Photocatalytic reduction of Cr(VI) over TiO₂-coated cellulose acetate monolithic structures using solar light

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• 作者：Belisa A. Marinho^a ; ^b ; ¹ ; Raquel O. Cristó ; vã ; o^a ; ¹ ; ^{raquel.cristovao@fe.up.pt} ; Ridha Djellabi^a ; José ; M. Loureiro^a ; Rui A.R. Boaventura^a ; Ví ; tor J.P. Vilar^a ; ^{vilar@fe.up.pt}
• 关键词：Hexavalent chromium reduction ; TiO2 monolithic structures ; Heterogeneous photocatalysis ; Citric acid ; Solar light
• 刊名：Applied Catalysis B: Environmental
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：203
• 期：Complete
• 页码：18-30
• 全文大小：2188 K
• 卷排序：203

文摘

Cellulose acetate monoliths coated with TiO2 were used for Cr(VI) photoreduction. The presence of citric acid enhanced Cr(VI) reduction by TiO2/UVA–vis system. The support allows an illuminated catalyst surface area per volume of 212 m2 m−3. The higher reduction rates were achieved with 6.9 mM of citric acid at pH 2.5. The immobilized TiO2 proved to be suitable for the continuous Cr(VI) reduction.