{"id":90449,"date":"2017-07-10T06:30:06","date_gmt":"2017-07-09T22:30:06","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=90449"},"modified":"2017-07-08T08:41:27","modified_gmt":"2017-07-08T00:41:27","slug":"%e8%b0%a2%e6%af%85%e6%9c%80%e6%96%b0angew-chem-int-ed%ef%bc%9a%e9%80%9a%e8%bf%87%e5%8d%95%e5%b1%82%e7%a1%ab%e7%a1%92%e5%8c%96%e9%92%bc%e7%a6%bb%e5%9f%9f%e7%94%b5%e8%8d%b7%e6%8f%90%e9%ab%98%e4%ba%8c","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=90449","title":{"rendered":"\u8c22\u6bc5\u6700\u65b0Angew. Chem. Int. Ed\uff1a\u901a\u8fc7\u5355\u5c42\u786b\u7852\u5316\u94bc\u79bb\u57df\u7535\u8377\u63d0\u9ad8\u4e8c\u6c27\u5316\u78b3\u7535\u5316\u5b66\u8fd8\u539f\u5408\u6210\u6c14"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

\u542b\u6709\u4e00\u6c27\u5316\u78b3\u548c\u6c22\u6c14\u7684\u5408\u6210\u6c14\u662f\u5de5\u4e1a\u4e0a\u4e00\u79cd\u91cd\u8981\u7684\u539f\u6599\uff0c\u5b83\u53ef\u4ee5\u901a\u8fc7\u8d39\u6258\u5408\u6210\u8def\u7ebf\u88ab\u76f4\u63a5\u8f6c\u5316\u4e3a\u4f4e\u78b3\u7684\u70ef\u70c3\u3002\u5c3d\u7ba1\u5176\u5177\u6709\u91cd\u5927\u7684\u610f\u4e49\uff0c\u4f46\u662f\u76ee\u524d\u5408\u6210\u6c14\u4e3b\u8981\u662f\u5728\u7164\u548c\u5929\u7136\u6c14\u8fd9\u79cd\u4e0d\u53ef\u518d\u751f\u80fd\u6e90\u4e2d\u5f97\u5230\uff0c\u800c\u4e14\u6709\u9650\u7684\u8d44\u6e90\u5728\u672a\u6765\u67d0\u4e00\u5929\u4e5f\u4f1a\u6d88\u8017\u5c3d\u3002\u4e3a\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\uff0c\u6700\u8fd1\u5927\u91cf\u7684\u7535\u5316\u5b66\u50ac\u5316\u5242\u88ab\u7528\u5728\u8fdb\u884c\u4e8c\u6c27\u5316\u78b3\u548c\u6c34\u8f6c\u5316\u4e3a\u5408\u6210\u6c14\u7684\u7814\u7a76\u4e2d\u3002\u76ee\u524d\u6709\u6548\u7684\u7535\u5316\u5b66\u8fd8\u539f\u6027\u80fd\u4e3b\u8981\u4f9d\u8d56\u4e8e\u8d35\u91d1\u5c5e\uff0c\u6bd4\u5982\u91d1\uff0c\u94f6\u3002\u7136\u800c\uff0c\u8fd9\u4e9b\u81ea\u7136\u7a00\u7f3a\u4ef7\u683c\u6602\u8d35\u7684\u8d35\u91d1\u5c5e\u4e25\u91cd\u5730\u59a8\u788d\u4e86\u5176\u5728\u5546\u4e1a\u9886\u57df\u7684\u5e94\u7528\u3002\u5c42\u72b6\u534a\u5bfc\u4f53\u8fc7\u6e21\u91d1\u5c5e\u786b\u5316\u7269\uff08TMDs\uff09\u4f8b\u5982MoS2<\/sub>, MoSe2<\/sub>\u662f\u975e\u5e38\u6709\u524d\u666f\u7684\u6750\u6599\u3002\u6b64\u5916\u8003\u8651\u5230\u5176\u5177\u6709\u4f4e\u6210\u672c\uff0c\u65e0\u6bd2\u5bb3\u4ee5\u53ca\u50a8\u91cf\u4e30\u5bcc\u7b49\u4f18\u70b9\uff0cTMDs\u56e0\u5176\u76f8\u4f3c\u7684\u8fd8\u539f\u7535\u4f4d[ H2<\/sub>O\/H2<\/sub>\uff1a0 V vs. RHE\u76f8\u6bd4\u4e8eCO2<\/sub>\/CO\uff1a-0.11 V vs. RHE \uff08pH=0\uff09]\u540c\u65f6\u5177\u6709\u7535\u5316\u5b66\u8fd8\u539f\u4e8c\u6c27\u5316\u78b3\u548c\u6c34\u7684\u6f5c\u5728\u5e94\u7528\u3002\u4f46\u662f\uff0c\u4f20\u7edf\u7684TMDs\u7535\u5bfc\u7387\u5f88\u5dee\uff0c\u6d3b\u6027\u4f4d\u70b9\u5f88\u5c11\u800c\u4e14\u56fa\u6709\u6d3b\u6027\u5f88\u4f4e\uff0c\u8fd9\u4e25\u91cd\u5730\u963b\u788d\u4e86\u5176\u7535\u50ac\u5316\u6d3b\u6027\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u8fd1\u671f\u7814\u7a76\u8868\u660e\u4e09\u5143TMDs\u5408\u91d1\u76f8\u6bd4\u4e8e\u539f\u59cb\u7684\u4e8c\u5143TMDs\u80fd\u591f\u63d0\u9ad8\u7535\u50ac\u5316\u6c34\u89e3\u7684\u6027\u80fd\uff0c\u5bf9\u4e8e\u5b9e\u73b0\u63d0\u9ad8\u4e8c\u6c27\u5316\u78b3\u7535\u5316\u5b66\u8fd8\u539f\u7279\u6027\u63d0\u4f9b\u4e86\u53ef\u80fd\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u6765\u81ea\u4e2d\u56fd\u79d1\u5b66\u6280\u672f\u5927\u5b66\u7684\u8c22\u6bc5\u6559\u6388\u3001\u5b59\u6c38\u798f\u6559\u6388\u3001\u97e6\u4e16\u5f3a\u6559\u6388\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09\u7b49\u4eba<\/strong>\u5728Angew. Chem. Int. Ed<\/strong>\u4e0a\u53d1\u6587\uff0c\u9898\u4e3a \u201cCarbon Dioxide Electroreduction into Syngas Boosted by a Partially Delocalized Charge in Molybdenum Sulfide Selenide Alloy Monolayers\u201d<\/strong> .\u7814\u7a76\u4eba\u5458\u901a\u8fc7\u5b9e\u9a8c\u548c\u8ba1\u7b97\u4e24\u4e2a\u65b9\u9762\u9610\u8ff0\u4e86\u90e8\u5206\u79bb\u57df\u7535\u8377\u80fd\u591f\u63d0\u9ad8\u7535\u50ac\u5316\u6027\u80fd\uff0c\u5bf9\u4e8eCO2<\/sub>\u548cH2<\/sub>O\u7535\u5316\u5b66\u8fd8\u539f\u4e3a\u5408\u6210\u6c14\u5177\u6709\u5f88\u5927\u7684\u524d\u666f\u3002\u540c\u65f6\u5355\u5c42MoSeS\u5408\u91d1\u5c55\u5728-1.15V\u4e0b\u5c55\u73b0\u51fa\u7684\u9ad8\u7535\u6d41\u5bc6\u5ea6\uff0843mAcm-2<\/sup>\uff09\u5206\u522b\u662f\u5355\u5c42MoS2<\/sub>\u548c\u5355\u5c42MoSe2<\/sub>\u76842.7\u500d\u548c1.3\u500d\u3002\u800c\u4e14\uff0c\u5355\u5c42MoSeS\u5408\u91d1\u5728-1.15V\u4e0b\u7535\u5316\u5b66\u8fd8\u539fCO\u4ea7\u7269\u7684\u6cd5\u62c9\u7b2c\u6548\u7387\uff0845.2%\uff09\uff0c\u8981\u6bd4\u5355\u5c42MoS2<\/sub> (16.6%) \u548c\u5355\u5c42MoSe2<\/sub> (30.5%) \u9ad8\u5f88\u591a\u3002<\/p>\n

