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Acta Physico-Chimica Sinica  2010, Vol. 26 Issue (09): 2437-2442    DOI: 10.3866/PKU.WHXB20100910
CATALYSIS AND SURFACE STRUCTURE     
Optimizational Preparation and Mesoporous Material Characteristics of a Novel Biomimetic Photocatalyst and Its Application to the Photocatalytic Degradation of Phenol
GAO Guan-Dao, LI Jing, ZHANG Ai-Yong, AN Xiao-Hong, ZHOU Lei
Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, P. R. China
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Abstract  

Hexagonal mesoporous silica (HMS) was synthesized using dodecylamine (DDA) or octadecylamine (ODA) as templates which were then removed by calcination or extraction. Characterization data of HMS from XRD and N2 adsorption-desorption proved that the optimized material were typical mesoporous materials based on the facts that the XRDdiffraction peak displayed apparently the feature of mesoporous materials and the N2 adsorption-desorption curve was typical of a type IV isothermand contained a type H1 desorption hysteresis loop. These novel photocatalysts had a BET surface area of 675.1 m2·g-1, an average pore diameter of 5.78 nm and a BJH pore volume of 0.587 cm3·g-1, and were prepared by the F—C reaction between functionalized HMS and iron sulfophthalocyanine (FePcS). Additionally, the catalysts preserved an undamaged heavy mesoporous structure. Upon the irradiation of the simulated visible light, these novel catalysts were applied to the degradation of simulated phenol wastewater at a concentration of 1000 mg·L-1. The conversion of phenol reached 85%and the pH decreased from the original 4.52 to 2.65 after reaction time of 400 min, which indicated that acid intermediates were produced during the photocatalysis of phenol. Finally, the conversion rate of phenol was nearly 100% and the total organic carbon (TOC) removal rate exceeded 81%. The novel catalyst is, therefore, highly effective for the degradation of phenol.



Key wordsHexagonal mesoporous silica      Iron sulfophthalocyanine      Pore characteristics      Optimizing preparation      Photocatalysis     
Received: 01 February 2010      Published: 13 July 2010
MSC2000:  O643  
Fund:  

The project was supported by the National Natural Science Foundation of China (20803036), Plan on Scientific and Technological Personnel Serving Enterprise (2009GJA10014), Major Scientific and Technological Projects of Water Pollution Control and Treatment (2008ZX07314-003-2).

Corresponding Authors: GAO Guan-Dao     E-mail: gaoguandao@163.com
Cite this article:

GAO Guan-Dao, LI Jing, ZHANG Ai-Yong, AN Xiao-Hong, ZHOU Lei. Optimizational Preparation and Mesoporous Material Characteristics of a Novel Biomimetic Photocatalyst and Its Application to the Photocatalytic Degradation of Phenol. Acta Physico-Chimica Sinica, 2010, 26(09): 2437-2442.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20100910     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2010/V26/I09/2437

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