{"id":221972,"date":"2021-05-18T06:47:22","date_gmt":"2021-05-17T22:47:22","guid":{"rendered":"\/\/m.iemloyee.com\/?p=221972"},"modified":"2021-05-17T20:47:40","modified_gmt":"2021-05-17T12:47:40","slug":"nat-mater-%ef%bc%9a%e8%b0%83%e6%8e%a7%e5%8e%9f%e5%ad%90%e7%ba%a7%e6%a0%b8%e5%a3%b3%e7%bb%93%e6%9e%84%e9%87%8a%e6%94%be%e5%8f%8c%e9%87%91%e5%b1%9e%e5%82%ac%e5%8c%96%e5%89%82%e7%9a%84%e5%8d%8f%e5%90%8c","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=221972","title":{"rendered":"Nat. Mater.\uff1a\u8c03\u63a7\u539f\u5b50\u7ea7\u6838\u58f3\u7ed3\u6784\u91ca\u653e\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\u7684\u534f\u540c\u6548\u5e94"},"content":{"rendered":"

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

\u5f53\u4e24\u79cd\u50ac\u5316\u6d3b\u6027\u91d1\u5c5e\u7ed3\u5408\u5728\u4e00\u8d77\u7684\u50ac\u5316\u6027\u80fd\u8d85\u8fc7\u5bf9\u5e94\u7684\u5355\u91d1\u5c5e\u65f6\uff0c\u5c31\u4f1a\u4ea7\u751f\u534f\u540c\u4f5c\u7528\u3002\u5408\u91d1\u5316\u7684\u7eb3\u7c73\u9897\u7c92\u901a\u8fc7\u8c03\u6574\u5236\u5907\u65b9\u6cd5\u548c\u91d1\u5c5e\u7ec4\u6210\uff0c\u8c03\u6574\u5176\u50ac\u5316\u6027\u80fd\u3002\u4f46\u662f\uff0c\u539f\u5b50\u7ec4\u88c5\u7684\u8fc7\u7a0b\u548c\u5206\u5e03\u4e5f\u5f88\u5173\u952e\u3002\u6c14\u4f53\u548c\u70ed\u8bf1\u5bfc\u91d1\u5c5e\u518d\u5206\u5e03\uff0c\u53ef\u80fd\u5bf9\u50ac\u5316\u6027\u80fd\u4ea7\u751f\u5f88\u5927\u7684\u5f71\u54cd\u3002\u73b0\u5728\u53ef\u4ee5\u5408\u6210\u5177\u6709\u7cbe\u786e\u7684\u539f\u5b50\u6392\u5217\u7684\u53cc\u91d1\u5c5e\u7eb3\u7c73\u7c92\u5b50\u3002\u7136\u800c\uff0c\u7cfb\u7edf\u5730\u5c06\u91d1\u5c5e\u5206\u5e03\u4e0e\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\u7684\u6027\u80fd\u8054\u7cfb\u8d77\u6765\u7684\u7814\u7a76\u8fd8\u5f88\u5c11\u3002\u5c3d\u7ba1\u7535\u50ac\u5316\u4e2d\u7684\u6838-\u58f3\u50ac\u5316\u5242\u5f97\u5230\u4e86\u5f00\u53d1\uff0c\u4f46\u6838-\u58f3\u7eb3\u7c73\u9897\u7c92\u7684\u50ac\u5316\u884c\u4e3a\u4ecd\u672a\u5f97\u5230\u5145\u5206\u7684\u63a2\u7d22\uff0c\u5176\u4e2d\u5e95\u5c42\u6838\u8bf1\u5bfc\u7684\u58f3\u539f\u5b50\u7535\u5b50\u6027\u8d28\u7684\u53d8\u5316\u4f1a\u5bfc\u81f4\u4e86\u50ac\u5316\u6027\u80fd\u7684\u63d0\u9ad8\u3002\u672c\u6587\u51c6\u5907\u4e86\u4e00\u4e2a\u5b9a\u4e49\u660e\u786e\u7684Au-Pd\u6a21\u578b\u4f53\u7cfb\uff0c\