{"id":238010,"date":"2022-06-08T06:40:21","date_gmt":"2022-06-07T22:40:21","guid":{"rendered":"\/\/m.iemloyee.com\/?p=238010"},"modified":"2022-06-07T15:03:15","modified_gmt":"2022-06-07T07:03:15","slug":"%e6%9c%80%e6%96%b0science%ef%bc%9a%e7%9b%b4%e8%a7%86%e9%87%91%e5%b1%9e%e7%ba%b3%e7%b1%b3%e7%b2%92%e5%ad%90%e5%92%8c%e6%b0%a7%e5%8c%96%e7%89%a9%e8%bd%bd%e4%bd%93%e4%b9%8b%e9%97%b4%e7%9a%84%e5%8a%a8","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=238010","title":{"rendered":"\u6700\u65b0Science\uff1a\u76f4\u89c6\u91d1\u5c5e\u7eb3\u7c73\u7c92\u5b50\u548c\u6c27\u5316\u7269\u8f7d\u4f53\u4e4b\u95f4\u7684\u52a8\u6001\u76f8\u4e92\u4f5c\u7528"},"content":{"rendered":"

\u4e00\u3001\u3010\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u8d35\u91d1\u5c5e\u7eb3\u7c73\u7c92\u5b50\uff08NPs\uff09<\/strong>\u662f\u50ac\u5316\u5242\u4e2d\u5e38\u7528\u7684\u6d3b\u6027\u6210\u5206\u3002\u5f53\u8d35\u91d1\u5c5e\u4ee5\u7eb3\u7c73\u9897\u7c92\u7684\u5f62\u5f0f\u5206\u6563\u5728\u9ad8\u6bd4\u8868\u9762\u79ef\u6c27\u5316\u7269\u8f7d\u4f53\u4e0a\u65f6\uff0c\u4ea7\u751f\u50ac\u5316\u6027\u80fd\u4e00\u822c\u8ba4\u4e3a\u4e3b\u8981\u5f52\u56e0\u4e8e\u5c3a\u5bf8\u6548\u5e94\u3002\u4f46\u7531\u4e8e\u8d35\u91d1\u5c5e\u662f\u60f0\u6027\u6c27\u5316\u7269\u8f7d\u4f53\u4e0a\u7684\u6d3b\u6027\u76f8\uff0c\u91d1\u5c5e\u548c\u8f7d\u4f53\u4e4b\u95f4\u7684\u534f\u540c\u4f5c\u7528\u53ef\u80fd\u4e5f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4f8b\u5982\uff0c\u53ef\u9a71\u52a8\u7eb3\u7c73\u7c92\u5b50\u5305\u88f9\u5230\u8f7d\u4f53\u4e2d\u7684\u91d1\u5c5e-\u8f7d\u4f53\u5f3a\u76f8\u4e92\u4f5c\u7528\uff08SMSI\uff09\u5c31\u80fd\u591f\u963b\u6b62\u7eb3\u7c73\u7c92\u5b50\u4e4b\u95f4\u53d1\u751f\u51dd\u805a\uff08coalescence\uff09\u6216\u8005Ostwald\u719f\u5316\u884c\u4e3a\uff0c\u6709\u5229\u4e8e\u63d0\u9ad8\u50ac\u5316\u5242\u7684\u7a33\u5b9a\u6027\uff1b \u7136\u800c\uff0c\u6709\u7814\u7a76\u4e5f\u663e\u793a\u53cd\u5e94\u6761\u4ef6\u4e5f\u4f1a\u4fc3\u4f7f\u6c27\u5316\u7269\u8f7d\u4f53\u5305\u88f9\u91d1\u5c5e\u4ee5\u4f7f\u5176\u5931\u6d3b\u3002\u56e0\u6b64\uff0c\u4ee5\u53ef\u63a7\u7684\u65b9\u5f0f\u5f00\u53d1\u5229\u7528\u91d1\u5c5e\u7eb3\u7c73\u7c92\u5b50\u4e0e\u5176\u8f7d\u4f53\u4e4b\u95f4\u7684\u534f\u540c\u4f5c\u7528\u5bf9\u4e8e\u6539\u8fdb\u7684\u50ac\u5316\u5242\u53ca\u76f8\u5173\u5de5\u827a\u6765\u8bf4\u610f\u4e49\u91cd\u5927\u3002\u65e9\u671f\u5bf9SMSI\u7684\u7814\u7a76\u5927\u591a\u57fa\u4e8e\u95f4\u63a5\u7684\u79ef\u5206\u5149\u8c31\u89c2\u5bdf\uff0c\u5e76\u901a\u8fc7\u8868\u9762\u5316\u5b66\u6210\u5206\u7684\u6539\u53d8\u6216SMSI\u8bf1\u5bfc\u7684\u5316\u5b66\u5438\u9644\u80fd\u529b\u7684\u53d8\u5316\u6765\u63d0\u4f9b\u7eb3\u7c73\u7c92\u5b50\u5305\u88f9\u7684\u8bc1\u636e\u3002\u800c\u9ad8\u5206\u8fa8\u7387\u5b9e\u7a7a\u95f4\u65b9\u6cd5\uff0c\u5982\u626b\u63cf\u96a7\u9053\u663e\u5fae\u955c\uff08STM\uff09\u548c\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c\uff08TEM\uff09\uff0c\u5219\u53ef\u4ee5\u63d0\u4f9b\u76f4\u63a5\u7684\u539f\u5b50\u7ea7\u6210\u50cf\uff0c\u4ee5\u786e\u8ba4\u9ad8\u6e29\u8fd8\u539f\u6216\u6c27\u5316\u5904\u7406\u540e\u5305\u88f9SMSI\u72b6\u6001\u7684\u5f62\u6210\u3002\u7531\u4e8e\u65b9\u6cd5\u4e0a\u7684\u9650\u5236\uff0c\u5bf9\u4e8e\u5305\u88f9\u72b6\u6001\u7684\u76f4\u63a5\u6210\u50cf\u5927\u591a\u662f\u5728\u975e\u539f\u4f4d\u6761\u4ef6\u4e0b\u5b9e\u73b0\u7684\uff0c\u800c\u5bf9\u4e8e\u50ac\u5316\u53cd\u5e94\u6761\u4ef6\u4e0b\u7684\u91d1\u5c5e-\u8f7d\u4f53\u76f8\u4e92\u4f5c\u7528\u76ee\u524d\u8fd8\u77e5\u4e4b\u751a\u5c11\u3002<\/p>\n

