纺织学报 ›› 2022, Vol. 43 ›› Issue (06): 100-106.doi: 10.13475/j.fzxb.20210604907

• 染整与化学品 • 上一篇    下一篇

还原氧化石墨烯/粘胶基钒酸铋光催化材料的制备及其性能

钱佳琪1, 瞿建刚1(), 胡啸林1, 毛庆辉1,2   

  1. 1.南通大学 纺织服装学院, 江苏 南通 226019
    2.国家先进印染技术创新中心, 山东 泰安 271000
  • 收稿日期:2021-06-21 修回日期:2022-03-24 出版日期:2022-06-15 发布日期:2022-07-15
  • 通讯作者: 瞿建刚
  • 作者简介:钱佳琪(1996—),女,硕士生。主要研究方向为功能复合材料的制备。
  • 基金资助:
    南通市基础科学研究项目(JC2019007);生态纺织教育部重点实验室开放基金项目(KLE1708)

Preparation and property of reduced graphene oxide/viscose-based BiVO4 photocatalyst

QIAN Jiaqi1, QU Jian'gang1(), HU Xiaolin1, MAO Qinghui1,2   

  1. 1. School of Textile and Clothing, Nantong University, Nantong, Jiangsu 226019, China
    2. National Advanced Printing and Dyeing Technology Innovation Center, Taian, Shandong 271000, China
  • Received:2021-06-21 Revised:2022-03-24 Published:2022-06-15 Online:2022-07-15
  • Contact: QU Jian'gang

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摘要：

针对钒酸铋(BiVO4)光催化效率低、难回收的缺点,利用硅烷偶联剂KH-560和氧化石墨烯(GO)依次对粘胶非织造布改性,再利用搅拌水热法在其表面生长BiVO4制备还原氧化石墨烯(RGO)/粘胶基BiVO4光催化材料。采用扫描电子显微镜、X射线衍射、X射线光电子能谱和紫外-可见吸收光谱对材料进行了表征,并研究了RGO/粘胶基BiVO4材料的光催化活性、重复使用性能和光催化机制。结果表明:BiVO4成功负载在RGO/粘胶非织造布表面,得到了RGO/粘胶基BiVO4光催化材料;在1 kW氙灯照射下,90 min内对活性黑5脱色率达到95%以上,重复5次后仍达到92%以上;自由基捕捉实验表明,光生空穴、超氧自由基和羟基自由基参与了光化学反应,其中羟基自由基的作用最大。

关键词: 石墨烯, 粘胶, 钒酸铋, 光催化, 活性黑5, 废水处理

Abstract:

In order to overcome the disadvantages of low photocatalytic efficiency and recyclability of BiVO4, silane coupling agent KH-560 and graphene oxide (GO) were used to modify the viscose nonwoven fabrics, then BiVO4 was grown on its surface by stirring hydrothermal method to prepare reduced graphene oxide (RGO)/viscose-based BiVO4 photocatalyst. The materials as prepared were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and ultraviolet visible absorption spectroscopy. The photocatalytic activity, reusability and photocatalytic mechanism of RGO/viscose based BiVO4 photocatalyst for C.I. Reactive Black 5 decolorization were studied. The results show that BiVO4 is successfully loaded on RGO/viscose nonwovens and consequently RGO/viscose-based BiVO4 photocatalytic materials are obtained. Under the irradiation of 1 kW xenon lamp, the decolorization rate can reach up to 95% in 90 min, and over 92% is preserved even after five recycles. Furthermore, free radical capture experiments show that photogenerated hole, superoxide radical and hydroxyl radical participate in the photocatalytic reaction, and among which the hydroxyl radical is the most important.

Key words: graphene, viscose, BiVO4, photocatalysis, C.I. Reactive Black 5, waste water treatment

中图分类号: 

  • TS190.3

图1

不同样品的扫描电镜照片 注:图(c)和(d)中的插图为织物的导电性能测试图。"

图2

V-K、GO/V-K和BiVO4/RGO/V-K的X射线衍射图谱"

图3

V-K、GO/V-K和BiVO4/RGO/V-K的XPS谱图和BiVO4/RGO/V-K的V、C、O的高分辨XPS谱图"

图4

粘胶、V-K、GO/V-K、BiVO4/V-K和BiVO4/RGO/V-K的紫外-可见吸收光谱"

图5

BiVO4/V-K和BiVO4/RGO/V-K的带隙能"

图6

V-K、GO/V-K、BiVO4/V-K和BiVO4/RGO/V-K对RB5的光催化性能"

图7

降解前后RB5的可见光谱"

图8

BiVO4/RGO/V-K的重复光催化性能"

图9

不同捕捉剂对BiVO4/RGO/V-K的光催化效果"

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