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一步水热合成ZnO/水热炭复合材料及其性能表征

于瑞冬 董悦 郭明辉

于瑞冬, 董悦, 郭明辉. 一步水热合成ZnO/水热炭复合材料及其性能表征[J]. 北京林业大学学报, 2017, 39(7): 111-116. doi: 10.13332/j.1000-1522.20170014
引用本文: 于瑞冬, 董悦, 郭明辉. 一步水热合成ZnO/水热炭复合材料及其性能表征[J]. 北京林业大学学报, 2017, 39(7): 111-116. doi: 10.13332/j.1000-1522.20170014
YU Rui-dong, DONG Yue, GUO Ming-hui. One-step hydrothermal synthesis and characterization of the ZnO/hydrothermal carbon composite material[J]. Journal of Beijing Forestry University, 2017, 39(7): 111-116. doi: 10.13332/j.1000-1522.20170014
Citation: YU Rui-dong, DONG Yue, GUO Ming-hui. One-step hydrothermal synthesis and characterization of the ZnO/hydrothermal carbon composite material[J]. Journal of Beijing Forestry University, 2017, 39(7): 111-116. doi: 10.13332/j.1000-1522.20170014

一步水热合成ZnO/水热炭复合材料及其性能表征

doi: 10.13332/j.1000-1522.20170014
基金项目: 

林业公益性行业科研专项 201404506

详细信息
    作者简介:

    于瑞冬。主要研究方向:生物质炭材料。Email:yrd7517@163.com  地址:150040  黑龙江省哈尔滨市香坊区和兴路26号东北林业大学材料科学与工程学院

    责任作者:

    郭明辉,教授,博士生导师。主要研究方向:木材学和生物质复合材料。Email:gmh1964@126.com  地址:同上

  • 中图分类号: O643.36; TQ35

One-step hydrothermal synthesis and characterization of the ZnO/hydrothermal carbon composite material

  • 摘要: 为了利用林业剩余物水热炭作光催化剂载体,以(CH3COO)2Zn·2H2O和氨水为起始物,以综纤维素基水热炭为基体,采用一步水热合成法制备ZnO/水热炭复合材料。采用X射线衍射仪、扫描电子显微镜对复合材料的晶相结构、表观形貌等进行表征,并以亚甲基蓝为模型污染物测试了复合材料的光催化性能。研究结果表明:在实验条件下可以制备出ZnO/水热炭复合材料,材料中ZnO为六方纤锌矿结构,随水热炭添加量增加,ZnO尺寸有明显的减小,但当水热炭达到24.6%时,ZnO由一维取向的棒状转而呈现片状。光催化性能测试表明:ZnO/水热炭复合材料的光催化性能较纯ZnO有明显提高,其中水热炭为19.7%时,光催化性能最佳,降解效率达到83.1%。动力学分析表明:复合材料对亚甲基蓝的光催化降解过程符合一级动力学模型。

     

  • 图  1  ZnO、ZnO/C1、ZnO/C2、ZnO/C3和ZnO/C4的XRD图谱

    Figure  1.  XRD analysis on ZnO, ZnO/C1, ZnO/C2, ZnO/C3 and ZnO/C4

    图  2  ZnO (a)、ZnO/C1 (b)、ZnO/C2 (c)、ZnO/C3 (d)和ZnO/C4 (e)的SEM图

    Figure  2.  SEM images of ZnO (a), ZnO/C1 (b), ZnO/C2 (c), ZnO/C3 (d) and ZnO/C4 (e)

    图  3  ZnO和ZnO/水热炭复合材料对亚甲基蓝(100 mL、10 mg/L)的降解曲线

    Figure  3.  Degradative curves of methylene blue (100 mL, 10 mg/L) by ZnO and ZnO/hydrothermal carbon composites

    图  4  MB降解过程的动力学模型拟合

    Figure  4.  Dynamics model fitting of the degradation process of MB

    表  1  ZnO和ZnO/水热炭复合材料的平均粒径

    Table  1.   Average particle size of ZnO and ZnO/hydrothermal carbon composites

    样品
    Sample
    水热炭加入量
    Dosage of hydrothermal carbon/g
    平均粒径
    Mean particle size/nm
    ZnO048.1
    ZnO/C10.0147.4
    ZnO/C20.0246.9
    ZnO/C30.0346.5
    ZnO/C40.0438.9
    下载: 导出CSV

    表  2  动力学方程及参数

    Table  2.   Kinetics equation and parameters of different samples

    样品
    Sample
    动力学方程
    Knetics equation
    一级反应速率常数
    Rate constant of first order reaction (k)
    R2
    ZnOln(C0/Ct)=0.006 0t+0.112 50.006 00.961 6
    ZnO/C1ln(C0/Ct)=0.008 0t+0.119 00.008 00.974 7
    ZnO/C2ln(C0/Ct)=0.009 6t+0.129 00.009 60.984 7
    ZnO/C3ln(C0/Ct)=0.013 9t+0.163 90.013 90.994 1
    ZnO/C4ln(C0/Ct)=0.011 5t+0.170 40.011 50.988 5
    注:t为反应时间(min), C0为初始质量浓度(mg/L),Ct为反应后质量浓度(mg/L)。Notes: t is reaction time (min), C0 is the initial mass concentration (mg/L), Ct is the mass concentration after reaction (mg/L).
    下载: 导出CSV
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  • 收稿日期:  2017-01-12
  • 修回日期:  2017-05-17
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