Photocatalytic reduction of CO2 with SiC recovered from silicon sludge wastes

T. C. Yang; F. C. Chang; C. Y. Peng; H. Paul Wang; Y. L. Wei

doi:10.1080/09593330.2014.960474

Photocatalytic reduction of CO₂ with SiC recovered from silicon sludge wastes

T. C. Yang, F. C. Chang, C. Y. Peng, H. Paul Wang, Y. L. Wei

Department of Environmental Engineering

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

26 Citations (Scopus)

Abstract

In the present study, silicon carbide (SiC) recovered from silicon sludge wastes is used as catalysts for photocatalytic reduction of CO₂. By X-ray diffraction, it is clear that the main components in the silicon sludge wastes are silicon and SiC. The grain size of the SiC separated from the sludge waste is in the range of 10-20μm in diameter (observed by scanning electron microscopy). By solid state nuclear magnetic resonance, it is found that α-SiC is the main crystallite in the purified SiC. The α-SiC has the band-gap of 3.0eV. To yield C₁-C₂ chemicals from photocatalytic reduction of CO₂, hydrogen is provided by simultaneous photocatalytic splitting of H₂O. Under the light (253-2000nm) illumination, 12.03 and 1.22μmol/hg cat of formic and acetic acids, respectively, can be yielded.

Original language	English
Pages (from-to)	2987-2990
Number of pages	4
Journal	Environmental Technology (United Kingdom)
Volume	36
Issue number	23
DOIs	https://doi.org/10.1080/09593330.2014.960474
Publication status	Published - 2015 Dec 2

All Science Journal Classification (ASJC) codes

Environmental Chemistry
Water Science and Technology
Waste Management and Disposal

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abstract = "In the present study, silicon carbide (SiC) recovered from silicon sludge wastes is used as catalysts for photocatalytic reduction of CO2. By X-ray diffraction, it is clear that the main components in the silicon sludge wastes are silicon and SiC. The grain size of the SiC separated from the sludge waste is in the range of 10-20μm in diameter (observed by scanning electron microscopy). By solid state nuclear magnetic resonance, it is found that α-SiC is the main crystallite in the purified SiC. The α-SiC has the band-gap of 3.0eV. To yield C1-C2 chemicals from photocatalytic reduction of CO2, hydrogen is provided by simultaneous photocatalytic splitting of H2O. Under the light (253-2000nm) illumination, 12.03 and 1.22μmol/hg cat of formic and acetic acids, respectively, can be yielded.",

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AU - Yang, T. C.

AU - Chang, F. C.

AU - Peng, C. Y.

AU - Wang, H. Paul

AU - Wei, Y. L.

PY - 2015/12/2

Y1 - 2015/12/2

N2 - In the present study, silicon carbide (SiC) recovered from silicon sludge wastes is used as catalysts for photocatalytic reduction of CO2. By X-ray diffraction, it is clear that the main components in the silicon sludge wastes are silicon and SiC. The grain size of the SiC separated from the sludge waste is in the range of 10-20μm in diameter (observed by scanning electron microscopy). By solid state nuclear magnetic resonance, it is found that α-SiC is the main crystallite in the purified SiC. The α-SiC has the band-gap of 3.0eV. To yield C1-C2 chemicals from photocatalytic reduction of CO2, hydrogen is provided by simultaneous photocatalytic splitting of H2O. Under the light (253-2000nm) illumination, 12.03 and 1.22μmol/hg cat of formic and acetic acids, respectively, can be yielded.

AB - In the present study, silicon carbide (SiC) recovered from silicon sludge wastes is used as catalysts for photocatalytic reduction of CO2. By X-ray diffraction, it is clear that the main components in the silicon sludge wastes are silicon and SiC. The grain size of the SiC separated from the sludge waste is in the range of 10-20μm in diameter (observed by scanning electron microscopy). By solid state nuclear magnetic resonance, it is found that α-SiC is the main crystallite in the purified SiC. The α-SiC has the band-gap of 3.0eV. To yield C1-C2 chemicals from photocatalytic reduction of CO2, hydrogen is provided by simultaneous photocatalytic splitting of H2O. Under the light (253-2000nm) illumination, 12.03 and 1.22μmol/hg cat of formic and acetic acids, respectively, can be yielded.

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Photocatalytic reduction of CO₂ with SiC recovered from silicon sludge wastes

Abstract

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