{"id":117053,"date":"2017-12-16T06:30:36","date_gmt":"2017-12-15T22:30:36","guid":{"rendered":"\/\/m.iemloyee.com\/?p=117053"},"modified":"2017-12-14T09:26:11","modified_gmt":"2017-12-14T01:26:11","slug":"nano-lett-%ef%bc%9aptni%e5%90%88%e9%87%91%e7%ba%b3%e7%b1%b3%e7%b2%92%e5%ad%90%e4%b8%ad%e7%9a%84%e5%b1%80%e9%83%a8%e5%8c%96%e5%ad%a6%e6%9c%89%e5%ba%8f%e5%92%8c%e8%b4%9f%e7%83%ad%e8%86%a8%e8%83%80","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=117053","title":{"rendered":"Nano Lett.\uff1aPtNi\u5408\u91d1\u7eb3\u7c73\u7c92\u5b50\u4e2d\u7684\u5c40\u90e8\u5316\u5b66\u6709\u5e8f\u548c\u8d1f\u70ed\u81a8\u80c0"},"content":{"rendered":"<p><strong>\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n<p>Pt\u57fa\u53cc\u91d1\u5c5e\u7eb3\u7c73\u7c92\u5b50\u6709\u7740\u4f18\u5f02\u7684\u50ac\u5316\u6027\u80fd\uff0c\u5982PtNi\u5408\u91d1\u7eb3\u7c73\u7c92\u5b50\uff0c\u80fd\u964d\u4f4e\u5728\u7535\u50ac\u5316\u53cd\u5e94\u4e2d\u8d35\u91d1\u5c5e\u7684\u4f7f\u7528\u91cf\uff0c\u800c\u70ed\u529b\u5b66\u6027\u80fd\u662f\u9009\u62e9\u50ac\u5316\u5242\u548c\u57fa\u7840\u6750\u6599\u7684\u4e00\u4e2a\u5173\u952e\u6807\u51c6\uff0c\u5b83\u51b3\u5b9a\u7740\u50ac\u5316\u5242\u7684\u64cd\u4f5c\u73af\u5883\u548c\u4f7f\u7528\u5bff\u547d\u3002\u4f46\u662f\uff0c\u5728\u6709\u8d1f\u8f7d\u7684Pt\u57fa\u53cc\u91d1\u5c5e\u7eb3\u7c73\u9897\u7c92\u4e0e\u57fa\u6750\u4e4b\u95f4\u5339\u914d\u7684\u70ed\u81a8\u80c0\u6027\u80fd\u7684\u7814\u7a76\u4e2d\uff0c\u4eba\u4eec\u5e76\u672a\u5173\u6ce8\u5982\u4f55\u8be6\u7ec6\u63a2\u6d4b\u539f\u5b50\u5c3a\u5ea6\u6676\u683c\u5e94\u53d8\u548c\u5143\u7d20\u5206\u5e03\uff0c\u4e14\u7eb3\u7c73\u7c92\u5b50\u7684\u6676\u683c\u70ed\u81a8\u80c0\u884c\u4e3a\u4e0e\u7c7b\u4f3c\u7269\u76f8\u5dee\u751a\u8fdc\u3002\u5728\u4eba\u4e3a\u8bbe\u8ba1\u7eb3\u7c73\u50ac\u5316\u5242\u70ed\u81a8\u80c0\u65f6\uff0c\u9700\u8981\u4ece\u77ed\u7a0b\u5c3a\u5ea6\u5230\u6574\u4f53\u5e73\u5747\u5c3a\u5ea6\u5bf9\u5c40\u90e8\u7ed3\u6784\u6709\u66f4\u6df1\u5165\u7684\u7406\u89e3\uff0c\u56e0\u6b64\u9700\u8981\u5bf9PtNi\u5408\u91d1\u7eb3\u7c73\u7c92\u5b50\u7684\u5143\u7d20\u5206\u5e03\u548c\u5c40\u57df\u7ed3\u6784\u8fdb\u884c\u7406\u8bba\u548c\u5b9e\u9a8c\u7814\u7a76\u3002<br \/>\n \u57fa\u4e8e\u8499\u7279\u5361\u6d1bMonte