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

\u56fe1 \u5355\u5c42MoS2<\/sub>\u3001MoSe2<\/sub>\u3001MoSeS\u7684DFT\uff0cDOS\u8ba1\u7b97\u56fe\u8c31<\/strong><\/p>\n

\"\"<\/p>\n

\u6001\u5bc6\u5ea6\u8ba1\u7b97\uff1aA) \u5355\u5c42MoSeS\u5408\u91d1\uff0cD) \u5355\u5c42MoS2<\/sub>\uff0c G) \u5355\u5c42MoSe2<\/sub>.<\/p>\n

\u5bfc\u5e26\u8fb9\u7535\u8377\u5bc6\u5ea6\u5206\u5e03\uff08\u9ec4\u8272\u533a\u57df\uff09\uff1aB) \u5355\u5c42MoSeS \u5408\u91d1\uff0cE) \u5355\u5c42MoS2<\/sub>\uff0cH) MoSe2<\/sub> monolayer.<\/p>\n

\u6676\u4f53\u7ed3\u6784\uff1aC) \u5355\u5c42MoSeS\u5408\u91d1\uff0cF) \u5355\u5c42MoS2<\/sub>, I) \u5355\u5c42MoSe2<\/sub>.<\/p>\n

\u56fe2 \u5355\u5c42MoSeS\u5408\u91d1\u754c\u9762\u751f\u6210\u793a\u610f\u56fe\u4ee5\u53ca\u7ed3\u6784\u56fe\u8c31<\/strong><\/p>\n

\"\"<\/p>\n

A) \u5355\u5c42MoSeS\u5408\u91d1\u5728\u6cb9\/\u6c34\u754c\u9762\u5408\u6210\u7684\u793a\u610f\u56fe.<\/p>\n

\u5355\u5c42MoSeS\u5408\u91d1\u7684\u7279\u6027:<\/p>\n

B) TEM\u56fe, \u6bd4\u4f8b\u5c3a: 100 nm;<\/p>\n

C) HRTEM\u56fe, \u6bd4\u4f8b\u5c3a: 1 nm;<\/p>\n

D) \u73af\u5f62\u6697\u573a\u900f\u5c04\u7535\u955c\u56fe\u548c\u76f8\u5e94\u5143\u7d20\u6620\u5c04\u56fe\u8c31\uff0c\u6bd4\u4f8b\u5c3a\uff1a200nm;<\/p>\n

E) AFM\u56fe, \u6bd4\u4f8b\u5c3a: 50 nm;<\/p>\n

F) \u76f8\u5e94\u7684\u9ad8\u5ea6\u5256\u9762; \u56feF\u4e2d\u76841\u548c2\u5206\u522b\u76f8\u5bf9\u5e94\u4e8e\u56feE\u4e2d\u76841\u548c2;<\/p>\n

G)\u6cbf[001]\u65b9\u5411\u7684\u516d\u65b9\u5355\u5c42MoSeS\u5408\u91d1\u7684\u6676\u4f53\u7ed3\u6784.<\/p>\n

\u56fe3 \u5355\u5c42MoS2<\/sub>\u3001MoSe2<\/sub>\u3001MoSeS\u7684X\u5c04\u7ebf\u5438\u6536\u7cbe\u7ec6\u7ed3\u6784\u56fe\u8c31\uff08XAFS\uff09\u548c\u5ef6\u4f38X\u5c04\u7ebf\u5438\u6536\u7cbe\u7ec6\u7ed3\u6784\u56fe\u8c31(EXAFS)<\/strong><\/p>\n

