{"id":196282,"date":"2020-02-24T06:34:42","date_gmt":"2020-02-23T22:34:42","guid":{"rendered":"\/\/m.iemloyee.com\/?p=196282"},"modified":"2020-02-23T19:39:15","modified_gmt":"2020-02-23T11:39:15","slug":"jacs%ef%bc%9a%e5%8d%95%e5%8e%9f%e5%ad%90%e7%a9%ba%e4%bd%8d%e7%bc%ba%e9%99%b7%e5%bc%95%e5%8f%91mos2%e9%ab%98%e6%95%88%e6%9e%90%e6%b0%a2","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=196282","title":{"rendered":"JACS\uff1a\u5355\u539f\u5b50\u7a7a\u4f4d\u7f3a\u9677\u5f15\u53d1MoS2\u9ad8\u6548\u6790\u6c22"},"content":{"rendered":"

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

\u7f3a\u9677\u5de5\u7a0b\u5e7f\u6cdb\u5e94\u7528\u4e8e\u8fc7\u6e21\u91d1\u5c5e\u786b\u65cf\u5316\u5408\u7269\uff08TMDs\uff09\u4e2d\uff0c\u65e8\u5728\u5b9e\u73b0\u5176\u7535\u3001\u5149\u3001\u78c1\u3001\u50ac\u5316\u7b49\u6027\u80fd\u7684\u8c03\u8282\u3002\u7a7a\u4f4d\u88ab\u8ba4\u4e3a\u662f\u4e00\u79cd\u6781\u5176\u5fae\u5999\u7684\u7f3a\u9677\uff0c\u53ef\u7075\u6d3b\u6709\u6548\u5730\u8c03\u63a7\u5404\u79cd\u50ac\u5316\u53cd\u5e94\u7684\u6027\u80fd\u3002\u7136\u800c\uff0c\u7a7a\u4f4d\u7684\u5206\u5e03\u4e0e\u6d53\u5ea6\u5bf9\u50ac\u5316\u6027\u80fd\u7684\u534f\u540c\u5f71\u54cd\u4ecd\u7136\u6a21\u7cca\u4e0d\u6e05\uff0c\u4ecd\u6709\u5f85\u6df1\u5165\u7814\u7a76\u3002<\/p>\n

\u3010\u7814\u7a76\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u5317\u79d1\u5927\u5f20\u8dc3\u9662\u58eb\u4e0e\u5eb7\u5353\u526f\u6559\u6388\u5728JACS\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a\u201cSingle-atom vacancy defect to trigger high-efficiency hydrogen evolution of MoS2<\/sub>\u201d\u7684\u6587\u7ae0\u3002\u4f5c\u8005\u9996\u5148\u901a\u8fc7\u9ad8\u901a\u91cf\u8ba1\u7b97\uff0c\u5728\u4e00\u7cfb\u5217\u7684MoS2<\/sub>\u6790\u6c22\u6a21\u578b\u4e2d\u521d\u6b65\u786e\u5b9a\u4e86\u786b\u7a7a\u4f4d\uff08S\u7a7a\u4f4d\uff09\u5728\u6d53\u5ea6\u548c\u5206\u5e03\u4e0a\u7684\u6700\u4f73\u72b6\u6001\u3002\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\uff0c\u4f5c\u8005\u91c7\u7528\u4e86\u4e00\u79cd\u7b80\u5355\u3001\u6e29\u548c\u7684\u8fc7\u6c27\u5316\u6c22\u5316\u5b66\u523b\u8680\u65b9\u6cd5\uff0c\u5728MoS2<\/sub>\u7eb3\u7c73\u7247\u8868\u9762\u5f15\u5165\u5747\u5300\u5206\u5e03\u7684\u5355S\u7a7a\u4f4d\u3002\u901a\u8fc7\u5bf9\u523b\u8680\u65f6\u95f4\u3001\u523b\u8680\u6e29\u5ea6\u548c\u523b\u8680\u6db2\u6d53\u5ea6\u7684\u7cfb\u7edf\u8c03\u8282\uff0c\u5b9e\u73b0\u4e86S\u7a7a\u4f4d\u72b6\u6001\u7684\u7efc\u5408\u8c03\u63a7\u3002\u4f18\u5316\u540e\u7684\u6700\u4f73\u6790\u6c22\u6027\u80fd\u8868\u73b0\u4e3a\uff1aTafel\u659c\u7387\u4e3a48 mV dec-1<\/sup>\uff0c\u8fc7\u7535\u4f4d\u4e3a131 mV\uff0810 mV cm-2<\/sup>\uff09\uff0c\u5145\u5206\u8bf4\u660e\u4e86\u5355\u539f\u5b50\u578bS\u7a7a\u4f4d\u76f8\u5bf9\u4e8e\u56e2\u805a\u578bS\u7a7a\u4f4d\u5728\u7535\u50ac\u5316\u6027\u80fd\u8c03\u63a7\u65b9\u9762\u7684\u4f18\u8d8a\u6027\u3002\u8be5\u7b56\u7565\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u5f25\u8865\u4e86\u7cbe\u786e\u7406\u8bba\u6027\u8bbe\u8ba1\u4e0e\u5b9e\u9645\u5b9e\u9a8c\u7ed3\u679c\u4e4b\u95f4\u7684\u5dee\u8ddd\uff0c\u5c06\u7f3a\u9677\u5de5\u7a0b\u62d3\u5c55\u5230\u66f4\u590d\u6742\u3001\u6df1\u5165\u7684\u5c42\u6b21\uff0c\u4ece\u800c\u8fdb\u4e00\u6b65\u91ca\u653e\u7535\u50ac\u5316\u6027\u80fd\u63d0\u5347\u7684\u6f5c\u529b\u3002<\/p>\n