Carlo\u548c\u5206\u5b50\u52a8\u529b\u5b66\u7684\u6a21\u62df\u5df2\u7ecf\u88ab\u7528\u4e8e\u9884\u6d4bPtNi\u5408\u91d1\u9897\u7c92\u6700\u5916\u8868\u9762\u4e0a\u5c40\u90e8\u5316\u5b66\u6709\u5e8f\u7684\u5b58\u5728\uff0c\u4f46\u662f\u968f\u7740\u539f\u5b50\u6570\u91cf\u7684\u589e\u52a0\uff0c\u8ba1\u7b97\u80fd\u8017\u6210\u6307\u6570\u589e\u957f\uff0c\u96be\u4ee5\u8ba1\u7b975nm\u4ee5\u4e0a\uff0c\u5e76\u4e14\u5728\u5b9e\u9645\u5e94\u7528\u8fc7\u7a0b\u4e2d\uff0c\u5408\u6210\u548c\u52a8\u6001\u6761\u4ef6\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u70ed\u529b\u5b66\u5e73\u8861\u7684\u7406\u8bba\u6a21\u62df\u4e0e\u5b9e\u9645PtNi\u5408\u91d1\u7eb3\u7c73\u7c92\u5b50\u7ed3\u6784\u6709\u6240\u5dee\u522b\u3002EXAFS\u80fd\u8bc6\u522b\u6700\u63a5\u8fd1\u7684\u914d\u4f4d\u6027\u5c42\u548c\u5c40\u90e8\u7ed3\u6784\u7578\u53d8\uff0c\u80fd\u68c0\u6d4bPtNi\u5408\u91d1\u7eb3\u7c73\u9897\u7c92\u77ed\u7a0b\u7ed3\u6784\uff0c\u5f97\u5230\u5e73\u5747\u914d\u4f4d\u6570\u548c\u5f71\u54cd\u70ed\u81a8\u80c0\u7684\u6700\u8fd1\u952e\u5408\u957f\u5ea6\uff0c\u8fd9\u4e9b\u6570\u636e\u80fd\u591f\u9610\u660e\u6742\u539f\u5b50\u548c\u9ad8\u914d\u4f4d\u539f\u5b50\u5bf9\u7684\u4f5c\u7528\u3002\u539f\u5b50\u5bf9\u7684\u5206\u5e03\u51fd\u6570\uff08PDF\uff09\u6d4b\u91cf\u6570\u636e\u80fd\u63d0\u4f9b\u4ece\u5c40\u90e8\u914d\u4f4d\u5230\u957f\u7a0b\u6676\u683c\u5e94\u53d8\u7684\u5b8c\u6574\u7ed3\u6784\u4fe1\u606f\uff0c\u4ece\u800c\u53ef\u89c6\u5316\u5730\u4e86\u89e3\u5e73\u5747\u70ed\u81a8\u80c0\u4e0e\u5c40\u90e8\u6709\u5e8f\u5206\u5e03\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u5168\u9762\u5206\u6790\u7eb3\u7c73\u5c3a\u5bf8\u6548\u5e94\u5bf9\u5143\u7d20\u5206\u5e03\u3001\u6676\u683c\u5e94\u53d8\u548c\u70ed\u6027\u80fd\u7684\u5f71\u54cd\u3002<\/p>\n<p><strong>\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n<p>\u8fd1\u65e5\uff0c<strong>\u5317\u4eac\u79d1\u6280\u5927\u5b66\u90a2\u732e\u7136(\u901a\u8baf\u4f5c\u8005)<\/strong>\u5728<strong>Nano Letters<\/strong>\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a<strong>\u201cLocal Chemical Ordering and Negative Thermal Expansion in PtNi Alloy