NaOHおよびNH₃がSnO微粒子の水熱成長に及ぼす影響

抄録

  In this study, SnO particles were synthesized by the hydrothermal method using NH₃ or NaOH as alkaline solutions with various pH values. Cross structures were formed by using NH₃ with pH values of 9, 10, and 11. Agglomerated plates and blocks were formed using NaOH with pH ranges of 9-10 and 11-12, respectively. The resulting crosses, plates, and blocks with SnO particles were observed to comprise an exposed {001} plane with a plate-like structure, whenever NaOH or NH₃ was used. Further, NH₃ facilitated the SnO growth due to its OH ion buffering ability. The addition of NaOH caused a rapid growth of SnO particles when the reaction solution had a high pH that ranged from 11 to 12. Cross structures were also formed by using a mixed solution of NH₃ and NaOH with pH of 10. Moreover, NH₃ was observed to promote the formation of a cross structure.