\"\"<\/p>\n

A) Mo K-\u8fb9\u5ef6\u4f38XAFS\u632f\u8361\u51fd\u6570(k)<\/p>\n

B) \u76f8\u5e94\u7684\u5085\u91cc\u53f6\u53d8\u6362FT((k)): \u5355\u5c42MoSeS\u5408\u91d1(\u7ea2\u5708), \u5355\u5c42MoS2<\/sub> (\u9ed1\u8272\u4e09\u89d2), \u5355\u5c42MoSe2<\/sub> (\u84dd\u8272\u65b9\u5757), MoS2<\/sub> \u5757\u4f53 (\u9ed1\u8272 \u5b9e\u7ebf) \u548c MoSe2<\/sub> \u5757\u4f53 (\u84dd\u8272\u865a\u7ebf).<\/p>\n

\u56fe4 \u5355\u5c42MoS2<\/sub>\u3001MoSe2<\/sub>\u3001MoSeS\u7684\u7535\u5316\u5b66\u8fd8\u539fCO2<\/sub>\u7279\u6027<\/strong><\/p>\n

\"\"<\/p>\n

A) CO2<\/sub> \u9971\u548c\u6eb6\u6db2\u4e2d\u7684\u7ebf\u6027\u626b\u63cf\u4f0f\u5b89\u66f2\u7ebf;<\/p>\n

B) 2.5\u5c0f\u65f6\u4e0d\u540c\u504f\u538b\u4e0b\u7684CO\u6cd5\u62c9\u7b2c\u6548\u7387;<\/p>\n

C) \u5728-1.15V\u76f8\u5bf9\u4e8e\u53ef\u9006\u6c22\u7535\u6781\u7535\u52bf\u4e0b\u7684\u8ba1\u65f6\u7535\u6d41\u6cd5\u7ed3\u679c;<\/p>\n

D) CO (\u5b9e\u5fc3\u67f1) \u548c H2<\/sub> (\u7a7a\u5fc3\u67f1) \u4ea7\u91cf\u572815V\u76f8\u5bf9\u4e8e\u53ef\u9006\u6c22\u7535\u6781\u7535\u52bf. \u56fe(B)\u4e2d\u7684\u8bef\u5dee\u7ebf\u4ee3\u8868\u76f8\u540c\u6837\u54c1\u7684\u4e94\u6b21\u72ec\u7acb\u6d4b\u8bd5\u7684\u6807\u51c6\u5dee.<\/p>\n

\u56fe5 CO\u5408\u6210\u673a\u7406<\/strong><\/p>\n

\"\"<\/p>\n

A) \u5728298K\u4e0b\u7684CO2<\/sub>\u5438\u9644\u7b49\u6e29\u7ebf;<\/p>\n

B) \u7d2b\u5916\u5149\u7535\u5b50\u56fe\u8c31\u7684\u4e8c\u6b21\u7535\u5b50\u4e2d\u65ad;<\/p>\n

C) CO-TPD\u6d4b\u8bd5;<\/p>\n

D)\u8ba1\u7b97\u5f97\u5230\u7684CO2<\/sub>\u7535\u5316\u5b66\u8fd8\u539f\u4e3aCO\u7684\u81ea\u7531\u80fd\u7ea7\u56fe;<\/p>\n

E)\u5728\u5355\u5c42MoSeS\u5408\u91d1\u4e0aCO\u5408\u6210\u673a\u5236\u793a\u610f\u56fe. \u53ea\u8868\u793a\u4e86Mo\u7684\u7535\u8377\u5bc6\u5ea6\u548c\u5438\u9644\u7684\u4e2d\u95f4\u7269\uff0c\u7701\u7565\u4e86\u7535\u5b50.<\/p>\n

