{"id":143561,"date":"2018-06-25T14:00:10","date_gmt":"2018-06-25T06:00:10","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=143561"},"modified":"2018-06-24T22:07:31","modified_gmt":"2018-06-24T14:07:31","slug":"%e6%b8%85%e5%8d%8e%e5%a4%a7%e5%ad%a6nature%e5%ad%90%e5%88%8a%ef%bc%9a%e9%ab%98%e6%80%a7%e8%83%bd%e7%a2%b3%e6%b0%ae%e8%b4%9f%e8%bd%bdfe2%e5%9b%a2%e7%b0%87%e5%82%ac%e5%8c%96%e5%89%82%e7%94%a8%e4%ba%8e","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=143561","title":{"rendered":"\u6e05\u534e\u5927\u5b66Nature\u5b50\u520a\uff1a\u9ad8\u6027\u80fd\u78b3\u6c2e\u8d1f\u8f7dFe2\u56e2\u7c07\u50ac\u5316\u5242\u7528\u4e8e\u70ef\u70c3\u73af\u6c27\u5316"},"content":{"rendered":"

\u3010\u524d\u8a00\u3011<\/strong><\/p>\n

\u4e9a\u7eb3\u7c73\u5c3a\u5ea6\u7684\u91d1\u5c5e\u56e2\u7c07\u76f8\u6bd4\u5bf9\u5e94\u7684\u7eb3\u7c73\u9897\u7c92\u7269\u901a\u5e38\u5177\u6709\u72ec\u7279\u4e14\u4ee4\u4eba\u610f\u60f3\u4e0d\u5230\u50ac\u5316\u7279\u6027\u3002\u5f53\u50ac\u5316\u5242\u6c89\u79ef\u5728\u886c\u5e95\u4e0a\u65f6\uff0c\u50ac\u5316\u5242\u4e2d\u5c11\u6570\u7684\u539f\u5b50\u80fd\u591f\u4f5c\u4e3a\u8fde\u63a5\u5747\u76f8\u548c\u975e\u5747\u76f8\u50ac\u5316\u7684\u5f3a\u6709\u529b\u7684\u6865\u6881\u3002\u7531\u4e8e\u4e9a\u7eb3\u7c73\u4f53\u7cfb\u7684\u7279\u6027\u80fd\u591f\u901a\u8fc7\u53bb\u9664\u6216\u6dfb\u52a0\u4e00\u4e2a\u539f\u5b50\u800c\u663e\u8457\u7684\u53d1\u751f\u53d8\u5316\uff0c\u56e0\u6b64\u6df1\u5165\u7406\u89e3\u7ed3\u6784\u2014\u2014\u7279\u6027\u4e4b\u95f4\u7684\u5173\u7cfb\u5bf9\u4e8e\u8bbe\u8ba1\u5177\u6709\u51fa\u8272\u6d3b\u6027\u548c\u9009\u62e9\u7684\u50ac\u5316\u5242\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002\u4e9a\u7eb3\u7c73\u56e2\u7c07\u7684\u7ed3\u6784\u548c\u6210\u5206\u80fd\u591f\u901a\u8fc7XAFS\u5149\u8c31\uff0c\u7403\u5dee\u77eb\u6b63STEM\u8868\u5f81\uff0c\u539f\u5b50\u7cbe\u5ea6\u662f\u5408\u6210\u5355\u5206\u6563\u91d1\u5c5e\u50ac\u5316\u5242\u7684\u9996\u8981\u524d\u63d0\uff0c\u4f46\u8fd9\u4ecd\u7136\u662f\u4e00\u4e2a\u5de8\u5927\u7684\u6311\u6218\u3002<\/p>\n

