{"id":102652,"date":"2017-09-21T06:30:24","date_gmt":"2017-09-20T22:30:24","guid":{"rendered":"\/\/m.iemloyee.com\/?p=102652"},"modified":"2017-09-18T20:51:20","modified_gmt":"2017-09-18T12:51:20","slug":"%e4%b8%ad%e7%a7%91%e5%a4%a7%e9%bb%84%e4%bc%9f%e6%96%b0%e5%9b%a2%e9%98%9fnat-commun-%ef%bc%9a%e5%88%a9%e7%94%a8%e9%93%9c%e7%ba%b3%e7%b1%b3%e6%99%b6%e7%a1%ae%e5%ae%9a%e4%bd%8e%e6%b8%a9%e6%b0%b4","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=102652","title":{"rendered":"\u4e2d\u79d1\u5927\u9ec4\u4f1f\u65b0\u56e2\u961fNat. Commun.\uff1a\u5229\u7528\u94dc\u7eb3\u7c73\u6676\u786e\u5b9a\u4f4e\u6e29\u6c34\u7164\u6c14\u53d8\u6362\u53cd\u5e94\u7684\u50ac\u5316\u6d3b\u6027\u4f4d\u70b9"},"content":{"rendered":"

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

\u6c34\u7164\u6c14\u53d8\u6362\uff08WGS\uff09\u53cd\u5e94\u662f\u5de5\u4e1a\u5236\u6c22\u7684\u91cd\u8981\u73af\u8282\u4e4b\u4e00\uff0c\u80fd\u6709\u6548\u964d\u4f4e\u539f\u6599\u6c14\u4e2d\u7684CO\u542b\u91cf\u5e76\u7b49\u4f53\u79ef\u7684\u63d0\u9ad8\u5176\u4e2d\u7684H2<\/sub>\u542b\u91cf\uff0c\u4ece\u800c\u9632\u6b62\u8d35\u91d1\u5c5e\u50ac\u5316\u5242\u4e2d\u6bd2\uff0c\u5e76\u63d0\u5347\u4f53\u7cfb\u7684\u5236\u6c22\u6548\u7387\u3002\u76ee\u524d\uff0c\u5de5\u4e1a\u4e0a\u4f7f\u7528\u7684\u4f4e\u6e29WGS\u50ac\u5316\u5242\u591a\u4e3a\u94dc\u57fa\u50ac\u5316\u5242\uff0c\u56e0\u6b64\u7814\u7a76\u94dc\u57fa\u50ac\u5316\u5242\u7684\u6784\u6548\u5173\u7cfb\u5c31\u5177\u6709\u91cd\u5927\u7684\u7406\u8bba\u53ca\u5e94\u7528\u4ef7\u503c\u3002\u7136\u800c\uff0c\u901a\u5e38\u91c7\u7528\u7684\u7eb3\u7c73\u9897\u7c92\u50ac\u5316\u5242\u5177\u6709\u975e\u5e38\u590d\u6742\u7684\u8868\u9762\u7ed3\u6784\uff0c\u5176\u8868\u9762\u4e0d\u540c\u79cd\u7c7b\u7684\u6d3b\u6027\u4f4d\u70b9\u5448\u73b0\u51fa\u6781\u5927\u7684\u50ac\u5316\u6d3b\u6027\u5dee\u5f02\u3002\u6b64\u5916\uff0c\u6e7f\u5316\u5b66\u6cd5\u5236\u5907\u8fc7\u7a0b\u4e2d\u5f15\u5165\u7684\u8868\u9762\u6d3b\u6027\u5242\u7b49\u7ec4\u5206\u5305\u8986\u5728\u56fa\u4f53\u50ac\u5316\u5242\u8868\u9762\uff0c\u5bf9\u6c14-\u56fa\u5f02\u76f8\u50ac\u5316\u53cd\u5e94\u9020\u6210\u4e25\u91cd\u5e72\u6270\u3002\u4e0a\u8ff0\u590d\u6742\u60c5\u51b5\u4e3a\u94dc\u57fa\u50ac\u5316\u5242\u6784\u6548\u5173\u7cfb\u7684\u7814\u7a76\u53ca\u50ac\u5316\u5242\u7684\u5408\u7406\u8bbe\u8ba1\u5e26\u6765\u4e86\u6781\u5927\u7684\u56f0\u96be\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