Sn3O4基光催化纳米材料研究进展：改性及应用

Advances in Sn3O4-based photocatalytic nanomaterials: modification and application

摘要:

目前在治理环境污染等领域中，光催化技术因具有可反复使用、反应条件简单温和、对环境无污染、性能稳定等特点，而得到普遍的研究和应用。光催化材料因具有高的比表面积和更多的表面缺陷，使其在纳米尺度上更具发展潜力。当前，四氧化三锡(Sn3O4)纳米材料由于其绿色环保、有丰富的储量等特点备受瞩目，且其是具有合适的禁带宽度（2.5~2.8 eV）、层状结构、Sn2+/Sn4+等多种价态的n型半导体，有望成为一种潜在的新型可见光催化材料。针对于些，本文对Sn3O4基纳米材料的改性及其在光催化方面的研究进展进行了总结和概括，重点介绍了Sn3O4基光催化材料的合成方法（包括碳热法、蒸发法、退火法和溶剂热法）及其性能的调控，并概括了Sn3O4基纳米材料在污水降解处理、光解制氢、气体传感器、锂离子电池电极等方面的应用。最后，对新型Sn3O4基纳米材料的研究前景和发展方向进行了展望。

Abstract:

At present, photocatalytic technology is commonly researched and applied in the field of controlling environmental pollution and other fields because of its repeated use, simple and mild reaction conditions, no pollution to the environment, stable performance, and other characteristics. Photocatalytic materials have more potential for development on the nanoscale due to their high specific surface area and more surface defects. Currently, tin tetroxide nanomaterials have attracted much attention due to their green and abundant reserves, and they are n-type semiconductors with suitable forbidden bandwidths (2.5~2.8 eV), layered structures, and multiple valence states such as Sn2+/Sn4+, which are expected to be a potential new type of visible photocatalytic materials. Therefore, the modification of Sn3O4-based nanomaterials and their research progress in photocatalysis are summarized and generalized. It focuses on the synthesis methods of Sn3O4-based photocatalytic materials (including carbon thermal, evaporation, annealing, and solvothermal methods) and their performance control. In addition, the application of Sn3O4-based nanomaterials in sewage degradation treatment, photocatalytic hydrogen production, gas sensors, and lithium-ion battery electrodes are also intensively discussed. Finally, the research prospects and development directions of new Sn3O4-based nanomaterials are prospected.