Chemical Journal of Chinese Universities ›› 2018, Vol. 39 ›› Issue (9): 2031-2038.doi: 10.7503/cjcu20180110

• Physical Chemistry • Previous Articles     Next Articles

Hierarchical Porous ZnO Nanomaterial Synthesized with Corn Straw as Biological Templates and Its Photocatalytic Performance

HUANG Yuting, YING Zuping, ZHENG Jixing, ZHUANG Sigeng, LIU Lu, FENG Wei*()   

  1. College of Environment and Resources, Jilin University, Changchun 130021, China
  • Received:2018-02-07 Online:2018-09-07 Published:2018-05-28
  • Contact: FENG Wei E-mail:weifeng@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.61774073).

Abstract:

Hierarchical porous ZnO nanomaterial was prepared using corn straw as biological template via roasting process. The components and crystal characterization of the material were investigated via X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), nitrogen adsorption-desorption analysis and UV-Vis spectrophotometry. The results show that the ZnO material synthesized by template method is wurtzite type. And the crystal particle size is 46.2 nm, the specific area is 32.8 m2/g. Irradiated with Xenon lamp, the rate of decolorization of methylene blue of ZnO material prepared by template method reaches 98%, which is 1.3 times of that prepared without template(74%). Moreover, the influence of pollutant concentration and dosage of catalyst were also investiggted. And the results reveal that ZnO materials synthesized by template method own low grain size but high specific surface area, when 0.15 g catalyst was used to degrade 100 mL of 20 mg/L(MB) solution for five times, the degration rate remained at 95%.

Key words: Bio-template, Corn straw, ZnO, Hierarchical porous structure, Photocatalysis

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