u4e2d\u56fd\u79d1\u5b66\u6280\u672f\u5927\u5b66<\/strong>\u9ec4\u4f1f\u65b0\u6559\u6388\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u8bfe\u9898\u7ec4\u901a\u8fc7\u6c14\u76f8\u8fd8\u539f\u6cd5\u5c06\u7acb\u65b9\u4f53\uff08c-\uff09\u3001\u6b63\u516b\u9762\u4f53\uff08o-\uff09\u3001\u6b63\u5341\u4e8c\u9762\u4f53\uff08d-\uff09\u7ed3\u6784\u7684Cu2<\/sub>O\u7eb3\u7c73\u6676\u524d\u9a71\u4f53\u5206\u522b\u8f6c\u5316\u4e3ac-Cu\u3001o-Cu\u3001d-Cu\u7eb3\u7c73\u6676\uff0c\u5176\u51e0\u4f55\u7ed3\u6784\u5747\u4fdd\u6301\u4e0d\u53d8\u3002\u4ee5c-Cu\u3001o-Cu\u3001d-Cu\u7eb3\u7c73\u6676\u4f5c\u4e3a\u4f4e\u6e29WGS\u53cd\u5e94\u7684\u6a21\u578b\u50ac\u5316\u5242\uff0c\u5f97\u5230\u4ee5\u4e0b\u7ed3\u8bba\uff1a(1) \u94dc\u7eb3\u7c73\u6676\u5bf9\u4f4e\u6e29WGS\u53cd\u5e94\u7684\u50ac\u5316\u6d3b\u6027\u5f3a\u70c8\u4f9d\u8d56\u4e8e\u6676\u9762\uff0c\u5176\u50ac\u5316\u6d3b\u6027\u987a\u5e8f\u4e3a{100}\uff1e{110}\uff1e{111}\uff0c\u5373Cu{100}\u6676\u9762\u50ac\u5316\u6d3b\u6027\u6700\u5f3a\uff0c{110}\u6676\u9762\u6b21\u4e4b\uff0c\u800c{111}\u6676\u9762\u51e0\u4e4e\u6ca1\u6709\u6d3b\u6027\uff1b(2) Cu(100)\u6676\u9762\u4e0a\u7684Cu-Cux<\/sub>O\uff08x\u226510\uff09\u754c\u9762\u662f\u50ac\u5316\u4f4e\u6e29WGS\u53cd\u5e94\u7684\u6d3b\u6027\u4f4d\u70b9\uff0c\u8be5\u50ac\u5316\u5faa\u73af\u4e2d\u6240\u6709\u8868\u9762\u57fa\u5143\u53cd\u5e94\u5747\u80fd\u5728\u8be5\u4f4d\u70b9\u4e0a\u987a\u5229\u8fdb\u884c\uff1b\u800cCu(111)\u6676\u9762\u4e0a\u7684Cu-Cux<\/sub>O\uff08x\u226510\uff09\u754c\u9762\u5219\u8fc5\u901f\u5931\u6d3b\uff0c\u8fd9\u662f\u7531\u4e8e\u4f4e\u6e29WGS\u53cd\u5e94\u4e2d\u4ea7\u751f\u7684\u7532\u9178\u76d0\u4e2d\u95f4\u4ea7\u7269\u7a33\u5b9a\u5438\u9644\u5728\u8be5\u4f4d\u70b9\uff0c\u4f7f\u50ac\u5316\u5242\u4e2d\u6bd2\u3002\u6b64\u5916\uff0c\u7528\u7b49\u4f53\u79ef\u6d78\u6e0d\u6cd5\u5236\u5907\u7684ZnO\/c-Cu\u5bf9\u4f4e\u6e29WGS\u53cd\u5e94\u5177\u6709\u6781\u9ad8\u7684\u50ac\u5316\u6d3b\u6027\uff0c\u5176\u6d3b\u5316\u80fd\uff0832.4\u00b10.8 kJ\/mol\uff09\u8fdc\u4f4e\u4e8e\u5927\u591a\u6570\u5546\u4e1aCu\u7cfb\u4f4e\u53d8WGS\u50ac\u5316\u5242\uff0c\u4e3a\u50ac\u5316\u5242\u7ed3\u6784\u7684\u5408\u7406\u8bbe\u8ba1\u63d0\u4f9b\u4e86\u4f9d\u636e\u3002\u8be5\u7814\u7a76\u6210\u679c\u4ee5\u201cThe most active Cu facet for low-temperature water gas shift reaction<\/strong>\u201d\u4e3a\u9898\uff0c\u53d1\u8868\u5728Nature Communications<\/strong>\u4e0a\u3002<\/p>\n

