纺织学报 ›› 2022, Vol. 43 ›› Issue (10): 112-118.doi: 10.13475/j.fzxb.20210805808

• 染整与化学品 • 上一篇    下一篇

氮碳量子点/二氧化钛复合整理粘胶织物光催化协同构效

冯艳1,2,3, 李亮1,2,4, 刘淑萍1,2,3, 李淑静1,2,3, 刘让同1,2,3()   

  1. 1.纺织服装产业河南省协同创新中心, 河南 郑州 450007
    2.河南省功能纺织材料重点实验室, 河南 郑州450007
    3.中原工学院 服装学院, 河南 郑州 450007
    4.中原工学院 纺织学院, 河南 郑州 450007
  • 收稿日期:2021-08-13 修回日期:2022-06-29 出版日期:2022-10-15 发布日期:2022-10-28
  • 通讯作者: 刘让同
  • 作者简介:冯艳(1979—),女,讲师,硕士。主要研究方向为纺织服装新材料。
  • 基金资助:
    国家重点研发计划项目(2017YFB0309100)

Photocatalytic synergistic efficiency of viscose fabric loaded with nitrogen carbon quantum dots/titanium dioxide

FENG Yan1,2,3, LI Liang1,2,4, LIU Shuping1,2,3, LI Shujing1,2,3, LIU Rangtong1,2,3()   

  1. 1. Henan Provincial Collaborative Innovation Center of Textile and Clothing, Zhengzhou, Henan 450007, China
    2. Henan Provincial Key Laboratory of Functional Textile Materials, Zhengzhou, Henan 450007, China
    3. College of Fashion Technology, Zhongyuan University of Technology, Zhengzhou, Henan 450007, China
    4. Textile College, Zhongyuan University of Technology, Zhengzhou, Henan 450007, China
  • Received:2021-08-13 Revised:2022-06-29 Published:2022-10-15 Online:2022-10-28
  • Contact: LIU Rangtong

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摘要：

为提高服装面料在太阳光下的光催化自清洁性能,采用柠檬酸和尿素制备氮碳量子点(N-CQDs),并通过水热法与纳米二氧化钛(TiO2)共同整理粘胶织物,制备出太阳光响应复合光催化纺织品。借助扫描电子显微镜、红外光谱仪、紫外-可见分光光度计等对整理前后的粘胶织物进行表征,测试其光学吸收性、光催化降解脱色性和稳定性,研究N-CQDs、TiO2及其复合体系降解罗丹明B的协同构效机制。结果表明:在模拟日光下催化降解罗丹明B 5 h时,经N-CQDs/TiO2整理的粘胶织物脱色率为76.5%,比经TiO2整理粘胶织物的脱色率(51.3%)提高了49.1%,且循环降解6次后,脱色率仍能达到62.34%。

关键词: 粘胶织物, 氮掺杂碳量子点, 二氧化钛, 太阳光催化降解, 协同机制

Abstract:

In order to improve the self-cleaning performance of clothing fabrics under sunlight, nitrogen-doped carbon quantum dots (N-CQDs) were prepared from citric acid and urea, and the composite photocatalytic textiles were created through hydrothermal treatment of viscose fabrics loaded with nitrogen-doped carbon quantum dots and nano titanium dioxide. The viscose fabrics were characterized by means of scanning electron microscope, infrared spectrometer, and ultraviolet-visible photometer, and heir optical absorption, photocatalytic degradation and stability were tested. The synergistic mechanism of degradation of Rhodamine B (RhB) by N-CQDs, TiO2 and their composite systems were studied. The results show that the decolorization rate of fabric loaded with N-CQDs/TiO2 is 76.5%, which is 49.1% higher than that of fabric loaded with TiO2, and the decolorization rate can still reach 62.34% after 6 cycles of photocatalytic degradation of RhB.

Key words: viscose fabric, nitrogen doped carbon quantum dots, titanium dioxide, solar photocatalytic degradation, synergistic mechanism

中图分类号: 

  • TS195.5

图1

N-CQDs的TEM照片和粒径分布图"

图2

粘胶织物的实物照片和SEM照片"

图3

N-CQDs粉末和不同试样的红外光谱图"

图4

N-CQDs/TiO2整理粘胶织物的XPS图"

图5

试样的紫外-可见漫反射光谱图"

图6

RhB在粘胶织物光催化降解下的脱色率与时间关系"

图7

N-CQDs/TiO2和TiO2整理织物的循环光催化降解下RhB的脱色率与循环次数关系"

图8

N-CQDs/TiO2光催化降解RhB机制示意图"

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