\u3010\u56fe\u6587\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u56fe<\/strong>1 <\/strong><\/p>\n

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

a\uff09\u5177\u6709\u4e0d\u540cS\u7a7a\u4f4d\u6001\u7684MoS2<\/sub>\u6240\u5bf9\u5e94\u7684\u5409\u5e03\u65af\u81ea\u7531\u80fd\u3002\u63d2\u56fe\uff1a\u76f8\u5e94\u7684MoS2<\/sub>\u6a21\u578b\uff0c\u5176\u4e2dMo\u539f\u5b50\u548cS\u539f\u5b50\u5206\u522b\u7528\u6570\u5b571-16\u548c\u5b57\u6bcdA-P\u8868\u793a\uff1b<\/p>\n

b\uff09\u5206\u522b\u5177\u6709\u6d53\u5ea6\u4e3a0-18.75%\u7684\u5355S\u7a7a\u4f4d\u7684MoS2<\/sub>\u6240\u5bf9\u5e94\u7684DOS\u56fe\uff0cc\uff09\u5177\u6709\u6d53\u5ea6\u4e3a12.50%\u7684\u4e0d\u540c\u5206\u5e03\u7c7b\u578bS\u7a7a\u4f4d\u7684MoS2<\/sub>\u6240\u5bf9\u5e94\u7684DOS\u56fe\u3002<\/p>\n

\u56fe<\/strong>2<\/strong><\/p>\n

\"\"<\/p>\n

a\uff09 \u5316\u5b66\u8680\u523b\u6cd5\u5f15\u5165\u5355S\u7a7a\u4f4d\u7684\u5b9e\u9a8c\u6d41\u7a0b\u56fe\uff1b<\/p>\n

b-e\uff09P-MoS2<\/sub>\u548cMoS2<\/sub>-60s\u7684\u626b\u63cf\u7535\u955c\u548c\u9ad8\u5206\u8fa8\u900f\u5c04\u7535\u955c\u56fe\u50cf\uff1b<\/p>\n

f-g\uff09\u5355\u5c42MoS2<\/sub>\u7684\u7403\u5dee\u900f\u5c04\u7535\u955c\u56fe\uff08STEM\uff09\uff1a\u9ec4\u8272\u865a\u70b9\u5706\u5708\u4ee3\u8868S\u7a7a\u4f4d\uff0cg\u4e2d\u4e24\u539f\u5b50\u5f3a\u5ea6\u7ebf\u6027\u5206\u5e03\u56fe\u5206\u522b\u5bf9\u5e94f\u4e2d\u7d2b\u8272\u77e9\u5f62\u533a\u57df\uff1b<\/p>\n

h\uff09P-MoS2<\/sub>\u548c\u7ecf\u4e0d\u540c\u65f6\u95f4\u523b\u8680\u540e\u7684MoS2<\/sub>\u6837\u54c1\u7684EPR\u8c31\u6bd4\u8f83\u3002<\/p>\n

\u56fe<\/strong>3<\/strong><\/p>\n

\"\"<\/p>\n

a-b\uff09P- MoS2<\/sub>\u548cMoS2<\/sub> -x s\uff08x:10-150\uff09\u7684X\u5c04\u7ebf\u884d\u5c04\u56fe\u548c\u62c9\u66fc\u5149\u8c31\uff1b<\/p>\n

c\uff09P-MoS2<\/sub>\u548cMoS2<\/sub>-60s\u7684\u9ad8\u5206\u8fa8\u7387Mo 3d XPS\uff1bd\uff09P-MoS2<\/sub>\u548cMoS2<\/sub>-60s\u7684\u9ad8\u5206\u8fa8\u7387S 2p XPS\u8c31\uff1be\uff09S L\u8fb9\u7684\u540c\u6b65\u8f90\u5c04\u56fe\u8c31\uff08XANES\uff09\u3002<\/p>\n

