一种由纳米棒组成的微米立方体状等比例BiVO4与Bi2VO5二元异质结构及其制备方法

Micrometer-sized cubic BiVO4 and Bi2VO5 heterostructures composed of nanorods were prepared by microwave irradiation, which solved the problem of low photocatalytic activity of BiVO4 material and achieved efficient and low-cost improvement of photocatalytic performance.

CN117208957BActive Publication Date: 2026-07-17SUZHOU UNIV OF SCI & TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU UNIV OF SCI & TECH
Filing Date
2023-06-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing BiVO4 materials have low photocatalytic activity. Traditional synthesis methods require high temperature and high pressure, are complex to operate, costly, and difficult to precisely control morphology and phase, resulting in insufficient photocatalytic performance.

Method used

Micron-sized cubic binary heterostructures of BiVO4 and Bi2VO5 in equal proportions, composed of nanorods, were prepared by microwave irradiation. Sodium dodecylbenzenesulfonate (SDBS) was used as a surfactant to prevent particle agglomeration. The heterostructure with high specific surface area was formed by low-temperature reaction under normal pressure.

Benefits of technology

The preparation of BiVO4 and Bi2VO5 heterostructures was achieved safely, controllably, and at low cost, exhibiting high photocatalytic activity. This simplified the operation process and reduced equipment requirements and energy consumption.

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Abstract

本发明公开了一种由纳米棒组成的微米立方体状等比例BiVO4与Bi2VO5二元异质结构及其制备方法,该方法用蒸馏水作溶剂、涉及硝酸铋(Bi(NO3)3·5H2O)与偏钒酸铵(NH4VO3)两种反应原料与十二烷基苯磺酸钠(SDBS)一种表面活性剂,通过磁力搅拌作用配置Bi(NO3)3·5H2O、NH4VO3与SDBS均匀混合的反应前驱体溶液;混合溶液经过一步微波作用后,将产物离心过滤、洗涤、干燥得到由纳米棒组成的微米立方体结构等比例BiVO4与Bi2VO5的二元异质材料。通过控制反应工艺操作与优化关键实验参数实现了对产物形貌与物相的调控,产品为尺寸小、比表面积高、分布均匀且形貌均一的等比例BiVO4与Bi2VO5二元异质结构微米立方体;工艺过程安全简便、绿色环保、原料廉价易得、经济高效,无需后续处理,有望成为提升单一物相钒酸铋材料光催化活性的一种有效手段,具有重要研究意义。
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