{"id":45247,"date":"2016-10-10T14:00:19","date_gmt":"2016-10-10T06:00:19","guid":{"rendered":"\/\/m.iemloyee.com\/?p=45247"},"modified":"2017-03-04T10:29:04","modified_gmt":"2017-03-04T02:29:04","slug":"nano-lett-%ef%bc%9apt-ag%e7%ba%b3%e7%b1%b3%e7%ac%bc%e7%9a%84%e5%90%88%e6%88%90%e4%b8%8e%e8%a1%a8%e5%be%81%e4%bb%a5%e6%98%be%e7%a4%ba%e6%b0%a7%e8%bf%98%e5%8e%9f%e5%8f%8d%e5%ba%94%e6%b4%bb%e6%80%a7","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=45247","title":{"rendered":"Nano Lett.\uff1aPt-Ag\u7eb3\u7c73\u7b3c\u7684\u5408\u6210\u4e0e\u8868\u5f81\u4ee5\u663e\u793a\u6c27\u8fd8\u539f\u53cd\u5e94\u6d3b\u6027\u4e0e\u8010\u4e45\u6027\u7684\u63d0\u9ad8"},"content":{"rendered":"

\u3010\u5f15\u8bed\u3011<\/strong><\/p>\n

\u00a0<\/strong>\u7814\u7a76\u53d1\u73b0\uff0c\u6539\u53d8\u5e76\u8c03\u8282\u91d1\u5c5e\u7eb3\u7c73\u6676\u7684\u57fa\u672c\u7ec4\u5206\u80fd\u6709\u6548\u6539\u5584\u50ac\u5316\u5242\u6216\u8005\u7535\u50ac\u5316\u5242\u7684\u6027\u80fd\u5e76\u63d0\u9ad8\u50ac\u5316\u6d3b\u6027\u3002\u901a\u8fc7\u5bc6\u5ea6\u6cdb\u51fd\u8ba1\u7b97\u540e\uff0c\u4f5c\u8005\u8ba4\u4e3a\u50ac\u5316\u5242\u6d3b\u6027\u5927\u5c0f\u4e0eO-O\u952e\u65ad\u88c2\u8fc7\u7a0b\u4e2d\u8fc7\u6e21\u6001\u7684\u7a33\u5b9a\u6027\u9ad8\u4f4e\u6709\u5173\u3002\u5bf9\u6bd4\u4e0b\u53d1\u73b0\uff0c\u6539\u6027\u540e\u7684\u7eb3\u7c73\u7b3c\u6027\u80fd\u8d85\u8d8a\u4f20\u7edf\u7684Pt\/C\u5546\u7528\u50ac\u5316\u5242\uff0c\u8bc1\u660e\u5176\u5546\u4e1a\u524d\u666f\u5341\u5206\u5e7f\u9614\u3002<\/p>\n

\u8be5\u6587\u51fa\u81eaNano Letters\u4e0a\u7684\u4e00\u7bc7\u9898\u4e3a\u201cSynthesis and Characterization of Pt\u2212Ag Alloy Nanocages with Enhanced Activity and Durability toward Oxygen Reduction<\/strong>\u201d\u7684\u6587\u7ae0\uff0c\u672c\u6587\u901a\u8baf\u4f5c\u8005\u4e3a\u5a01\u65af\u5eb7\u661f\u5927\u5b66\u9ea6\u8fea\u900a\u5206\u6821Manos Mavrikakis<\/strong>\u6559\u6388\u548c\u4f50\u6cbb\u4e9a\u7406\u5de5\u5b66\u9662\u590f\u5e7c\u5357<\/strong>\u6559\u6388\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u00a0<\/strong>\u9996\u5148\uff0c\u901a\u8fc7\u7535\u7f6e\u6362\u6cd5\u5236\u5907\u51faPt-Ag\u7eb3\u7c73\u7b3c\u5e76\u5bf9\u5176\u8fdb\u884c\u8868\u5f81\uff1b\u5176\u6b21\uff0cPt56<\/sub>Ag44<\/sub>\/C\u7eb3\u7c73\u7b3c\u548cPt\/C\u5546\u7528\u50ac\u5316\u5242\u7684\u6027\u80fd\u5bf9\u6bd4\uff0c\u53d1\u73b0\u7eb3\u7c73\u7b3c\u50ac\u5316\u6d3b\u6027\u4e0e\u8010\u4e45\u6027\u7b49\u6027\u8d28\u4f18\u8d8a\uff1b\u518d\u6b21\uff0c\u901a\u8fc7\u5bc6\u5ea6\u6cdb\u51fd\u7406\u8bba\u63a8\u6d4b\u50ac\u5316\u5242\u7684\u6d3b\u6027\u5927\u5c0f\u4e0eO-O\u952e\u65ad\u88c2\u8fc7\u7a0b\u4e2d\u8fc7\u6e21\u6001\u7684\u7a33\u5b9a\u6027\u9ad8\u4f4e\u6709\u5173\u3002<\/p>\n

