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

研究成果: Article同行評審

21 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)2987-2990
頁數4
期刊Environmental Technology (United Kingdom)
36
發行號23
DOIs
出版狀態Published - 2015 12月 2

All Science Journal Classification (ASJC) codes

  • 環境化學
  • 水科學與技術
  • 廢物管理和處置

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