{"id":159308,"date":"2018-11-16T08:00:23","date_gmt":"2018-11-16T00:00:23","guid":{"rendered":"\/\/m.iemloyee.com\/?p=159308"},"modified":"2018-11-15T22:19:42","modified_gmt":"2018-11-15T14:19:42","slug":"nature-catalysis%e9%87%8d%e7%a3%85%e6%9c%ba%e7%90%86%ef%bc%9a%e7%ba%b3%e7%b1%b3%e7%b2%92%e5%ad%90%e5%b0%ba%e5%af%b8%e5%92%8c%e6%99%b6%e6%a0%bc%e6%b0%a7%e5%af%b9nifeoxhy%e6%b0%b4%e6%b0%a7%e5%8c%96","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=159308","title":{"rendered":"Nature Catalysis\u91cd\u78c5\u673a\u7406\uff1a\u7eb3\u7c73\u7c92\u5b50\u5c3a\u5bf8\u548c\u6676\u683c\u6c27\u5bf9NiFeOxHy\u6c34\u6c27\u5316\u7684\u5f71\u54cd"},"content":{"rendered":"
\u3010\u6210\u679c\u901f\u9012\u3011<\/strong><\/p>\n \u8fd1\u65e5\uff0c\u4e39\u9ea6\u6280\u672f\u5927\u5b66<\/strong>\u7684C. Roy<\/strong>\uff08\u7b2c\u4e00\u4f5c\u8005\uff09\u7b49\u4eba\u5728<\/strong>I. Chorkendorff\u200a<\/strong>\uff08\u901a\u8baf\u4f5c\u8005\uff09\u6559\u6388<\/strong>\u7684\u6307\u5bfc\u4e0b\uff0c\u5728\u56fd\u9645\u9876\u7ea7\u671f\u520aNature Catalysis<\/em><\/strong>\u4e0a\u53d1\u8868\u4e86\u6587\u7ae0\uff1aImpact of nanoparticle size and lattice oxygen on water oxidation on NiFeOx<\/sub><\/em>Hy<\/sub><\/em><\/strong>\u3002<\/strong>\u672c\u6587\u4e2d\uff0c\u7814\u7a76\u8005\u4eec\u4f7f\u7528\u8d28\u91cf\u9009\u62e9\u7684NiFe\u7eb3\u7c73\u7c92\u5b50\u548c\u540c\u4f4d\u7d20\u6807\u8bb0\u5b9e\u9a8c\u7684\u6a21\u578b\u7cfb\u7edf\uff0c\u63ed\u793a\u4e861M KOH\u4e2d\u7684\u6c27\u6c14\u91ca\u653e\u4e0d\u901a\u8fc7\u6676\u683c\u4ea4\u6362\u8fdb\u884c\u3002\u7814\u7a76\u8005\u4eec\u4f7f\u7528\u539f\u4f4d\u7535\u5316\u5b66-\u8d28\u8c31\u6cd5\uff0c\u4ee5\u53ca\u975e\u539f\u4f4d\u7684\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c\u548c\u4f4e\u80fd\u79bb\u5b50\u6563\u5c04\u5149\u8c31\u6765\u8fdb\u884c\u6d4b\u8bd5\u5206\u6790\u3002\u4e0e\u7c92\u5f84\u8d8b\u52bf\u4e00\u81f4\uff0c\u540c\u4f4d\u7d20\u7ed3\u679c\u8868\u660e\u6c27\u6c14\u7684\u4ea7\u751f\u4ec5\u9650\u4e8e\u8fd1\u8868\u9762\u533a\u57df\u3002\u5229\u7528\u9897\u7c92\u7684\u8868\u9762\u79ef\uff0c\u7814\u7a76\u8005\u4eec\u786e\u5b9a\u57280.3V\u7684\u8fc7\u7535\u4f4d\u4e0b\u50ac\u5316\u6c34\u6c27\u5316\u7684\u8f6c\u6362\u9891\u7387\u4e3a6.2\u00b11.6 s-1<\/sup>\uff0c\u8fd9\u662f\u78b1\u6027\u6eb6\u6db2\u4e2d\u6c27\u6c14\u91ca\u653e\u6027\u80fd\u7684\u6700\u9ad8\u503c\u3002<\/p>\n \u3010\u593a\u76ee\u4eae\u70b9\u3011<\/strong><\/p>\n \u00a0<\/strong>\u3010\u4e3a\u4ec0\u4e48\u8981\u505a\u8fd9\u4e2a\u8bfe\u9898\uff1f\u3011<\/strong><\/p>\n \u3010\u6211\u4eec\u662f\u600e\u6837\u8fdb\u884c\u7814\u7a76\u7684\uff1f\u3011<\/strong><\/p>\n \u56fe<\/strong>1. <\/strong>\u6c89\u79ef\u8d28\u91cf\u9009\u62e9\u7684\u7eb3\u7c73\u9897\u7c92\u3002<\/strong><\/p>\n a\uff0cA d.c. \u78c1\u63a7\u6e85\u5c04\uff0c\u6c14\u4f53\u805a\u96c6\u8d28\u91cf\u9009\u62e9\u7eb3\u7c73\u7c92\u5b50\u6e90\u4e0e\u6a2a\u5411\u65f6\u95f4\u98de\u884c\u8d28\u91cf\u8fc7\u6ee4\u5668\u3002 \u5c06\u8d28\u91cf\u9009\u62e9\u7684NiFe\u7eb3\u7c73\u9897\u7c92\u6c89\u79ef\u5728\u591a\u6676\u91d1\u76d8\u4e0a\u7528\u4e8e\u6d3b\u6027\u6d4b\u91cf\u3002b\uff0c\u56db\u79cd\u4e0d\u540c\u8d28\u91cf\u7684NiFe\u7eb3\u7c73\u9897\u7c92\u7684TEM\u56fe\u50cf c\uff0c\u4f7f\u7528\u5728b\u4e2d\u7684TEM\u56fe\u50cf\u4e0a\u6d4b\u91cf\u7684\u76f4\u5f84\u786e\u5b9a\u7684\u5c3a\u5bf8\u5206\u5e03\u663e\u793a\u6bcf\u4e2a\u6c89\u79ef\u7684\u8d28\u91cf\u7684\u5e73\u5747\u5c3a\u5bf8\u548c2\u03c3.<\/p>\n \u56fe<\/strong>2. <\/strong>\u6c89\u79ef\u7684<\/strong>6.7nm NiFe<\/strong>\u9897\u7c92\u7684\u975e\u539f\u4f4d\u8868\u5f81\u3002<\/strong> \u56fe<\/strong>3. NiFe<\/strong>\u7eb3\u7c73\u7c92\u5b50\u5728<\/strong>1.6 VRHE<\/strong>\u5728<\/strong>1M KOH<\/strong>\u4e2d\u7684\u7a33\u5b9a\u6027\u3002<\/strong> \u56fe<\/strong>4. <\/strong>\u4f7f\u7528<\/strong>HRTEM<\/strong>\u7814\u7a76\u9897\u7c92\u3002<\/strong> \u56fe<\/strong>5. NiFe<\/strong>\u7eb3\u7c73\u7c92\u5b50\u7684\u50ac\u5316\u6d3b\u6027\u3002<\/strong> \u56fe<\/strong>6. TOF<\/strong>\u4f5c\u4e3a\u5c3a\u5bf8\u7684\u51fd\u6570\uff0c\u5e76\u4e0e\u73b0\u6709\u6280\u672f\u7684\u975e\u8d35\u91d1\u5c5e\u50ac\u5316\u5242\u8fdb\u884c\u6bd4\u8f83\u3002<\/strong> \u56fe<\/strong>7. <\/strong>\u540c\u4f4d\u7d20\u6807\u8bb0\u5b9e\u9a8c\u7a0b\u5e8f\u3002<\/strong> \u56fe<\/strong>8. EC-MS<\/strong>\u548c<\/strong>LEIS<\/strong>\u6765\u81ea\u540c\u4f4d\u7d20\u6807\u8bb0\u5b9e\u9a8c\uff0c\u4f7f\u7528\u7a0b\u5e8f<\/strong>a<\/strong>\u3002<\/strong> \u3010\u603b\u7ed3\u3011<\/strong><\/p>\n \u79d1\u5b66\u5bb6\u4eec\u4f7f\u7528\u5145\u5206\u8868\u5f81\u7684\u8d28\u91cf\u9009\u62e9\u7684Ni\u548cFe\u7eb3\u7c73\u9897\u7c92\u4f5c\u4e3a\u6a21\u578b\u7cfb\u7edf\u6765\u7814\u7a76\u5b83\u4eec\u5728\u6c27\u6c14\u91ca\u653e\u6761\u4ef6\u4e0b\u7684\u57fa\u672c\u6027\u8d28\u3002\u4f7f\u7528LEIS\u5149\u8c31\u5b66\u548c\u57fa\u4e8e\u5fae\u82af\u7247\u7684EC-MS\u8bbe\u7f6e\u63d0\u4f9b\u4e86\u5bf9\u9ad8\u6027\u80fd\u53cd\u5e94\u548c\u8d77\u6e90\u7684\u57fa\u672c\u89c1\u89e3\u3002\u57281.6 V vs RHE\u4e0b\uff0c\u9897\u7c92\u57281,000\u5c0f\u65f6\u5185\u663e\u793a\u51fa\u6781\u9ad8\u7684\u6d3b\u6027\u548c\u7a33\u5b9a\u6027\u3002\u5728\u4e09\u79cd\u4e0d\u540c\u65b9\u6cd5\u4e4b\u540e\u8fdb\u884c\u7684\u540c\u4f4d\u7d20\u6807\u8bb0\u5b9e\u9a8c\u8868\u660e\uff0c\u50ac\u5316\u53cd\u5e94\u91ca\u653e\u7684\u6c27\u6c14\u4e2d\u6ca1\u6709\u6676\u683c\u6c27\u6216\u63d2\u5c42\u6c34\u5206\u5b50\u7684\u53c2\u4e0e\u3002\u56e0\u6b64\uff0c\u7814\u7a76\u8005\u4eec\u5f97\u51fa\u7ed3\u8bba\uff0c\u8d1f\u8d23\u50ac\u5316\u6027\u80fd\u7684\u6d3b\u6027\u4f4d\u70b9\u4ec5\u4f4d\u4e8e\u7eb3\u7c73\u9897\u7c92\u7684~3\u4e2a\u539f\u5b50\u5c42\u539a\u7684\u6c27\u5316\u8fd8\u539f\u6d3b\u6027\u8fd1\u8868\u9762\u533a\u57df\uff0c\u4f46\u662f\u4e3a\u4e86\u786e\u5b9a\u6d3b\u6027\u662f\u5426\u9650\u4e8e\u5916\u8868\u9762\u8fd8\u9700\u8981\u5bf9\u8be5\u533a\u57df\u5185\u7684\u79bb\u5b50\u8fc1\u79fb\u673a\u5236\u8fdb\u884c\u66f4\u52a0\u6df1\u5165\u7684\u8ba4\u8bc6\u3002\u5c06\u6d3b\u6027\u5f52\u4e00\u5316\u5230\u5916\u8868\u9762\uff0c\u53ef\u4ee5\u5927\u5f97\u5230\u50ac\u5316\u5242\u50ac\u5316\u6790\u6c27\u53cd\u5e94\u7684TOF\u4e3a6.2\u00b11.6s-1\uff0c\u0273= 0.3V\uff0c\u8fd9\u662f\u8fc4\u4eca\u4e3a\u6b62\u62a5\u9053\u7684\u6700\u597d\u7684\u50ac\u5316\u6548\u679c\u3002\u7814\u7a76\u8005\u4eec\u6700\u540e\u5f3a\u8c03\uff1a\u50ac\u5316\u6d3b\u6027\u7684\u8fdb\u4e00\u6b65\u589e\u5f3a\u5e94\u96c6\u4e2d\u4e8e\u5728\u8fd1\u8868\u9762\u533a\u57df\u7279\u5b9a\u539f\u5b50\uff0c\u800c\u4e0d\u662f\u50ac\u5316\u5242\u7684\u4f53\u76f8\u3002<\/p>\n\n
\n
<\/p>\n
<\/strong>a\uff0c\u6c89\u79ef\uff08b\uff0cd\uff09\u548c\u7535\u5316\u5b66\u6d4b\u8bd5\uff08c\uff0ce\uff09\u540e\u7684\u7eb3\u7c73\u9897\u7c92\u7684LEIS\u5149\u8c31\uff0cb-e\uff0cXPS\u5149\u8c31\uff08b\uff0cc\uff09\u548cSEM\uff08d\uff0ce\uff09\u3002 LEIS\u5149\u8c31\u5f52\u4e00\u5316\u4e3aAu\u5cf0\u7684\u9ad8\u5ea6\u3002\u5bf9\u4e8eNi 2p 3\/2\uff08b\uff09\u548cFe 2p 3\/2\uff08c\uff09\u533a\u57df\u663e\u793a\u7684XPS\u5149\u8c31\u7ecf\u8fc7\u7535\u8377\u6821\u6b63\uff0c\u5e76\u5728\u51cf\u53bbShirley\u80cc\u666f\u540e\u7528Au 4f\u5cf0\u9762\u79ef\u5f52\u4e00\u5316\u3002\u5728\u76f8\u540c\u4f4d\u7f6e\u62cd\u6444SEM\u56fe\u50cf\u4ee5\u8bc4\u4f30\u6297\u70e7\u7ed3\u548c\u8150\u8680\u7684\u80fd\u529b\u3002<\/p>\n
