应用化学 ›› 2009, Vol. 26 ›› Issue (11): 1324-1327.

• 研究论文 • 上一篇    下一篇

Keggin型Ni-Mo-Zr杂多酸盐的合成、表征及催化超声降解性能

张治宏1,2*,王晓昌1,常哲敏2,吕素娟2   

  1. (1.西安建筑科技大学环境与市政工程学院 西安 710055;2.西安工业大学材料与化工学院 西安)
  • 收稿日期:2008-11-18 修回日期:2009-02-23 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 张治宏,男,副教授; E-mail:zhzhang0416@163.com; 研究方向:水污染控制及资源化

Synthesis , Characterization of the Ni-Mo-Zr Heteropoly Salt with Keggin Structure and Its Ultrasonic Degradation Properties

ZHANG Zhi-Hong1,2*, WANG Xiao-Chang1, CHANG Zhe-Min2, LV Su-Juan2   

  1. (1.College of Environmental and Municipal Engineering,Xi′an University of Architecture and Technology,Xi′an 710055;
    2.School of Materials and Chemical Engineering,Xi′an Technological University,Xi′an)
  • Received:2008-11-18 Revised:2009-02-23 Published:2009-11-10 Online:2009-11-10

摘要:

采用水热合成法制备了Keggin型结构的Ni-Mo-Zr杂多酸盐,并利用红外光谱(IR)和X射线衍射仪(XRD)对合成的产物进行了表征。以酸性绿B(AGB)为目标物,研究了在超声波辐射下,Ni-Mo-Zr杂多酸盐的投加量、染料废水初始浓度、pH值等因素对降解效果的影响。实验结果表明:新合成的杂多酸盐具有Keggin型结构,当催化剂的投加量为0.8 g/L,染料废水的初始浓度为10 mg/L,初始pH=5时,用 40 kHz超声频率辐射60 min,染料废水的降解率最高可达90.2%。通过动力学分析,降级反应符合一级反应动力学模型,降解速率随初始浓度的增加而减小。

关键词: Ni-Mo-Zr, Keggin结构, 杂多酸盐, 超声降解, 酸性绿B, 废水处理

Abstract:

The Ni-Mo-Zr heteropoly salt with Keggin structure has been hydrothermally synthesized and characterized by IR and XRD。Properties of ultrasonic degradation was investigation by the acidic-green B (AGB)dye used as the objective compound, and the influence factors on the ultrasonic degradation efficiency, such as the amount of the heteropoly salt, the initial concentration and the pH value of the acidic-green B dye wastewater, were explored.The results showed that the Ni-Mo-Zr heteropoly salt newly synthesized was Keggin structure. When the amount of the heteropoly salt was 0.8 g/L ,the initial concentration of the dye wastewater was 10 mg/L and the initial pH value of the wastewater was 5.0, ultrasonic irradiation 60min with 40KHz, the degradation rate was optimum and up to 90.2%. After dynamics analysed, the degradation reaction was accord with the first order dynamics model, and the degradation rate was decreased with the increasing of the initial concentration of the acidic-green B.

Key words: Ni-Mo-Zr, Keggin structure, heteropoly salt, ultrasonic degradation, acidic-green B, wastewater treatment

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