{"id":43203,"date":"2016-09-26T06:30:30","date_gmt":"2016-09-25T22:30:30","guid":{"rendered":"\/\/m.iemloyee.com\/?p=43203"},"modified":"2017-03-04T10:26:51","modified_gmt":"2017-03-04T02:26:51","slug":"jacs%ef%bc%9a%e4%b8%80%e9%94%85%e6%b3%95%e5%88%b6%e5%a4%87%e4%b8%8d%e5%90%8c%e7%bb%93%e6%9e%84%e7%9a%84pd-pt%e5%8f%8c%e9%87%91%e5%b1%9e%e7%ba%b3%e7%b1%b3%e6%99%b6%e4%bd%93%e5%8f%8a%e5%85%b6%e6%88%90","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=43203","title":{"rendered":"\u590f\u5e7c\u5357JACS\uff1a\u4e00\u9505\u6cd5\u5236\u5907\u4e0d\u540c\u7ed3\u6784\u7684Pd-Pt\u53cc\u91d1\u5c5e\u7eb3\u7c73\u6676\u4f53\u53ca\u5176\u6210\u56e0\u5206\u6790"},"content":{"rendered":"

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

\u7814\u7a76\u53d1\u73b0\uff0c\u5728\u5176\u5b83\u6761\u4ef6\u4e00\u5b9a\u7684\u60c5\u51b5\u4e0bBr–<\/sup>\u79bb\u5b50\u5728\u6539\u53d8\u91d1\u5c5e\u524d\u9a71\u4f53\u7684\u521d\u59cb\u8fd8\u539f\u901f\u7387\u65b9\u9762\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\uff0c\u4e0d\u540c\u7684\u8fd8\u539f\u901f\u7387\u81f4\u4f7f\u751f\u6210\u4e0d\u540c\u7ed3\u6784\u7684\u7eb3\u7c73\u6676\u3002\u8be5\u7814\u7a76\u4e0d\u4ec5\u6df1\u523b\u7684\u89e3\u91ca\u4e86\u53cc\u91d1\u5c5e\u7eb3\u7c73\u6676\u4f53\u7684\u6210\u6838\u548c\u589e\u957f\u8fc7\u7a0b\uff0c\u800c\u4e14\u4e3a\u4eca\u540e\u50ac\u5316\u5e94\u7528\u4e2d\u5408\u7406\u8bbe\u8ba1\u8d35\u91d1\u5c5e\u7eb3\u7c73\u6676\u4f53\u7ed3\u6784\u548c\u5f62\u72b6\u5960\u5b9a\u57fa\u7840\u3002<\/p>\n

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

2016\u5e748\u670829\u65e5\uff0cJACS\u5728\u7ebf\u53d1\u8868\u4e00\u7bc7\u9898\u4e3a\u201cQuantitative Analysis of the Reduction Kinetics Responsible for the One-Pot Synthesis of Pd\u2212Pt Bimetallic Nanocrystals with Different Structures\u201d\u7684\u6587\u7ae0\uff0c\u6587\u7ae0\u901a\u8baf\u4f5c\u8005\u4e3a\u7f8e\u56fd\u4e54\u6cbb\u4e9a\u7406\u5de5\u5b66\u9662\u590f\u5e7c\u5357\u6559\u6388\u3002<\/p>\n

\u590f\u5e7c\u5357\u56e2\u961f\u66fe\u62a5\u9053\u8fc7\u4e00\u7bc7\u4f7f\u7528\u8fd8\u539f\u52a8\u529b\u5b66\u65b9\u6cd5\u5b9a\u91cf\u5206\u6790Pd-Pt\u53cc\u91d1\u5c5e\u7eb3\u7c73\u6676\u4f53\u6709\u4e24\u4e2a\u72ec\u7279\u7ed3\u6784\u6210\u56e0\u7684\u6587\u7ae0\u3002\u5408\u6210\u4e2d\u52a0\u5165KBr\uff0c\u5e76\u901a\u8fc7\u914d\u4f4d\u4f53\u4ea4\u6362\u4f5c\u7528\u6539\u53d8\u91d1\u5c5e\u79bb\u5b50\u524d\u9a71\u4f53\u7684\u6c27\u5316\u8fd8\u539f\u7535\u4f4d\u8fdb\u800c\u63a7\u5236\u53cd\u5e94\u52a8\u529b\u5b66\u8fc7\u7a0b\u3002\u672a\u6dfb\u52a0KBr\u7684\u65f6\u5019\uff0cPdCl4<\/sub>2\u2013<\/sup>\u4e0ePtCl4<\/sub>2\u2013<\/sup>\u7684\u521d\u59cb\u8fd8\u539f\u901f\u7387\u4e4b\u6bd4\u5927\u7ea6\u662f10.0\uff0c\u4ee5\u81f4\u5f62\u6210Pd@Pt\u6b63\u516b\u9762\u4f53\u6838\u58f3\u7ed3\u6784\uff1b\u5f53KBr\u7684\u6d53\u5ea6\u4e3a63 mM\u65f6\uff0c\u4ea7\u7269\u4e3aPd\u2013Pt\u7eb3\u7c73\u6676\u3002<\/p>\n

