CAJ | 학술논문

以 Co （NO3）2·6H2 O 和 Na2 WO4·2H2 O 为主要原料，去离子水为溶剂，采用稀NaOH和HNO3溶液调节反应前驱液的pH值，利用微波水热法制备出了CoWO4纳米粉体。通过X射线衍射分析仪（XRD）、扫描电子显微镜（SEM ）及UV-Vis 2600A型紫外可见分光光度计对产物的物相、微观形貌及吸附性能进行了表征测试。结果表明，在前驱液pH值为6到8时成功地合成了CoWO4纳米粉体，所得产物的结晶性良好、微观形貌均匀且规整；反应前驱液pH值为6时所得产物对亚甲基蓝（MB）染料表现出了较好的吸附特性。
이 Co （NO3）2·6H2 O 화 Na2 WO4·2H2 O 위주요원료，거리자수위용제，채용희NaOH화HNO3용액조절반응전구액적pH치，이용미파수열법제비출료CoWO4납미분체。통과X사선연사분석의（XRD）、소묘전자현미경（SEM ）급UV-Vis 2600A형자외가견분광광도계대산물적물상、미관형모급흡부성능진행료표정측시。결과표명，재전구액pH치위6도8시성공지합성료CoWO4납미분체，소득산물적결정성량호、미관형모균균차규정；반응전구액pH치위6시소득산물대아갑기람（MB）염료표현출료교호적흡부특성。
CoWO4 nano-powders were synthesized by micro hydrothermal method ,in which Co(NO3 )2 · 6H2 O and Na2 WO4 · 2H2 O were used as raw materials .Besides ,de-ionized wa-ter was used as reaction solvent and NaOH and HNO3 dilution solutions were added in to ad-just the pH value of this system .Next ,the phase composition of reaction product and its morphology and adsorption performance were characterized by X-ray Diffraction Analysis , Scanning Electron Microscopy and Ultraviolet Spectrophotometer (With the type of UV-Vis 2600A) ,respectively .The results show that CoWO4 nano-powders can be reliably prepared by microwave hydrothermal method when the pH value of precursor lies from 6 to 8 .The products have good crystallinity and present uniform and homogeneous micro crystal struc-ture .Additionally ,the sample synthesized at pH value of 6 exhibits the optimal adsorption properties to the methylene blue (MB) dye .