Ni-B纳米材料催化硼氢化钠水解制氢性能研究

Hydrogen Production Through the Hydrolysis of Sodium Borohydride Catalyzed by Ni-B Nanomaterials

实验探究了如何用化学沉积法制备Ni-B纳米催化剂材料,并通过控制变量法,改变铜金属片沉积时镀液温度,将所制得的催化剂用于催化硼氢化钠(NaBH4)制氢,研究该体系的最佳反应温度。研究结果表明:当沉积时间为5 min,还原剂浓度为0.08 g·L-1时,效果最佳的是镀液温度在20℃下所制备的催化剂。其催化NaBH4水解放氢速率为3037.2mL·min-1·g-1。随后我们研究小组对其进行进一步的SEM表征,结果显示,所制备的Ni-B纳米催化剂颗粒的粒径大小约为100~150 nm。

Ni-B nano-catalyst material was prepared by chemical deposition method,and by controlling the variable method,changing the plating temperature of copper metal sheet deposition,the prepared catalyst was used to catalyze hydrogen production through the hydrolysis of sodium borohydride,and the optimal reaction temperature of the system was investigated.The results showed that when the deposition time was 5 min and the reductant concentration was 0.08 g·L-1,the catalyst prepared at 20℃had the best effect.The dehydrogenation rate of sodium borohydride hydrolysis was 3 037.2 mL·min-1·g-1.Subsequently,Ni-B nano-catalyst material was characterized by SEM.The results showed that the particle size of prepared nano-catalyst was about 100~150 nm.