【摘要】 利用水热法结合热处理技术,以In（NO₃）3、蔗糖和Na₂SO₄为原料制备了In₂O₃六边形微米片。微米片为立方相多晶结构,直径达到十余个微米、厚度仅有100¹50 nm,内部多孔。微米片的氮气吸脱附等温线表明材料属于介孔材料,孔径分布于25¹25 nm,产物的BET比表面积只有12.8 cm3/g,可能是表面颗粒覆盖了内部孔洞造成。分析了材料的生长机理,认为SO₄2-的配位作用既减缓了前驱体的生长速度,又使前驱体颗粒相互组装形成微米片,蔗糖改善了分散性。更多还原

【Abstract】 In the work, In₂O₃ microflaks were successfully synthesized by hydrothermal method using In（NO₃）3, sucrose and Na2SO₄ as raw materials. SEM and TEM images indicated that the C-In₂O₃ porous products show as hexagonal microflaks with a side length of more than ten micrometers and a thickness of 100¹50 nm. Nitrogen adsorption–desorption isotherm confirms mesoporous properties, and the porous size concentrates between 25 and 125 nm. While the BET specific surface area only was 12.8 cm³/g, this may be caused by the surface covering of the internal holes. Possible growth mechanisms were also proposed: the coordination effects between In³⁺ and SO₄2-, may play the leading roles in the formation of C-In2O₃ crystal phases and their self-assembly. And, sucrose was regarded as the main reasons to improve the dispersion situation of the products.更多还原