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超声沉淀法制备Ti3C2/BiOI复合材料及其可见光催化性能

陈丹丹 李燕 王爱国 詹璇

陈丹丹, 李燕, 王爱国, 等. 超声沉淀法制备Ti3C2/BiOI复合材料及其可见光催化性能[J]. 复合材料学报, 2022, 39(10): 1-9 doi: 10.13801/j.cnki.fhclxb.20211101.003
引用本文: 陈丹丹, 李燕, 王爱国, 等. 超声沉淀法制备Ti3C2/BiOI复合材料及其可见光催化性能[J]. 复合材料学报, 2022, 39(10): 1-9 doi: 10.13801/j.cnki.fhclxb.20211101.003
Dandan CHEN, Yan LI, Aiguo WANG, Xuan ZHAN. Preparation of Ti3C2/BiOI composite material by precipitation under ultrasonic radiation and its photocatalytic properties under visible light[J]. Acta Materiae Compositae Sinica, 2022, 39(10): 1-9. doi: 10.13801/j.cnki.fhclxb.20211101.003
Citation: Dandan CHEN, Yan LI, Aiguo WANG, Xuan ZHAN. Preparation of Ti3C2/BiOI composite material by precipitation under ultrasonic radiation and its photocatalytic properties under visible light[J]. Acta Materiae Compositae Sinica, 2022, 39(10): 1-9. doi: 10.13801/j.cnki.fhclxb.20211101.003

超声沉淀法制备Ti3C2/BiOI复合材料及其可见光催化性能

doi: 10.13801/j.cnki.fhclxb.20211101.003
基金项目: 安徽省高校自然科学基金重点项目 (KJ2020A0476);安徽省重点研究与开发计划项目(202004611020033)
详细信息
    通讯作者:

    李 燕,博士,教授,硕士生导师,研究方向为无机功能材料 E-mail:lyc171805@163.com

  • 中图分类号: O643.3

Preparation of Ti3C2/BiOI composite material by precipitation under ultrasonic radiation and its photocatalytic properties under visible light

  • 摘要: 为提高BiOI在可见光下的光催化性能,采用氟化氢铵蚀刻碳钛化铝得到氧封端的Ti3C2,以五水合硝酸铋为铋源,碘化钾为碘源,利用超声沉淀法合成Ti3C2/BiOI复合材料。通过XRD、SEM、UV-vis、FT-IR、EIS、I-t、PL等手段对材料的组成、形貌、结构、光吸收、电化学阻抗、瞬态光电流响应、光谱响应等方面进行表征和测试。以甲基橙(MO)为目标污染物,模拟可见光照射下研究Ti3C2/BiOI复合材料的光催化性能。结果表明:BiOI成功负载到Ti3C2上,在模拟太阳光照射下,Ti3C2/BiOI复合材料表现出较高的光催化降解能力。其中Ti3C2质量分数为6wt%的Ti3C2/BiOI复合粉的光催化效率最高,在光照0.5 h后降解率达到91.6%,较纯BiOI提高4.5倍。氧封端的Ti3C2作为助催化剂及时转移光生电子,在电荷耗尽层保持了电荷分离,极大提高了光催化性能。

     

  • 图  1  Ti3C2、Ti3AlC2的XRD图谱

    Figure  1.  XRD patterns of Ti3AlC2 and Ti3C2

    图  2  Ti3C2、BiOI以及不同质量分数Ti3C2的Ti3C2/BiOI复合材料的XRD图谱

    Figure  2.  XRD patterns of Ti3C2, BiOI and Ti3C2/BiOI composites with different mass fractions of Ti3C2

    图  3  Ti3C2 (a)、BiOI (b)以及6wt%Ti3C2 /BiOI复合材料(c)的SEM图像

    Figure  3.  SEM images of Ti3C2 (a), BiOI (b) and 6wt%Ti3C2/BiOI composite (c)

    图  4  超声沉淀法制备Ti3C2/BiOI复合材料机制图

    Figure  4.  Mechanism diagram of preparation of Ti3C2/BiOI composite material by precipitation under ultrasonic radiation

    图  5  Ti3C2、BiOI以及不同质量分数Ti3C2的Ti3C2/BiOI复合材料模拟可见光降解甲基橙(MO)曲线

    Figure  5.  Simulated visible light degradation curves of methyl orange (MO) by Ti3C2, BiOI and Ti3C2/BiOI composite with different mass fractions of Ti3C2

    Ct—Pollutant concentration at the moment of t; C0—Original pollutant concentration

    图  6  Ti3C2、BiOI以及不同质量分数Ti3C2的Ti3C2/BiOI复合材料的光吸收边

    Figure  6.  Light absorption edge of Ti3C2, BiOI and Ti3C2/BiOI composites with different mass fractions of Ti3C2

    图  7  BiOI和6wt%Ti3C2/BiOI复合材料的能隙图

    Figure  7.  Energy gap of BiOI and 6wt%Ti3C2/BiOI composite

    Eg—Energy gap; αhv

    图  8  Ti3C2、BiOI以及6wt%Ti3C2/BiOI复合材料的红外光谱图

    Figure  8.  FT-IR spectrum of Ti3C2, BiOI and 6wt%Ti3C2/BiOI composite

    图  9  BiOI和6wt%Ti3C2/BiOI复合材料的电化学阻抗及波特图

    Figure  9.  Electrochemical impedance spectroscopy (EIS) Nyquist and Bode polt of BiOI and 6wt%Ti3C2/BiOI composite

    Rs—Internal resistance of electrolyte solution; Rp—Charge transfer resistance of the working electrode; CPE—Capacitance of a constant phase element

    图  10  BiOI以及6wt%Ti3C2/BiOI复合材料的瞬态光电流响应图

    Figure  10.  Transient photocurrent response imagine of BiOI and 6wt%Ti3C2/BiOI composite

    图  11  BiOI与6wt%Ti3C2/BiOI复合材料的光致发光图谱

    Figure  11.  Photoluminescence (PL) spectrum of BiOI and 6wt%Ti3C2/BiOI composite

    图  12  不同捕获剂对6wt%Ti3C2/BiOI复合材料光催化活性的影响

    Figure  12.  Effect of different capture agents on the photocatalytic activity of 6wt%Ti3C2/BiOI composite

    IPA—Isopropyl alcohol; p-BQ—p-Benzoquinone; EDTA—Ethylene diamine tetraacetic acid

    图  13  Ti3C2/BiOI复合材料光致电荷转移机制图

    Figure  13.  Mechanism of charge transfer processes of the Ti3C2/BiOI composite

    CB—Conduction band; VB—Valence band; Ef—Fermi level

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出版历程
  • 收稿日期:  2021-08-26
  • 录用日期:  2021-10-23
  • 修回日期:  2021-10-17
  • 网络出版日期:  2021-11-03
  • 刊出日期:  2022-10-15

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