\u57281.6 V vs RHE\u4e0b\uff0c~100 ng 6.7 nm NiFe\u7eb3\u7c73\u9897\u7c92\u7684\u8d28\u91cf\u6d3b\u6027\uff0c\u57281M KOH\u4e2d\u5177\u6709\u7535\u6d41\u4e2d\u65ad\uff08iR\uff09\u6821\u6b63\u3002<\/p>\n
<\/strong>\u6c89\u79ef\u5728Au TEM\u7f51\u683c\u4e0a\u76846.7nm\uff08950\u00d7103amu\uff09NiFe\u7eb3\u7c73\u9897\u7c92\u7684HRTEM\u56fe\u50cf\u3002 a\uff0c\u7eb3\u7c73\u7c92\u5b50\u7684HRTEM\u56fe\u50cf\u3002 \u63d2\u56fe\uff1a\u7a81\u51fa\u663e\u793a\u533a\u57df\u7684\u5085\u91cc\u53f6\u53d8\u6362\u663e\u793aNi3Fe\u76f8\u3002 b\uff0cc\uff0c\u5728\uff08b\uff09\u548c\uff08c\uff09\u7535\u5316\u5b66\u6c27\u5316\u4e4b\u524d\u7684\u7eb3\u7c73\u9897\u7c92\u7684\u76f8\u540c\u4f4d\u7f6eHRTEM\u56fe\u50cf<\/p>\n
\u5bf9\u4e8e\u6bcf\u79cd\u7eb3\u7c73\u9897\u7c92\u5c3a\u5bf8\uff0c\u4ee3\u8868\u6027NiFeOxHy\u7eb3\u7c73\u9897\u7c92\u6837\u54c1\u7684CV\u4e3a10mV s-1<\/sup>\u3002\u7535\u6d41\u5f52\u4e00\u5316\u4e3a\u603b\u91d1\u5c5e\u8d28\u91cf\u8d1f\u8f7d\u3002b\uff0c\u03b7= 270\uff08\u9634\u5f71\u7ebf\uff09\uff0c300\uff08\u8f83\u6d45\u9634\u5f71\uff09\u548c370 mV\uff08\u8f83\u6697\u9634\u5f71\uff09\u7684\u5927\u89c4\u6a21\u6807\u51c6\u5316\u6d3b\u52a8\u3002\u5e73\u5747\u8d28\u91cf\u6d3b\u52a8\u548cs.d. \u6765\u81ea\u4e09\u4e2a\u72ec\u7acb\u6837\u672c\u3002\u6240\u6709\u6d3b\u6027\u6d4b\u91cf\u5747\u5728Au\u57fa\u5e95\u4e0a\u5728N2<\/sub>\u9971\u548c\u76841M KOH\u4e2d\u4ee51,600\u8f6c\/\u5206\u949f\u8fdb\u884c\u3002\u7531\u7eb3\u7c73\u9897\u7c92\u6c89\u79ef\u7535\u6d41\u786e\u5b9a\u91d1\u5c5e\u8d28\u91cf\u3002<\/p>\n
\u00a0a\uff0cTOF\u7531NiF\u7eb3\u7c73\u7c92\u5b50\u7684\u603b\u91d1\u5c5e\u8d28\u91cf\uff08TOFbulk\uff09\uff0cNi\u6c27\u5316\u8fd8\u539f\u5cf0\uff08TOFredox\uff09\u548c\u4f30\u7b97\u7684\u8868\u9762\u539f\u5b50\uff08TOFsurface\uff09\u8ba1\u7b97\uff0c\u5728\u03b7= 300 mV\uff0c\u5728N2<\/sub>\u9971\u548c\u76841.0 M KOH\u4e2d\u6d4b\u91cf\uff0c10 mV s-1<\/sup>\u4f5c\u4e3a\u7c92\u5f84\u7684\u51fd\u6570\u3002 Ni\u6c27\u5316\u8fd8\u539f\u5cf0\u7528\u4e8e\u6d4b\u91cfNiFe\u8584\u819c\u7684TOF\u3002 y\u8f74\u8bef\u5dee\u6761\u6765\u81ea\u4e09\u4e2a\u72ec\u7acb\u6837\u672c\u3002 b\uff0c\u78b1\u6027\u4e2d\u6700\u5148\u8fdb\u7684\u975e\u8d35\u91d1\u5c5eOER\u50ac\u5316\u5242\u7684TOF\u3002<\/p>\n