\u4e8c\u3001\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u6709\u9274\u4e8e\u6b64\uff0c\u82cf\u9ece\u4e16\u8054\u90a6\u7406\u5de5\u5b66\u9662\u7684<\/strong>M. G. Willinger<\/strong>\u3001<\/strong>J. A. van Bokhoven<\/strong>\u548c\u9ec4\u5174<\/strong>\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09\u7b49\u4eba\u4f7f\u7528\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c\u5bf9\u94c2\u7eb3\u7c73\u7c92\u5b50-\u4e8c\u6c27\u5316\u949b\u8f7d\u4f53\u50ac\u5316\u5242\u7cfb\u7edf\u8fdb\u884c\u6210\u50cf\uff08\u5728\u6c22\u6c14\/\u6c27\u6c14\u603b\u538b\u4e3a1 bar\u7684\u6c27\u5316\u8fd8\u539f\u53cd\u5e94\u73af\u5883\uff09\uff0c\u63ed\u793a\u4e86\u5de5\u4f5c\u6761\u4ef6\u4e0b\u7eb3\u7c73\u7c92\u5b50\u3001\u8f7d\u4f53\u548c\u6c14\u76f8\u4e4b\u95f4\u7684\u52a8\u6001\u76f8\u4e92\u4f5c\u7528\u3002\u7814\u7a76\u4e4b\u6240\u4ee5\u9009\u62e9Pt\u2013TiO2<\/sub>\u50ac\u5316\u5242\uff0c\u662f\u56e0\u4e3a\u5b83\u662f\u6700\u65e9\u63cf\u8ff0SMSI\u72b6\u6001\u7684\u539f\u578b\u7cfb\u7edf\uff0c\u5e76\u4e14\u6700\u8fd1\u7684\u7814\u7a76\u4e5f\u8bc1\u660ePt \u7eb3\u7c73\u7c92\u5b50\u7684\u9759\u6001\u5305\u88f9\u72b6\u6001\u4e0d\u4ec5\u5b58\u5728\u4e8e\u6c22\u6c14\u6761\u4ef6\u4e0b\uff0c\u800c\u4e14\u4e5f\u5b58\u5728\u4e8e\u7eaf\u6c27\u5316\u6761\u4ef6\u4e0b\u3002\u57fa\u4e8eTEM\u7684\u539f\u4f4d\u7814\u7a76\uff0c\u4f5c\u8005\u63ed\u793a\u4e86\u5f53\u7cfb\u7edf\u66b4\u9732\u4e8e\u6c27\u5316\u8fd8\u539f\u6d3b\u6027\u533a\u5e76\u4e0e\u6c22\u6c14\u548c\u6c27\u6c14\u540c\u65f6\u76f8\u4e92\u4f5c\u7528\u65f6\uff0c\u94c2\u7684\u7ecf\u5178\u5305\u88f9SMSI\u72b6\u6001\u662f\u5982\u4f55\u901a\u8fc7\u8986\u76d6\u5c42\u7684\u5931\u7a33\u800c\u8fdb\u884c\u53d8\u5316\u7684\u3002\u5728\u53cd\u5e94\u6761\u4ef6\u4e0b\uff0c\u7814\u7a76\u89c2\u5bdf\u5230\u4e86\u4ee5TiO2<\/sub>\u5c40\u90e8\u7ed3\u6784\u5d29\u584c\u548c\u91cd\u5efa\u4e3a\u7279\u5f81\u7684\u754c\u9762\u52a8\u529b\u5b66\uff0c\u5373\u6d89\u53caPt \u7eb3\u7c73\u7c92\u5b50\u4e0b\u65b9\u8f7d\u4f53\u8fd8\u539f\u548c\u968f\u540e\u518d\u6c27\u5316\u7684\u6c27\u5316\u8fd8\u539f\u8fc7\u7a0b\u3002\u5728\u6b64\u8fc7\u7a0b\u4e2d\uff0cPt\u548cTiO2<\/sub>\u4e4b\u95f4\u56fa\u6709\u7684\u6676\u683c\u5931\u914d\u4ee5\u53ca\u76f8\u5173\u7684\u754c\u9762\u5e94\u53d8\u964d\u4f4e\u4e86\u53ef\u8fd8\u539f\u6c27\u5316\u7269\u4e2d\u7a7a\u4f4d\u5f62\u6210\u7684\u80fd\u5792\u3002\u7531\u6b64\u4ea7\u751f\u7684\u754c\u9762\u91cd\u6784\u4f1a\u5f15\u8d77\u9897\u7c92\u5f62\u6001\u7684\u663e\u8457\u53d8\u5316\uff0c\u5e76\u6700\u7ec8\u5bfc\u81f4\u9897\u7c92\u8fc1\u79fb\u7387\u7684\u53d8\u5316\u3002\u7814\u7a76\u8fd8\u53d1\u73b0\uff0c\u4f5c\u4e3a\u53cd\u5e94\u4ea7\u7269\u5f62\u6210\u7684\u6c34\u5e76\u4e0d\u662f\u9020\u6210\u4e0a\u8ff0\u73b0\u8c61\u7684\u539f\u56e0\uff1b\u76f8\u53cd\uff0c\u5411\u8fdb\u6599\u4e2d\u6dfb\u52a0\u6c34\u4f1a\u6291\u5236\u7c92\u5b50\u52a8\u529b\u5b66\u3002\u6700\u540e\uff0c\u901a\u8fc7\u7814\u7a76\u4e09\u79cd\u4e0d\u540c\u53d6\u5411\u7684\u7eb3\u7c73\u7c92\u5b50\uff0c\u4f5c\u8005\u8fd8\u8bc1\u660e\u4e86\u7eb3\u7c73\u7c92\u5b50\u6240\u4ea7\u751f\u7684\u884c\u4e3a\u4e0e\u91d1\u5c5e-\u8f7d\u4f53\u754c\u9762\u7684\u6784\u9020\u5bc6\u5207\u76f8\u5173\u3002\u4f5c\u8005\u8ba4\u4e3a\uff0c\u8fd9\u9879\u5de5\u4f5c\u4e3a\u7c92\u5b50\u91cd\u5efa\u548c\u5728\u8f7d\u4f53\u4e0a\u7684\u5b9a\u5411\u7c92\u5b50\u8fc1\u79fb\u63d0\u4f9b\u4e86\u76f4\u63a5\u89e3\u91ca\uff0c\u4e5f\u4e3a\u5728\u6c27\u5316\u6761\u4ef6\u4e0b\u4ea7\u751f\u7684\u975e\u7ecf\u5178SMSI\u72b6\u6001\u63d0\u4f9b\u4e86\u989d\u5916\u7684\u8bc1\u636e\u3002\u82cf\u9ece\u4e16\u8054\u90a6\u7406\u5de5\u5b66\u9662\u7684<\/strong>H. Frey<\/strong>\u548c<\/strong>A. Beck<\/strong>\u4e3a\u672c\u6587\u5171\u540c\u7b2c\u4e00\u4f5c\u8005<\/strong>\uff0c\u7814\u7a76\u6210\u679c\u4ee5 \u201cDynamic interplay between metal nanoparticles and oxide support under redox conditions\u201d<\/strong>\u4e3a\u9898\u53d1\u8868\u5728\u56fd\u9645\u8457\u540d\u671f\u520aScience<\/em><\/strong>\u4e0a\u3002<\/p>\n

