u610f\u56fe<\/strong>
\n \"\"<\/p>\n

\u56fe2. Pt<\/strong>\u5355\u539f\u5b50\u548c\u53cc\u539f\u5b50\u7684\u5f62\u8c8c<\/strong><\/p>\n

\"\"<\/p>\n

(a-c) Pt \u5355\u539f\u5b50\u7684\u7403\u5dee\u77eb\u6b63\u7684HAADF-STEM\u56fe\u7247<\/p>\n

(d-f) Pt \u53cc\u539f\u5b50\u7684\u7403\u5dee\u77eb\u6b63\u7684HAADF-STEM\u56fe\u7247<\/p>\n

(g) Pt\u53cc\u539f\u5b50\u4e2d\uff0c\u4e24\u4e2aPt\u539f\u5b50\u7684\u8ddd\u79bb\u7edf\u8ba1<\/p>\n

(h)\u6837\u54c1 Pt-MeCpPtMe\/graphene\u548cMeCpPtMe\/graphene\u4e2dPt\u7684\u8d1f\u8f7d\u91cf\u4e4b\u6bd4<\/p>\n

(i) \u53cc\u539f\u5b50Pt2\/graphene\u548cPt1\/graphene\u4e2dPt\u7684\u8d1f\u8f7d\u91cf\u4e4b\u6bd4\u3002<\/p>\n

\u56fe3. X<\/em><\/strong>\u5c04\u7ebf\u5438\u6536\u53ca\u6a21\u62df<\/strong><\/p>\n

\"\"<\/p>\n

(a)\u5404\u6837\u54c1\u7684X\u5c04\u7ebf\u8fd1\u8fb9\u5438\u6536<\/p>\n

(b)\u5404\u6837\u54c1\u5728R \u7a7a\u95f4\u7684\u56fe\u8c31<\/p>\n

(c)MeCpPtMe\/graphene R\u7a7a\u95f4\u5b9e\u9645\u56fe\u8c31\u548c\u6a21\u62df\u56fe\u8c31\u5bf9\u6bd4\uff0c\u53ca\u8ba1\u7b97\u7ed3\u6784<\/p>\n

(d)\u5355\u539f\u5b50Pt1\/graphene R\u7a7a\u95f4\u5b9e\u9645\u56fe\u8c31\u548c\u6a21\u62df\u56fe\u8c31\u5bf9\u6bd4\uff0c\u53ca\u8ba1\u7b97\u7ed3\u6784<\/p>\n

(e)\u53cc\u539f\u5b50\u539f\u5b50Pt2\/graphene R\u7a7a\u95f4\u5b9e\u9645\u56fe\u8c31\u548c\u6a21\u62df\u56fe\u8c31\u5bf9\u6bd4\uff0c\u53ca\u8ba1\u7b97\u7ed3\u6784<\/p>\n

\u56fe4. <\/strong>\u50ac\u5316\u6d3b\u6027\u6d4b\u8bd5<\/strong><\/p>\n

\"\"<\/p>\n

(a)\u5404\u50ac\u5316\u5242\u6c34\u89e3\u653e\u6c22\u7684\u901f\u7387\u968f\u65f6\u95f4\u7684\u53d8\u5316<\/p>\n

(b)\u5404\u50ac\u5316\u5242\u7684\u6bd4\u503c\u91cf\u6d3b\u6027\u5bf9\u6bd4<\/p>\n

\u56fe5. <\/strong>\u7535\u5b50\u6001\u4ee5\u53caH2<\/strong>\u548cAB<\/strong>\u5206\u5b50\u7684\u5438\u9644<\/strong><\/p>\n

\"\"<\/p>\n

(a)Pt1\/graphene-R\u4e2dPt\u539f\u5b50\u4ee5\u53caPt2\/graphene-R\u9876\u7aef\u7684Pt\u539f\u5b50\u76845d\u8f68\u9053\u7684\u90e8\u5206\u6001\u5bc6\u5ea6\u8ba1\u7b97<\/p>\n

(b)AB\u5206\u5b50\u5728Pt1\/graphene-R\u4e0a\u7684\u5438\u9644\u6784\u578b<\/p>\n

(c)AB\u5206\u5b50\u5728Pt2\/graphene-R\u4e0a\u7684\u5438\u9644\u6784\u578b<\/p>\n

(d)H2\u5206\u5b50\u5728Pt1\/graphene-R\u4e0a\u7684\u5438\u9644\u6784\u578b<\/p>\n

(e)H2\u5206\u5b50\u5728Pt2\/graphene-R\u4e0a\u7684\u5438\u9644\u6784\u578b<\/p>\n

\u56fe6. Pt2 <\/strong>\u53cc\u539f\u5b50\u7684\u7a33\u5b9a\u6027<\/strong><\/p>\n

\"\"<\/p>\n

(a)Pt2\u53cc\u539f\u5b50\u4e94\u6b21\u7684\u787c\u6c28\u70f7\u6c34\u89e3\u7684\u5faa\u73af\u5b9e\u9a8c<\/p>\n

(b)\u65b0\u9c9c\u7684Pt2 \u53cc\u539f\u5b50\u6837\u54c1\uff0c\u5728\u6c26\u6c14\u6c1b\u56f4\u91cc300\u5ea6\u5904\u7406\u4e00\u5c0f\u65f6\u7684Pt \u53cc\u539f\u5b50\u6837\u54c1\u4ee5\u53ca\u5728\u6c26\u6c14\u6c1b\u56f4\u91cc400\u5ea6\u5904\u7406\u4e00\u5c0f\u65f6\u7684Pt \u53cc\u539f\u5b50\u6837\u54c1\uff0c\u5176\u4e09\u8005\u5728\u6c34\u89e3\u53cd\u5e94\u4e2d\uff0c\u6c34\u89e3\u901f\u7387\u968f\u65f6\u95f4\u53d8\u5316\u7684\u66f2\u7ebf<\/p>\n