Nanoparticles\u201d<\/strong>\u7684\u6587\u7ae0\u3002\u7814\u7a76\u4e86\u6700\u8fd1\u65b0\u5174\u7684\u53cc\u91d1\u5c5e\u7eb3\u7c73\u50ac\u5316\u5242\u2014\u2014PtNi\u5408\u91d1\uff0c\u5f97\u5230\u4e86PtNi\u5408\u91d1\u7eb3\u7c73\u7c92\u5b50\uff08NPs\uff09\u7684\u5168\u5c3a\u5bf8\u7ed3\u6784\u63cf\u8ff0\u7684\u539f\u5b50\u5206\u5e03\u3001\u5316\u5b66\u73af\u5883\u548c\u6676\u683c\u70ed\u6f14\u5316\u3002\u7814\u7a76\u4eba\u5458\u901a\u8fc7\u6269\u5c55X\u5c04\u7ebf\u5438\u6536\u7ec6\u4e1d\u7ed3\u6784\uff08EXAFS\uff09\u786e\u5b9a\u4e86PtNi\u7eb3\u7c73\u9897\u7c92\u5728\u8868\u9762\u4e0a\u7684\u5143\u7d20\u5206\u5e03\uff0c\u7814\u7a76\u5176\u539f\u5b50\u5bf9\u5206\u5e03\u51fd\u6570\uff08PDF\uff09\u53ef\u8bc1\u660e\uff0c\u5728PtNi\u7eb3\u7c73\u9897\u7c92\u7684\u5c40\u90e8\u533a\u57df\u4e2d\u6709\u9762\u5fc3\u7acb\u65b9\u4e0e\u56db\u65b9\u6709\u5e8f\u90e8\u5206\u7684\u5171\u5b58\uff0c\u518d\u5229\u7528PDF\u6570\u636e\u4e0e\u53cd\u6f14Monte Carlo\uff08RMC\uff09\u6a21\u62df\uff0c\u53d1\u73b0\u5728{111}\u3001{001}\u9762\u4e2d\u4f1a\u5404\u81ea\u51fa\u73b0Ni\u3001Pt\u7684\u504f\u6790\u3002\u5bf9\u5c40\u90e8\u539f\u5b50\u5bf9\u91c7\u7528\u9ad8\u8fbe6nm\u7684\u9010\u5c42\u7edf\u8ba1\u5206\u6790\uff0c\u53ef\u5f97\u5230\u8868\u9762\u4e0a\u5c40\u90e8\u56db\u8fb9\u5f62\u6392\u5e8f\u7684\u5206\u5e03\u60c5\u51b5\u3002\u8fd9\u79cd\u5c40\u90e8\u914d\u4f4d\u73af\u5883\u4fc3\u8fdb\u4e86\u6742\u539f\u5b50Pt-Ni\u5bf9\u7684\u5206\u6563\uff0c\u8fd9\u5bf9\u4e8ePt41Ni59NPs\u7684\u8d1f\u70ed\u81a8\u80c0\u8d77\u7740\u91cd\u8981\u7684\u4f5c\u7528\u3002PtNi\u5408\u91d1\u7eb3\u7c73\u7c92\u5b50\u4ece\u5c40\u57df\u77ed\u7a0b\u914d\u5411\u5230\u957f\u7a0b\u5e73\u5747\u6676\u683c\u7684\u7814\u7a76\uff0c\u80fd\u4e3a\u8c03\u6574\u7eb3\u7c73\u6750\u6599\u7269\u7406\u6027\u8d28\u63d0\u4f9b\u65b0\u7684\u89c6\u89d2\u3002<\/p>\n<p><strong>\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n<p><strong>\u56fe1 \u4e0d\u540c\u6210\u5206PtNi\u5408\u91d1\u7eb3\u7c73\u9897\u7c92\u7684TEM\uff0cHRTEM\u548cSAED\u56fe\u50cf<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-117055\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/12\/1-45.jpg\" alt=\"\" width=\"600\" height=\"906\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/12\/1-45.jpg 600w, \/\/m.iemloyee.com\/wp-content\/uploads\/2017\/12\/1-45-199x300.jpg 199w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><br \/>\n \uff08a\u3001d\u3001g\u3001j\uff09 \u5206\u522b\u4e3aPt<sub>41<\/sub>Ni<sub>59<\/sub>\u3001Pt<sub>58<\/sub>Ni<sub>42<\/sub>\u3001Pt<sub>83<\/sub>Ni<sub>17<\/sub>\u3001Pt<sub>97<\/sub>Ni<sub>3<\/sub>\u7684TEM\u56fe\u50cf\u3002<\/p>\n<p>\uff08c\u3001f\u3001i\u3001l\uff09 \u5206\u522b\u4e3a\u76f8\u5e94\u5408\u91d1\u7eb3\u7c73\u9897\u7c92\u7684SAED\u56fe\u50cf\u3002<\/p>\n<p>\uff08b\u3001e\u3001h\u3001k\uff09 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PtNi\u7684PDF\u4e0eL10\u76f8\u6a21\u578b<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-117057\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/12\/3-41.jpg\" alt=\"\" width=\"600\" height=\"364\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/12\/3-41.jpg 600w, \/\/m.iemloyee.com\/wp-content\/uploads\/2017\/12\/3-41-300x182.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><br \/>\n \uff08a\uff09\u5ba4\u6e29\u4e0bPtNi\u5408\u91d1\u7eb3\u7c73\u9897\u7c92\u539f\u5b50\u5bf9\u7684\u5206\u5e03\u51fd\u6570\uff08PDF\uff09\u3002<\/p>\n<p>\uff08b\uff09L10\u76f8\u7684\u65e0\u5e8fFCC\u548c\u6709\u5e8f\u56db\u65b9\u76f8\u7684\u7ed3\u6784\u6a21\u578b\u3002\u7ea2\u8272\u7bad\u5934\u8868\u793a\u7b2c\u4e00\u4e2a\u914d\u4f4d\u5c42\uff0c\u9ec4\u8272\u548c\u84dd\u8272\u7bad\u5934\u8868\u793a\u7b2c\u4e8c\u4e2a\u914d\u4f4d\u5c42\u3002<\/p>\n<p><strong>\u56fe4 Pt<sub>41<\/sub>Ni<sub>59<\/sub>\u7684\u62df\u5408\u7ed3\u679c<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-117058\" src=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/12\/4-35.jpg\" alt=\"\" width=\"600\" height=\"385\" srcset=\"\/\/m.iemloyee.com\/wp-content\/uploads\/2017\/12\/4-35.jpg 600w, \/\/m.iemloyee.com\/wp-content\/uploads\/2017\/12\/4-35-300x193.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><br \/>\n 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\u901a\u8fc7\u5bf9PtNi\u5408\u91d1\u7eb3\u7c73\u9897\u7c92\u8fdb\u884c\u70ed\u6027\u80fd\u548c\u5c40\u90e8\u6676\u683c\u5e94\u53d8\u7684\u7cfb\u7edf\u7814\u7a76\u53d1\u73b0\uff0c\u6269\u5c55X\u5c04\u7ebf\u5438\u6536\u7ec6\u4e1d\u7ed3\u6784\uff08EXAFS\uff09\u53ef\u4ee5\u63ed\u793a\u5176\u5177\u6709\u77ed\u7a0b\u914d\u4f4d\u7ed3\u6784\uff0c\u8fd9\u4e5f\u8bc1\u5b9e\u4e86\u5728\u4ece\u6b63\u70ed\u81a8\u80c0\u5230\u8d1f\u954d\u70edNPs\u7684\u8d1f\u70ed\u81a8\u80c0\u7684\u8fc7\u6e21\u8fc7\u7a0b\u4e2d\uff0cPt-Ni\u7684\u6742\u539f\u5b50\u5bf9\u8d77\u5230\u4e3b\u5bfc\u4f5c\u7528\u3002\u57fa\u4e8e\u5e73\u5747\u7ed3\u6784\u7684\u914d\u5408\u7269\u91c7\u7528\u5355