Citation: Guoqiang Shen, Lun Pan, Zhe Lü, Chongqing Wang, Fazal-e-Aleem, Xiangwen Zhang, Ji-Jun Zou. Fe-TiO₂ and Fe₂O₃ quantum dots co-loaded on MCM-41 for removing aqueous rose bengal by combined adsorption/photocatalysis[J]. Chinese Journal of Catalysis, ;2018, 39(5): 920-928. doi: 10.1016/S1872-2067(17)62976-0 shu

Fe-TiO₂ and Fe₂O₃ quantum dots co-loaded on MCM-41 for removing aqueous rose bengal by combined adsorption/photocatalysis

Guoqiang Shen ^a,b, ,
Lun Pan ^a,b ,
Zhe Lü ^a,b ,
Chongqing Wang ^a,b ,
Fazal-e-Aleem ^c ,
Xiangwen Zhang ^a,b ,
Ji-Jun Zou ^a,b

a Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin Unviersity, Tianjin 300072, China;
b Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China;
c Department of Physics, The University of Lahore, Lahore 54600, Pakistan

Received Date: 20 December 2017
Revised Date: 19 January 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (21506156, 51661145026, 21676193), the Tianjin Municipal Natural Science Foundation (15JCZDJC37300, 16JCQNJC05200), and the Pakistan Science Foundation (PSF/257NSFC-Eng/P-UoL (02)).

Adsorption and photodegradation are promising approaches for removing organic pollutions. In this study, we combined these two processes by co-loading Fe-TiO₂ and Fe₂O₃ quantum dots (QDs) on porous MCM-41, using a simple hydrolysis method. X-ray diffraction, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy results indicated that Fe-TiO₂ QDs are formed at low Fe precursor concentrations, while additional Fe₂O₃ QDs are formed at higher Fe precursor concentrations. The Fe₂O₃ and Fe-TiO₂ QDs impart high adsorption capacity and high photoactivity to the porous MCM-41, respectively. Thus, their combination results in a synergic effect of the adsorption and photodegradation. The highest-performing sample exhibits excellent performance in removing rose bengal from aqueous solution.
- Quantum dot,
- Titania,
- Ferric oxide,
- Photocatalysis,
- Adsorption
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Fe-TiO2 and Fe2O3 quantum dots co-loaded on MCM-41 for removing aqueous rose bengal by combined adsorption/photocatalysis

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通讯作者: 陈斌, bchen63@163.com

Fe-TiO₂ and Fe₂O₃ quantum dots co-loaded on MCM-41 for removing aqueous rose bengal by combined adsorption/photocatalysis