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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.12
- 수록면
- 133 - 139 (7page)
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초록· 키워드
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In this research, the photocatalytic degradation of benzothiophene in TiO<SUB>2</SUB> aqueous suspension has been studied. TiO<SUB>2</SUB> photocatalysts are prepared by a sol-gel method. The dominant anatase-structure on TiO<SUB>2</SUB> particles is observed after calcining the TiO<SUB>2</SUB> gel at 500℃ for 1hr. Photocatalysts with various transition metals (Nd, Pd and Pt) loading are tested to evaluate the effect of transition metal impurities on photodegradation. The photocatalytic degradation in most cases follows first-order kinetics. The maximum photodegradation efficiency is obtained with TiO<SUB>2</SUB> dosage of 0.4g/L. The photodegradation efficiency with Pt-TiO<SUB>2</SUB> is higher than pure TiO<SUB>2</SUB> powder. The optimal content value of Pt is 0.5wt%. Also we investigate the applicability of H<SUB>2</SUB>O<SUB>2</SUB> to increase the efficiency of the TiO<SUB>2</SUB> photocatalytic degradation of benzothiophene. The optimal concentration of <SUB>2</SUB>O<SUB>2</SUB> is 0.05M. The effect of pH is investigated; we obtain the maximum photodegradation efficiency at pH 9. Hydroxy- benzothiophenes and dihydroxybenzothiophenes are identified as reaction intermediates. It is proposed that benzothiophene is oxidized by OH radical to sequentially form hydroxyl-benzothiophenes, dihydroxybenzothiophenes, and benzothiophenedione.
목차
Abstract
1. Introduction
2. Experimental setup and method
3. Experimental results and discussion
4. Conclusions
References
참고문헌 (21)
참고문헌 신청
1. [학술지(정기간행물)] - Aaron Wold / 1992 / Photocatalytic Properties of TiO2 / Chem. Mater 5 : 280 ~ 283
2. [학술지(정기간행물)] - J. Kumar / 2012 / Photodegradation of amaranth in aqueous solution catalyzed by immobilized nanoparticles of titanium dioxide / Int. J. Environ. Sci. Technol 9 : 479 ~ 484
3. [학술지(정기간행물)] - J. Palau / 2012 / Photodegradation of Toluene, m-Xylene, and n-Butyl Acetate and Their Mixtures over TiO2 Catalyst on Glass Fibers / Ind. Eng. Chem. Res 51 : 5986 ~ 5994
4. [학술지(정기간행물)] - S. Cong / 2011 / Enhanced sorption and photodegradation of chlorophenol over fluoride-loaded TiO2 / Journal of Hazardous Materials 192 : 485 ~ 489
5. [학술지(정기간행물)] - T. Luenloi / / phenol catalyzed by TiO2 Coated on acrylic sheets: Kinetics and factorial design analysis / Desalination 274 : 192 ~ 199
2. [학술지(정기간행물)] - J. Kumar / 2012 / Photodegradation of amaranth in aqueous solution catalyzed by immobilized nanoparticles of titanium dioxide / Int. J. Environ. Sci. Technol 9 : 479 ~ 484
3. [학술지(정기간행물)] - J. Palau / 2012 / Photodegradation of Toluene, m-Xylene, and n-Butyl Acetate and Their Mixtures over TiO2 Catalyst on Glass Fibers / Ind. Eng. Chem. Res 51 : 5986 ~ 5994
4. [학술지(정기간행물)] - S. Cong / 2011 / Enhanced sorption and photodegradation of chlorophenol over fluoride-loaded TiO2 / Journal of Hazardous Materials 192 : 485 ~ 489
5. [학술지(정기간행물)] - T. Luenloi / / phenol catalyzed by TiO2 Coated on acrylic sheets: Kinetics and factorial design analysis / Desalination 274 : 192 ~ 199
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UCI(KEPA) : I410-ECN-0101-2016-550-001004095