u8be5\u4f53\u7cfb\u5177\u6709\u53ef\u7cbe\u786e\u8c03\u8c10\u7684\u539f\u5b50\u7ed3\u6784\uff0c\u5141\u8bb8\u5728\u91d1\u5c5e\u5206\u5e03\u3001\u6210\u5206\u548c\u6676\u4f53\u7ed3\u6784\u4e0e\u50ac\u5316\u6027\u80fd\u4e4b\u95f4\u5efa\u7acb\u76f4\u63a5\u5173\u8054\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u8377\u5170\u7684\u4e4c\u5f97\u52d2\u652f\u5927\u5b66\u7684<\/strong>Petra E. de Jongh<\/strong>\u548c<\/strong>Alfons van Blaaderen<\/strong>\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09\u7b49\u4eba<\/strong>\u8bbe\u8ba1\u53cc\u91d1\u5c5eAu-Pd\u7eb3\u7c73\u50ac\u5316\u5242\u7684\u539f\u5b50\u5206\u5e03\uff0c\u5728\u4e01\u4e8c\u70ef\u9009\u62e9\u6027\u52a0\u6c22\u4e2d\u83b7\u5f97\u4e86\u534f\u540c\u7684\u50ac\u5316\u6027\u80fd\u3002\u5355\u6676Au\u6838Pd\u58f3\u7eb3\u7c73\u68d2\u7684\u6d3b\u6027\u662f\u5bf9\u5e94\u7684\u5408\u91d1\u548c\u5355\u91d1\u5c5e\u50ac\u5316\u5242\u6d3b\u6027\u768450\u500d\uff0c\u540c\u65f6\u4fdd\u7559\u4e86\u9ad8\u9009\u62e9\u6027\u3002\u58f3\u539a\u5ea6\u4e0e\u50ac\u5316\u6d3b\u6027\u76f8\u5173\uff0c\u8868\u660e\u8868\u9762\u7684\u6027\u8d28\u548c\u4e9a\u8868\u9762\u7684\u5c42\u6570\u5728\u50ac\u5316\u6027\u80fd\u4e2d\u90fd\u8d77\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002\u672c\u6587\u540c\u65f6\u91c7\u7528\u5bc6\u5ea6\u6cdb\u51fd\u7406\u8bba\u6a21\u62df\uff0c\u5728\u7406\u8bba\u4e0a\u8bc1\u5b9e\u4e86\u8fd9\u4e00\u53d1\u73b0\u3002\u8fd9\u4e3a\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\u7684\u7ed3\u6784\u8bbe\u8ba1\u5f00\u8f9f\u4e86\u53e6\u4e00\u6761\u9014\u5f84\u3002\u76f8\u5173\u6210\u679c\u4ee5\u201c<\/strong>Unlocking synergy in bimetallic catalysts by core\u2013shell design<\/strong>\u201d\u53d1\u8868\u5728Nature Materials<\/strong>\u4e0a\u3002<\/p>\n

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

\u56fe<\/strong> 1 <\/strong>\u5177\u6709\u53ef\u8c03<\/strong>Pd<\/strong>\u542b\u91cf\u548c\u58f3\u539a\u5ea6\u7684\u5355\u5206\u6563<\/strong>Au@Pd@SiO2<\/sub> NRs<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09Au@Pd@SiO2<\/sub> NR\u53ca\u5176\u8868\u9762\u7ed3\u6784\u7684\u793a\u610f\u56fe;<\/p>\n

\uff08b\uff09\u539f\u5b50Pd\u542b\u91cf\u4e0e\u6df7\u5408\u7269\u4e2dPd\u524d\u4f53\uff08Na2<\/sub>PdCl4<\/sub>\uff09\u6d53\u5ea6\u7684\u53d8\u5316\u800c\u53d8\u5316;<\/p>\n