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

\u56fe<\/strong>1. <\/strong>\u5f62\u8c8c\u53ca\u7ed3\u6784\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

(a) c-Cu2<\/sub>O\uff1b(b) o-Cu2<\/sub>O\uff1b(c) d-Cu2<\/sub>O\u7684SEM\u56fe\u50cf\u3002<\/p>\n

(d) Cu\u548cCu2<\/sub>O\u7684XRD\u56fe\u8c31\u3002<\/p>\n

(e) \u9694\u7edd\u7a7a\u6c14\u6d4b\u5f97\u7684Cu LMM AES\u80fd\u8c31\u3002<\/p>\n

(f) CO\u5438\u9644\u539f\u4f4d\u6f2b\u53cd\u5c04\u7ea2\u5916\u5149\u8c31\uff0c\u56fe\u4e2d(a1) c-Cu2<\/sub>O\uff1b(b1) o-Cu2<\/sub>O\uff1b(c1) d-Cu2<\/sub>O\uff1b(a2) c-Cu\uff1b(b2) o-Cu\uff1b(c2) d-Cu\uff0c\u6d4b\u8bd5\u6e29\u5ea6\u4e3a123 K\u3002<\/p>\n

(g1-g3) c-Cu\u7684(g1) SEM\uff1b(g2) TEM\uff1b(g3) HRTEM\u56fe\u50cf\u3002<\/p>\n

(h1-h3) o-Cu\u7684(g1) SEM\uff1b(g2) TEM\uff1b(g3) HRTEM\u56fe\u50cf\u3002<\/p>\n

(i1-i3) d-Cu\u7684(g1) SEM\uff1b(g2) TEM\uff1b(g3) HRTEM\u56fe\u50cf\u3002<\/p>\n

\u6ce8\uff1a(a-c)(g1-i1)\u56fe\u4e2d\u6807\u5c3a\u4e3a1000\u2009nm\uff0c(g2\u2013i2) \u56fe\u4e2d\u6807\u5c3a\u4e3a500\u2009nm\uff0c (g3\u2013h3) \u56fe\u4e2d\u6807\u5c3a\u4e3a2\u2009nm\u3002<\/p>\n

\u56fe<\/strong>2. WGS<\/strong>\u53cd\u5e94\u7684\u50ac\u5316\u6d3b\u6027<\/strong><\/p>\n

\"\"<\/p>\n

(a) c-Cu\u3001o-Cu\u3001d-Cu\u7684\u50ac\u5316\u53cd\u5e94\u901f\u7387\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

(b) 548K\u65f6c-Cu\u3001d-Cu\u7684\u50ac\u5316\u53cd\u5e94\u901f\u7387\u968f\u65f6\u95f4\u7684\u53d8\u5316\u3002<\/p>\n

