Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO<sub>2 </sub>/bamboo charcoal composite

CHENG Da-li; JIANG Shen-xue; ZHANG Qi-sheng

doi:10.11833/j.issn.2095-0756.2010.02.007

Volume 27 Issue 2

Apr. 2010

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CHENG Da-li, JIANG Shen-xue, ZHANG Qi-sheng. Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO2 /bamboo charcoal composite[J]. Journal of Zhejiang A&F University, 2010, 27(2): 205-209. doi: 10.11833/j.issn.2095-0756.2010.02.007

Citation:

CHENG Da-li, JIANG Shen-xue, ZHANG Qi-sheng. Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO₂/bamboo charcoal composite[J]. Journal of Zhejiang A&F University, 2010, 27(2): 205-209. doi: 10.11833/j.issn.2095-0756.2010.02.007

Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO₂/bamboo charcoal composite

doi: 10.11833/j.issn.2095-0756.2010.02.007

1.
College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

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Corresponding author: ZHANG Qi-sheng
Publish Date: 2010-04-20

Abstract

TiO2/bamboo charcoal composite was prepared by loading TiO2 into bamboo charcoal. The photocatalytic activity of TiO2/bamboo charcoal composite was evaluated using phenol as a model substrate. The experimental results demonstrated that TiO2/bamboo charcoal composite had good adsorption capacity. The adsorption equilibrium constant（Ka） was 0.007 7 Lmg－1，Ka e （e referred to equilibrium adsorption concentration of phenol） was from 0.25 to 1.35. It was found that the Langmuir-Hinshelwood model in its integral form in describing the fraction order kinetics of phenol photocatalytic degradation in the TiO2/bamboo charcoal composite were better than its simplified form as a first-order reaction model，since the significant substrate adsorption on the catalysts was not negligible，the corresponding photocatalytic degradation reaction equation was：ln － 0.007 7 = 6.58 － 0.002 39t（ referred to phenol concentration，and t referred to adsorption time）.［Ch，6 fig. 14 ref.］
- forest engineering,
- bamboo charcoal,
- bamboo charcoal modified by nano-TiO2,
- phenol,
- photo-catalyze

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沈阳化工大学材料科学与工程学院沈阳 110142

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Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO₂/bamboo charcoal composite

1. College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: ZHANG Qi-sheng

Publish Date: 2010-04-20

Key words:

Abstract: TiO2/bamboo charcoal composite was prepared by loading TiO2 into bamboo charcoal. The photocatalytic activity of TiO2/bamboo charcoal composite was evaluated using phenol as a model substrate. The experimental results demonstrated that TiO2/bamboo charcoal composite had good adsorption capacity. The adsorption equilibrium constant（Ka） was 0.007 7 Lmg－1，Ka e （e referred to equilibrium adsorption concentration of phenol） was from 0.25 to 1.35. It was found that the Langmuir-Hinshelwood model in its integral form in describing the fraction order kinetics of phenol photocatalytic degradation in the TiO2/bamboo charcoal composite were better than its simplified form as a first-order reaction model，since the significant substrate adsorption on the catalysts was not negligible，the corresponding photocatalytic degradation reaction equation was：ln － 0.007 7 = 6.58 － 0.002 39t（ referred to phenol concentration，and t referred to adsorption time）.［Ch，6 fig. 14 ref.］

Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO₂/bamboo charcoal composite

doi: 10.11833/j.issn.2095-0756.2010.02.007

Abstract

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Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO₂/bamboo charcoal composite

doi: 10.11833/j.issn.2095-0756.2010.02.007

1. College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: ZHANG Qi-sheng

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Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO2 /bamboo charcoal composite

doi: 10.11833/j.issn.2095-0756.2010.02.007

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Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO2 /bamboo charcoal composite

doi: 10.11833/j.issn.2095-0756.2010.02.007

1. College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: ZHANG Qi-sheng

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Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO₂/bamboo charcoal composite

Kinetic behavior of adsorption and photo-catalytic degradation of phenol in TiO₂/bamboo charcoal composite