\u6210\u56e0\u5206\u6790\u5982\u4e0b\uff1a\u968f\u7740\u53cd\u5e94\u7684\u8fdb\u884c\uff0c\u7531\u4e8e\u914d\u4f53\u4ea4\u6362\u4f5c\u7528\u4e24\u4e2a\u524d\u9a71\u4f53\u8fd8\u539f\u901f\u7387\u4e4b\u6bd4\u7531\u521d\u59cb\u503c\u4e0b\u964d\u52302.4\uff0c\u4ece\u800c\u751f\u6210PdCl4<\/sub>2\u2013<\/sup>\u548cPtCl4<\/sub>2\u2013<\/sup>\u3002Br–<\/sup>\u5728{100}\u9762\u7684\u751f\u957f\u5b58\u5728\u9009\u62e9\u6027\u9650\u5236\u6548\u5e94\uff0c\u81f4\u4f7f\u7eb3\u7c73\u6676\u5f62\u6210\u7acb\u65b9\u7ed3\u6784\u3002\u76f8\u5bf9\u4e8e\u7eb3\u7c73\u7acb\u65b9\u4f53\uff0c\u6b63\u516b\u9762\u4f53Pd@Pt\u6838\u58f3\u7ed3\u6784\u5728\u6c27\u6c14\u8fd8\u539f\u53cd\u5e94(ORR)\u4e2d\u8868\u73b0\u51fa\u66f4\u9ad8\u7684\u50ac\u5316\u6d3b\u6027\u548c\u6301\u4e45\u6027\u3002<\/p>\n

\u7ecf\u6d4b\u8bd5\uff0c\u6b63\u516b\u9762\u4f53\u6838\u58f3\u7ed3\u6784\u7684\u4f4d\u70b9\u6d3b\u6027\uff081.51 mA\u00b7cm-2<\/sup>\uff09\u3001\u8d28\u91cf\u6d3b\u6027\uff081.05 A mg\u20131<\/sup> Pt<\/sub>\uff09\u7b49\u6027\u80fd\u662f\u7eb3\u7c73\u7ba1\u76843\u20144\u500d\u9ad8\uff08\u7eb3\u7c73\u7ba1\u5206\u522b\u662f0.39 mA cm\u20132<\/sup>\u4e0e 0.34 A mg\u20131<\/sup> Pt<\/sub>\uff09\u3002\u7ecf\u8fc720000\u6b21\u5faa\u73af\u52a0\u901f\u8010\u4e45\u6027\u8bd5\u9a8c\u540e\uff0c\u516b\u9762\u4f53\u6838\u58f3\u7ed3\u6784\u7684\u8d28\u91cf\u6d3b\u6027\u4e3a\uff080.68 A mg\u20131<\/sup> Pt<\/sub>\uff09\uff0c\u8fd9\u662f\u4f20\u7edf\u5546\u7528Pt\/C\u50ac\u5316\u5242\u7684\u4e24\u500d\u3002<\/p>\n

\u00a0<\/strong>\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u00a0<\/strong>\u56fe\u4e00<\/strong> Pd\u2212Pt<\/strong>\u53cc\u91d1\u5c5e\u7eb3\u7c73\u6676\u4f53\u5408\u6210\u7684\u6d41\u7a0b\u56fe\u4ee5\u53ca<\/strong>TEM<\/strong>\u56fe\u50cf<\/strong><\/p>\n

\"111<\/a>
\n<\/a>\uff08A\uff09\u793a\u610f\u56fe\u8bf4\u660eBr\u2212<\/sup>\u79bb\u5b50\u5b58\u5728\u4e0e\u5426\u5bfc\u81f4Pd\u2212Pt\u53cc\u91d1\u5c5e\u7eb3\u7c73\u6676\u4f53\u751f\u957f\u7684\u4e3b\u8981\u5dee\u5f02\u3002<\/p>\n

\uff08B\uff0cC\uff09Pd\u2212Pt\u516b\u9762\u4f53\u6838\u58f3\u7ed3\u6784\u4e0ePd\u2212Pt\u7eb3\u7c73\u7acb\u65b9\u4f53\u5404\u81ea\u7684TEM\u56fe\u50cf\u3002<\/p>\n

\u56fe\u4e8c<\/strong> Pd@Pt<\/strong>\u6838\u58f3\u7ed3\u6784\u7684\u8868\u5f81<\/strong><\/p>\n

