Enhanced visible light responsive MWCNT/TiO2 core-shell nanocomposites as the potential photocatalyst for reduction of CO2 into methane

Meei Mei Gui; Siang Piao Chai; Bo Qing Xu; Abdul Rahman Mohamed

doi:10.1016/j.solmat.2013.11.034

Enhanced visible light responsive MWCNT/TiO₂ core-shell nanocomposites as the potential photocatalyst for reduction of CO₂ into methane

Meei Mei Gui
, Siang Piao Chai^*
, Bo Qing Xu
, Abdul Rahman Mohamed

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

106 Citations (Scopus)

Abstract

This work demonstrates the synthesis of MWCNT/TiO₂ core-shell nanocomposites and their application for photocatalytic reduction of CO ₂ under visible light irradiation. MWCNT/TiO₂ core-shell nanocomposites were obtained from a newly developed coating approach. UV-vis analysis revealed that the photoactivity of the nanocomposites in the visible light range was significantly enhanced with the absorption edge extended to the visible light region (>400 nm). The XRD and Raman analysis indicated that the TiO₂ shell layer was composed of anatase TiO₂ nanocrystallite prevailing grew along the (1 0 1) direction. The MWCNT/TiO ₂ core-shell nanocomposites exhibited conversion of CO₂ into methane in a continuous process under a low power visible light irradiation at atmospheric pressure. The highest methane yield of ca. 0.17 μmol/g-catalyst/h was recorded at the 6th hour of irradiation time.

Original language	English
Pages (from-to)	183-189
Number of pages	7
Journal	Solar Energy Materials and Solar Cells
Volume	122
DOIs	https://doi.org/10.1016/j.solmat.2013.11.034
Publication status	Published - 01 Mar 2014
Externally published	Yes

Keywords

CO photoreduction
Core-shell
MWCNT/TiO
Nanocomposites
Photocatalysis
Visible light

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.solmat.2013.11.034

Cite this

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title = "Enhanced visible light responsive MWCNT/TiO2 core-shell nanocomposites as the potential photocatalyst for reduction of CO2 into methane",

abstract = "This work demonstrates the synthesis of MWCNT/TiO2 core-shell nanocomposites and their application for photocatalytic reduction of CO 2 under visible light irradiation. MWCNT/TiO2 core-shell nanocomposites were obtained from a newly developed coating approach. UV-vis analysis revealed that the photoactivity of the nanocomposites in the visible light range was significantly enhanced with the absorption edge extended to the visible light region (>400 nm). The XRD and Raman analysis indicated that the TiO2 shell layer was composed of anatase TiO2 nanocrystallite prevailing grew along the (1 0 1) direction. The MWCNT/TiO 2 core-shell nanocomposites exhibited conversion of CO2 into methane in a continuous process under a low power visible light irradiation at atmospheric pressure. The highest methane yield of ca. 0.17 μmol/g-catalyst/h was recorded at the 6th hour of irradiation time.",

keywords = "CO photoreduction, Core-shell, MWCNT/TiO, Nanocomposites, Photocatalysis, Visible light",

author = "Gui, \{Meei Mei\} and Chai, \{Siang Piao\} and Xu, \{Bo Qing\} and Mohamed, \{Abdul Rahman\}",

year = "2014",

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doi = "10.1016/j.solmat.2013.11.034",

language = "English",

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journal = "Solar Energy Materials and Solar Cells",

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T1 - Enhanced visible light responsive MWCNT/TiO2 core-shell nanocomposites as the potential photocatalyst for reduction of CO2 into methane

AU - Gui, Meei Mei

AU - Chai, Siang Piao

AU - Xu, Bo Qing

AU - Mohamed, Abdul Rahman

PY - 2014/3/1

Y1 - 2014/3/1

N2 - This work demonstrates the synthesis of MWCNT/TiO2 core-shell nanocomposites and their application for photocatalytic reduction of CO 2 under visible light irradiation. MWCNT/TiO2 core-shell nanocomposites were obtained from a newly developed coating approach. UV-vis analysis revealed that the photoactivity of the nanocomposites in the visible light range was significantly enhanced with the absorption edge extended to the visible light region (>400 nm). The XRD and Raman analysis indicated that the TiO2 shell layer was composed of anatase TiO2 nanocrystallite prevailing grew along the (1 0 1) direction. The MWCNT/TiO 2 core-shell nanocomposites exhibited conversion of CO2 into methane in a continuous process under a low power visible light irradiation at atmospheric pressure. The highest methane yield of ca. 0.17 μmol/g-catalyst/h was recorded at the 6th hour of irradiation time.

AB - This work demonstrates the synthesis of MWCNT/TiO2 core-shell nanocomposites and their application for photocatalytic reduction of CO 2 under visible light irradiation. MWCNT/TiO2 core-shell nanocomposites were obtained from a newly developed coating approach. UV-vis analysis revealed that the photoactivity of the nanocomposites in the visible light range was significantly enhanced with the absorption edge extended to the visible light region (>400 nm). The XRD and Raman analysis indicated that the TiO2 shell layer was composed of anatase TiO2 nanocrystallite prevailing grew along the (1 0 1) direction. The MWCNT/TiO 2 core-shell nanocomposites exhibited conversion of CO2 into methane in a continuous process under a low power visible light irradiation at atmospheric pressure. The highest methane yield of ca. 0.17 μmol/g-catalyst/h was recorded at the 6th hour of irradiation time.

KW - CO photoreduction

KW - Core-shell

KW - MWCNT/TiO

KW - Nanocomposites

KW - Photocatalysis

KW - Visible light

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DO - 10.1016/j.solmat.2013.11.034

M3 - Article

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SN - 0927-0248

VL - 122

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JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

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