(c) c-Cu\u3001d-Cu\u3001\u5546\u4e1aCu\/ZnO\/Al2<\/sub>O3<\/sub>\u50ac\u5316\u5242\u7684\u963f\u4f26\u5c3c\u4e4c\u65af\u66f2\u7ebf\uff0c\u4ece\u4e2d\u5f97\u5230\u4e0a\u8ff0\u4e09\u79cd\u50ac\u5316\u5242\u5728WGS\u53cd\u5e94\u4e2d\u7684\u6d3b\u5316\u80fd\u3002<\/p>\n

\u56fe<\/strong>3. WGS<\/strong>\u53cd\u5e94\u673a\u7406\u63a2\u7a76<\/strong><\/p>\n

\"\"<\/p>\n

(a)c-Cu\u3001o-Cu\u3001d-Cu\u7684\u7a0b\u5e8f\u5347\u6e29\u53cd\u5e94\uff08TPRS\uff09\u56fe\u8c31\u3002<\/p>\n

(b) WGS\u53cd\u5e94\u540ec-Cu\u3001o-Cu\u3001d-Cu\u7684C 1\u2009s XPS\u56fe\u8c31\uff0c\u53cd\u5e94\u6e29\u5ea6\u4e3a548K\uff0c\u53cd\u5e94\u8fc7\u7a0b\u4e2d\u9694\u7edd\u7a7a\u6c14\u3002<\/p>\n

(c) WGS\u53cd\u5e94\u540ec-Cu\u3001o-Cu\u3001d-Cu\u7684\u70ed\u8131\u9644\u8c31\u56fe\u3002<\/p>\n

(d) WGS\u53cd\u5e94\u540ec-Cu\u3001o-Cu\u3001d-Cu\u7684\u539f\u4f4d\u6f2b\u53cd\u5c04\u7ea2\u5916\u5149\u8c31\u3002\u53cd\u5e94\u6e29\u5ea6\u4e3a548K\uff0c\u53cd\u5e94\u540e\u5728Ar\u6c14\u4e2d\u52a0\u70ed\u5230723 K\u3002<\/p>\n

\u56fe<\/strong>4. <\/strong>\u6c34\u5206\u5b50\u5bf9<\/strong>Cu<\/strong>\u7eb3\u7c73\u6676\u7684\u6d3b\u5316\u4f5c\u7528<\/strong><\/p>\n

\"\"<\/p>\n

(a) AES\u8c31\u56fe\u7684LMM\u5cf0\u3002<\/p>\n

(b) XPS\u8c31\u56fe\u7684O 1\u2009s\u5cf0\u3002<\/p>\n

\u6ce8\uff1a\u9ed1\u8272\u66f2\u7ebf\u4e3a\u672a\u5904\u7406\u7684Cu\u7eb3\u7c73\u6676\uff0c\u7ea2\u8272\u66f2\u7ebf\u4e3a\u66b4\u9732\u5728423 K\u7684\u6c34\u84b8\u6c14\u4e2d\u7684Cu\u7eb3\u7c73\u6676\uff0c\u84dd\u8272\u66f2\u7ebf\u4e3a\u66b4\u9732\u5728523 K\u7684\u6c34\u84b8\u6c14\u4e2d\u7684Cu\u7eb3\u7c73\u6676\uff0c\u68d5\u8272\u66f2\u7ebf\u4e3a\u5148\u66b4\u9732\u5728523 K\u7684\u6c34\u84b8\u6c14\u4e2d\u518d\u66b4\u9732\u5728473 K\u7684CO\u4e2d\u7684Cu\u7eb3\u7c73\u6676\u3002<\/p>\n

\u56fe<\/strong>5. <\/strong>\u6c34\u5206\u5b50\u5728\u4e0d\u540c\u4f4d\u70b9\u5438\u9644\u5e76\u89e3\u79bb\u7684<\/strong>DFT<\/strong>\u8ba1\u7b97\u7ed3\u679c<\/strong><\/p>\n

\"\"<\/p>\n

(a-b) Cu(111) \u6676\u9762\u548c Cu(100)\u6676\u9762\u4e0a\u7684Cu2<\/sub>O\u2013Cu\u754c\u9762\u7ed3\u6784\u793a\u610f\u56fe\u3002\u5176\u4e2d\u84dd\u8272\u3001\u6a59\u8272\u3001\u7ea2\u8272\u5c0f\u7403\u5206\u522b\u8868\u793aCu\u539f\u5b50\u3001Cu2<\/sub>O\u4e2d\u7684Cu\u539f\u5b50\u3001O\u539f\u5b50\u3002<\/p>\n

