CAJ | 학술논문

以Zn(NO3)2·6H2O和Na2SeO3作为原料,通过水热法制备ZnSe纳米晶。探讨了水热反应温度、反应时间、NaOH浓度和N2H4·H2O的添加量对最终产物的相组成、显微形貌和颗粒尺寸的影响，并借助XRD、SEM、TEM、PL等测试手段对产物的相组成、显微形貌和颗粒尺寸进行表征。添加20 mL 1 mol/L NaOH溶液和10 mL N2H4·H2O溶液，在180°C的温度下水热反应4 h 制备的产物主要是立方闪锌矿结构的ZnSe微球，所得的ZnSe微球从内到外是由平均尺寸约20 nm的ZnSe纳米晶组成。结果表明：较低的水热温度和较短的反应时间都不利于得到结晶好的纯相 ZnSe，产物结晶性不好，而且还会产生杂相和有较多缺陷。添加适量浓度的 NaOH 和水合肼才能确保得到形貌均匀、发光性能好的ZnSe微球。
이Zn(NO3)2·6H2O화Na2SeO3작위원료,통과수열법제비ZnSe납미정。탐토료수열반응온도、반응시간、NaOH농도화N2H4·H2O적첨가량대최종산물적상조성、현미형모화과립척촌적영향，병차조XRD、SEM、TEM、PL등측시수단대산물적상조성、현미형모화과립척촌진행표정。첨가20 mL 1 mol/L NaOH용액화10 mL N2H4·H2O용액，재180°C적온도하수열반응4 h 제비적산물주요시립방섬자광결구적ZnSe미구，소득적ZnSe미구종내도외시유평균척촌약20 nm적ZnSe납미정조성。결과표명：교저적수열온도화교단적반응시간도불리우득도결정호적순상 ZnSe，산물결정성불호，이차환회산생잡상화유교다결함。첨가괄량농도적 NaOH 화수합정재능학보득도형모균균、발광성능호적ZnSe미구。
ZnSe microspheres were synthesized via a facile hydrothermal method under mild conditions using aqueous zinc nitrate and sodium selenite as raw materials. The effects of hydrothermal temperature, reaction time, concentration of NaOH and amount of hydrazine hydrate on the phase structure, morphology and size of final products were carefully investigated. The phase structures, morphologies and optical properties of the final products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy. ZnSe microspheres assembled by average size (about 20 nm) nanocrystals were prepared using 20 mL of 1 mol/L NaOH solution and 10 mL of hydrazine hydrate at 180 °C for 4 h. The results show that the products obtained at low hydrothermal temperature and short reaction time have poor crystallinity and contain impurity phases. The appropriate NaOH concentration and amount of hydrazine hydrate ensure to obtain pure ZnSe with spherical morphology and better luminescence property.