以硝酸铜,均苯三甲酸为原料,采用溶剂热合成法首先制备了铜基金属有机骨架材料(Cu-HKUST-1),然后采用气氛焙烧法制备了一系列三元铜基复合催化剂(Cu/Cu₂O/CuO)。通过调控灼烧时氮气和空气的配合比,实现了Cu/Cu₂O/CuO中铜(Cu)、氧化亚铜(Cu₂O)和氧化铜(CuO)三相含量的调控。研究结果表明:Cu/Cu₂O/CuO中的Cu、Cu₂O和CuO三者比列含量微观可调,随着空气比例微量增加,Cu/Cu₂O/CuO中Cu的含量逐渐减少,Cu₂O和CuO含量明显增多,通过气氛调节可以实现Cu、Cu₂O和CuO三相配合比的优化组合。在对对硝基苯酚还原实验中,在氮气∶空气的配合比为200mL∶2mL条件下制备的Cu/Cu₂O/CuO催化效果最好,反应约45s对对硝基苯酚的降解率超过90%。

Cu-HKUST-1 was prepared by a solvothermal method using copper nitrate and trimesic acid.Then a series of Cu/Cu₂O/CuO ternary copper-based composite catalysts were prepared by sintering Cu-HKUST-1 under different atmospheres.By changing the proportion of nitrogen and oxygen in annealing gas,the content of Cu,Cu₂O and CuO in Cu/Cu₂O/CuO catalysts can be effectively adjusted.The results showed that Cu,Cu₂O and CuO in catalysts can be rationally modulated,i.e.,the trace increase of air in annealing stream can lead to the decreasing of Cu,whereas the content of Cu₂O and CuO increased.The optimization of Cu,Cu₂O and CuO can be realized by adjusting the annealing atmosphere.In the catalytic reduction of p-nitrophenol,the optimized Cu/Cu₂O/CuO catalysts (N₂∶Air=200mL∶2mL) exhibited the highest catalytic activity and it took 45s to obtain a conversion rate of above 90%.