一步水热法制备BiBi2MoO6复合材料及其光电性能研究.PDFVIP

中国科技论文在线 一步水热法制备Bi/Bi MoO 复合材料及其 2 6 光电性能研究 # 张茜，沈铸睿** 5 （天津大学材料科学与工程学院，天津300350 ） 摘要：本文采用简单的一步水热还原法制备出Bi/Bi2MoO6 复合材料并对其光电性能进行了 研究。在水热反应过程中，赖氨酸将 Bi3+离子还原成金属态的Bi。通过XRD、SEM、TEM、 HRTEM、XPS 和FT-IR 对样品的形貌、结构和化学组分进行表征。Bi/Bi2MoO6 复合材料具有 10 Bi2MoO6 纳米片包裹在Bi 微球的表面的特殊结构，其中，Bi2MoO6 纳米片的厚度为10-20 nm。 电化学测试结果表明，Bi/Bi2MoO6 复合材料能够显著增强光生电子的分离效率，BiMo-4L 样品的光电流大约是单纯地Bi2MoO6 的15 倍。 关键词：复合材料；Bi；Bi2MoO6；光电性能 中图分类号：TB333 15 One-step hydrothemal method to synthesize Bi/Bi MoO 2 6 composite for photoelectric catalyst ZHANG Qian, SHEN Zhurui (School of Materials Science and Engineering, Tianjin University, Tianjin 300350) 20 Abstract : In this paper, we discovered a facile one-step hydrothermal reduction method to prepare Bi/Bi2MoO6 composite and its photoelectric property was investigated. During the solvent-controlled reaction process, lysine performed as the reductant to in situ reduce Bi3+ to metallic Bi. XRD, SEM, TEM, HRTEM, XPS and FT-IR were used to characterize the morphology, structure and chemical composition of the samples obtained. Bi/Bi2MoO6 composites have special structure of Bi2MoO6 25 nanosheets surrounding on the surface of Bi microspheres, besides, the Bi2MoO6 nanosheets have a thickness of 10-20 nm. Futhermore, electrochemical test results show that the Bi/Bi2MoO6 composites can significantly enhance the separation effici