\"\"<\/p>\n

\u4e09\u3001\u3010\u6838\u5fc3\u521b\u65b0\u70b9\u3011<\/strong><\/p>\n

1.\u7387\u5148\u5229\u7528\u539f\u4f4d\u8868\u5f81\u624b\u6bb5\u76f4\u63a5\u5728\u50ac\u5316\u8fc7\u7a0b\u4e2d\u89c2\u6d4bSMSI\u72b6\u6001\u3002<\/p>\n

2.\u539f\u4f4d\u8868\u5f81\u63ed\u793a\u4e86\u5728\u6c27\u5316\u8fd8\u539f\u6761\u4ef6\u4e0b\u7684\u975e\u7ecf\u5178SMSI\u72b6\u6001\u3002<\/p>\n

3.\u5229\u7528\u5e94\u53d8\u754c\u9762\u5904\u7684\u534f\u540c\u76f8\u4e92\u4f5c\u7528\u5f00\u53d1\u4e86\u964d\u4f4e\u6c27\u5316\u80fd\u5792\u7684\u65b9\u6cd5\u3002<\/p>\n

\u56db\u3001\u3010\u56fe\u6587\u89e3\u8bfb\u3011<\/strong><\/p>\n

\u56fe<\/strong>1 <\/strong>\u6c27\u5316\u8fd8\u539f\u6d3b\u6027\u533a\u7684\u5f62\u8c8c\u53d8\u5316<\/strong> \u00a9 2022 AAAS<\/strong><\/p>\n

\"\"<\/p>\n

\uff08A-F\uff09\u6c14\u4f53\u82af\u7247\u7cfb\u7edf\u4e2d\u6c14\u76f8\u6210\u5206\u4ece700 mbar\u6c27\u6c14\u53d8\u5316\u523060 mbar\u6c22\u6c14+700 mbar\u6c27\u6c14\u6df7\u5408\u6c14\u8fc7\u7a0b\u4e2d\u6240\u8bb0\u5f55\u7684TEM\u56fe\u50cf\uff1b<\/p>\n

\uff08G-I\uff09\u7c92\u5b50\u8868\u9762\u653e\u5927\u56fe\u663e\u793a\u8986\u76d6\u5c42\u53d1\u751f\u9010\u6e10\u8fd8\u539f\u53cd\u5e94\u3002<\/p>\n