(c)\u65b0\u9c9c\u7684Pt2 \u53cc\u539f\u5b50\u6837\u54c1\uff0c\u5728\u6c26\u6c14\u6c1b\u56f4\u91cc300\u5ea6\u5904\u7406\u4e00\u5c0f\u65f6\u7684Pt \u53cc\u539f\u5b50\u6837\u54c1\u4ee5\u53ca\u5728\u6c26\u6c14\u6c1b\u56f4\u91cc400\u5ea6\u5904\u7406\u4e00\u5c0f\u65f6\u7684Pt \u53cc\u539f\u5b50\u6837\u54c1\u7684\u6bd4\u8d28\u91cf\u6d3b\u6027<\/p>\n

(d,g)\u7ecf\u8fc7\u4e94\u6b21\u787c\u6c28\u70f7\u6c34\u89e3\u7684\u5faa\u73af\u5b9e\u9a8c\u4e4b\u540e\uff0cPt2\u53cc\u539f\u5b50\u6837\u54c1\u7684HAADF-STEM \u56fe\u7247<\/p>\n

(e,h) \u5728\u6c26\u6c14\u6c1b\u56f4\u91cc300\u5ea6\u5904\u7406\u4e00\u5c0f\u65f6\u7684Pt \u53cc\u539f\u5b50\u6837\u54c1\u7684HAADF-STEM \u56fe\u7247<\/p>\n

(f, i ) \u5728\u6c26\u6c14\u6c1b\u56f4\u91cc400\u5ea6\u5904\u7406\u4e00\u5c0f\u65f6\u7684Pt \u53cc\u539f\u5b50\u6837\u54c1\u7684HAADF-STEM \u56fe\u7247<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u6b64\u7bc7\u6587\u7ae0\uff0c\u4f5c\u8005\u5229\u7528ALD\u201c\u81ea\u4e0b\u800c\u4e0a\u201d\u5728\u9ad8\u6bd4\u8868\u9762\u79ef\u7684\u77f3\u58a8\u70ef\u4e0a\u6210\u529f\u7684\u5408\u6210\u4e86Pt \u5355\u539f\u5b50\u53ca\u53cc\u539f\u5b50\u50ac\u5316\u5242\u3002\u4f5c\u8005\u53d1\u73b0\uff0c\u8f7d\u4f53\u6d3b\u6027\u4f4d\u70b9\u7684\u9009\u62e9\uff0cALD\u7684\u9009\u62e9\u6027\u6c89\u79ef\uff0cALD\u7684\u81ea\u9971\u548c\u7279\u6027\uff0cPt\u5355\u539f\u5b50\u4ee5\u53ca\u53cc\u5b50\u7684\u7a33\u5b9a\u6027\u662f\u6210\u529f\u5408\u6210Pt\u53cc\u539f\u5b50\u7684\u51b3\u5b9a\u8981\u7d20\u3002\u4f5c\u8005\u901a\u8fc7HAADF-STEM, XAFS, ICP-AES, DFT \u7b49\u624b\u6bb5\uff0c\u786e\u8ba4\u4e86Pt2 \u53cc\u539f\u5b50\u662f\u4ee5Pt2Ox\u5f62\u5f0f\u5b58\u5728\u4e8e\u77f3\u58a8\u70ef\u8868\u9762\u3002\u540c\u65f6\u5728\u787c\u6c28\u70f7\u7684\u6c34\u89e3\u8fc7\u7a0b\u4e2d\uff0cPt2\u53cc\u539f\u5b50\u5206\u522b\u9ad8\u51fa\u7eb3\u7c73\u9897\u7c92\u53ca\u5355\u539f\u5b50\u50ac\u5316\u524245\u548c17\u500d\u3002\u901a\u8fc7DFT\u8ba1\u7b97\u53d1\u73b0\uff0c\u76f8\u6bd4\u4e8ePt\u7eb3\u7c73\u9897\u7c92\u548c\u5355\u539f\u5b50\uff0c\u787c\u6c28\u70f7\u5206\u5b50\u4ee5\u53caH2\u5206\u5b50\u5728Pt2\u53cc\u539f\u5b50\u4e0a\u7684\u5f31\u5438\u9644\u662f\u5176\u8d85\u9ad8\u6d3b\u6027\u7684\u4e3b\u8981\u539f\u56e0\u3002\u6700\u540e\uff0c\u4f5c\u8005\u6307\u51fa\uff0c\u6b64\u65b9\u6cd5\u4e5f\u4e3a\u4ee5\u540e\u7cbe\u786e\u5408\u6210\u5176\u4ed6\u4e0d\u540c\u91d1\u5c5e\u539f\u5b50\u6570\u7684\u56e2\u7c07\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6f5c\u5728\u7684\u65b9\u6cd5\u3002<\/p>\n

\u6587\u7ae0\u94fe\u63a5\uff1aBottom-up precise synthesis of stable platinum dimers on graphene<\/a>\u00a0<\/strong>(Nature Communications\uff0c<\/b><\/i>2017\uff0c<\/span>doi<\/abbr>:10.1038\/s41467-017-01259-z)<\/p>\n

\u672c\u6587\u7531\u4e2d\u79d1\u5927\u8def\u519b\u5cad\u8001\u5e08\u8bfe\u9898\u7ec4\u6295\u7a3f\u3002\u53c2\u4e0e\u65b0\u80fd\u6e90\u8bdd\u9898\u8ba8\u8bba\u8bf7\u52a0\u5165\u201c\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u6750\u6599\u4ea4\u6d41\u7fa4 422065953\u201d\u3002<\/p>\n

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