\"111<\/p>\n

(A)\u4f4e\u5206\u8fa8\u7387\u7684HAADF-STEM Pd@Pt\u6b63\u516b\u9762\u4f53\u56fe\u50cf\u3002<\/p>\n

(B)\u539f\u5b50\u6c34\u5e73\u7684\u5355\u4e2aPd@Pt\u516b\u9762\u4f53HAADF-STEM\u56fe\u50cf\uff0c\u663e\u793a\u4e86Pd\u539f\u5b50\u548cPt\u539f\u5b50\u7684\u6392\u5e03 (\u7ea2\u70b9\uff1aPd\uff1b\u7eff\u70b9\uff1aPt\u539f\u5b50)\u3002<\/p>\n

(C) Pd@Pt\u516b\u9762\u4f53\u76f8\u5e94\u7684HAADF-STEM\u56fe\u50cf\u4ee5\u53caPd\u3001Pt\u7684EDX\u6620\u5c04\u56fe\u3002<\/p>\n

(D) Pd@Pt\u516b\u9762\u4f53Pd\u548cPt\u7684\u7ebf\u626b\u63cfEDS\u3002<\/p>\n

\u00a0<\/strong>\u56fe\u4e09<\/strong> Pd<\/strong>\u2212<\/strong>Pt<\/strong>\u5408\u91d1\u7eb3\u7c73\u7acb\u65b9\u4f53\u7684\u8868\u5f81<\/strong><\/p>\n

\"111<\/strong><\/p>\n

(A)\u4f4e\u5206\u8fa8\u7387\u4e0b\u4e24\u4e2aPd\u2212Pt\u5408\u91d1\u7eb3\u7c73\u7acb\u65b9\u4f53\u7684HAADF-STEM\u56fe\u50cf\u3002<\/p>\n

(B)\u539f\u5b50\u6c34\u5e73\u4e0b\u5355\u4e2aPd\u2212Pt\u5408\u91d1\u7eb3\u7c73\u7acb\u65b9\u4f53\u7684HAADF-STEM\u5f62\u8c61\u3002<\/p>\n

(C)\u4e24\u4e2aPd\u2212Pt\u5408\u91d1\u7eb3\u7c73\u7acb\u65b9\u4f53\u7684HAADF-STEM\u56fe\u4ee5\u53caPd\u3001Pt\u5404\u81ea\u7684EDX\u6620\u5c04\u56fe\u3002<\/p>\n

(D) Pd\u2212Pt\u5408\u91d1\u7eb3\u7c73\u7acb\u65b9\u4f53\u7684\u7ebf\u626b\u63cfEDS\u3002<\/p>\n

\u00a0<\/strong>\u56fe\u56db<\/strong> \u5b9a\u91cf\u5206\u6790\u6240\u6d89\u53ca<\/strong>Pd<\/strong>\u2212<\/strong>Pt<\/strong>\u53cc\u91d1\u5c5e\u7eb3\u7c73\u6676\u4f53\u7684\u5408\u6210\u8fd8\u539f\u52a8\u529b\u5b66\u8fc7\u7a0b<\/strong>
\n<\/strong><\/p>\n

\"111<\/strong><\/p>\n

\u00a0<\/strong>(A\uff0cC)\u663e\u793aPd(II)\u548cPt(II)\u79bb\u5b50\u6d53\u5ea6\u968f\u53cd\u5e94\u65f6\u95f4\u7684\u53d8\u5316\u60c5\u51b5 (\u9ed1\u8272\u66f2\u7ebf\uff1a\u4e0d\u542bKBr\uff1b\u7ea2\u8272\u66f2\u7ebf\uff1a\u542b42 mM\u7684KBr\uff1b\u84dd\u8272\u66f2\u7ebf\uff1a\u542b63 mM\u7684KBr)\u3002<\/p>\n

(B\uff0cD) ln(Pd(II))\u548cln(Pt(II))\u968f\u53cd\u5e94\u65f6\u95f4\u7684\u53d8\u5316\u66f2\u7ebf\uff0c\u659c\u7387\u5206\u522b\u5bf9\u5e94\u4e0d\u540c\u7684\u901f\u7387\u5e38\u6570\u3002<\/p>\n

\u56fe\u4e94<\/strong> Pd@Pt<\/strong>\u6b63\u516b\u9762\u4f53\u4e0e<\/strong>Pd<\/strong>\u2212<\/strong>Pt<\/strong>\u5408\u91d1\u7eb3\u7c73\u7acb\u65b9\u4f53\u7535\u50ac\u5316\u6027\u8d28\u548c\u6c27\u8fd8\u539f\u53cd\u5e94\u7684\u6d4b\u5b9a<\/strong>
\n<\/strong><\/p>\n

