CAJ | 학술논문

在乙二醇体系中,通过简单的二步方法成功合成了α-Fe_2O_3亚微米球.第一步,以Fe(NO)_3和C_6H_12N_4为主要反应物160℃溶剂热反应8h制备出前驱体;第二步,煅烧前驱体成功合成了斜方相的α-Fe_2O_3,产物.利用X射线粉末衍射(XRD),扫描电子显微镜(SEM),透射电子显微镜(TEM),红外吸收光谱(FTIR),能谱分析(EDS)和热重分析(TGA)等手段对产物进行了表征.在300 W紫外灯(主波长为365 nm)照射下降解一定浓度的甲基橙溶液,研究不同光催化剂对甲基橙溶液降解效果.由于制备产物的形貌和粒径影响其比表面积和对反应物的吸附能力以及带隙能,使得制备产物具有良好的光催化性能.结果表明,α-Fe_2O_3,亚微米球在紫外光照射条件下对甲基橙溶液有光降解作用.
재을이순체계중,통과간단적이보방법성공합성료α-Fe_2O_3아미미구.제일보,이Fe(NO)_3화C_6H_12N_4위주요반응물160℃용제열반응8h제비출전구체;제이보,단소전구체성공합성료사방상적α-Fe_2O_3,산물.이용X사선분말연사(XRD),소묘전자현미경(SEM),투사전자현미경(TEM),홍외흡수광보(FTIR),능보분석(EDS)화열중분석(TGA)등수단대산물진행료표정.재300 W자외등(주파장위365 nm)조사하강해일정농도적갑기등용액,연구불동광최화제대갑기등용액강해효과.유우제비산물적형모화립경영향기비표면적화대반응물적흡부능력이급대극능,사득제비산물구유량호적광최화성능.결과표명,α-Fe_2O_3,아미미구재자외광조사조건하대갑기등용액유광강해작용.
α-Fe_2O_3 microspheres were synthesized by a two-step method in ethylene glycol (EG) system. First, α-Fe_2O_3 precursor were synthesized by a simple solvent-thermal method at 160 ℃ for 8 h using Fe(NO)_3 and C_6H_12N_4 as reactants. Second, the precursor was calcined to obtain the product of crystalline α-Fe_2O_3. The as-synthesized samples were characterized by X ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), infrared spectrum (FTIR), energy-dispersive spectrometry (EDS) and thermal analysis (TGA). The photocatalytic activity of the products was examined by measuring the photodegradation of methyl orange solution with ultraviolet radiation. The result showed the as-synthesized products had an excellent photocatalytic activity due to the shape, high surface area of the products.