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Effect of the Different Compound Systems on Photocatalytic Reduction of Cr(VI) by Titanium-Bearing Blast Furnace Slag
Alternative TitleEffect of the Different Compound Systems on Photocatalytic Reduction of Cr(VI) by Titanium-Bearing Blast Furnace Slag
Lei XueFei; Xue XiangXin
2008
Source PublicationACTA CHIMICA SINICA
ISSN0567-7351
Volume66Issue:22Pages:2539-2546
AbstractUsing calcined sulfate-modified titanium-bearing blast furnace slag (STBBFS) as photocatalyst, the photocatalytic activity of STBBFS photocatalyst toward a Cr(VI)-citric acid Cr(VI)-CA system and a Cr(VI)-citric acid-ferric nitrate Cr(VI)-CA-FN system was studied. The results indicate that the photocatalytic activity of STBBFS photocatalyst is more efficiently enhanced in the Cr(VI)-CA-FN compound system than in the single Cr(VI) or Cr(VI)-CA system, indicating that the photocatalytic activity of STBBFS photocatalyst can be improved in the presence of citric acid and ferric nitrate. The acidic solutions are favorable for the photocatalytic reduction of Cr(VI), and the optimum pH for the photocatalytic reduction of Cr(VI) is 2.5 in both compound systems. For the Cr(VI)-CA system, Cr(VI) is completely reduced after 50 min reaction tion when the photocatalytic activity of STBBFS photocatalyst is 0.426 mg.min(-1).g(-1). As for the Cr(VI)-CA-FN system, Cr(VI) is completely reduced after 16 min reaction when the photocatalytic activity of STBBFS photocatalyst is 1.2425 mg.min(-1).g(-1) In. Both the photocatalytic reductions of Cr(VI) in the Cr-(VI)-CA system and Cr(VI)-CA-FN system follow a Langmuir-Hinshel wood kinetic model. Though the effect of adsorption on the photocatalytic reduction of Cr(VI) was decreased, the adsorption of Cr(VI) on the catalyst surface still affected the photocatalytic activity of STBBFS photocatalyst remarkably.
KeywordAQUEOUS-SOLUTIONS HETEROGENEOUS PHOTOCATALYSIS TIO2 PARTICLES REMOVAL CHROMIUM(VI) ACID SUSPENSIONS WASTE IONS XPS sulfate-modified titanium-bearing blast furnace slag Cr(VI)-citric acid compound system Cr(VI)-citric acid-ferric nitrate compound system photocatalytic activity Cr(VI)
Indexed ByCSCD
Language英语
CSCD IDCSCD:3459299
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/152391
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Lei XueFei,Xue XiangXin. Effect of the Different Compound Systems on Photocatalytic Reduction of Cr(VI) by Titanium-Bearing Blast Furnace Slag[J]. ACTA CHIMICA SINICA,2008,66(22):2539-2546.
APA Lei XueFei,&Xue XiangXin.(2008).Effect of the Different Compound Systems on Photocatalytic Reduction of Cr(VI) by Titanium-Bearing Blast Furnace Slag.ACTA CHIMICA SINICA,66(22),2539-2546.
MLA Lei XueFei,et al."Effect of the Different Compound Systems on Photocatalytic Reduction of Cr(VI) by Titanium-Bearing Blast Furnace Slag".ACTA CHIMICA SINICA 66.22(2008):2539-2546.
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