纺织学报 ›› 2022, Vol. 43 ›› Issue (10): 106-111.doi: 10.13475/j.fzxb.20210704006

• 染整与化学品 • 上一篇    下一篇

多酸基金属-有机框架负载棉织物的制备及其光催化性能

郑琳娟1, 郁佳1, 尹冲2, 梁志结1, 毛庆辉1()   

  1. 1.南通大学 纺织服装学院, 江苏 南通 226019
    2.南通海盟实业股份有限公司, 江苏 南通 226000
  • 收稿日期:2021-07-14 修回日期:2022-04-21 出版日期:2022-10-15 发布日期:2022-10-28
  • 通讯作者: 毛庆辉
  • 作者简介:郑琳娟(1997—),女,硕士生。主要研究方向为生态染整新技术。
  • 基金资助:
    南通市科技计划项目(JC2020086);南通市科技计划项目(JC2020126)

Preparation and photocatalytic properties of cotton fabrics loaded with polymetallic organic framework material

ZHENG Linjuan1, YU Jia1, YIN Chong2, LIANG Zhijie1, MAO Qinghui1()   

  1. 1. School of Textile and Clothing, Nantong University, Nantong, Jiangsu 226019, China
    2. Nantong Hymo Industrial Co., Ltd., Nantong, Jiangsu 226000, China
  • Received:2021-07-14 Revised:2022-04-21 Published:2022-10-15 Online:2022-10-28
  • Contact: MAO Qinghui

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摘要：

为制备具有光催化性能的棉织物,通过引入金属有机框架材料,将尺寸适合的多金属氧酸盐装入其中,从而实现多金属氧酸盐在棉织物上的原位生长。研究了金属离子反应时间、多金属氧酸盐用量、有机配体和多金属氧酸盐的反应时间对制备的负载有多酸基金属-有机框架(POMOF)棉织物光催化性能的影响,借助扫描电子显微镜、傅里叶红外光谱仪等对POMOF负载棉织物的形貌与结构进行表征。结果表明:对棉织物进行羧基化改性,可在其表面形成多的活性位点;当改性棉织物在硝酸铜溶液中反应12 h,均苯三甲酸与多钨酸盐的量比为 1∶14, 有机配体和多酸的反应时间为10 h时,POMOF负载棉织物在135 min内对罗丹明B溶液(10 mg/L)的降解率达92.23%;该POMOF负载棉织物具有良好的光催化性能,在印染废水降解方面有较大潜力。

关键词: 多钨酸盐, 金属-有机框架, 罗丹明B, 光催化降解, 废水处理, 印染废水

Abstract:

To prepare cotton fabrics with photocatalytic properties, the in-situ growth of polyacids on cotton fabrics was achieved by introducing metal organic framework materials into which polymetallic oxides of suitable dimensions were loaded. The effects of metal ion reaction time, amount of polymetallic acid, organic ligand and reaction time of polymetallic acid on the photocatalytic performance of the prepared cotton fabrics loaded with polymetallic organic framework material (POMOF) were investigated, and the morphology and structure of cotton fabrics loaded with POMOF were characterized with the aid of scanning electron microscopy and FT-IR spectrometry. The results show that the carboxylation modification of cotton fabrics is able to form multiple active sites on its surface, and the degradation rate of cotton fabrics loaded with POMOF to Rhodamine B solution (10 mg/L) reached 92.23% in 135 min when the modified cotton fabric was reacted in copper nitrate solution for 12 h, the amount ratio of homophthalic acid to polytungstate was 1∶4, and the reaction time of organic ligand and polyacid was 10 h. This cotton fabric loaded with POMOF demonstrated good photocatalytic performance and has great potential in the degradation of printing and dyeing wastewater.

Key words: polytungstate, metal-organic frame, Rhodamine B, photocatalytic degradation, wastewater treatment, printing and dyeing wastewater

中图分类号: 

  • TS195.5

图1

棉织物羧基改性前后的SEM照片"

图2

不同反应时间下棉织物上铜离子的含量"

图3

POMOF在棉织物上原位生长机制"

表1

多钨酸盐用量对罗丹明B光催化降解率的影响"

有机配体与多
钨酸盐的量比		 降解
率/%		 有机配体与多
钨酸盐的量比		 降解
率/%
1∶10 78.07 1∶14 92.23
1∶11 77.64 1∶15 92.96
1∶12 82.51 1∶16 93.12
1∶13 84.63 1∶17 93.37

图4

多钨酸盐与有机配体反应时间对罗丹明B光催化降解率的影响"

图5

棉织物和POMOF负载棉织物SEM照片"

表2

POMOF负载棉织物的相对元素含量"

元素 质量分数 原子分数
C 57.2 0.2
O 26.7 0.2
Cu 9.0 0.1
W 7.1 0.3
P 0.0 0.2

图6

棉织物、羧基改性棉织物与POMOF负载棉织物的红外光谱"

图7

光照时间对罗丹明B降解率的影响"

图8

光催化前后POMOF负载棉织物的扫描电镜照片"

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