\u56fe<\/strong>4 <\/strong>\u7535\u5316\u5b66\u6027\u80fd<\/strong><\/p>\n

\"\"<\/p>\n

a\uff09HER\u6781\u5316\u66f2\u7ebf\uff08LSV\uff09\uff0c\u626b\u901f\u4e3a2 mV s-1<\/sup>\uff1b<\/p>\n

b\uff09\u76f8\u5e94\u7684\u5854\u83f2\u5c14\u66f2\u7ebf\u56fe\uff1b<\/p>\n

c\uff09 Tafel\u659c\u7387\u548c\u8fc7\u7535\u4f4d\u503c\uff08\u7535\u6d41\u5bc6\u5ea6\uff1a10 mA cm-2<\/sup>\uff09\u7684\u6bd4\u8f83\uff1b<\/p>\n

d\uff09 \u7535\u5316\u5b66\u963b\u6297\u8c31\uff08EIS\uff09\uff1b<\/p>\n

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f\uff09 MoS2<\/sub>-60s\u6837\u54c1\u57280.5 M H2<\/sub>SO4<\/sub>\u4e2d\u8fdb\u884c1000\u6b21CV\u5faa\u73af\u626b\u524d\u540e\u7684LSV\u66f2\u7ebf\u5bf9\u6bd4\uff08\u626b\u901f\uff1a50 mV\/s\uff09\uff0c\u5185\u63d2\u56fe\uff1a\u7535\u6d41\u5bc6\u5ea6\u4e3a10 mA cm-2<\/sup>\u7684\u8ba1\u65f6\u7535\u538b\uff08CP\uff09\u7a33\u5b9a\u6027\u5b9e\u9a8c\u3002<\/p>\n

\u56fe<\/strong>5<\/strong><\/p>\n

\"\"<\/p>\n

a\uff09P-MoS2<\/sub>\u3001MoS2<\/sub>-FGJK\u548cMoS2<\/sub>-EGOM\u6a21\u578b\u7684\u7535\u5b50\u5bc6\u5ea6\u5dee\u5206\u4fef\u89c6\u56fe\u548c\u4fa7\u89c6\u56fe\uff1b<\/p>\n

b\uff09\u5bf9\u5e94\u7684Mo\u539f\u5b50\u7684d\u5e26\u4e2d\u5fc3\uff08PDOS\uff09\u3002<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u7b80\u8a00\u4e4b\uff0c\u7814\u7a76\u8005\u5148\u901a\u8fc7\u7406\u8bba\u9884\u6d4b\uff0c\u5e76\u5728\u5b9e\u9a8c\u4e0a\u5b9e\u73b0\u4e86MoS2<\/sub>\u4e2dS\u7a7a\u4f4d\u6d53\u5ea6\u548c\u5206\u5e03\u7684\u534f\u540c\u8c03\u63a7\uff0c\u5927\u5e45\u63d0\u9ad8\u4e86HER\u6027\u80fd\u3002\u901a\u8fc7\u4f7f\u7528H2<\/sub>O2<\/sub>\u5316\u5b66\u523b\u8680\u6cd5\u8fd9\u4e00\u7b80\u4fbf\u7cbe\u786e\u7684S\u7a7a\u4f4d\u526a\u88c1\u7b56\u7565\uff0c\u4f5c\u8005\u5728MoS2<\/sub>\u8868\u9762\u4e0a\u5f15\u5165\u4e86\u5747\u5300\u5206\u5e03\u7684\u5355S\u7a7a\u4f4d\uff0c\u5b9e\u73b0\u4e86\u4e0e\u7406\u8bba\u9884\u6d4b\u826f\u597d\u7b26\u5408\u7684\u7a7a\u4f4d\u72b6\u6001\u4ee5\u53caHER\u6027\u80fd\u7684\u6709\u529b\u8c03\u63a7\u3002\u4f18\u5316\u540e\u7684\u6700\u4f73HER\u6027\u80fd\u8868\u73b0\u4e3a\uff1aTafel\u659c\u7387\u4e3a48 mV dec-1<\/sup>\uff0c\u8fc7\u7535\u4f4d\u4e3a131 mV\uff0810 mA cm-2<\/sup>\uff09\u3002\u6b64\u5916\uff0c\u8be5\u7814\u7a76\u53d1\u73b0\u5355\u539f\u5b50\u578bS\u7a7a\u4f4d\u76f8\u5bf9\u4e8e\u56e2\u805a\u578bS\u7a7a\u4f4d\u7684\u4f18\u8d8a\u6027\u6e90\u81ea\u66f4\u6709\u6548\u7684\u8868\u9762\u7535\u5b50\u7ed3\u6784\u8c03\u63a7\u3002\u4ece\u7a7a\u4f4d\u6d53\u5ea6\u548c\u7a7a\u4f4d\u5206\u5e03\u4e24\u4e2a\u65b9\u9762\u534f\u540c\u8c03\u8282\u50ac\u5316\u6027\u80fd\u8fd9\u4e00\u7b56\u7565\uff0c\u62d3\u5bbd\u4e86\u7a7a\u4f4d\u8bbe\u8ba1\u601d\u8def\uff0c\u5e76\u53ef\u8fdb\u4e00\u6b65\u6269\u5c55\u5e94\u7528\u5230\u5176\u4ed6\u7c7b\u578b\u7684TMDs\u6750\u6599\u4ee5\u53caHER\u4ee5\u5916\u7684\u5176\u4ed6\u4f17\u591a\u50ac\u5316\u53cd\u5e94\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Single-atom vacancy defect to trigger high-efficiency hydrogen evolution of MoS<\/a>2<\/sub>. 2020, JACS, doi: 10.1021\/jacs.9b12113.<\/p>\n

\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

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