Bi/BiVO 4 Chainlike Hollow Microstructures: Synthesis, Characterization, and Application as Visible-Light-Active Photocatalysts

作者：Qifeng Jing, Xinyan Feng, Xiaojun Zhao, Zeyu Duan, Jiangling Pan, Limiao Chen, You‐Nian Liu · 发表于：ACS Applied Nano Materials · 年份：2018 · DOI：10.1021/acsanm.8b00330 · 被引用次数：70 · 研究领域：Advanced Photocatalysis Techniques、Gas Sensing Nanomaterials and Sensors、Luminescence Properties of Advanced Materials

Bi/BiVO 4 microstructures with novel hollow chainlike morphology were successfully fabricated for the first time, and their application as photocatalyst is explored. Composites composed of metallic Bi and amorphous BiVO 4 (denoted as Bi/a-BiVO 4 ) are first prepared through a simple solvothermal route using ethylene glycol as solvent and then hydrothermally treated in a basic solution to crystallize BiVO 4 . The Bi content in the Bi/BiVO 4 microstructures can be facilely adjusted by changing the molar ratio of Bi 3+ to V 5+ in the reaction system. The photocatalytic activity of the Bi/BiVO 4 microstructures is assessed by photodegradation of rhodamine B (RhB) under visible-light illumination. The Bi/BiVO 4 microstructures exhibit an obviously improved photocatalytic performance compared to the BiVO 4 and Bi. The synergistic effects of BiVO 4 and Bi may contribute to the improved photocatalytic activity. The present research may provide a new approach to design and fabricate BiVO 4 -based photocatalyst with high photocatalytic activity.