\u3010\u603b\u7ed3\u3011<\/strong><\/p>\n

\u7814\u7a76\u4eba\u5458\u9996\u6b21\u63d0\u51fa\u4e00\u79cd\u7406\u60f3\u7684\u4e09\u5143\u5355\u5c42TMDs\u5408\u91d1\u6765\u63ed\u5f00\u63d0\u9ad8\u7535\u50ac\u5316\u6027\u80fd\u7684\u672c\u8d28\u3002\u5b9e\u73b0\u4e86\u5355\u5c42MoSeS\u5408\u91d1\u7684\u6210\u529f\u5236\u5907\uff0c\u540c\u6b65\u8f90\u5c04XAFS\u7ed3\u679c\u53d1\u73b0\u4e86\u5176\u7f29\u77ed\u7684Mo-S\u952e\u548c\u52a0\u957f\u7684Mo-Se\u952e,\u540c\u65f6DFT\u8ba1\u7b97\u9610\u660e\u4e86\u5728\u5bfc\u5e26\u8fb9DOS\u7684\u5347\u9ad8\u3002\u5728\u94bc\u539f\u5b50\u5468\u56f4\u4e0d\u5e73\u8861\u7684\u7535\u8377\u4e0d\u4ec5\u5bf9\u7a33\u5b9a\u76f8\u90bb\u94bc\u539f\u5b50\u4e0a\u7684COOH*\u4e2d\u95f4\u4f53\u6709\u5229\uff08\u901a\u8fc7\u5b83\u7684\u6700\u8d1f\u7684\u5f62\u6210\u80fd\u6765\u8bc1\u5b9e\uff09,\u800c\u4e14\u901a\u8fc7\u964d\u4f4e\u94bc\u7684d\u8f68\u9053\u548cCO*\u4e2d\u7684\u78b3\u7684p\u8f68\u9053\u7684\u91cd\u5408\u6765\u4fc3\u8fdbCO\u89e3\u5438\u6b65\u7684\u9650\u901f\uff0c\u901a\u8fc7\u5728\u5355\u5c42MoSeS\u5408\u91d1\u4e0aCO\u6700\u4f4e\u7684\u89e3\u5438\u6e29\u5ea6\/\u7535\u52bf\u6765\u8bc1\u660e\u3002\u56e0\u6b64\uff0c\u5355\u5c42MoSeS\u5408\u91d1\u5728-1.15V\u76f8\u5bf9\u4e8e\u53ef\u9006\u6c22\u7535\u6781,\u5c55\u73b0\u51fa\u4e86\u7535\u6d41\u5bc6\u5ea643mAcm-2<\/sup>, \u662f\u5355\u5c42MoS2<\/sub> monolayers \u548c\u5355\u5c42MoSe2<\/sub> \u76842.7\u500d\u548c1.3\u500d\u3002\u540c\u65f6\uff0c\u5355\u5c42MoSeS\u5408\u91d1\u5728-1.15V\u76f8\u5bf9\u4e8e\u53ef\u9006\u6c22\u7535\u6781,\u5f97\u5230\u4e86\u6700\u9ad8\u768445.2%\u7684CO\u4ea7\u7269\u7684\u6cd5\u62c9\u7b2c\u6548\u7387\uff0c\u8981\u6bd4\u5355\u5c42MoS2<\/sub> (16.6%) \u548c\u5355\u5c42MoSe2<\/sub> (30.5%) \u9ad8\u5f88\u591a\u3002\u8fd9\u9879\u5de5\u4f5c\u901a\u8fc7\u5b9e\u9a8c\u548c\u8ba1\u7b97\u4e24\u4e2a\u65b9\u9762\u9610\u8ff0\u4e86\u90e8\u5206\u79bb\u57df\u7535\u8377\u80fd\u591f\u63d0\u9ad8\u7535\u50ac\u5316\u6027\u80fd\uff0c\u5bf9\u4e8eCO2<\/sub>\u548cH2<\/sub>O\u7535\u5316\u5b66\u8fd8\u539f\u4e3a\u5408\u6210\u6c14\u5177\u6709\u5f88\u5927\u7684\u524d\u666f\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Carbon Dioxide Electroreduction into Syngas Boosted by a Partially Delocalized Charge in Molybdenum Sulfide Selenide Alloy Monolayers<\/a> (Angew. Chem. Int. Ed, 2017, DOI: 10.1002\/anie.201704928)<\/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\u7f16\u8f91\u90e8<\/a>\u3002\u6750\u6599\u6d4b\u8bd5\uff0c\u6570\u636e\u5206\u6790\uff0c\u4e0a<\/strong>\u6d4b\u8bd5\u8c37<\/strong><\/a>\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

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