Characterization of V₂O₅/MoO₃ composite photocatalysts prepared via electrospinning and their photodegradation activity for dimethyl phthalate

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• 作者：Hongyuan Chuai^a ; Defeng Zhou^b ; ^{defengzhou65@126.com" class="auth_mail" title="E-mail the corresponding author} ; Xiaofei Zhu^b ; Zhaohui Li^b ; Weiping Huang^a ; ^{hwp914@nankai.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Electrospinning ; Vanadium pentoxide ; Molybdenum trioxide ; Composites ; Photodegradation activity ; Dimethyl phthalate
• 刊名：Chinese Journal of Catalysis
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：36
• 期：12
• 页码：2194-2202
• 全文大小：2192 K

文摘

Vanadium pentoxide (V₂O₅)/molybdenum trioxide (MoO₃) composites with different molar ratios of vanadium (V) to molybdenum (Mo) were synthesized via a simple electrospinning technique. The photocatalytic activity of the composites were evaluated by their ability to photodegrade methylene blue and dimethyl phthalate (DMP) under visible-light irradiation. Compared with pure V₂O₅ and MoO₃, the V₂O₅/MoO₃ composites showed enhanced visible-light photocatalytic activity because of a V 3d impurity energy level and the formation of heterostructures at the interface between V₂O₅ and MoO₃. The optimal molar ratio of V to Mo in the V₂O₅/MoO₃ composites was found to be around 1/2. Furthermore, high-performance liquid chromatographic monitoring revealed that phthalic acid was the main intermediate in the photocatalytic degradation process of DMP.