{"id":206110,"date":"2020-07-27T12:00:56","date_gmt":"2020-07-27T04:00:56","guid":{"rendered":"\/\/m.iemloyee.com\/?p=206110"},"modified":"2020-07-27T14:37:19","modified_gmt":"2020-07-27T06:37:19","slug":"%e3%80%90%e5%b7%b2%e6%a0%a1%e7%a8%bf%e3%80%91%e6%b8%85%e5%8d%8e%e7%8e%8b%e5%ae%9a%e8%83%9c%e5%9b%a2%e9%98%9fnano-lett-%e9%ab%98%e6%95%88%e7%94%b5%e5%82%ac%e5%8c%96%e6%b0%a7%e8%bf%98%e5%8e%9f%e7%9a%84","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=206110","title":{"rendered":"\u6e05\u534e\u738b\u5b9a\u80dc\u56e2\u961fNano Lett.:\u9ad8\u6548\u7535\u50ac\u5316\u6c27\u8fd8\u539f\u7684\u5355\u4f4d\u70b9\u94dc\u50ac\u5316\u5242\u7684\u914d\u4f4d\u73af\u5883\u548c\u591a\u5c3a\u5ea6\u7ed3\u6784\u5de5\u7a0b"},"content":{"rendered":"
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Lett.<\/strong>\u671f\u520a\u4e0a\u3002<\/strong><\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe\u4e00<\/strong><\/p>\n \uff08b\uff0cc\uff09Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u7684SEM\uff08b\uff09\u548cTEM\uff08c\uff09\u56fe\u50cf\uff1b<\/p>\n \uff08d\uff09Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u7684SAED\u56fe\u8c31\uff1b<\/p>\n \uff08e\uff09\u901a\u8fc7\u5bf9\u76f8\u5e94\u7684EDS\u56fe\u8c31\u5206\u6790\uff0c\u53d1\u73b0Cu\u548cN\u5728\u78b3\u8f7d\u4f53\u4e0a\u7684\u5206\u5e03\u662f\u5747\u5300\u7684\uff1b<\/p>\n \uff08f\uff0cg\uff09Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u7684AC-HAADF-STEM\u56fe\u50cf\u663e\u793a\u4e86Cu\u539f\u5b50\u7684\u5206\u6563\u72b6\u6001\u3002<\/p>\n \u56fe\u4e8c<\/strong><\/p>\n \uff08b\uff09Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u3001Cu2+<\/sup>-SA\/NC\uff08meso\uff09-0\u3001NC\uff08meso\uff09\u548cNC\u6837\u54c1\u7684XRD\u56fe\u8c31\uff1b<\/p>\n \uff08c\uff09Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u3001NC\uff08meso\uff09\u548cNC\u7684N2<\/sub>\u5438\u9644-\u89e3\u5438\u7b49\u6e29\u7ebf\uff1b<\/p>\n \uff08d\uff0ce\uff09\u94dc\u7b94\u3001CuO\u3001Cu2<\/sub>O\u3001Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u548cCu2+<\/sup>-SA\/NC\uff08meso\uff09-0\u7684Cu-K\u8fb9\u7f18\u7684XANES\u5149\u8c31\uff08d\uff09\u548cFourier\u53d8\u6362EXAFS\u5149\u8c31\uff08e\uff09\uff1b<\/p>\n \uff08f\uff09Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u3001CuO\u548c\u94dc\u7b94\u7684WT-EXAFS\u56fe\uff1b<\/p>\n \uff08g\uff0ch\uff09\u5728r\u7a7a\u95f4\u5bf9\u5e94\u7684Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u7684EXAFS\u62df\u5408\u66f2\u7ebf\u3002<\/p>\n \u56fe\u4e09\u3001\u50ac\u5316\u5242\u5728\u9971\u5408\u6c27\u548c<\/strong>0.1 M KOH<\/strong>\u4e0b\u7684<\/strong>ORR<\/strong>\u7535\u50ac\u5316\u6027\u80fd\u8bc4\u4ef7<\/strong><\/p>\n \uff08b\uff09Cu-SA\/NC\uff08meso\uff09\u50ac\u5316\u5242\u7684ORR\u6d3b\u6027\u6bd4\u8f83\uff1b<\/p>\n \uff08c\uff09\u4e0d\u540c\u8f6c\u901f\uff08400-2500 rpm\uff09\u4e0bCu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u7684ORR LSV\u66f2\u7ebf\uff0c\u63d2\u56fe\uff1a\u4e0d\u540c\u7535\u4f4d\u4e0bCu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u548cPt\/C\u7684K\u2013L\u56fe\uff1b<\/p>\n \uff08d\uff09\u7535\u5b50\u8f6c\u79fb\u6570\uff08n\uff09\uff08\u9876\u90e8\uff09\u548cH2<\/sub>O2<\/sub>\u4ea7\u91cf\uff08\u5e95\u90e8\uff09\u4e0e\u7535\u4f4d\u7684\u5173\u7cfb\uff1b<\/p>\n \uff08e\uff09\u4e0d\u540c\u6837\u54c1\u57280.90 V\u548cE1\/2<\/sub>\u7684Jk<\/sub>\uff1b<\/p>\n \uff08f\uff09\u7531LSV\u66f2\u7ebf\u5bfc\u51fa\u4e0d\u540c\u50ac\u5316\u5242\u7684Tafel\u659c\u7387\uff1b<\/p>\n \uff08g\uff09\u57280.1 M KOH\u6c27\u6c14\u4e2d\u6ce8\u51653 M\u7532\u9187\uff0cCu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u548cPt\/C\u50ac\u5316\u5242\u7684\u7a33\u5b9a\u6027\u8bc4\u4ef7\uff1b<\/p>\n \uff08h\uff09Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u548cPt\/C\u57faZn-\u7a7a\u6c14\u7535\u6c60\u7684\u6781\u5316\u53ca\u76f8\u5e94\u7684\u529f\u7387\u5bc6\u5ea6\u56fe\uff1b<\/p>\n \uff08i\uff09Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u548cPt\/C\u57fa\u950c\u7a7a\u6c14\u7535\u6c60\u572850mA cm\u22122<\/sup>\u65f6\u7684\u6bd4\u5bb9\u91cf\u3002<\/p>\n \u56fe\u56db\u3001<\/strong>Ni-SA\/NC<\/strong>\uff08<\/strong>meso<\/strong>\uff09<\/strong>-7<\/strong>\u548c<\/strong>Fe-SA\/NC<\/strong>\uff08<\/strong>meso<\/strong>\uff09<\/strong>-7<\/strong>\u7684\u8868\u5f81<\/strong><\/p>\n \uff08b\uff0cc\uff09Ni-SA\/NC\uff08meso\uff09-7\uff08c\uff09\u548cFe-SA\/NC\uff08meso\uff09-7\uff08d\uff09\u7684AC-HAADF-STEM\u56fe\u50cf\uff1b<\/p>\n \uff08e\uff09Ni-SA\/NC\uff08meso\uff09-7\u3001NiO\u548cNi\u7b94\u6837\u54c1\u7684Ni-K\u8fb9\u7f18\u7684FT\uff1b<\/p>\n \uff08f\uff09Fe-SA\/NC\uff08meso\uff09-7\u3001Fe2<\/sub>O3<\/sub>\u548cFe\u7b94\u6837\u54c1\u7684Fe-K\u8fb9\u7f18\u7684FT\u3002<\/p>\n \u56fe\u4e94\u3001\u7406\u8bba\u8ba1\u7b97<\/strong><\/p>\n \uff08b\uff0cc\uff09OOH\u5728Cu1+<\/sup>-SA\uff08b\uff09\u548cCu2+<\/sup>-SA\uff08c\uff09\u4e0a\u5438\u9644\u7684\u51e0\u4f55\u7ed3\u6784\u548c\u7535\u8377\u5bc6\u5ea6\u5dee\u6620\u5c04\uff1b<\/p>\n \uff08d\uff09Cu1+<\/sup>-SA\u548cCu2+<\/sup>-SA\u7684\u603bDOS\uff0c\u4ee5\u53ca\u5b83\u4eec\u4e2dCu\u539f\u5b50\u7684PDOS\uff1b<\/p>\n \uff08e\uff09\u4e00\u4e2a\u6c27\u5438\u6536\u7684Cu1+<\/sup>-SA\u548cCu2+<\/sup>-SA\u7684\u603bDOS\uff0c\u4ee5\u53ca\u5176\u4e2dCu\u539f\u5b50\u548cO\u539f\u5b50\u7684PDOS\u3002<\/p>\n \u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n \u7efc\u4e0a\u6240\u8ff0\uff0c\u4f5c\u8005\u901a\u8fc7\u4ecb\u5b54\u4e8c\u6c27\u5316\u7845\u4fdd\u62a4\u7684\u70ed\u5904\u7406\u5438\u9644-\u70ed\u89e3\u7b56\u7565\uff0c\u5f00\u53d1\u51fa\u4e86\u4e00\u79cd\u94dc\u5355\u539f\u5b50\u50ac\u5316\u5242\uff0c\u8be5\u50ac\u5316\u5242\u5177\u6709\u53ef\u63a5\u8fd1\u7684Cu1+<\/sup>\u539f\u5b50\u4f4d\u7f6e\u548c\u663e\u8457\u6539\u5584\u7684\u4f20\u8d28\u6027\u80fd\u3002\u7814\u7a76\u53d1\u73b0\uff0c\u901a\u8fc7\u5728\u5438\u9644\u524d\u9a71\u4f53\u4e2d\u52a0\u5165\u5c3f\u7d20\u53ef\u4ee5\u8c03\u8282Cu2+<\/sup>\u4e0eCu1+<\/sup>\u7684\u6bd4\u4f8b\u3002\u4f5c\u8005\u901a\u8fc7\u7403\u5dee\u6821\u6b63\u7535\u955c\u5206\u6790\u548cEXAFS\u6d4b\u91cf\u8bc1\u5b9e\u4e86\u539f\u5b50\u5206\u6563\u7684Cu1+<\/sup>\u5355\u4f4d\u70b9\u53ca\u5176\u539f\u5b50\u6784\u578b\u3002ORR\u7684\u7535\u6d3b\u6027\u968fCu1+<\/sup>\u4f4d\u70b9\u7684\u589e\u52a0\u800c\u589e\u52a0\u3002\u7531\u4e8e\u5728\u72ec\u7279\u7684\u9ad8\u4ecb\u5b54\u7ed3\u6784\u4e2d\uff0cCu1+<\/sup>\u5355\u539f\u5b50\u4e2d\u5fc3\u7684\u5bc6\u96c6\u5206\u5e03\u548c\u589e\u5f3a\u4f20\u8d28\u7684\u534f\u540c\u4f5c\u7528\uff0c\u6700\u4f73\u7684Cu1+<\/sup>-SA\/NC\uff08meso\uff09-7\u50ac\u5316\u5242\u5177\u6709\u9ad8\u66b4\u9732Cu1+<\/sup>\u4f4d\u70b9\u7684\u7535\u50ac\u5316\u6d3b\u6027\u548c\u5728\u78b1\u6027\u4ecb\u8d28\u4e2d\u7684\u957f\u671f\u8010\u7528\u6027\u3002\u4f5c\u8005\u901a\u8fc7DFT\u8ba1\u7b97\u8868\u660e\uff0c\u5728ORR\u8fc7\u7a0b\u4e2d\uff0c\u5355\u4e00Cu\u50ac\u5316\u5242\u4e0aCu1+<\/sup>\u4f4d\u7f6e\u4e30\u5bcc\uff0c\u4e0eOOH\u5438\u9644\u6709\u826f\u597d\u7684\u7ed3\u5408\u80fd\uff0c\u5728\u78b1\u6027\u4ecb\u8d28\u4e0b\u5177\u6709\u8f83\u9ad8\u7684\u7535\u50ac\u5316\u6d3b\u6027\u3002\u4f5c\u8005\u8ba4\u4e3a\uff0c\u8fd9\u79cd\u5355\u539f\u5b50\u50ac\u5316\u5242\u5236\u5907\u7b56\u7565\u548c\u7814\u7a76\u7ed3\u679c\u4e3a\u672a\u6765\u8bbe\u8ba1\u548c\u5408\u6210\u9ad8\u6027\u80fd\u7684\u65e0\u8d35\u91d1\u5c5e\u5355\u539f\u5b50\u50ac\u5316\u5242\u63d0\u4f9b\u4e86\u65b0\u7684\u601d\u8def\uff0c\u5177\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u524d\u666f\u3002<\/p>\n\uff08a\uff09Cu-SA\/NC\uff08meso\uff09\u50ac\u5316\u5242\u7684\u5f62\u6210\u8fc7\u7a0b\uff1b<\/p>\n
\uff08a\uff09Cu-SA\/NC\uff08meso\uff09\u50ac\u5316\u5242\u7684Cu2p\u9ad8\u5206\u8fa8XPS\uff1b<\/p>\n
\uff08a\uff09Cu-SA\/NC\uff08meso\uff09\u50ac\u5316\u5242\u3001NC\uff08meso\uff09\u3001NC\uff08meso\uff09-7\u548c20 wt%Pt\/C\u50ac\u5316\u5242\u57281600 rpm\u8f6c\u901f\uff08\u626b\u63cf\u901f\u7387\uff1a5mV s\u22121<\/sup>\uff09\u4e0b\u7684ORR-LSV\u66f2\u7ebf\uff1b<\/p>\n
\uff08a\uff0cb\uff09Ni-SA\/NC\uff08meso\uff09-7\uff08a\uff09\u548cFe-SA\/NC\uff08meso\uff09-7\uff08b\uff09\u7684HAADFSTEM\u56fe\u50cf\u53ca\u76f8\u5e94\u7684\u80fd\u8c31\u56fe\uff1b<\/p>\n
\uff08a\uff09\u78b1\u6027\u4ecb\u8d28\u4e2dCu1+<\/sup>-SA\u6d3b\u6027\u4e2d\u5fc3\u548cCu2+<\/sup>-SA\u6d3b\u6027\u4e2d\u5fc3ORR\u53cd\u5e94\u9014\u5f84\u7684\u81ea\u7531\u80fd\u56fe\uff08pH=13\uff09\uff1b<\/p>\n