以尿素为燃料, 表面活性剂为助燃剂, 硝酸锌为锌源, 通过燃烧合成法快速制备出氮掺杂粉色ZnO纳米晶. 研究了煅烧温度、物料配比对所制产品性能的影响. 采用FTI、RSEM、XRD、XPS等测试手段对产品进行了表征, 利用热力学公式对理论绝热燃烧火焰温度进行了计算. 实验结果表明: 在微量助燃剂作用下, 当燃料与物料摩尔比为4.920,煅烧温度为800℃,Zn(NO3)2·6H2O水溶液的浓度为60g/L时所得到的粉体综合性能最好, 根据谢乐公式计算的一次粒子平均粒径为30nm, 晶相与标准立方相ZnO衍射峰完全一致, 没有其他杂相出现, 颜色为均匀的粉色. XPS测试分析表明粉体中氮掺杂量为1.02%时, 具有较好的紫外屏蔽性.
N-doped ZnO (NZO) nanocrystallines were synthesized by combustion method using urea as main fuel, surfactant as assistant fuel and zinc nitrate as oxidant. The effects of calcination temperature and molar ratio of urea to zinc nitrate on the properties of the synthesized samples were investigated. The variation of adiabatic flame temperature (Tad) with the various fuel-to-oxidizer molar ratios value was calculated theoretically according to the thermodynamic principle. XRD, FTIR, SEM and XPS were used to characterize the properties of the samples respectively. The experimental results show that perfect pink powders with standard cubic ZnO crystal phase are obtained at 800℃ when molar ratio of the urea to zinc nitrate is 4.920 and the concentration of the zinc nitrate is 60g/L. The average primary granularity of the as-synthsized sample is about 30nm estimated according to Scherrer Equation. XPS analysis indicates that the nitragen concentrantion in the N-doped ZnO sample is 1.02%. And the obtained N-doped ZnO film has perfect ultraviolet prevention ability.
参考文献
| [1] | Cao H, Xu J Y, Zhang D Z, et al. Phys. Rev. Lett., 2000, 84: 5584-5591. [2] 贾晓林, 张海军, 谭\hspace*{.12cm伟, 等, 稀有金属材料与工程, 2004, 33 (9): 992-995. [3] Shim M, Guyot-Sionnest P. J . Am. Chem. Soc., 2001, 123: 116511-11654. [4] 方佑龄, 赵文宽. 涂料工业, 1991, (4): 4-7. [5] 顾达, 顾燕芳. 粉体技术, 1996, 2 (3): 27-30. [6] 何琴玉, 等. 防晒用肤色氧化锌纳米粉的制备方法,CN1587059A,2005. [7] 李晓娥, 屈宪军, 韩\hspace*{.12cm胜, 等. 化学工程, 2002, 30 (2): 41-44. [8] 曹俊, 周继承, 吴建懿, 等. 精细化工中间体, 2004, 34 (4): 60-62. [9] 蔡意文, 毋伟, 陈建峰. 北京化工大学学报, 2004, 31 (4): 28-31. [10] Lin Cheng-Shiung, Hwang Chyi-Ching, Lee Wei-Hua, et al. Mater. Sci. Eng. B, 2007, 140: 31-37. [11] Zhao Yuna, Cao Maosheng, Jin Haibo, et al. J. Nanosci. Nanotech., 2006, 6 (8): 2525-2528. [12] 刘桂香, 徐光亮, 罗庆平(LIU Gui-Xiang, et al). 硅酸盐学报(Journal of The Chinese Ceramic Society), 2006, 34 (9): 1055-1059. [13] Kezban Ada, Murat Gokgoz, Muserref Onal, et al. Powder Technol., 2007, 179: 79-85. [14] 徐美, 张慰萍, 尹民, 等(XU Mei, et al). 无机材料学报(Journal of Inorganic Materials), 2003, 18 (4): 933-936. [15] Perry R H, Chilton C H. Chemical Engineering Handbook, 7th ed., McGraw-Hill, New York, 1997. [16] Dean J A(Ed.). Lange’s Handbook of Chemistry, 15th ed., McGraw-Hill, New York, 1998. [17] 张国青, 孙萍, 熊波, 等. 材料科学与工程学报, 2006, 24 (2): 286-273. [18] Chen Xiaobo, Lou Yongbing, Samia Anna C S, et al. Adv. Funct. Mater., 2005, 15 (1): 41-49. |
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