\u8be5\u56e2\u961f\u5408\u6210\u7684Pt-Ag\u5408\u91d1\u7eb3\u7c73\u7b3c\u7ec4\u6210\u4e3aPt19<\/sub>Ag81<\/sub>\uff0c\u5916\u7f18\u5c3a\u5bf818 nm\u4ee5\u53ca\u4e3a\u539a\u5ea63 nm\uff0c\u53ef\u7531Ag\u7eb3\u7c73\u7acb\u65b9\u4f53\u4e0ePt\uff08II\uff09\u901a\u8fc7\u7535\u7f6e\u6362\u53cd\u5e94\u4e00\u6b65\u5236\u5907\u3002\u5728\u52a0\u901f\u8010\u4e45\u6027\u5faa\u73af\u6d4b\u8bd5\u540e\u5176\u7535\u52bf\u57280.6\u20141.0 V\u4e4b\u95f4\u53d8\u5316\uff0c\u7eb3\u7c73\u7b3c\u7684\u7ec4\u6210\u4ea6\u53d1\u751f\u6539\u53d8\u4f46\u5176\u5f62\u8c8c\u672a\u53d1\u751f\u53d8\u5316\u3002\u6bd4\u8f83\u540e\u53d1\u73b0\uff0c\u7ecf\u5faa\u73af\u6d4b\u8bd5\u540e\u7eb3\u7c73\u7b3c\u7684\u6c27\u8fd8\u539f\u53cd\u5e94\u6bd4\u6d3b\u5ea6\u4e3a1.23 mA\u00b7cm-2<\/sup>\uff0c\u662f\u5546\u7528\u6700\u5148\u8fdb\u7684Pt\/C\u50ac\u5316\u5242\uff08\u8010\u4e45\u6027\u6d4b\u8bd5\u524d\u6bd4\u6d3b\u5ea6\u4e3a0.37 mA\u00b7cm-2<\/sup>\uff09\u76843.3\u500d\u3002\u572830000\u6b21\u7535\u538b\u5faa\u73af\u6d4b\u8bd5\u540e\uff0c\u7eb3\u7c73\u7b3c\u7684\u8d28\u91cf\u6d3b\u6027\u53ea\u4ece0.64\u964d\u52300.33 mg-1<\/sup>Pt<\/sub>\uff0c\u4ecd\u7ea6\u662f\u5546\u7528Pt\/C\u50ac\u5316\u5242\uff08\u8d28\u91cf\u6d3b\u6027\u4e3a0.19 mg-1<\/sup>Pt<\/sub>\uff09\u7684\u4e24\u500d\u3002\u7531\u6b64\u8bf4\u660e\u4e86Pt-Ag\u7eb3\u7c73\u7b3c\u4f18\u826f\u7684\u6027\u8d28\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u00a0<\/strong>\u56fe\u4e00<\/strong> \u5408\u6210\u9ad8<\/strong>ORR<\/strong>\u50ac\u5316\u6d3b\u6027<\/strong>Pt-Ag<\/strong>\u7eb3\u7c73\u7b3c\u7684\u4e3b\u8981\u6b65\u9aa4<\/strong><\/p>\n

\"118<\/p>\n

\uff08A\uff0cB\uff09Ag\u4e0ePt\uff08II\uff09\u4e4b\u95f4\u7684\u7535\u7f6e\u6362\u53cd\u5e94\u5e76\u4f7fAg\u7eb3\u7c73\u7acb\u65b9\u4f53\u4e2d\u63ba\u6742Pt\u3002<\/p>\n

\uff08C\uff09\u52a0\u901f\u8010\u4e45\u6027\u6d4b\u8bd5\u4e2dPt-Ag\u7eb3\u7c73\u7b3c\u7684\u53bb\u5408\u91d1\u5316\u8fc7\u7a0b\u3002<\/p>\n

\u56fe\u4e8c<\/strong> Pt-Ag<\/strong>\u7eb3\u7c73\u7b3c\u7684\u8868\u5f81<\/strong><\/p>\n