\u56fe<\/strong>2 <\/strong>\u754c\u9762\u5904\u7684\u6c27\u5316\u8fd8\u539f\u5316\u5b66\u5f15\u53d1\u94c2\u7eb3\u7c73\u7c92\u5b50\u7684\u7ed3\u6784\u52a8\u529b\u5b66\u5e76\u53ef\u9a71\u52a8\u7c92\u5b50\u91cd\u6784\u548c\u8fc1\u79fb<\/strong> \u00a0\u00a9 2022 AAAS<\/strong><\/p>\n

\"\"<\/p>\n

\uff08A-C\uff09\u8bb0\u5f55\u53d6\u5411\u4e3a\u5782\u76f4\u4e8e\u754c\u9762\u7684\uff08111\uff09\u9762\u94c2\u7eb3\u7c73\u7c92\u5b50\u5f71\u50cf\u4e2d\u7684\u5355\u5e27\u56fe\u50cf\uff1b<\/p>\n

\uff08D\uff09\u5728\u4e0a\u8ff0\u5f71\u50cf\u4e2d\u4ee5\u65f6\u95f4\u4e3a\u5750\u6807\u622a\u53d6\u7684\u89c6\u56fe\uff1b<\/p>\n

\uff08E-F\uff09\u56fe\u50cf\u53ca\u5176\u5085\u91cc\u53f6\u6ee4\u6ce2\uff08Fourier-filtered\uff09\u5bf9\u5e94\u56fe\u50cf\uff0c\u5176\u4e2d\u53d6\u5411\u4e00\u81f4\u7684\u5e73\u9762\u6240\u663e\u793a\u7684\u989c\u8272\u4e5f\u662f\u7edf\u4e00\u7684\uff1b<\/p>\n

\uff08G-J\uff09\u8fd1\u4f3c\u4e0e\u5e73\u884c\u4e8eTiO2<\/sub>\u754c\u9762\u7684\u94c2\u9762\u53d6\u5411\u4e00\u81f4\u7684\u7c92\u5b50\u7684\u56fe\u50cf\u5e8f\u5217\uff1b<\/p>\n

\uff08K-N\uff09\u5c06\u5176Pt{111}\u9762\u503e\u5411\u4e8e\u754c\u9762\u7684\u7eb3\u7c73\u7c92\u5b50\u3002<\/p>\n

\u56fe<\/strong>3 <\/strong>\u79bb\u5f00\u6c27\u5316\u8fd8\u539f\u6d3b\u6027\u533a\u65f6\u94c2\u7eb3\u7c73\u7c92\u5b50\u7684\u5f62\u8c8c\u53d8\u5316<\/strong> \u00a0\u00a9 2022 AAAS<\/strong><\/p>\n

\u00a0\"\"<\/strong><\/p>\n

 <\/p>\n

\u5728600\u2103\u65f6\u5c0660 mbar\u6c22\u6c14+700 mbar\u6c27\u6c14\u6df7\u5408\u6c14\u7684\u6c14\u6c1b\u8f6c\u53d8\u56de700 mbar\u6c27\u6c14\u6c14\u6c1b\u53ef\u5bfc\u81f4\u7ecf\u5178\u7c92\u5b50\u751f\u957f\u7684\u6539\u9020\u91cd\u6784\u3002\u5728\u8fd9\u4e00\u8fc7\u7a0b\u4e2d\uff0c\u7eb3\u7c73\u7c92\u5b50\u9996\u5148\u9002\u5e94\u91c7\u7528\u5f62\u6210\u7403\u5f62\u5f62\u8c8c\uff08A-C\uff09\uff1b\u4e00\u65e6\u6c22\u6c14\u88ab\u5b8c\u5168\u79fb\u9664\uff0c\u7eb3\u7c73\u7c92\u5b50\u5468\u8fb9\u8f7d\u4f53\u6750\u6599\u5c31\u4f1a\u91cd\u6784\u5f62\u6210\u8986\u76d6\u5c42\uff08D-F\uff09\u3002<\/p>\n

\u4e94\u3001\u3010\u6210\u679c\u542f\u793a\u3011<\/strong><\/p>\n

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\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Dynamic interplay between metal nanoparticles and oxide support under redox conditions<\/a>, Science<\/em>, 2022<\/strong>, DOI: 10.1126\/science.abm3371.<\/p>\n","protected":false},"excerpt":{"rendered":"

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