CAJ | 학술논문

先在NaOH-( NH4)2 S2 O8溶液中氧化，再高温脱水可得到表面布满柱状和花瓣状CuO的铜网，然后以H2加热还原CuO后得到表面粗糙化铜网，再与HAuCl4溶液进行置换反应，在粗糙化铜网表面形成刺叶状纳米Au的阵列，刺叶状纳米Au的平面排布密度达107片/mm2。所得刺叶状纳米Au阵列对NaBH4还原对硝基苯酚反应具有良好的重复催化活性，重复使用10次，其催化活性未见明显衰减，催化剂平均转化频率为3．22×10-3mol·gAu-1·h-1(重复10次的相对标准偏差为3．84%)。
선재NaOH-( NH4)2 S2 O8용액중양화，재고온탈수가득도표면포만주상화화판상CuO적동망，연후이H2가열환원CuO후득도표면조조화동망，재여HAuCl4용액진행치환반응，재조조화동망표면형성자협상납미Au적진렬，자협상납미Au적평면배포밀도체107편/mm2。소득자협상납미Au진렬대NaBH4환원대초기분분반응구유량호적중복최화활성，중복사용10차，기최화활성미견명현쇠감，최화제평균전화빈솔위3．22×10-3mol·gAu-1·h-1(중복10차적상대표준편차위3．84%)。
Copper grid-based blade-like Au array,for reusable catalyst,has been achieved by means of a template related proce-dure. Copper grids(CG)were reacted with NaOH-(NH4)2S2O8 solution,and then dehydrated at high temperature to get CG with rod-and flower-like CuO. Then the CuO was reduced by H2 to get roughened CGH. The blade-like Au array(CGHAu)could be ob-tained by the reaction of the roughened CGH with aqueous HAuCl4 solution. The surface density of blade-like Au of CGH Au is about 107/mm2 range. The as-prepared CGHAu could be used as a reusable catalyst for the well-known p-nitrophenol(4-NP)reduction to p-aminophenol(4-AP)with an excess amount of NaBH4. The catalyst efficiency was evaluated on the basis of turnover frequency (TOF)and recyclability. The average TOF of the catalyst was 3. 22×10-3mol·gAu-1·h-1 with a relative standard deviation of 3. 84%in 10-cycle reuse.