Direct growth of carbon nanotubes on Ni/TiO2 as next generation catalysts for photoreduction of CO2 to methane by water under visible light irradiation

Wee Jun Ong; Meei Mei Gui; Siang Piao Chai; Abdul Rahman Mohamed

doi:10.1039/c3ra00030c

Direct growth of carbon nanotubes on Ni/TiO2 as next generation catalysts for photoreduction of CO2 to methane by water under visible light irradiation

Wee Jun Ong, Meei Mei Gui, Siang Piao Chai^*, Abdul Rahman Mohamed

^*Corresponding author for this work

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

159 Citations (Scopus)

Abstract

In this communication, we demonstrate for the first time that CNT@Ni/TiO₂ nanocomposites were active in the photoreduction of CO₂ into methane (CH₄) under visible light irradiation. The nanocomposites were synthesized via co-precipitation followed by chemical vapor deposition at 750 °C. Our results showed that the band gap of the nanocomposites was 2.22 eV, leading to high absorption of visible light. The photocatalytic results exhibited the highest CH₄ yield of 0.145 μmol g_catalyst^-1 h^-1 using CNT@Ni/TiO ₂ nanocomposites compared with Ni/TiO₂ and pure anatase TiO₂ owing to the synergistic combination of the CNTs and TiO ₂.

Original language	English
Pages (from-to)	4505-4509
Number of pages	5
Journal	RSC Advances
Volume	3
Issue number	14
DOIs	https://doi.org/10.1039/c3ra00030c
Publication status	Published - 14 Apr 2013
Externally published	Yes

ASJC Scopus subject areas

General Chemical Engineering
General Chemistry

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title = "Direct growth of carbon nanotubes on Ni/TiO2 as next generation catalysts for photoreduction of CO2 to methane by water under visible light irradiation",

abstract = "In this communication, we demonstrate for the first time that CNT@Ni/TiO2 nanocomposites were active in the photoreduction of CO2 into methane (CH4) under visible light irradiation. The nanocomposites were synthesized via co-precipitation followed by chemical vapor deposition at 750 °C. Our results showed that the band gap of the nanocomposites was 2.22 eV, leading to high absorption of visible light. The photocatalytic results exhibited the highest CH4 yield of 0.145 μmol gcatalyst-1 h-1 using CNT@Ni/TiO 2 nanocomposites compared with Ni/TiO2 and pure anatase TiO2 owing to the synergistic combination of the CNTs and TiO 2.",

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T1 - Direct growth of carbon nanotubes on Ni/TiO2 as next generation catalysts for photoreduction of CO2 to methane by water under visible light irradiation

AU - Ong, Wee Jun

AU - Gui, Meei Mei

AU - Chai, Siang Piao

AU - Mohamed, Abdul Rahman

PY - 2013/4/14

Y1 - 2013/4/14

N2 - In this communication, we demonstrate for the first time that CNT@Ni/TiO2 nanocomposites were active in the photoreduction of CO2 into methane (CH4) under visible light irradiation. The nanocomposites were synthesized via co-precipitation followed by chemical vapor deposition at 750 °C. Our results showed that the band gap of the nanocomposites was 2.22 eV, leading to high absorption of visible light. The photocatalytic results exhibited the highest CH4 yield of 0.145 μmol gcatalyst-1 h-1 using CNT@Ni/TiO 2 nanocomposites compared with Ni/TiO2 and pure anatase TiO2 owing to the synergistic combination of the CNTs and TiO 2.

AB - In this communication, we demonstrate for the first time that CNT@Ni/TiO2 nanocomposites were active in the photoreduction of CO2 into methane (CH4) under visible light irradiation. The nanocomposites were synthesized via co-precipitation followed by chemical vapor deposition at 750 °C. Our results showed that the band gap of the nanocomposites was 2.22 eV, leading to high absorption of visible light. The photocatalytic results exhibited the highest CH4 yield of 0.145 μmol gcatalyst-1 h-1 using CNT@Ni/TiO 2 nanocomposites compared with Ni/TiO2 and pure anatase TiO2 owing to the synergistic combination of the CNTs and TiO 2.

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Direct growth of carbon nanotubes on Ni/TiO2 as next generation catalysts for photoreduction of CO2 to methane by water under visible light irradiation

Abstract

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