石油化工高等学校学报

石油化工高等学校学报 ›› 2010, Vol. 23 ›› Issue (1): 6-9.DOI: 10.3696/j.issn.1006-396X.2010.01.002

• 石油化工 • 上一篇    下一篇

pH值对水热合成纳米Bi2O3 光催化性能的影响

孙彤,高杰,穆柏春   

  1. 1.渤海大学化学化工学院, 辽宁锦州121000;
    2.辽宁工业大学材料与化学工程学院, 辽宁锦州121001
  • 收稿日期:2009-03-01 修回日期:2009-09-17 出版日期:2010-03-25 发布日期:2010-03-25
  • 作者简介:孙彤(1966 -), 女, 辽宁盖县, 教授, 博士
  • 基金资助:
    辽宁省自然科学基金资助项目(20062193)。

Influence of pH on Photocatalytic Performances of Nanometer Bismuth Oxide Powders Prepared by Hydrothermal Synthesis Method

  1. 1. College of Chemistry and Chemical Engineering, Bohai University, Jinzhou Liaoning 121000,P.R.China;
    2.College of Material and Chemical Engineering, Liaoning University of Technology,Jinzhou Liaoning 121001,P.R.China
  • Received:2009-03-01 Revised:2009-09-17 Published:2010-03-25 Online:2010-03-25

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摘要： 以Bi(NO3)3溶液为原料,浓氨水为矿化剂,在 pH值为7 .0～10 .0的条件下制备了纳米Bi2O3粉体。以样品对水中罗丹明 B的光催化降解性能为评价指标,对样品的光催化性能进行了评价。结果表明,样品对水中罗丹明B的光催化降解反应为表观一级反应。p H值为 8 .5时,样品的光催化性能最佳。XRD、TEM和 IR表征结果表明,样品中均有Bi2O3、N H4NO3晶体生成,随着 pH值的增加,样品中 Bi2O3晶体含量增加,发育逐渐完好。纳米Bi2O3粉体为球形或条形晶粒,彼此键联成网。p H为 8 .5时,纳米网更加细密,网丝均匀。

关键词: 纳米Bi２O３ , pH , 水热合成法 , 光催化

Abstract: Nanometer bismuth oxide powders were prepared by hydrothermal synthesis method which used bismuth nitrate
solutions as crude material ,strong aqua ammonia as mineralizerd and chose pH in the range of 7~10. The photocatalytic
performances of the samples were estimated by degrading Rhodamine B .The results show that the reaction of photocatalytic
degradation of Rhodamine B follows the surface first law .When pH is 8.5 ,the photocatalytic performance is the optimal .Results of X － ray diffraction (XRD),Transmission electron microscopy (TEM ) and Infra － red (FT － IR) show that the
samples contain bismuth oxide,ammonium nitrate crystal .With pH increasing ,content of bismuth oxide increase and their
structures are excellent .The bismuth oxide powders are spherical shape or strip and connect to networks .When pH is8.5 ,the nanometer networks are even thickness and net wires are homogeneous .

Key words: Nanometer bismuth oxide , pH , Hydrothermal synthesis method , Photocatalytic

引用本文

孙彤,高杰,穆柏春. pH值对水热合成纳米Bi2O3 光催化性能的影响[J]. 石油化工高等学校学报, 2010, 23(1): 6-9.

SUN Tong, GAO Jie, MU Bai-chun. Influence of pH on Photocatalytic Performances of Nanometer Bismuth Oxide Powders Prepared by Hydrothermal Synthesis Method[J]. Journal of Petrochemical Universities, 2010, 23(1): 6-9.

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