\"118<\/p>\n

\uff08A\uff0cB\uff09\uff08A\uff09\u548c\uff08B\uff09\u5206\u522b\u662f2%\u7684H2<\/sub>O2<\/sub>\u6eb6\u6db2\u8680\u523b24 h\u524d\u540e\u7684TEM\u56fe\u50cf\u3002\u5176\u4e2d\uff0c\u53f3\u4e0a\u89d2\u7684\u63d2\u56fe\u5bf9\u5e94\u7684\u662f\u7eb3\u7c73\u7b3c\u8f83\u5927\u500d\u6570\u7684TEM\u56fe\u50cf\u3002<\/p>\n

\uff08C\uff09H2<\/sub>O2<\/sub>\u8680\u523b\u540e\u7684\u5355\u4e2aPt-Ag\u7eb3\u7c73\u7b3c\u7684HAADF-STEM\u56fe\u3002<\/p>\n

\uff08D\u2014F\uff09\u5bf9\u5e94\u5143\u7d20\u7684EDX\u56fe\uff1a(D) Ag\uff0c(E) Pt\uff0c(F) Ag+Pt\u3002<\/p>\n

\u00a0<\/strong>\u56fe\u4e09<\/strong> Pt56<\/sub>Ag44<\/sub>\/C<\/strong>\u7eb3\u7c73\u7b3c\u548c<\/strong>Pt\/C<\/strong>\u5546\u7528\u50ac\u5316\u5242\u7684\u6027\u80fd\u5bf9\u6bd4<\/strong>
\n<\/strong><\/p>\n

\"118<\/strong><\/p>\n

\u00a0<\/strong>\uff08A\uff09Pt56<\/sub>Ag44<\/sub>\/C\u7eb3\u7c73\u7b3c\u548cPt\/C\u5546\u7528\u50ac\u5316\u5242\u7684\u5faa\u73af\u4f0f\u5b89\u66f2\u7ebf\u3002<\/p>\n

\uff08B\uff09Pt56<\/sub>Ag44<\/sub>\/C\u7eb3\u7c73\u7b3c\u548cPt\/C\u5546\u7528\u50ac\u5316\u5242ORR\u6b63\u5411\u6781\u5316\u66f2\u7ebf\u7684\u6bd4\u8f83\u3002\u7535\u6d41\u4ee5\u65cb\u8f6c\u5706\u76d8\u7535\u6781\u9762\u79ef\u4e3a\u6807\u51c6\u3002<\/p>\n

\uff08C\uff0cD\uff09\u8d28\u91cf\u6d3b\u6027\u4e0e\u4f4d\u70b9\u6d3b\u6027\u7ed9\u5b9a\u6d4b\u91cfE\u968f\u7535\u6d41\u5bc6\u5ea6\uff08jk<\/sub>\uff09\u7684\u53d8\u5316\uff0c\u4ee5ECASs\u4e0ePt\u50ac\u5316\u5242\u7684\u8d28\u91cf\u4e3a\u6807\u51c6\u3002<\/p>\n

\uff08E\uff0cF\uff090.9 V\u4e0b\u6d4b\u91cf\u8d28\u91cf\u6d3b\u5ea6\u4e0e\u4f4d\u70b9\u6d3b\u5ea6\u3002<\/p>\n

\u00a0<\/strong>\u56fe\u56db<\/strong> \u5bc6\u5ea6\u6cdb\u51fd\u65b9\u6cd5\u5206\u6790\u4e0d\u540c\u50ac\u5316\u5242\u6d3b\u6027\u9ad8\u4f4e\u7684\u7f18\u7531<\/strong><\/p>\n

\"118<\/p>\n

\uff08A\uff09\u7ecf\u8fc7\u4e0d\u540c\u6b21\u6570\u7684\u91cd\u590d\u7535\u52bf\u5faa\u73af\u6d4b\u8bd5\u540e\uff0cPt56<\/sub>Ag44<\/sub>\u7eb3\u7c73\u7b3c\u548cPt\/C\u5546\u7528\u50ac\u5316\u5242\u8010\u4e45\u6027\u7684\u5bf9\u6bd4\u3002\u5bf9\u6bd4\u57fa\u4e8e\u52a0\u901fORR\u8010\u4e45\u6027\u6d4b\u8bd5\uff08ADT\uff09\u524d\u540e\u7684\u4f4d\u70b9\u6d3b\u6027\u3001\u8d28\u91cf\u6d3b\u6027\u57280.9 VRHE<\/sub>\u5904\u6570\u503c\u7684\u5bf9\u6bd4\u3002<\/p>\n

