以花状纳米金(AuNFs)或球形纳米金(AuNPs)为催化剂,硼氢化钠为供氢体,在不同温度下以对硝基苯酚为模板发生还原反应.结果表明,该催化反应温度与时间呈负相关.50℃时,AuNFs所需反应时间为7min,37℃时所需时间为15 min,20℃时所需时间为45 min.该反应为准一级动力学反应.AuNFs的Ea值37.97 kJ/mol,比AuNPs的E值51.51 kJ/mol小,说明花状纳米金比球形纳米金具有更高的催化活性.
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