\uff08c-f\uff09HAADF-SEM\u56fe\u548cEDX\u56feXPd<\/sub>=0.04\uff08c\uff09\uff0c0.08\uff08d\uff09\uff0c0.21\uff08e\uff09\u548c0.32\uff08f\uff09\u3002<\/p>\n

\u56fe<\/strong> 2 <\/strong>\u6838\u58f3\u7ed3\u6784\u7684<\/strong>Au-Pd<\/strong>\u50ac\u5316\u5242\u6027\u80fd\u4f18\u4e8e\u5176\u5408\u91d1\u5316\u50ac\u5316\u5242<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09XPd<\/sub> = 0.08\u548cNPd<\/sub> = 2\u7684\u6838-\u58f3\uff08250\u2103\uff09\u7684EDX\u56fe\uff0c\u90e8\u5206\u5408\u91d1\u5316\uff08350\u2103\uff09\u548c\u5408\u91d1\u5316\uff08450\u2103\uff09Au@Pd@SiO2<\/sub> NR\uff1b<\/p>\n

\uff08b\uff09\u4e01\u4e8c\u70ef\u9009\u62e9\u6027\u52a0\u6c22\u4e2d\u4e0d\u540c\u7ed3\u6784\u7684Au@Pd@SiO2<\/sub> NR\uff1b<\/p>\n

\uff08c\uff09\u4e01\u4e8c\u70ef\u8f6c\u5316\u7387\u4e0e\u5728\u4e0d\u540c\u6e29\u5ea6\u4e0b\u9884\u5904\u7406\u7684Au@Pd@SiO2<\/sub> NR\u53cd\u5e94\u6e29\u5ea6\u7684\u51fd\u6570\u5173\u7cfb\uff1b<\/p>\n

\uff08d\uff09\u4e01\u4e8c\u70ef\u8f6c\u5316\u7387\u5bf9\u4e01\u70ef\u9009\u62e9\u6027\u7684\u5f71\u54cd\u3002<\/p>\n

\u56fe<\/strong> 3 Au<\/strong>\u6838<\/strong>Pd<\/strong>\u58f3\u50ac\u5316\u5242\u7684\u50ac\u5316\u6027\u80fd\u5bf9\u58f3\u5c42\u6570\u7684\u9ad8\u5ea6\u654f\u611f\u6027<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09Pd\u542b\u91cf\u548c\u58f3\u539a\u5ea6\u53ef\u63a7\u7684Au@Pd@SiO2<\/sub> NR\uff1aXPd<\/sub> = 0.04\uff0cNPd<\/sub> = 1\uff08\u7ea2\u8272\uff09\uff1bXPd<\/sub> = 0.08\uff0cNPd<\/sub> = 2\uff08\u6a59\u8272\uff09; XPd<\/sub> = 0.21\uff0cNPd<\/sub> = 5\uff08\u7eff\u8272\uff09\uff1bXPd<\/sub> = 0.32\uff0cNPd<\/sub> = 6\uff08\u84dd\u8272\uff09\uff1b\u5206\u522b\u542b\u67093.0\u548c6.1nm\u7403\u5f62\u9897\u7c92\u7684Au@SiO2<\/sub>\uff08XAuA = 1.0\uff0c\u68d5\u8272\uff09\u548cPd@SiO2<\/sub>\uff08XPd = 1.0\uff0c\u9ed1\u8272\uff09\u6837\u54c1\uff1b<\/p>\n

\uff08b\uff09\u4e01\u4e8c\u70ef\u8f6c\u5316\u7387\u4e0e\u53cd\u5e94\u6e29\u5ea6\u7684\u5173\u7cfb\uff1b<\/p>\n

\uff08c\uff09\u4e01\u4e8c\u70ef\u8f6c\u5316\u7387\u5bf9\u4e01\u70ef\u9009\u62e9\u6027\u7684\u5f71\u54cd\u3002<\/p>\n