\u73af\u6c27\u5316\u5408\u7269\u662f\u7cbe\u7ec6\u5316\u5de5\u548c\u751f\u7269\u8f6c\u5316\u7684\u91cd\u8981\u4e2d\u95f4\u4f53\u3002\u5728\u76ee\u524d\u7684\u6db2\u76f8\u70ef\u70c3\u73af\u6c27\u5316\u65b9\u6cd5\u4e2d\uff0c\u901a\u5e38\u9700\u8981\u5927\u91cf\u4f7f\u7528\u6602\u8d35\u7684\u6c27\u5316\u5242\u6216\u5927\u5242\u91cf\u7684\u8054\u5408\u8bd5\u5242\uff0c\u8fd9\u4e0d\u53ef\u907f\u514d\u5730\u5bfc\u81f4\u6210\u672c\u589e\u52a0\u3002\u4e3a\u4e86\u514b\u670d\u8fd9\u4e00\u7f3a\u70b9\uff0c\u7814\u7a76\u4eba\u5458\u5df2\u7ecf\u5f00\u53d1\u4e86\u51e0\u79cd\u5747\u76f8\u50ac\u5316\u5242\uff0c\u5982\u94c1\u548c\u948c\u4ee3\u66ff\u7684\u591a\u91d1\u5c5e\u6c27\u9178\u76d0\uff0c\u5141\u8bb8O2<\/sub>\u4f5c\u4e3a\u6c27\u5316\u5242\uff0c\u800c\u4e0d\u9700\u8981\u4efb\u4f55\u8f85\u52a9\u8fd8\u539f\u5242\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u76f8\u5e94\u7684\u591a\u76f8\u50ac\u5316\u5242\u5f88\u5c11\u62a5\u9053\u3002\u56e0\u6b64\uff0c\u901a\u8fc7\u6865\u63a5\u4e24\u79cd\u7c7b\u578b\u7684\u50ac\u5316\u5242\uff0c\u8d1f\u8f7d\u7684\u4e9a\u7eb3\u7c73\u91d1\u5c5e\u7c07\u6709\u671b\u5728\u53cd\u5e94\u4e2d\u53d1\u6325\u4f5c\u7528\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u6765\u81ea\u6e05\u534e\u5927\u5b66\u7684\u738b\u5b9a\u80dc\uff08\u901a\u8baf\u4f5c\u8005\uff09\u6559\u6388<\/strong>\u56e2\u961f\u5728Nature communications<\/strong>\u4e0a\u53d1\u8868\u6587\u7ae0\uff0c\u9898\u4e3a\uff1aCarbon nitride supported Fe2<\/sub> cluster catalysts with superior performance for alkene epoxidation<\/strong>\u3002\u8be5\u56e2\u961f\u62a5\u9053\u4e86\u4e00\u79cd\u201c\u524d\u4f53\u9884\u9009\u201d\u7684\u6e7f\u5316\u5b66\u7b56\u7565\u6765\u5408\u6210\u8d1f\u8f7d\u5728\u4ecb\u5b54\u78b3\u6c2e\u5316\u7269(mpg-C3<\/sub>N4<\/sub>)\u4e0a\u7684\u9ad8\u5ea6\u5206\u6563\u7684Fe2<\/sub>\u7eb3\u7c73\u56e2\u7c07\u3002\u6240\u5f97Fe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u6837\u54c1\u5bf9\u53cd\u5f0f\u4e8c\u82ef\u4e59\u70ef\u73af\u6c27\u5316\u4e3a\u53cd\u5f0f\u4e8c\u82ef\u4e59\u70ef\u6c27\u5316\u7269\u663e\u793a\u51fa\u4f18\u5f02\u7684\u50ac\u5316\u6027\u80fd\uff0c\u572891 %\u7684\u9ad8\u8f6c\u5316\u7387\u4e0b\u663e\u793a\u51fa93 %\u7684\u4f18\u5f02\u9009\u62e9\u6027\u3002\u5206\u5b50\u6c27\u662f\u552f\u4e00\u7684\u6c27\u5316\u5242\uff0c\u4e0d\u4f7f\u7528\u919b\u4f5c\u4e3a\u8054\u5408\u8bd5\u5242\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u5728\u76f8\u540c\u6761\u4ef6\u4e0b\uff0c\u94c1\u535f\u5549\u3001\u5355\u539f\u5b50\u94c1\u548c\u5c0f\u7684\u94c1\u7eb3\u7c73\u7c92\u5b50(ca. 3\u2009nm)\u7684\u53cd\u5e94\u51e0\u4e4e\u662f\u60f0\u6027\u7684\u3002\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\u663e\u793a\uff0cFe2<\/sub>\u56e2\u7c07\u7684\u72ec\u7279\u53cd\u5e94\u6027\u6e90\u4e8e\u6d3b\u6027\u6c27\u7684\u5f62\u6210\u3002\u901a\u8fc7\u5408\u6210Pd2<\/sub>\u548cIr2<\/sub>\u7b49\u5176\u4ed6\u53cc\u539f\u5b50\u7c07\uff0c\u8fdb\u4e00\u6b65\u8bc1\u660e\u4e86\u8be5\u5408\u6210\u65b9\u6cd5\u7684\u666e\u904d\u9002\u7528\u6027\uff0c\u4e3a\u53d1\u73b0\u53cc\u539f\u5b50\u7c07\u50ac\u5316\u5242\u5960\u5b9a\u4e86\u57fa\u7840\u3002<\/p>\n

