 | 濉戞枡 | 姍¤兌 | 綰ょ淮 | 娑傛枡涓庢補澧?/a> | 鑳剁矘鍓?/a> | 澶嶅悎鏉愭枡 | 鐭沖寲 | 鍖栧伐 | 浠櫒浠〃 | 鏂頒駭涓?/a> | 涓撻 | 榪斿洖棣栭〉 |
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| 濉戞枡 | 姍¤兌 | 綰ょ淮 | 娑傛枡涓庢補澧?/a> | 鑳剁矘鍓?/a> | 澶嶅悎鏉愭枡 | 鐭沖寲 | 鍖栧伐 | 浠櫒浠〃 | 鏂頒駭涓?/a> | 涓撻 | 榪斿洖棣栭〉 |
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璐甸噾灞?span style="font-family:;">Pt鍥犲叾鍏鋒湁鍚堥傜殑璐圭背鑳界駭鑰岃鐢ㄤ綔甯哥敤鐨勫姪鍌寲鍓傦紝鍏鋒湁媧繪ч珮銆佺ǔ瀹氭уソ絳変紭鍔褲備綔涓哄姪鍌寲鍓傦紝Pt鐨勫寲瀛︾姸鎬佸鍏夊偓鍖栧墏鐨勬瀽姘㈡椿鎬ф湁鏄捐憲褰卞搷錛屼絾榪欑褰卞搷灝氭湭寰楀埌娣卞叆鐮旂┒銆傛洿涓洪噸瑕佺殑鏄紝浜嗚ВPt鍦ㄥ厜鍌寲鍙嶅簲榪囩▼涓殑鐪熷疄鎬ц川錛屽彲浠ヤ負鏋勫緩鍏鋒湁楂樻椿鎬х殑鍏夊偓鍖栧墏鎻愪緵鏂扮殑鎬濊礬銆?/span> 榪戞湡錛屼腑鍥界煶娌瑰ぇ瀛︼紙鍖椾含錛夌帇闆呭悰鍓爺絀跺憳璇鵑緇勪笌娓呭崕澶у鏈辨案娉曟暀鎺堝湪銆?/span>Chemical Engineering Journal銆?/span>鏈熷垔涓婂彂琛ㄤ簡棰樹負鈥?/span>Boosting photocatalytic hydrogen evolution via regulating Pt chemical states鈥濈殑鏂囩珷錛?span style="font-family:;">DOI錛?/span>10.1016/j.cej.2022.136334錛夈傛湰璁烘枃鎻愬嚭浜嗕竴縐嶆湁鏁堢殑絳栫暐錛岄氳繃璋冭妭Pt鐨勫寲瀛︾姸鎬佹潵澶у箙搴︽彁楂?/span>Pt/g-C3N4鍏夊偓鍖栧墏鐨勪駭姘㈡ц兘銆傛枃涓埗澶囦簡涓嶅悓Pt0鍚噺鐨?/span>Pt/g-C3N4鍌寲鍓傦紝鍙戠幇鎻愰珮Pt0鍚噺鍙互澶у箙鎻愰珮鍏夎В姘翠駭姘㈡椿鎬с傚師浣嶇孩澶栧厜璋卞拰DFT鐞嗚璁＄畻璇佹槑錛屾皵姘?/span>澶勭悊浣跨數瀛愪粠g-C3N4鐨?/span>N鍘熷瓙杞Щ鍒?/span>Pt2 涓?/span>錛屼粠鑰屽鍔犱簡Pt0鐗╃鐨勬暟閲忋?/span>Pt0鐗╃鐨勫ぇ閲忕敓鎴愭湁鍒╀簬鍔犻熷厜鐢熺數鑽風殑鍒嗙銆傛澶栵紝Pt0姣?/span>Pt2 鍏鋒湁鏇翠綆鐨勬阿姘斿惛闄勮兘錛屾湁鍒╀簬姘㈡皵鐨勬孩鍑恒傚洜姝わ紝鍏鋒湁楂樻瘮渚?/span>Pt0鐨勫厜鍌寲鍓傚叿鏈夋洿楂樼殑浜ф阿媧繪с?/span>
鍥?/span>2 媧繪ф祴璇曘傦紙a錛夋牱鍝佸湪鍙鍏夛紙位 鈮?420 nm錛変笅鐨勫厜鍌寲浜ф阿閫熺巼銆傦紙b錛?/span>1.0%-Pt/CN- BH-H鐨勫厜鍌寲浜ф阿寰幆瀹為獙銆傦紙c錛?/span>1.0%-Pt/CN-P鍜?/span>1.0%-Pt/CN-BH-H鍦?/span>420鍜?/span>450 nm澶勭殑鍗曟嘗闀胯〃瑙傞噺瀛愭晥鐜囥?/span>錛?/span>d錛変笉鍚?/span>Pt/g-C3N4澶嶅悎鏉愭枡鍏夊偓鍖栦駭姘㈤熺巼鐨勬瘮杈冦?/span>
