Tailored Fabrication of Thoroughly Mesoporous BiVO4 Nanofibers and Their Visible-Light Photocatalytic Activities

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• 作者：Huabing Liu ; Huilin Hou ; Fengmei Gao ; Xiaohong Yao ; Weiyou Yang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：January 27, 2016
• 年：2016
• 卷：8
• 期：3
• 页码：1929-1936
• 全文大小：546K
• ISSN：1944-8252

文摘

Bismuth vanadate (BiVO₄) is considered as a potentially attractive candidate for the O₂ evolution and photodegradation of organic pollutants. In an effort to develop visible-light-driven photocatalysts with high activities, the thoroughly mesoporous BiVO₄ nanofibers were fabricated via a foaming-assisted electrospinning strategy. It was found that the introduced foaming agent of diisopropyl azodiformate within the solutions plays a crucial role on the formation of thoroughly mesoporous BiVO₄ nanofibers, making their growth tunable. The obtained mesoporous BiVO₄ nanofibers possess well-defined one-dimensional mesoporous architectures with high purity in their morphology and a surface area of 22.5 m²/g, which is ～4 times that of conventional solid counterparts (5.8 m²/g). Accordingly, they exhibit much higher efficient photocatalytic activities toward the degradation of rhodamine B under visible-light irradiation, which is 3 times that of conventional solid counterparts, suggesting their promising application as novel and efficient photocatalysts for water purification.