CAJ | 학술논문

用溶胶-凝胶法制备出EuFeO3纳米颗粒,通过调节蒸胶温度控制Eu3Fe5O12相的生成,X射线衍射测试结果表明当蒸胶温度升高到140 oC时,样品会出现EuFeO3和Eu3Fe5O12的混合相.并且随着蒸胶温度的升高,样品的磁性逐渐增强,但可见光下对有机染料罗丹明B的催化降解效率逐渐减弱.当在光催化反应中加入少量H2O2后,由于存在非均相芬顿反应,罗丹明B的降解效率有了进一步的提高.
용용효-응효법제비출EuFeO3납미과립,통과조절증효온도공제Eu3Fe5O12상적생성,X사선연사측시결과표명당증효온도승고도140 oC시,양품회출현EuFeO3화Eu3Fe5O12적혼합상.병차수착증효온도적승고,양품적자성축점증강,단가견광하대유궤염료라단명B적최화강해효솔축점감약.당재광최화반응중가입소량H2O2후,유우존재비균상분돈반응,라단명B적강해효솔유료진일보적제고.
A facile sol-gel approach with a fixed calcination temperature is developed to prepare EuFeO3 nanoparticles, and gel-drying temperature is adjusted to control the appearance of the Eu3Fe5O12 parasitic phase. With the examination of X-ray powder diffraction, it is confirmed that EuFeO3/Eu3Fe5O12 multiphase phases can be found in the samples when the gel-drying temperature is higher than 140 oC. Moreover, the saturated magneti?zation of the samples increases with the increasing of gel-drying temperature. On the contrary, the visible-light photocatalytic activities of the corresponding samples toward Rhodamine B decrease. Further enhanced photocat?alytic activity is obtained in this study when adding a small amount of H2O2 during the photocatalysis, indicating that the samples have photo-Fenton-like catalytic activity.