Sol-hydrothermal synthesis of inorganic-framework molecularly imprinted TiO2/SiO2 nanocomposite and its preferential photocatalytic degradation towards target contaminant

Fang Deng; Yin Liu; Xubiao Luo; Shaolin Wu; Shenglian Luo; Chaktong Au; Ruoxi Qi

doi:10.1016/j.jhazmat.2014.05.088

Sol-hydrothermal synthesis of inorganic-framework molecularly imprinted TiO₂/SiO₂ nanocomposite and its preferential photocatalytic degradation towards target contaminant

Fang Deng
, Yin Liu
, Xubiao Luo
, Shaolin Wu
, Shenglian Luo^*
, Chaktong Au
, Ruoxi Qi

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

80 Citations (Scopus)

Abstract

Inorganic-framework molecularly imprinted TiO₂/SiO₂ nanocomposite (MIP-TiO₂/SiO₂) was successfully prepared by sol-hydrothermal method using 4-nitrophenol as template. The morphology, structure, optical property, zeta-potential and photocurrent of MIP-TiO₂/SiO₂ were characterized. The adsorption performance and photocatalytic selectivity were also studied. MIP-TiO₂/SiO₂ shows higher adsorption capacity and selectivity than the non-imprinted TiO₂/SiO₂ (NIP-TiO₂/SiO₂). Kinetics results show that the adsorption equilibrium of 4-nitrophenol on MIP-TiO₂/SiO₂ is established within 20min, and the adsorption process obeys the pseudo-second-order model. Moreover, MIP-TiO₂/SiO₂ can completely degrade 4-nitrophenol within 30min, while NIP-TiO₂/SiO₂ takes 110min. It was found that the MIP-TiO₂/SiO₂ photocatalyst shows molecular recognition ability, leading to selective adsorption and molecular recognitive photocatalytic degradation of 4-nitrophenol. Furthermore, because of its inorganic framework, MIP-TiO₂/SiO₂ shows excellent reusability.

Original language	English
Pages (from-to)	108-115
Number of pages	8
Journal	Journal of Hazardous Materials
Volume	278
DOIs	https://doi.org/10.1016/j.jhazmat.2014.05.088
Publication status	Published - 15 Aug 2014

User-Defined Keywords

Molecular recognition
Molecularly imprinted photocatalyst
Photocatalytic ability
Sol-hydrothermal method

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10.1016/j.jhazmat.2014.05.088

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@article{5a4983220b0a4fcbb92c626f69d66850,

title = "Sol-hydrothermal synthesis of inorganic-framework molecularly imprinted TiO2/SiO2 nanocomposite and its preferential photocatalytic degradation towards target contaminant",

abstract = "Inorganic-framework molecularly imprinted TiO2/SiO2 nanocomposite (MIP-TiO2/SiO2) was successfully prepared by sol-hydrothermal method using 4-nitrophenol as template. The morphology, structure, optical property, zeta-potential and photocurrent of MIP-TiO2/SiO2 were characterized. The adsorption performance and photocatalytic selectivity were also studied. MIP-TiO2/SiO2 shows higher adsorption capacity and selectivity than the non-imprinted TiO2/SiO2 (NIP-TiO2/SiO2). Kinetics results show that the adsorption equilibrium of 4-nitrophenol on MIP-TiO2/SiO2 is established within 20min, and the adsorption process obeys the pseudo-second-order model. Moreover, MIP-TiO2/SiO2 can completely degrade 4-nitrophenol within 30min, while NIP-TiO2/SiO2 takes 110min. It was found that the MIP-TiO2/SiO2 photocatalyst shows molecular recognition ability, leading to selective adsorption and molecular recognitive photocatalytic degradation of 4-nitrophenol. Furthermore, because of its inorganic framework, MIP-TiO2/SiO2 shows excellent reusability.",

keywords = "Molecular recognition, Molecularly imprinted photocatalyst, Photocatalytic ability, Sol-hydrothermal method",

author = "Fang Deng and Yin Liu and Xubiao Luo and Shaolin Wu and Shenglian Luo and Chaktong Au and Ruoxi Qi",

note = "Funding Information: This work was financially supported by Natural Science Foundation of China ( 50978132 , 51178213 , 51238002 , 51272099 , 51308278 , 51368045 ), Program for New Century Excellent Talents in University ( NCET-11-1004 ), Cultivating Program for Young Scientists of Jiangxi Province of China ( 20112BCB23016 ) Natural Science Foundation of Jiangxi Province ( 20122BAB213014 ) and Department of Education Fund of Jiangxi Province ( GJJ13506 ).",

year = "2014",

month = aug,

day = "15",

doi = "10.1016/j.jhazmat.2014.05.088",

language = "English",

volume = "278",

pages = "108--115",

journal = "Journal of Hazardous Materials",

issn = "0304-3894",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Sol-hydrothermal synthesis of inorganic-framework molecularly imprinted TiO2/SiO2 nanocomposite and its preferential photocatalytic degradation towards target contaminant

