摘要
将Pb2+络离子交换进入Nafion324基膜内,在碱性条件下通氯气氧化制备出βPbO2-SPE膜电极材料,研究了Nafion324膜的活化、浸渍液中Pb2+的浓度、氧化时间、超声波搅拌强度和氧化温度等参数对βPbO2-SPE电极材料的结构和性能的影响．结果表明,浸渍液最佳组成为0．05 mol·L-1 Pb(NO3)2+1 mol·L-1 NH4Ac;氧化过程中最适宜超声波搅拌强度为40 W,最佳氧化温度为40℃,氧化时间为2．0 h．在最佳工艺条件下制备的βPbO2-SPE膜电极中活性βPbO2的含量高,βPbO2活性层致密,βPbO2分布均匀,与基膜结合牢固．电化学降解苯酚时βPbO2-SPE膜电极具有比较高的电流效率和电化学稳定性．
The excellent membrane electrode materials of/βPbO2-SPE were prepared via oxidiation of Pb^2＋ exchanged into the support membrane in this paper. The influence of composite of impregnation, ultrasonic stiring power and oxidation temperature and time was investigated. The results show that the optimum composite of impregnation solution is 0.05 mol·L^-1 Pb（NO3）2 ＋ 1 mol·L^-1 NH4Ac, and optimum operation parameters are ultrasonic power of 40 W, temperature of 40 ℃ and oxidation time of 2.0 hr during the oxidation process. The content of/βPbO2 is higher, βPbO2 active layer is compact, distribution of βPbO2 is uniformity and combine with membrane is fastness in the βPbO2-SPE membrane electrode material prepared under the optimum condition. This electrode has much more effective, the current efficiency and the better electrochemical stability.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2006年第5期499-503,共5页
Chinese Journal of Materials Research
基金
河南省杰出人才创新基金项目521001400.
