碳铵尿素双沉淀法合成球形纳米α-Al_2O_3粉体的研究
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摘要
报道了一种用硝酸铝和碳酸铵以及尿素反应制备球形纳米α-Al_2O_3粉体的便捷方法。通过X射线粉末衍射、差热分析和扫描电镜对产物进行表征观察,结果显示,用这种方法所合成的前驱体为2～6μm鹅卵石形状的氢氧化铝。前驱体再经1200℃煅烧2 h得到直径为200 nm左右的孪生球形纳米氧化铝粉体。在此过程中,尿素起到了调节形貌的作用。
This paper reports a convenient method for preparing spherical nano-α-Al_2O_3 powder by reaction of aluminum nitrate with ammonium carbonate and urea. The product was characterized and observed by X-ray powder diffraction,differential thermal analysis and scanning electron microscopy. The results show that a cobblestone-shaped aluminum hydroxide precursor of 2-6 μm was formed. After calcining at 1200 ℃ for 2 h,the twin spherical nano alumina powder with a diameter of about 200 nm was obtained. In this process,urea played a role in adjusting the morphology.
This paper reports a convenient method for preparing spherical nano-α-Al_2O_3 powder by reaction of aluminum nitrate with ammonium carbonate and urea. The product was characterized and observed by X-ray powder diffraction,differential thermal analysis and scanning electron microscopy. The results show that a cobblestone-shaped aluminum hydroxide precursor of 2-6 μm was formed. After calcining at 1200 ℃ for 2 h,the twin spherical nano alumina powder with a diameter of about 200 nm was obtained. In this process,urea played a role in adjusting the morphology.
引文
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[2]Peng X S,Zhang L D,Meng G W,et al.Photoluminescence and Infrared Properties ofα-Al2O3Nanowires and Nanobelts[J].Journal of Physics.Chem.B.,2002,106:11163-11167.
[3]刘红宇,刘洁,赵文凯.球形氧化铝的制备方法评述[J].材料导报,2016,30(4):114-118.
[4]Chen W B,Chen L J,Liu C D,et al.Preparation of Spherical Alumina Powder by RF Thermal Plasma:Numerical Simulation and Experimentation[J].Journal of Inorganic Materials,2018,33(5):550-556.
[5]Farag H K,Al Zoubi M,Endres F.Sol-gel Synthesis of Alumina,Titania and Mixed Alumina/Titania in the Ionic Liquid 1-Butyl-1-Methylpyrrolidinium Bis(Trifluoromethylsulphonyl)amide[J].Journal of Materials Science,2009,44(1):122-128.
[6]朴玲钰,刘祥志,毛立娟,等.反相微乳液法制备纳米氧化铝[J].物理化学学报,2009,25(11):2232-2236.
[7]张彩霞,罗序燕,吴速英.微乳液法制备氧化铝纳米粉体的研究[J].无机盐工业,2006,(10):26-28.
[8]Kinoshita K,Minami H,Tarutani Y,et al.Preparations of Polystyrene/Aluminum Hydroxide and Polystyrene/Alumina Composite Particles in An Ionic Liquid[J].Langmuir,2011,27(8):4474-4480.
[9]Castruita G,Eera-Mercado Y A,Saucedo-Salazar E M,et al.Sol-gel Aluminum Hydroxides and their Thermal Transformation Studies for the Production of Alpha-Alumina[J].Journal of Inorganic and Organometallic Polymers and Materials,2013,23(5):1145-1152.
[10]Wang J,Ge L,Li Z,et al.Facile Size-controlled Synthesis of Welldispersed Spherical Amorphous Alumina Nnanoparticles via Homogeneous Precipitation[J].Ceramics International,2016,42(7):8545-8551.
[11]江汇,余德平,吕程,等.层流等离子体制备球形氧化铝粉末的实验研究[J].强激光与粒子束,2018,30(5):1-5.
[12]王甲泰,王尔姣,张福波,等.氧化铝制备技术的研究进展[J].无机盐工业,2017,49(10):12-15.