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

\u56fe1. Fe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u56e2\u7c07\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

a Fe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u7684HAADF-STEM\u56fe\uff1b<\/p>\n

b \u76f8\u5e94\u7684\u5143\u7d20\u5206\u5e03\u56fe\uff1b<\/p>\n

c Fe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u7684AC HAADF-STEM\u56fe\uff1b<\/p>\n

d Fe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u7684AC HAADF-STEM\u653e\u5927\u56fe\uff1b<\/p>\n

e, f 1, 2, \u548c3\u533a\u5f97\u5230\u7684\u5f3a\u5ea6\u66f2\u7ebf\uff1b<\/p>\n

\u56fe2. Fe K-edge\u7684X\u5c04\u7ebf\u5438\u6536\u5206\u6790<\/strong><\/p>\n

\"\"<\/p>\n

a Fe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>, Fe2<\/sub>O3<\/sub>, \u548cFe foil\u7684Fe k-edge\u7684XANES\u8c31\uff1b<\/p>\n

b Fe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>, Fe2<\/sub>O3<\/sub>, \u548cFe foil\u7684Fe k-edge\u7684\u5085\u91cc\u53f6\u53d8\u6362\uff1b<\/p>\n

c, d\u76f8\u5e94\u7684Fe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u5728R\u7a7a\u95f4\u548ck\u7a7a\u95f4\u7684EXAFS\u8c31\uff0cC\u63d2\u56fe\u4e3aFe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u7684\u6a21\u578b\u793a\u610f\u56fe\uff1b<\/p>\n

\u56fe3. \u53cd\u5f0f\u4e8c\u82ef\u4e59\u70ef\u73af\u6c27\u5316\u53cd\u5e94<\/strong><\/p>\n

\"\"<\/p>\n

a\u4e0d\u540c\u50ac\u5316\u5242\u50ac\u5316\u53cd\u5f0f\u4e8c\u82ef\u4e59\u70ef\u73af\u6c27\u5316\u53cd\u5e94\uff1b<\/p>\n

b\u53cd\u5f0f\u4e8c\u82ef\u4e59\u70ef\u50ac\u5316\u73af\u6c27\u5316\u53cd\u5e94\u4e2dFe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u7684\u56de\u6536\uff1b<\/p>\n

c Fe2<\/sub>O2<\/sub>\u4f4d\u53cd\u5f0f\u4e8c\u82ef\u4e59\u70ef\u73af\u6c27\u5316\u53cd\u5e94\u7684\u80fd\u91cf\u5206\u5e03(\u5355\u4f4d: eV )<\/p>\n

d\u6d3b\u6027\u5355\u914d\u4f4d\u6c27\u7684\u6d88\u8017\u4e0e\u518d\u751f<\/p>\n

\u56fe4.\u5176\u4ed6TM2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u56e2\u7c07\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

a Pd k-edge of Pd2<\/sub>\/mpg-C3<\/sub>N4<\/sub>, PdO,\u548cPd foil\u7684Pd k-edge\u7684XANES\u8c31\uff1b<\/p>\n

b Pd2<\/sub>\/mpg-C3<\/sub>N4<\/sub>, PdO, \u548cPd foil\u7684Pd k-edge\u7684\u5085\u91cc\u53f6\u53d8\u6362\uff1b<\/p>\n

