东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (2): 254-257.DOI: -

• 论著 • 上一篇    下一篇

纳米TiO_2对痕量Pb(Ⅱ)的吸附研究

张霞;赵月;孙挺;   

  1. 东北大学理学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-02-15 发布日期:2013-06-22
  • 通讯作者: Zhang, X.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2007AA06Z116);;

Study on the adsorption of trace Pb(II) on TiO2 nanoparticles

Zhang, Xia (1); Zhao, Yue (1); Sun, Ting (1)   

  1. (1) School of Sciences, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-02-15 Published:2013-06-22
  • Contact: Zhang, X.
  • About author:-
  • Supported by:
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摘要： 利用TiO2纳米颗粒的表面吸附活性,应用火焰原子吸收光谱检测方法,高效分离了水中痕量的Pb(Ⅱ).系统研究了纳米TiO2的晶体结构、溶液的pH值、吸附时间、Pb(Ⅱ)的起始质量浓度对Pb(Ⅱ)吸附率的影响,得到纳米TiO2对Pb(Ⅱ)的最佳吸附条件为:pH=6.5,m(TiO2)=20 mg,ρ0(Pb(Ⅱ))=18 mg.L-1,t=90 min.测定了纳米TiO2对Pb(Ⅱ)的吸附等温线,应用Freundlich公式得到了吸附等温方程.

关键词: 纳米TiO2, 痕量Pb(Ⅱ), 纳米吸附剂, 吸附等温方程

Abstract: An efficient separation of the trace Pb(II) in waste water was carried out taking TiO2 nanoparticles as adsorbent and flame atomic absorption spectrophometer as detector to determine the concentration of Pb(II). The effects of the crystalline structure of TiO2 nanoparticles, pH values of solution, adsorbing time and initial concentration of Pb(II) on the adsorption rate were systematically studied, with the optimum adsorption conditions determined, i.e., pH=6.5, m(TiO2)=20 mg, ρ0(Pb(II))=18 mg·L-1, t=90 min. The relevant adsorption isotherm was then determined with the isotherm equation given on the basis of Freundlich formula.

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