\u56fe<\/strong> 4 <\/strong>\u8868\u9762\u523b\u9762\u7684\u6676\u4f53\u5b66\u53d6\u5411\uff0c<\/strong>Pd<\/strong>\u58f3\u539a\u5ea6\u548c\u6676\u683c\u5e94\u53d8\u51b3\u5b9a\u4e86\u53cd\u5e94\u7269\u7684\u5438\u9644\u80fd<\/strong><\/p>\n

\"\" \"\"<\/p>\n

\uff08a\uff09\u4e01\u4e8c\u70ef\u7684\u5e73\u5747\u5438\u9644\u80fd\u968f{100}\uff0c{111}\u548c{110}\u8868\u9762\u4e0aPd\u5c42\u6570\u7684\u53d8\u5316\u800c\u53d8\u5316\uff1b<\/p>\n

\uff08b\uff09\u03c3\u548c\u03c0\u7ed3\u5408\u7684\u793a\u610f\u56fe\u4ee5\u53ca\u7ed3\u5408\u80fd\u968f\u6c22\uff08\u9ed1\u8272\uff09\uff0c\u4e19\u70ef\uff08\u84dd\u8272\uff09\uff0c\u4e01\u70ef\uff08\u7eff\u8272\uff09\u548c\u4e01\u4e8c\u70ef\uff08\u7ea2\u8272\uff09\u7684Pd\u58f3\u539a\u5ea6\u53d8\u5316\u800c\u53d8\u5316\uff1b<\/p>\n

\uff08c\uff09\u6c22\u548c\u4e01\u4e8c\u70ef\u5728Pd\u548c\u5e94\u53d8Pd{111}\u548c{110}\u8868\u9762\u5177\u6709Pd\uff08389 pm\uff09\u548cAu\uff08407 pm\uff09\u6676\u683c\u53c2\u6570\u7684\u5438\u9644\u80fd\u3002<\/p>\n

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

\u672c\u6587\u8868\u660e\u6838\u58f3\u50ac\u5316\u5242\u6bd4\u5408\u91d1\u58f3\u50ac\u5316\u5242\u5177\u6709\u66f4\u9ad8\u7684\u6d3b\u6027\uff0c\u5b83\u4eec\u7684\u50ac\u5316\u6027\u80fd\u4e0e\u58f3\u539a\u5ea6\u6709\u5173\uff0cAu\u6838Pd\u58f3\u50ac\u5316\u5242\u7684\u6027\u80fd\u4e0e\u7eafPd\u50ac\u5316\u5242\u4e0d\u540c\uff0c\u751a\u81f3\u8fbe\u516d\u4e2a\u539f\u5b50\u7684\u94af\u58f3\u5c42\u3002\u672c\u6587\u7684\u7814\u7a76\u7a81\u51fa\u4e86\u8c03\u8282\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\u4e2d\u539f\u5b50\u5206\u5e03\u7684\u91cd\u8981\u6027\uff0c\u5e76\u4e3a\u5408\u7406\u8bbe\u8ba1\u5177\u6709\u6700\u4f73\u534f\u540c\u6027\u80fd\u7684\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\u5960\u5b9a\u4e86\u57fa\u7840\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5<\/strong>Unlocking synergy in bimetallic catalysts by core\u2013shell design<\/a>\uff08Nature Materials DOI: 10.1038\/s41563-021-00996-3\uff09\u3002<\/p>\n

\u6b22\u8fce\u5927\u5bb6\u5230\u6750\u6599\u4eba\u5ba3\u4f20\u79d1\u6280\u6210\u679c\u5e76\u5bf9\u6587\u732e\u8fdb\u884c\u6df1\u5165\u89e3\u8bfb\uff0c\u6295\u7a3f\u90ae\u7bb1tougao@cailiaoren.com\u3002\u672c\u6587\u7531\u6750\u6599\u4ebaMaterials_1219\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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