AU - Deng, Fang

AU - Liu, Yin

AU - Luo, Xubiao

AU - Wu, Shaolin

AU - Luo, Shenglian

AU - Au, Chaktong

AU - Qi, Ruoxi

N1 - Funding Information: This work was financially supported by Natural Science Foundation of China ( 50978132 , 51178213 , 51238002 , 51272099 , 51308278 , 51368045 ), Program for New Century Excellent Talents in University ( NCET-11-1004 ), Cultivating Program for Young Scientists of Jiangxi Province of China ( 20112BCB23016 ) Natural Science Foundation of Jiangxi Province ( 20122BAB213014 ) and Department of Education Fund of Jiangxi Province ( GJJ13506 ).

PY - 2014/8/15

Y1 - 2014/8/15

N2 - Inorganic-framework molecularly imprinted TiO2/SiO2 nanocomposite (MIP-TiO2/SiO2) was successfully prepared by sol-hydrothermal method using 4-nitrophenol as template. The morphology, structure, optical property, zeta-potential and photocurrent of MIP-TiO2/SiO2 were characterized. The adsorption performance and photocatalytic selectivity were also studied. MIP-TiO2/SiO2 shows higher adsorption capacity and selectivity than the non-imprinted TiO2/SiO2 (NIP-TiO2/SiO2). Kinetics results show that the adsorption equilibrium of 4-nitrophenol on MIP-TiO2/SiO2 is established within 20min, and the adsorption process obeys the pseudo-second-order model. Moreover, MIP-TiO2/SiO2 can completely degrade 4-nitrophenol within 30min, while NIP-TiO2/SiO2 takes 110min. It was found that the MIP-TiO2/SiO2 photocatalyst shows molecular recognition ability, leading to selective adsorption and molecular recognitive photocatalytic degradation of 4-nitrophenol. Furthermore, because of its inorganic framework, MIP-TiO2/SiO2 shows excellent reusability.

AB - Inorganic-framework molecularly imprinted TiO2/SiO2 nanocomposite (MIP-TiO2/SiO2) was successfully prepared by sol-hydrothermal method using 4-nitrophenol as template. The morphology, structure, optical property, zeta-potential and photocurrent of MIP-TiO2/SiO2 were characterized. The adsorption performance and photocatalytic selectivity were also studied. MIP-TiO2/SiO2 shows higher adsorption capacity and selectivity than the non-imprinted TiO2/SiO2 (NIP-TiO2/SiO2). Kinetics results show that the adsorption equilibrium of 4-nitrophenol on MIP-TiO2/SiO2 is established within 20min, and the adsorption process obeys the pseudo-second-order model. Moreover, MIP-TiO2/SiO2 can completely degrade 4-nitrophenol within 30min, while NIP-TiO2/SiO2 takes 110min. It was found that the MIP-TiO2/SiO2 photocatalyst shows molecular recognition ability, leading to selective adsorption and molecular recognitive photocatalytic degradation of 4-nitrophenol. Furthermore, because of its inorganic framework, MIP-TiO2/SiO2 shows excellent reusability.

KW - Molecular recognition

KW - Molecularly imprinted photocatalyst

KW - Photocatalytic ability

KW - Sol-hydrothermal method

UR - https://www.scopus.com/pages/publications/84902655567

U2 - 10.1016/j.jhazmat.2014.05.088

DO - 10.1016/j.jhazmat.2014.05.088

M3 - Journal article

C2 - 24953942

AN - SCOPUS:84902655567

SN - 0304-3894

VL - 278

SP - 108

EP - 115

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

ER -

Sol-hydrothermal synthesis of inorganic-framework molecularly imprinted TiO₂/SiO₂ nanocomposite and its preferential photocatalytic degradation towards target contaminant

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