Imperial College London
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DrAndreasKafizas

Faculty of Natural Sciences, Department of Chemistry

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 6752a.kafizas Website

 
 
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Location

 

301GMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Crake:2017:10.1016/j.apcatb.2017.03.039,
author = {Crake, A and Christoforidis, KC and Kafizas, A and Zafeiratos, S and Petit, C},
doi = {10.1016/j.apcatb.2017.03.039},
journal = {Applied Catalysis B: Environmental},
pages = {131--140},
title = {CO2 capture and photocatalytic reduction using bifunctional TiO2/MOF nanocomposites under UV-vis irradiation},
url = {http://dx.doi.org/10.1016/j.apcatb.2017.03.039},
volume = {210},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - TiO2 nanosheets and metal-organic framework (NH2-UiO-66) were effectively coupled via an insitu growth strategy to form bifunctional materials for the combined capture and photocatalytic reduction of CO2 under UV–vis light irradiation. This was done to take advantage of the high CO2 adsorption capacity of the MOF and the photocatalytic properties of pre-formed TiO2 nanosheets in a single material. The prepared materials were thoroughly characterized using a variety of techniques. They were subsequently tested for CO2 adsorption and CO2 photocatalytic reduction using a heterogeneous gas/solid set-up to imitate both CO2 capture and fixation in a single process. The adopted synthesis process allowed the development of a tight interaction between TiO2 and NH2-UiO-66 forming a heterojunction, while maintaining both the high CO2 uptake and porosity of NH2-UiO-66. The nanocomposites were proven durable and significantly more efficient in reducing CO2 to CO than their single components. Photocatalytic activity was greatly affected by the nanocomposites composition with the optimum TiO2 content doubling the CO evolution rate compared with the pure TiO2. The improved photoactivity was assigned to the enhanced abundance of long lived charge carriers, as revealed by transient absorption spectroscopy (TAS). This most likely occurred due to the effective charge transfer via interface. A possible mechanism is discussed on the basis of the combined catalytic, spectroscopic and CO2 adsorption results.
AU  - Crake,A
AU  - Christoforidis,KC
AU  - Kafizas,A
AU  - Zafeiratos,S
AU  - Petit,C
DO  - 10.1016/j.apcatb.2017.03.039
EP  - 140
PY  - 2017///
SN  - 0926-3373
SP  - 131
TI  - CO2 capture and photocatalytic reduction using bifunctional TiO2/MOF nanocomposites under UV-vis irradiation
T2  - Applied Catalysis B: Environmental
UR  - http://dx.doi.org/10.1016/j.apcatb.2017.03.039
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000400585500013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S0926337317302527
UR  - http://hdl.handle.net/10044/1/64140
VL  - 210
ER  -
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