Controllable fabrication of Fluorite-type Bi4MoO9 nanocrystals with well-defined octahedral shape for visible-light photocatalytic degradation

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2024-11-22 DOI:10.1016/j.jallcom.2024.177714

Muhammad Nauman Tahir, Gui Yang, Yang Wu, Juan Long, Dan Xiong, Xiaomin Ren, Bin Huang, Xuejun Pan

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Abstract

The Fluorite-type Bi₄MoO₉ nanocrystals with well-defined octahedral shape were successfully synthesized via a facile hydrothermal route. The structural transformation from the Aurivillius-type Bi₂MoO₆ nanocrystals to the Fluorite-related nanocrystals (Bi₄MoO₉) can be efficiently and precisely controlled by regulating the pH value of the reaction. The influences of reaction time and temperature were investigated to gain a deep understanding of the formation process of octahedral-shaped Bi₄MoO₉. Furthermore, the photocatalytic activity results showed that the octahedral Bi₄MoO₉ single crystals manifested excellent photocatalytic activities for the degradation of tetracycline (TC), rhodamine B (RhB), and bisphenol A (BPA). Additionally, the possible degradation intermediates of TC were unraveled and the ecotoxicity changes of identified TC intermediates were evaluated in detail. This present study develops a novel morphology structure of Bi₄MoO₉ and highlights its promise in the field of environmental remediation.

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可控制备具有明确八面体形状的萤石型 Bi4MoO9 纳米晶体，用于可见光光催化降解

通过简便的水热法路线，成功合成了具有明确八面体形状的萤石型 Bi4MoO9 纳米晶体。通过调节反应的 pH 值，可以高效、精确地控制从奥里维利乌斯型 Bi2MoO6 纳米晶体到萤石相关纳米晶体（Bi4MoO9）的结构转变。研究了反应时间和温度的影响，以深入了解八面体形 Bi4MoO9 的形成过程。此外，光催化活性结果表明，八面体 Bi4MoO9 单晶在降解四环素（TC）、罗丹明 B（RhB）和双酚 A（BPA）方面表现出优异的光催化活性。此外，还揭示了 TC 可能的降解中间产物，并详细评估了已确定的 TC 中间产物的生态毒性变化。本研究发展了 Bi4MoO9 的新型形态结构，并强调了其在环境修复领域的应用前景。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.