\u540c\u4f4d\u7d20\u6807\u8bb0\u5b9e\u9a8c\u7684\u793a\u610f\u56fe\u3002\u7a0b\u5e8fa\u4f7f\u7528H2<\/sub>16<\/sup>O\u6c27\u5316\u7eb3\u7c73\u9897\u7c92\u548cH2<\/sub>18<\/sup>O\u6c27\u6c14\u6790\u51fa\uff0c\u800c\u7a0b\u5e8fb\u5219\u76f8\u53cd\u3002\u65b9\u6cd5c\u4f7f\u752818<\/sup>O2<\/sub>\u6c14\u4f53\u6c27\u5316NiFe\uff0c\u5e76\u4e14\u572816<\/sup>O\u6c34\u4e2d\u8fdb\u884c\u6c27\u6c14\u91ca\u653e\u3002\u5728\u8868\u793a\u4e2d\uff0cM\u662f\u6307Ni\u548cFe\u91d1\u5c5e\u539f\u5b50\u3002<\/p>\n
a\uff0c\u752816O\u6837\u54c1\u5236\u5907\u540eH218O\u7535\u89e3\u6db2\u4e2d\u7684\u7b2c\u4e00\u6b21\u7ebf\u6027\u626b\u63cf\u4f0f\u5b89\u6cd5\u3002\u5728\u752816<\/sup>O\u8fdb\u884c\u6837\u54c1\u5236\u5907\u540e\u7684\u7b2c\u4e00\u7535\u5316\u5b66\u7535\u4f4d\u5faa\u73af\u671f\u95f4\uff0c\u5728\u7528H2<\/sub>18<\/sup>O\u5236\u5907\u76840.1M KOH\u4e2d\uff0c\u5728\u6c27\u6c14\u91ca\u653e\u671f\u95f4\u68c0\u6d4b\u523016<\/sup>O18<\/sup>O\uff08m\/z = 34\uff09\uff08\u7ea2\u7ebf\uff09\u7684\u6821\u51c6\u8d28\u8c31\u4eea\u4fe1\u53f7\u3002\u7531\u4e8e\u7535\u89e3\u8d28\u7684\u7ec4\u6210\u800c\u6ca1\u6709\u6676\u683c\u4ea4\u6362\u800c\u9884\u671f\u768416<\/sup>O18<\/sup>O\u4fe1\u53f7\u662f\u5171\u540c\u7ed8\u5236\u7684\uff08\u7eff\u7ebf\uff09\uff0c\u5176\u662f18<\/sup>O2<\/sub>\uff08m\/z = 36\uff09\u4fe1\u53f7\u7684\u6052\u5b9a\u5206\u6570\u3002\u8fd8\u5305\u62ecm\/z = 34\u4fe1\u53f7\u7684\u6a21\u62df\uff0c\u5982\u679c\u6c27\u5316\u50ac\u5316\u5242\u6240\u542b\u7684\u603b16<\/sup>O\u76841\uff05\u57285s\uff08\u54c1\u7ea2\u8272\uff09\uff0c15s\uff08\u9752\u8272\uff09\u621645s\uff08\u84dd\u8272\uff09\u4e2d\u4e3a18<\/sup>O16<\/sup>O\u3002\u63d2\u56fe\u662fNiFeOx<\/sub>Hy<\/sub>\u7eb3\u7c73\u9897\u7c92\u4e0a\u768418<\/sup>O\u7535\u89e3\u8d28\u4e2d\u7684\u6790\u6c27\u53cd\u5e94\u7684\u793a\u610f\u56fe\u3002b\uff0c\u6765\u81ea\u540c\u4e00\u5b9e\u9a8c\u7684\u7535\u4f4d\uff08\u9ed1\u8272\uff09\u548c\u7535\u6d41\uff08\u7070\u8272\uff09\u3002c\uff0c\u5728EC-MS\u5b9e\u9a8c\uff08\u7d2b\u8272\uff09\u4e4b\u540e\u548c\u6e85\u5c04\u4e4b\u540e\uff08\u84dd\u8272\uff09\u6c89\u79ef\uff08\u7070\u8272\uff09\u6837\u54c1\u7684LEIS\u5149\u8c31\u3002<\/p>\n