NDLI: Synthesis of novel MgAl layered double oxide grafted TiO<sub>2</sub> cuboids and their photocatalytic activity on CO<sub>2</sub> reduction with water vapor

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Catalysis Science & Technology Vol - 5 Issue - 5

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Catalysis Science & Technology Vol - 5 Issue - 3

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Synthesis of novel MgAl layered double oxide grafted TiO₂ cuboids and their photocatalytic activity on CO₂ reduction with water vapor

Content Provider	Royal Society of Chemistry (RSC)
Author	Rao, Guiying Zhao, Huilei Li, Ying Zhao, Cunyu Liu, Lianjun Xu, Jinye Wang, Luhui
Copyright Year	2015
Abstract	A series of magnesium/aluminum (MgAl) layered double oxide (LDO) grafted TiO2 cuboids (MgAl-LDO/TiO2) with various molar ratios of (Mg + Al) to Ti were synthesized by a combination of hydrothermal and coprecipitation methods, in which the growth of MgAl-LDO platelets was controlled. The MgAl-LDO/TiO2 composite materials were used for photocatalytic CO2 reduction with water vapor under UV light irradiation in a continuous-flow reactor. CO was found to be the main product from CO2. At near room temperature (e.g., 50 °C), MgAl-LDO/TiO2 did not significantly enhance CO2 reduction compared with pure TiO2 cuboids. At a moderately elevated reaction temperature (e.g., 150 °C), the MgAl-LDO/TiO2 sample with an optimum 10 wt.% MgAl-LDO loading demonstrated CO2 reduction activity five times higher than that of bare TiO2 cuboids. The photo-induced electrons on TiO2 may migrate to the MgAl-LDO/TiO2 interfacial sites to promote CO2 reduction. Findings in this work may lead to a new area of hybrid adsorbent/photocatalyst materials that are capable of sequential CO2 capture and photocatalytic conversion.
Starting Page	3288
Ending Page	3295
Page Count	8
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	5
Issue Number	6
Journal	Catalysis Science & Technology
DOI	10.1039/c5cy00216h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Hydrothermal circulation Photocatalysis Magnesium Molar concentration Coprecipitation
Content Type	Text
Resource Type	Article
Subject	Catalysis

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