CAJ | 학술논문

以Cd(NO 3)2·4H 2 O和Na 2 WO 4·2H 2 O为原料，采用水热法合成了高荧光性CdWO 4纳米棒，并通过X射线粉末衍射、扫描电子显微镜及荧光光谱对其进行了表征，系统地研究了体系的pH值及乙醇添加量对合成产物的物相、形貌和下转换发光性能的影响。结果表明：在pH值为5~9的范围内，能得到单斜晶系的CdWO 4纳米棒，当激发波长为297 nm时，所得样品均在400~550 nm有很强的发射峰。在水体系中引入乙醇后，所得CdWO 4纳米棒变细，随着乙醇量的增加，样品发光强度逐渐增大。
이Cd(NO 3)2·4H 2 O화Na 2 WO 4·2H 2 O위원료，채용수열법합성료고형광성CdWO 4납미봉，병통과X사선분말연사、소묘전자현미경급형광광보대기진행료표정，계통지연구료체계적pH치급을순첨가량대합성산물적물상、형모화하전환발광성능적영향。결과표명：재pH치위5~9적범위내，능득도단사정계적CdWO 4납미봉，당격발파장위297 nm시，소득양품균재400~550 nm유흔강적발사봉。재수체계중인입을순후，소득CdWO 4납미봉변세，수착을순량적증가，양품발광강도축점증대。
Strong-fluorescent CdWO4 nanorods were synthesized by hydrothermal reaction of Cd(NO3)2·4H2O and Na2WO4·2H2O. The samples were characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM) and fluorescence spectrometer (PL). The effects of pH value and adding amount of ethanol of system on the phase composition, morphology and luminescent properties of the prepared CdWO4 nanorods were systematically discussed. The results indicate that monoclinic CdWO4 nanorods can be obtained in the pH range of 5-9, which show a strong emission band at 400-550 nm (λex = 297 nm). The prepared CdWO4 nanorods became thinner by adding ethanol to the aqueous solution system. The emission spectra intensities of prepared CdWO 4 nanorods increase with the increasing of ethanol amount.