CAJ | 학술논문

以铁氰化钾、磷酸二氢铵等为反应物,采用水热法合成了α-Fe_2O_3空心球,并用XRD,TEM,FESEM(场发射扫描电镜)、UV-Vis和低温氮吸附脱附对其进行了表征.结果表明,α-Fe_2O_3空心球直径在200～560 nm之间,其BET比表面积为80 m~2·g~(-1),平均孔径为8.5 nm.考察了反应时间、反应物用量和反应温度等对α-Fe_2O_3空心球形貌和大小的影响,提出了其可能的形成机理.研究了室温下α-Fe_2O_3空心球吸附苯酚的性能,吸附达平衡时,其吸附苯酚的量达97 mg·g~(-1).
이철청화갑、린산이경안등위반응물,채용수열법합성료α-Fe_2O_3공심구,병용XRD,TEM,FESEM(장발사소묘전경)、UV-Vis화저온담흡부탈부대기진행료표정.결과표명,α-Fe_2O_3공심구직경재200～560 nm지간,기BET비표면적위80 m~2·g~(-1),평균공경위8.5 nm.고찰료반응시간、반응물용량화반응온도등대α-Fe_2O_3공심구형모화대소적영향,제출료기가능적형성궤리.연구료실온하α-Fe_2O_3공심구흡부분분적성능,흡부체평형시,기흡부분분적량체97 mg·g~(-1).
Using potassium ferricyanide, NH_4H_2PO_4 as the reactants, α-Fe_2O_3 hollow spheres were synthesized by a hydrothermal method. The samples were characterized by TEM, XRD, FESEM(field-emission scanning electron microscope), UV-Vis spectroscopy and low temperature nitrogen adsorption-desorption. The results show that the diameter of α-Fe_2O_3 hollow spheres is 200～560 nm, and the BET surface area and the average diameter of pore is 80 m~2·g~(-1) and 8.5 nm, respectively. The effect of the reaction time, the amount of reactant and the reaction temperature on the morphology and size of α-Fe_2O_3 hollow spheres was examined. The formation mechanism of the hollow spheres was proposed. The adsorption performance of α-Fe_2O_3 hollow spheres to phenol was investigated at room temperature, and the capacity for phenol adsorption was 97 mg·g~(-1) when the balance of adsorption was reached.