FCC\u76f8\u548c\u6709\u5e8f\u56db\u65b9\u76f8\u7ed3\u5408\u7684\u65b9\u5f0f\uff0c\u8fd9\u8bc1\u660e\u4e86Pt<sub>41<\/sub>Ni<sub>59<\/sub>\u5408\u91d1NPs\u4e2d\u5b58\u5728\u9690\u85cf\u7684\u5c40\u90e8\u56db\u65b9\u7578\u53d8\u3002\u7ed3\u5408\u9006\u8499\u7279\u5361\u7f57\u7684\u7ed3\u679c\uff0c\u8bc1\u5b9e\u4e86Ni\u4f1a\u5728{111}\u9762\u4e2d\u5fc3\u3001Pt\u4f1a\u5728\u8fb9\u7f18\u90e8\u5206\u5206\u5e03\u3002\u901a\u8fc7\u9010\u5c42\u7edf\u8ba1\u5206\u6790\u5c40\u90e8\u7684\u539f\u5b50\u5bf9\uff0c\u53d1\u73b0\u5c40\u90e8\u56db\u65b9\u6709\u5e8f\u6392\u5217\u7684\u4e3b\u8981\u5206\u5e03\u5728\u8868\u9762\u4e0a\u3002\u5c40\u90e8\u914d\u4f4d\u73af\u5883\u7684\u76f8\u4f3c\u6027\u4e3a\u4e00\u5b8c\u5168\u6709\u5e8f\u7684L10\u76f8\uff0c\u5728\u653e\u5927\u7eb3\u7c73\u5c3a\u5bf8\u7684PtNi\u5408\u91d1\u9897\u7c92\u540e\u53d1\u73b0\uff0c\u6b64\u76f8\u5177\u6709Pt-Ni\u5bf9\u7684\u8d1f\u70ed\u81a8\u80c0\u7684\u5173\u952e\u7279\u5f81\u3002\u7814\u7a76\u4e2d\u6240\u63d0\u51fa\u7684\u7efc\u5408\u65b9\u6cd5\u53ef\u4ee5\u63d0\u4f9bPtNi\u5408\u91d1\u7eb3\u7c73\u9897\u7c92\u5c40\u90e8\u5316\u5b66\u73af\u5883\u4e2d\u7684\u539f\u5b50\u5c3a\u5ea6\u5206\u5e03\u548c\u6709\u5e8f\u6392\u5217\u7684\u6e05\u6670\u56fe\u50cf\uff0c\u5bf9\u8bbe\u8ba1\u7eb3\u7c73\u50ac\u5316\u6750\u6599\u6709\u91cd\u8981\u7684\u6307\u5bfc\u610f\u4e49\u3002<\/p>\n<p><strong>\u6587\u732e\u94fe\u63a5\uff1a<\/strong><a href=\"http:\/\/pubs.acs.org\/doi\/10.1021\/acs.nanolett.7b04219\" target=\"_blank\" rel=\"noopener\">Local Chemical Ordering and Negative Thermal Expansion in PtNi Alloy Nanoparticles<\/a>\uff08Nano Lett.,2017,DOI: 10.1021\/acs.nanolett.7b04219\uff09<\/p>\n<p>\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u65b0\u4eba\u7ec4\u6b27\u4eea\u7f16\u8f91\uff0c\u5468\u68a6\u9752\u5ba1\u6838\uff0c<a href=\"\/\/m.iemloyee.com\/25127.html\" target=\"_blank\" rel=\"noopener\">\u70b9\u6211\u52a0\u5165\u6750\u6599\u4eba\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n<p><strong>\u6750\u6599\u6d4b\u8bd5\uff0c\u6570\u636e\u5206\u6790\uff0c\u4e0a<span style=\"color: #0000ff;\"><a href=\"http:\/\/www.ceshigu.com\/\" target=\"_blank\" rel=\"noopener\">\u6d4b\u8bd5\u8c37<\/a><\/span>!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u5f15\u8a00\u3011 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