CAJ | 학술논문

本文提供了一种应用二步法制备片状纳米氧化锌单晶的实验方法--首先,以尿素为沉淀剂宿主,以氯化锌、碱式碳酸锌为原料,应用均匀沉淀法获得纳米氧化锌的片状纳米级前驱物;然后通过控温热分解前驱物制备出片状纳米氧化锌单晶.用扫描电镜观测了制备的ZnO单晶的形貌,并通过红外光谱对其进行了表征.结果表明:实验制备的氧化锌均为无色透明的片状单晶,结晶形貌为正六边形、五边形、矩形以及其它不规则形状,单晶直径在30～600μm之间,厚30～60nm;影响纳米氧化锌单晶制备的主要因素是反应物料配比、沉淀剂宿主尿素的浓度(1∶6)以及反应温度(70～85℃).此外,乙醇的含量对片状纳米前驱物的形貌影响很大,10%～40%的乙醇含量利于形成片状纳米氧化锌单晶.
본문제공료일충응용이보법제비편상납미양화자단정적실험방법--수선,이뇨소위침정제숙주,이록화자、감식탄산자위원료,응용균균침정법획득납미양화자적편상납미급전구물;연후통과공온열분해전구물제비출편상납미양화자단정.용소묘전경관측료제비적ZnO단정적형모,병통과홍외광보대기진행료표정.결과표명:실험제비적양화자균위무색투명적편상단정,결정형모위정륙변형、오변형、구형이급기타불규칙형상,단정직경재30～600μm지간,후30～60nm;영향납미양화자단정제비적주요인소시반응물료배비、침정제숙주뇨소적농도(1∶6)이급반응온도(70～85℃).차외,을순적함량대편상납미전구물적형모영향흔대,10%～40%적을순함량리우형성편상납미양화자단정.
This paper presented a two-step method to prepare sheet nano-zinc oxide single crystals(SNOSC).The precursor of SNOSC was first made by homogeneous precipitation method (HPM), using zinc chloride and alkali zinc carbonate as the raw materials and carbamide as the precipitant. Then the SNOSC was obtained by the thermal decomposition of the precursor. The prepared SNOSC is colorless and transparent with a hexagonal, pentagonal, rectangular or an irregular form, as examined by IR spectra and SEM. The single crystal is 30-600μm in diameter and 30-60nm in thickness . The important factors to the preparation are the ratio of reaction materials, the concentration of carbamide (1:) and the reaction temperature (70-85℃). In addition, the content of ethanol ranging 10%-40% appears favorable for the formation of the precursor of SNOSC.