(c) \u6c34\u5206\u5b50\u5728Cu2<\/sub>O\u2013Cu(111)\u754c\u9762\u3001Cu2<\/sub>O\u2013Cu(100)\u754c\u9762\u3001Cu(111)\u6676\u9762\u3001Cu(100)\u6676\u9762\u4e0a\u5438\u9644\u5e76\u5206\u89e3\u7684\u80fd\u7ea7\u56fe\u3002<\/p>\n

\u56fe<\/strong>6. WGS<\/strong>\u53cd\u5e94\u8fc7\u7a0b\u4e2d\u7684\u80fd\u7ea7\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

(a) \u5438\u9644\u5728Cu\u539f\u5b50\u4e0a\u7684CO\u4e0eCu2<\/sub>O\u2013Cu(111)\u754c\u9762\u548cCu2<\/sub>O\u2013Cu(100)\u754c\u9762\u4e0aCu2<\/sub>O\u4e2d\u7684O\u539f\u5b50\u53cd\u5e94\u7684\u80fd\u91cf\u53d8\u5316\u3002<\/p>\n

(b) Cu2<\/sub>O\u2013Cu(111)\u754c\u9762\u548cCu2<\/sub>O\u2013Cu(100)\u754c\u9762\u4e0a\u5438\u9644\u5728Cu\u539f\u5b50\u4e0a\u7684CO\u4e0e\u5438\u9644\u5728Cu2<\/sub>O\u4e0a\u7684OH\u53cd\u5e94\u7684\u80fd\u91cf\u53d8\u5316\u3002<\/p>\n

(c) Cu2<\/sub>O\u2013Cu(111)\u754c\u9762\u548cCu2<\/sub>O\u2013Cu(100)\u754c\u9762\u4e0a\u5438\u9644\u5728Cu\u539f\u5b50\u4e0a\u7684CO\u4e0e\u5438\u9644\u5728Cu\u539f\u5b50\u4e0a\u7684OH\u53cd\u5e94\u7684\u80fd\u91cf\u53d8\u5316\u3002<\/p>\n

(d) Cu2<\/sub>O\u2013Cu(111)\u754c\u9762\u548cCu2<\/sub>O\u2013Cu(100)\u754c\u9762\u4e0a\u5438\u9644\u6001CO2<\/sub>\u4e0e\u5438\u9644\u5728Cu\u539f\u5b50\u4e0a\u7684H\u539f\u5b50\u53d1\u751f\u57fa\u5143\u53cd\u5e94\u5f62\u6210\u5438\u9644\u6001HCOO\u7684\u80fd\u91cf\u53d8\u5316\u3002<\/p>\n

\u56fe<\/strong>7. ZnO\/c-Cu<\/strong>\u50ac\u5316\u5242\u7684\u5f62\u8c8c\u8868\u5f81\u53ca\u50ac\u5316\u6027\u80fd<\/strong><\/p>\n

\"\"<\/p>\n

(a) 1%wt-ZnO\/c-Cu2<\/sub>O\u7684SEM\u56fe\u50cf\uff0c\u6807\u5c3a\u4e3a1000\u2009nm\u3002<\/p>\n

(b-d) 1.67%wt-ZnO\/c-Cu\u7684(b) SEM\uff0c\u6807\u5c3a\u4e3a1000\u2009nm\uff1b(c) TEM\uff0c\u6807\u5c3a\u4e3a500\u2009nm\uff1b(d) HRTEM\u56fe\u50cf\uff0c\u6807\u5c3a\u4e3a2\u2009nm\u3002<\/p>\n

(e) 1.67%wt-ZnO\/c-Cu\u50ac\u5316WGS\u7684\u53cd\u5e94\u901f\u7387\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

