Fe3+掺杂Bi3NbO7催化剂可见光降解碱性品红

doi:10.3969/j.issn.2095-2198.2024.02.005

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采用共沉淀法制备了Fe³⁺掺杂Bi₃NbO₇催化剂，并利用XRD、SEM、TEM和BET对制备的样品进行表征.结果表明：制备的Fe³⁺掺杂Bi₃NbO₇晶相单一，Fe³⁺进入了Bi₃NbO₇的晶格，呈现四方体和片状两种形状.可见光下对碱性品红染料降解测试结果显示：在碱性品红质量浓度为5 mg/L、催化剂添加量为1 g/L的条件下，光照240 min后碱性品红的降解率达到94.7%.光催化反应过程中，·OH和·O^-2是主要的活性基团，反应过程中吸附起到一定的影响.Fe³⁺掺杂Bi₃NbO₇含有一定量的氧空位，有利于提高光催化活性.

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关键词: Bi₃NbO₇')" href="#">

Bi₃NbO₇ Fe³⁺掺杂可见光碱性品红

Abstract:

Fe³⁺doped Bi₃NbO₇ photocatalyst was prepared by coprecipitation method.The prepared samples were characterized by XRD,SEM,TEM and BET.The characterization results showed that Fe³⁺ entered into the lattice of Bi₃NbO₇,forming a uniform phase.The sample exhibits cubic and lamellate shape.The photocatalytic activity test results showed that the prepared material gave a better visible light driven photocatalytic activity for basic fuchsine,that the degradation percentage of 94.7%can be obtained under the condition as the initiate fuchsine concentration of 5 mg/L,photocatalyst dosage of 1 g/L and irradiation time of 240 min.In the photocatalytic reaction process,·OH and ·O^-2 are the main active radicals,and the effect of adsorption cannot be ignored.Oxygen vacancy in the Fe³⁺ doped Bi₃NbO₇ benefits for the improvment of the photocatalytic activity under visible-light.

Key words: Bi₃NbO₇')" href="#">

Bi₃NbO₇ Fe³⁺ doped visible light basic fuchsine

出版日期: 2024-04-30 发布日期: 2025-01-02 整期出版日期: 2024-04-30

通讯作者: 申延明

作者简介: 索红月（1996—），女，辽宁法库人，硕士研究生在读，主要从事光催化剂的研究.

引用本文:

索红月, 阎美新, 申延明, 刘东斌, 樊丽辉.

Fe³⁺掺杂Bi₃NbO₇催化剂可见光降解碱性品红 [J]. 沈阳化工大学学报, 2024, 38(2): 119-126.
SUO Hongyue, YAN Meixin, SHEN Yanming, LIU Dongbin, FAN Lihui.

Degradation of Basic Fuchsine under Visible-Light on Fe³⁺ Doped Bi₃NbO₇ . Journal of Shenyang University of Chemical Technology, 2024, 38(2): 119-126.

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https://xuebao.syuct.edu.cn/CN/10.3969/j.issn.2095-2198.2024.02.005 或 https://xuebao.syuct.edu.cn/CN/Y2024/V38/I2/119

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