Preparation of Hollow Spherical Bismuth Oxyiodide and Its Adsorption and Photocatalytic Degradation of Dyes

doi:10.11944/j.issn.1000-0518.2017.05.160324

Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (5): 590-596.DOI: 10.11944/j.issn.1000-0518.2017.05.160324

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Preparation of Hollow Spherical Bismuth Oxyiodide and Its Adsorption and Photocatalytic Degradation of Dyes

FU Dawei,XIE Ruyi,ZHANG Linping(),XU Hong,ZHONG Yi,SUI Xiaofeng,MAO Zhiping()

Key Laboratory of Science & Technology of Eco-Textile,Ministry of Education,Donghua University,Shanghai 201620,China

Received:2016-08-16 Accepted:2016-11-03 Published:2017-05-02 Online:2017-05-02
Contact: ZHANG Linping,MAO Zhiping
Supported by:
Supported by the National Key Technology R & D Program(No.2014BAC13B02), the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry(No.13W10539)

Abstract

Abstract:

Hollow spherical bismuth oxyiodide(BiOI) was synthesized via the solvothermal method. The as-prepared BiOI was well characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM) and N₂ adsorption-desorption analysis. Two different types of dyes, such as cationic rhodamine B(RhB) and anionic reactive blue KN-R, were selected to evaluate the adsorption and photocatalytic activity of BiOI. The results show that the initial pH values have great effect on the adsorption and degradability of different types of dyes. The degradation efficiency of RhB and KN-R reaches 96.2% and 92.5%, respectively. The active species trap experiments reveal that h⁺ is the dominant specie for the degradation of dyes.

Key words: bismuth oxyiodide, photocatalyst, adsorbent, adsorption mechanism, photocatalytic mechanism

FU Dawei, XIE Ruyi, ZHANG Linping, XU Hong, ZHONG Yi, SUI Xiaofeng, MAO Zhiping. Preparation of Hollow Spherical Bismuth Oxyiodide and Its Adsorption and Photocatalytic Degradation of Dyes[J]. Chinese Journal of Applied Chemistry, 2017, 34(5): 590-596.

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Preparation of Hollow Spherical Bismuth Oxyiodide and Its Adsorption and Photocatalytic Degradation of Dyes

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