(f) 1.67%wt-ZnO\/c-Cu\u50ac\u5316WGS\u53cd\u5e94\u7684\u963f\u4f26\u5c3c\u4e4c\u65af\u66f2\u7ebf\u3002<\/p>\n

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

\u8fd9\u9879\u5de5\u4f5c\u4ee5\u66b4\u9732\u4e0d\u540c\u6676\u9762\u7684\u7acb\u65b9\u4f53\u3001\u6b63\u516b\u9762\u4f53\u3001\u6b63\u5341\u4e8c\u9762\u4f53\u94dc\u7eb3\u7c73\u6676\u4f5c\u4e3a\u6a21\u578b\u50ac\u5316\u5242\uff0c\u63ed\u793a\u4e86\u4f4e\u6e29WGS\u53cd\u5e94\u4e2d\u94dc\u7684\u50ac\u5316\u6d3b\u6027\u5bf9\u6676\u9762\u7684\u5f3a\u70c8\u4f9d\u8d56\u6027\u3002\u7814\u7a76\u8868\u660e\uff0c\u94dc\u7eb3\u7c73\u6676\u50ac\u5316\u4f4e\u6e29WGS\u53cd\u5e94\u7684\u6d3b\u6027\u4f4d\u70b9\u4e3aCu-Cux<\/sub>O\uff08x\u226510\uff09\u754c\u9762\uff0c\u53ea\u6709\u5f53\u8be5\u6d3b\u6027\u4f4d\u70b9\u4f4d\u4e8eCu{100}\u6676\u9762\u4e0a\u65f6\u624d\u5448\u73b0\u51fa\u6700\u9ad8\u7684\u50ac\u5316\u6d3b\u6027\u3002\u4f46\u4e0d\u540cCu\u6676\u9762\u4e0a\u7684Cu-Cux<\/sub>O\uff08x\u226510\uff09\u754c\u9762\u5177\u6709\u4e0d\u540c\u7684\u50ac\u5316\u6d3b\u6027\u5e76\u4e0d\u662f\u56e0\u4e3a\u5176\u672c\u5f81\u6d3b\u6027\u4e0d\u540c\uff0c\u800c\u662f\u56e0\u4e3a\u5b83\u4eec\u88ab\u6bd2\u5316\u7684\u96be\u6613\u7a0b\u5ea6\u4e0d\u540c\u3002\u4ee5\u6d3b\u6027\u6700\u9ad8\u7684c-Cu\u4e3a\u8f7d\u4f53\u4e0eZnO\u590d\u5408\u5f97\u5230\u4e86\u50ac\u5316\u6d3b\u6027\u8d85\u8fc7\u5927\u591a\u6570\u5546\u4e1a\u94dc\u7cfb\u4f4e\u53d8WGS\u50ac\u5316\u5242\u7684ZnO\/c-Cu\u3002\u8be5\u7814\u7a76\u6210\u679c\u8868\u660e\uff0c\u5728\u5f02\u76f8\u50ac\u5316\u53cd\u5e94\u7814\u7a76\u4e2d\uff0c\u4ee5\u7eb3\u7c73\u6676\u4f5c\u4e3a\u6a21\u578b\u50ac\u5316\u5242\u7684\u5b9e\u9a8c\u7b56\u7565\u662f\u786e\u5b9a\u6d3b\u6027\u4f4d\u70b9\u548c\u53cd\u5e94\u673a\u7406\u7684\u6709\u6548\u624b\u6bb5\uff0c\u4ece\u800c\u4e3a\u4f18\u5316\u50ac\u5316\u5242\u7ed3\u6784\u53ca\u7814\u5236\u9ad8\u6548\u50ac\u5316\u5242\u63d0\u4f9b\u4e86\u53ef\u9760\u4f9d\u636e\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>The most active Cu facet for low-temperature water gas shift reaction <\/a>(Nat. Commun., 2017, DOI: 10.1038\/s41467-017-00620-6)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u524d\u7ebf\u738b\u948a\u9896\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

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\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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