涓轟簡鐮旂┒涓嶅悓Pt鐗╃錛?/span>Pt2 鍜?/span>Pt0錛?/span>涓?/span>g-C3N4涔嬮棿鐨勭數鑽峰垎紱繪晥鐜囷紝鎴戜滑嫻嬮噺浜?/span>1.0%-Pt/CN-BH-H鍜?/span>1.0%-Pt/CN-P鍦ㄥ彲瑙佸厜鏉′歡涓嬬殑鍘熶綅綰㈠鍏夎氨銆?/span>涓?/span>1.0%-Pt/CN-BH-H鍦ㄩ粦鏆楁潯浠朵笅鐩稿杈冧綆鐨?/span>宄?/span>寮虹浉姣旓紝闅忕潃鍏夌収鏃墮棿鐨勫鍔狅紝鐗瑰緛宄版樉钁楁彁楂?/span>錛?/span>鍥?/span>3a錛?/span>銆?/span>822 cm-1澶勭殑宄板綊鍥犱簬涓冨棯鐜殑浼哥緝鎸姩錛?/span>886 cm-1澶勭殑宄板綊鍥犱簬N-H閿殑寮洸鎸姩銆?/span>鍦?/span>1489鍜?/span>1710 cm-1闄勮繎鐨勫嘲鍒嗗埆瀵瑰簲浜庢潅鐜腑鐨?/span>-C=N鍜?/span>N-C=N錛岃屽湪1338 cm-1闄勮繎鐨勫嘲鍒欐潵婧愪簬-CN鐨勪幾緙┿傞殢鐫鍏夌収鏃墮棿鐨勫鍔狅紝宄?/span>鐨?/span>寮哄害鏄庢樉澧炲ぇ錛屽嘲浣嶇疆淇濇寔涓嶅彉銆傝繖浜涚粨鏋滆〃鏄庯紝1.0%-Pt/CN-BH-H鏍峰搧涓?/span>g-C3N4鐨勭粨鏋勫拰鍖栧閿湪鍙鍏?/span>鐓у皠涓嬬敱浜庡己鐑堢殑鐢靛瓙浼犻掕屽彂鐢熸槑鏄懼彉鍖?/span>銆備負浜嗘瘮杈冿紝鎴戜滑榪樼爺絀朵簡1.0%-Pt/CN-P鏍峰搧錛?/span>鍥?/span>3b錛?/span>銆?/span>1.0%-Pt/CN-P娌℃湁鏄庢樉鐨勫嘲鐨?/span>鍙?/span>鍖?/span>錛岃繖鍙兘鏄敱浜?/span>Pt2 涓?/span>g-C3N4涔嬮棿鐨勭數瀛愯漿縐昏兘鍔涜緝宸墍鑷淬傝繖浜涚粨鏋滆〃鏄庯紝楂?/span>Pt0姣斾緥鏈夊埄浜庣數鑽風殑鍒嗙鍜屼駭姘㈡椿鎬х殑鎻愰珮銆?/span>
鍥?/span>3 鍘熶綅綰㈠琛ㄥ緛銆?/span>錛?/span>a錛?/span>1.0%-Pt/CN-BH-H鍜岋紙b錛?/span>1.0%-Pt/CN-P鍦ㄥ彲瑙佸厜錛?/span>位 鈮?420 nm錛?/span>鐓у皠涓嬬殑鍘熶綅綰㈠鍏夎氨銆?/span>錛?/span>c錛?/span>1.0%-Pt/CN-BH鍦ㄦ皵姘涘鐞?/span>鍜屽姞鐑?/span>榪囩▼涓殑鍘熶綅綰㈠鍏夎氨鍜?/span>錛?/span>d錛?/span>灞閮ㄦ斁澶у浘銆?/span>
鍥?/span>4 DFT鐞嗚璁＄畻銆傦紙a錛?/span>d錛?/span>浼樺寲緇撴瀯錛?/span>錛?/span>b錛?/span>e錛?/span>宸?/span>鍒?/span>鐢佃嵎瀵嗗害鍜?/span>錛?/span>c錛?/span>f錛?/span>Pt2 鍜?/span>Pt0鐗╃瀵規阿姘?/span>鐨勫惛闄勮兘銆?/span>
鏈爺絀舵垚鍔熷埗澶囦簡楂?/span>Pt0姣斾緥錛?/span>60.1%錛?/span>鐨勫厜鍌寲鍓傘?/span>瀹冪殑鍏夊偓鍖栦駭姘㈤熺巼杈懼埌2.316 mmol h-1 g-1錛屾瘮鍙鍏夌収灝?/span>錛?/span>位 鈮?420 nm錛?/span>涓?/span>Pt0姣斾緥杈冧綆錛?/span>8.2%錛?/span>鐨?/span>1.0%-Pt/CN-P錛?/span>0.605 mmol h-1 g-1錛?/span>鎻愰珮浜?/span>4鍊嶃?/span>1.0%-Pt/CN-BH-H鐨勯珮鍏夊偓鍖栨ц兘鍙綊鍥犱簬鍏朵腑鍚湁澶ч噺鐨?/span>Pt0鐗╃錛屽姞閫熶簡鍏夌敓鐢佃嵎鐨勫垎紱?/span>銆?/span>鍙﹀錛?/span>Pt0鐗╃杈冧綆鐨勫惛闄勮兘鏈夊埄浜庢阿姘旂殑婧㈠嚭銆傚洜姝わ紝璋冩帶鍖栧鐘舵佸彲鑳芥槸寮鍙戞柊鍨嬪厜鍌寲鍓傜殑鏈夋晥絳栫暐銆?/span>
璁烘枃絎竴浣滆呬負涓浗鐭蟲補澶у錛堝寳浜級鍗氬＋鐢熸浣蟲槦錛岃鏂囬氳浣滆呬負涓浗鐭蟲補澶у錛堝寳浜級鐜嬮泤鍚涘壇鐮旂┒鍛樺拰娓呭崕澶у鏈辨案娉曟暀鎺堛傛鐮旂┒寰楀埌鍥藉閲嶇偣鐮斿彂璁″垝絳夎祫鍔╂敮鎸併?/span>
鍘熸枃閾炬帴
https://www.sciencedirect.com/science/article/pii/S1385894722018290