Citation: 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[J]. Acta Physico-Chimica Sinica, ;2010, 26(09): 2437-2442. doi: 10.3866/PKU.WHXB20100910 shu

Optimizational Preparation and Mesoporous Material Characteristics of a Novel Biomimetic Photocatalyst and Its Application to the Photocatalytic Degradation of Phenol

1.
Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, P. R. China

Received Date: 1 February 2010
Available Online: 13 July 2010
Fund Project: 国家自然科学基金项目(20803036) (20803036)科技人员服务企业行动(2009GJA10014) (2009GJA10014)水体污染控制与治理科技重大专项(2008ZX07314-003-2)基金资助 (2008ZX07314-003-2)

Hexa nal 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.
- Hexa nal mesoporous silica,
- Iron sulfophthalocyanine,
- Pore characteristics,
- Optimizing preparation,
- Photocatalysis
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