不同形貌纳米氧化锌的水热法合成

摘要

Nanosized zinc oxides with different morphology were synthesized via a hydrothermal route with ZnCl2 as the zinc source and NaOH as the alkaline source. The effects of crystalliza-tion time, reaction temperature and surfactant cetyltrimethyl ammonium bromide (CTAB) on the morphology of nanosized ZnO products were investigated. Results show that, in the ab-sence of CTAB, granular nanosized ZnO is obtained after 24 h of reaction at 120 ℃ , while sheet-like nanosized ZnO is obtained after 24 h of reaction at 160 ℃. When CTAB is introduced into the reaction system, sheet-like nanosized ZnO is harvested at 120℃ , while granular nano-sized ZnO is afforded at 160 ℃.%以氯化锌为锌源,以氢氧化钠为碱源,采用水热法合成了不同形貌的纳米氧化锌;探讨了晶化时间、晶化温度、表面活性剂十六烷基三甲基溴化铵(CTAB)对纳米ZnO形貌的影响.结果表明:不添加CTAB时,在120℃下反应24 h得到的纳米氧化锌为颗粒状,而在1 60℃下反应24 h得到的纳米氧化锌为片状.当添加CTAB后,在120℃可得到片状氧化锌,而在160℃可得到颗粒状氧化锌.