c Pd2<\/sub>\/mpg-C3<\/sub>N4<\/sub> \u5728R\u7a7a\u95f4\u7684EXAFS\u8c31\u7684\u76f8\u5e94\u62df\u5408\uff0cc\u7684\u63d2\u56fe\u662fPd2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u7684AC HADDF-STEM\u56fe\uff1b<\/p>\n

d Ir2<\/sub>\/mpg-C3<\/sub>N4<\/sub>, IrO2<\/sub>, \u548cIr\u7c89\u4f53\u7684r L3-edge\u7684XANES\u8c31\uff1b<\/p>\n

e Ir2<\/sub>\/mpg-C3<\/sub>N4<\/sub>, IrO2<\/sub>, \u548cIr\u7c89\u4f53\u7684Ir L3-edge\u7684\u5085\u91cc\u53f6\u53d8\u6362\uff1b<\/p>\n

f Ir2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u5728R\u7a7a\u95f4\u7684EXAFS\u8c31\u7684\u76f8\u5e94\u62df\u5408\uff0cf\u7684\u63d2\u56fe\u662fIr2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u7684AC HADDF-STEM\u56fe\uff1b<\/p>\n

\u3010\u7ed3\u8bba\u3011<\/strong><\/p>\n

\u7efc\u4e0a\u6240\u8ff0\uff0c\u8be5\u56e2\u961f\u5f00\u53d1\u4e86\u4e00\u79cd\u201c\u524d\u4f53\u9884\u9009\u201d\u6e7f\u5316\u5b66\u7b56\u7565\u6765\u5408\u6210mpg-C3<\/sub>N4<\/sub>\u8d1f\u8f7dFe2<\/sub>\u56e2\u7c07\u50ac\u5316\u5242\uff0c\u5176\u7ed3\u6784\u901a\u8fc7AC-STEM, XAFS\u548c\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\u5f97\u5230\u3002\u901a\u8fc7\u4f7f\u7528\u5206\u5b50\u6c27\u4f5c\u4e3a\u6c27\u5316\u5242\uff0c\u5728\u6ca1\u6709\u919b\u4f5c\u4e3a\u8054\u5408\u8bd5\u5242\u7684\u60c5\u51b5\u4e0b\uff0c\u5236\u5907\u7684Fe2<\/sub>\/mpg-C3<\/sub>N4<\/sub>\u6837\u54c1\u5bf9\u70ef\u70c3\u73af\u6c27\u5316\u8868\u73b0\u51fa\u72ec\u7279\u548c\u4f18\u5f02\u7684\u50ac\u5316\u6027\u80fd\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u94c1\u535f\u5549\u3001\u5355\u539f\u5b50\u94c1\u548c\u5c0f\u7684\u94c1\u7eb3\u7c73\u7c92\u5b50\u51e0\u4e4e\u662f\u53cd\u5e94\u60f0\u6027\u7684\u3002\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\u663e\u793a\uff0cFe2<\/sub>\u7684\u72ec\u7279\u53cd\u5e94\u6027\u6765\u81ea\u6d3b\u6027\u6c27\u7684\u5f62\u6210\u3002\u8be5\u56e2\u961f\u7684\u65b9\u6848\u53ef\u7528\u4e8e\u5236\u5907\u5176\u4ed6\u53cc\u539f\u5b50\u7c07\uff0c\u4e3a\u8fdb\u4e00\u6b65\u7814\u7a76\u539f\u5b50\u7ea7\u7cbe\u786e\u7684\u4e9a\u7eb3\u7c73\u50ac\u5316\u5242\u5960\u5b9a\u4e86\u57fa\u7840\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Carbon nitride supported Fe2<\/sub> cluster catalysts with superior performance for alkene epoxidation<\/a>, (Nature Communications, 2018, DOI: 10.1038\/s41467-018-04845-x)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u5b66\u672f\u7ec4Z. Chen\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\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\u6750\u6599\u4eba\u7f16\u8f91\u90e8<\/a>\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\u7bb1\uff1atougao@cailiaoren.com\u3002<\/p>\n

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