\uff08B\uff09\u8ba1\u7b97\u5f97\u5230\u7684\u81ea\u7531\u80fd\u56fe\uff080.9VRHE<\/sub>\uff09\u53cd\u6620\u4e86Pt-Ag\uff08100\uff09\u9762\u5728ORR\u8fc7\u7a0b\u4e2d\u6240\u9700\u80fd\u91cf\u6700\u5c0f\u7684\u9014\u5f84\u3002\u56fe\u4e2d\u753b\u5708\u90e8\u5206\u5f3a\u8c03\u4e86\u8fc7\u6e21\u6001\u80fd\u91cf\u7684\u5927\u5c0f\u4e0e\u5b9e\u9a8c\u6240\u89c2\u5bdf\u5230\u7684\u6d3b\u6027\u5f3a\u5f31\u76f8\u5173\uff1a PtAg3<\/sub>\u6d3b\u6027\u9ad8\u4e8eAg\u662f\u7531\u4e8eOOH\uff08\u5982\u56fe\u7ea2\u8272\u5706\u5708\u90e8\u5206\u6240\u793a\uff09\u66f4\u6613\u65ad\u88c2\u7684\u7f18\u6545\u800c\u5f15\u8d77\uff1b\u800cPtAg\u6700\u5177\u6d3b\u6027\u4ea6\u662f\u56e0\u4e3a\u5176\u8fc7\u6e21\u6001\u80fd\u91cf\u66f4\u4f4e\u4ece\u800c\u66f4\u6613\u4f7fO2<\/sub>\u5206\u89e3\uff08\u5982\u56fe\u9ed1\u8272\u5706\u5708\u90e8\u5206\u6240\u793a\uff09\u3002<\/p>\n

\u56fe\u4e94<\/strong> Pt-Ag<\/strong>\u7eb3\u7c73\u7b3c\u7ecf\u8010\u4e45\u6027\u6d4b\u8bd5\u540e\u7684\u5f62\u8c8c\u53d8\u5316<\/strong>
\n<\/strong><\/p>\n

\"118<\/strong><\/p>\n

\uff08A\uff0cB\uff09 Pt-Ag\u7eb3\u7c73\u7b3c\u539f\u59cb\u7684TEM\u56fe\u50cf\u3002<\/p>\n

\uff08C\u2014F\uff09\u4e0d\u540c\u6b21\u6570\u7684\u91cd\u590d\u7535\u52bf\u5faa\u73af\u6d4b\u8bd5\u4e0b\u7684TEM\u56fe\u50cf\uff1a\u5206\u522b\u662f(C) 5000\uff0c (D) 10000\uff0c(E) 20000\uff0c(F) 30000\u6b21\u5faa\u73af\u6d4b\u8bd5\u3002\u5728\u6d4b\u8bd5\u8fc7\u7a0b\u4e2d\uff0c\u4f5c\u8005\u53d1\u73b0\u5373\u4f7f\u5176\u7ec4\u6210\u53d1\u751f\u4e86\u53d8\u5316\u4f46\u662f\u4ecd\u4fdd\u6301\u7740\u539f\u6709\u7eb3\u7c73\u7b3c\u7acb\u65b9\u5f62\u548c\u7a7a\u5fc3\u7ed3\u6784\u3002<\/p>\n

\u00a0<\/strong>\u3010\u603b\u7ed3\u3011<\/strong><\/p>\n

\u8be5\u8bba\u6587\u63d0\u53ca\u4e86Pt-Ag\u7eb3\u7c73\u7b3c\u5408\u6210\u4e0e\u8868\u5f81\u7684\u8fc7\u7a0b\uff0c\u800c\u4e14\u4e3a\u4eca\u540e\u7814\u7a76\u50ac\u5316\u6c27\u6c14\u8fd8\u539f\u8fc7\u7a0b\u63d0\u4f9b\u4e86\u5960\u5b9a\u575a\u5b9e\u57fa\u7840\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aSynthesis and Characterization of Pt\u2212Ag Alloy Nanocages with Enhanced Activity and Durability toward Oxygen Reduction<\/a>\uff08Nano Letters\uff0c2016\uff0cDOI: 10.1021\/acs.nanolett.6b03395\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u7eb3\u7c73\u7ec4Yuman Peng\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u7f16\u8f91\u6574\u7406\u3002<\/p>\n

\u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\uff0c\u8fd9\u91cc\u6c47\u96c6\u4e86\u5404\u5927\u9ad8\u6821\u7855\u535a\u751f\u3001\u4e00\u7ebf\u79d1\u7814\u4eba\u5458\u4ee5\u53ca\u884c\u4e1a\u4ece\u4e1a\u8005\uff0c\u5982\u679c\u60a8\u5bf9\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u8fdb\u5c55\uff0c\u89e3\u8bfb\u9ad8\u6c34\u5e73\u6587\u7ae0\u6216\u662f\u8bc4\u8ff0\u884c\u4e1a\u6709\u5174\u8da3\uff0c\u70b9\u6211\u52a0\u5165\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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