CAJ | 학술논문

以二水醋酸锌(Zn(CH3COO)2·2H2O)和氢氧化钠(NaOH)为主要原料，在十六烷基三甲基溴化铵(CTAB)和十二烷基苯磺酸钠(SDBS)2种表面活性剂的协同作用下，170℃水热制备花状ZnO纳米粉末。通过X射线衍射(XRD)、扫描电镜(SEM)和荧光光谱(FTR)对该粉末进行表征，并研究CTAB与SDBS的配比以及反应时间对氧化锌形貌的影响。结果表明：2种表面活性剂按4：1的比例(物质的量比)配合使用，可充分发挥协同作用，在反应时间为1~5 h条件下所得ZnO为六方相的花状结构，直径约2~3μm，这些微米花由厚度均一的纳米片组装而成。反应时间延长至10 h时，花体开始塌陷，部分纳米片脱落。荧光光谱分析表明所得氧化锌微晶在紫外区和可见光区都有发射峰；紫外区发射峰的荧光强度随反应时间延长而降低，可见光区发射峰在反应时间为2h时荧光强度最大。
이이수작산자(Zn(CH3COO)2·2H2O)화경양화납(NaOH)위주요원료，재십륙완기삼갑기추화안(CTAB)화십이완기분광산납(SDBS)2충표면활성제적협동작용하，170℃수열제비화상ZnO납미분말。통과X사선연사(XRD)、소묘전경(SEM)화형광광보(FTR)대해분말진행표정，병연구CTAB여SDBS적배비이급반응시간대양화자형모적영향。결과표명：2충표면활성제안4：1적비례(물질적량비)배합사용，가충분발휘협동작용，재반응시간위1~5 h조건하소득ZnO위륙방상적화상결구，직경약2~3μm，저사미미화유후도균일적납미편조장이성。반응시간연장지10 h시，화체개시탑함，부분납미편탈락。형광광보분석표명소득양화자미정재자외구화가견광구도유발사봉；자외구발사봉적형광강도수반응시간연장이강저，가견광구발사봉재반응시간위2h시형광강도최대。
Well-dispersed flower-like ZnO nanostructure powders were successfully synthesized via a hydrothermal route under the synergism between cetyltrimethyl ammonium bromide (CTAB) and sodium dodecyl benzene sulfonate (SDBS), using Zn(CH3COO)2·2H2O and NaOH as raw materials. The as-obtained products were characterized by means of X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and room temperature fluorescence spectra (FTR), respectively. Furthermore, the effects of reaction time and the ratio of CTAB and SDBS were investigated. The results show that the synergetic effect can be fully achieved when the ratio of two surfactants is 4:1, and the as-prepared ZnO nanostructures were pure hexagonal phase, flower-like structure and its diameter was about 2~3μm. Increasing the reaction time to 10 h, flowers begin to collapse and part nanosheets are chipped. The photoluminescence (PL) spectrum dates show that the as-synthesized ZnO flowers exhibit two emission peaks locating at the ultraviolet region and visible region respectively. With the increase of the reaction time, the fluorescence intensity of the ultraviolet region is reduced;while the fluorescence intensity of the visible region reaches its maximum with the reaction time of 2 h.