\"111<\/strong><\/p>\n

(A) Pd@Pt\u6b63\u516b\u9762\u4f53\u4e0ePd\u2212Pt\u5408\u91d1\u7eb3\u7c73\u7acb\u65b9\u4f53(\u4e8c\u8005\u4ee5\u78b3\u4e3a\u652f\u67b6) \u7684\u5faa\u73af\u4f0f\u5b89\u66f2\u7ebf\uff0c\u5e76\u57280.1 M\u7684N2<\/sub>\u9971\u548c\u9ad8\u6c2f\u9178\u6eb6\u6db2\u6761\u4ef6\u4e0b\u6d4b\u8bd5\uff0c\u626b\u63cf\u7387\u4e3a50 mV\u00b7s\u2212<\/sup>1<\/sup>\u3002<\/p>\n

(B)\u6bd4\u8f83\u50ac\u5316\u5242\u4e4b\u95f4\u7684\u6b63\u5411\u5965\u5c14\u6781\u5316\u66f2\u7ebf\uff0c\u5e76\u5728 0.1 M O2<\/sub>\u9971\u548c\u9ad8\u6c2f\u9178\u6eb6\u6db2\u6761\u4ef6\u4e0b\u6d4b\u8bd5\u3002\u626b\u63cf\u7387\u4e3a10 mV\u00b7s\u2212<\/sup>1<\/sup>\uff0c\u8f6c\u901f\u4e3a1600 rpm\u3002\u5728\u65cb\u8f6c\u5706\u76d8\u7535\u6781\u51e0\u4f55\u533a\u57df\u4e2d(0.196cm2<\/sup>)\u64cd\u4f5c\u63d0\u9ad8\u7535\u6d41\u5bc6\u5ea6\u7684\u5747\u5300\u6027\u3002<\/p>\n

(C\uff0cD)\u5206\u522b\u8868\u793a\u50ac\u5316\u5242\u7684\u4f4d\u70b9\u6d3b\u6027\u548c\u8d28\u91cf\u6d3b\u6027\uff0c\u5e76\u5206\u522b\u4ee5ECSAs\u548cPt\u50ac\u5316\u5242\u8d28\u91cf\u4e3a\u6807\u51c6\u6765\u8868\u793a\u5176\u52a8\u6001\u7535\u6d41\u5bc6\u5ea6(jk<\/sub>) \u3002<\/p>\n

\u00a0<\/strong>\u56fe\u516d<\/strong> \u6bd4\u8f83<\/strong>0.9 VRHE<\/sub> Pd@Pt \/ C<\/strong>\u6b63\u516b\u9762\u4f53\u50ac\u5316\u5242\u5728\u52a0\u901f<\/strong>ORR<\/strong>\u8010\u4e45\u6027\u6d4b\u8bd5\u524d\u540e\uff08<\/strong>A<\/strong>\uff09\u3001\uff08<\/strong>B<\/strong>\uff09\u53d8\u5316<\/strong>
\n<\/strong><\/p>\n

\"111<\/strong><\/p>\n

(A)\u4f4d\u70b9ECSAs\u6d3b\u6027 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(B)\u8d28\u91cfORR\u6d3b\u6027<\/p>\n

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

\u8be5\u8bba\u6587\u63d0\u53ca\u4e86\u53cc\u91d1\u5c5e\u7eb3\u7c73\u6676\u4f53\u7684\u6210\u6838\u548c\u589e\u957f\u8fc7\u7a0b\uff0c\u800c\u4e14\u4e3a\u4eca\u540e\u50ac\u5316\u5e94\u7528\u4e2d\u5408\u7406\u8bbe\u8ba1\u8d35\u91d1\u5c5e\u7eb3\u7c73\u6676\u4f53\u7ed3\u6784\u548c\u5f62\u72b6\u5960\u5b9a\u575a\u5b9e\u57fa\u7840\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Quantitative Analysis of the Reduction Kinetics Responsible for the One-Pot Synthesis of Pd\u2013Pt Bimetallic Nanocrystals with Different Structures<\/a>\uff08JACS\uff0c2016\uff0c<\/span><\/em>DOI: 10.1021\/jacs.6b07213\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u7eb3\u7c73\u7ec4peng yuman \u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u7f16\u8f91\u6574\u7406\u3002<\/p>\n

\u5982\u679c\u60a8\u60f3\u53c2\u4e0e\u7eb3\u7c73\u8bdd\u9898\u8ba8\u8bba\u6216\u4e86\u89e3\u7eb3\u7c73\u5b66\u4e60\u5c0f\u7ec4\u62db\u52df\u8be6\u60c5\uff0c\u8bf7\u52a0\u5165\u6750\u6599\u4eba\u7eb3\u7c73\u5b66\u672f\u4ea4\u6d41\u7fa4\uff08228686798\uff09\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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