Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (09): 35-41.doi: 10.13475/j.fzxb.20180805207

• Fiber Materials • Previous Articles     Next Articles

Preparation of controllable ZnO nanoparticles on surface of nonwovens

ZHOU Ying1, WANG Chuang1, ZHU Jiaying1, HUANG Linxi1, YANG Lili1, YU Houyong1, YAO Juming1(), JIN Wanhui2   

  1. 1. Silk Institute, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    2. Hubei Province Fiber Inspection Bureau, Wuhan, Hubei 430000, China
  • Received:2018-08-23 Revised:2019-05-31 Online:2019-09-15 Published:2019-09-23
  • Contact: YAO Juming E-mail:yaoj@zstu.edu.cn

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Abstract:

In order to prepare ZnO composite photocatalytic material with good dispersibility, a one-step method was adopte to mix polypropylene spunbonded nonwoven fabric (PPEN) and zinc ammonium solution, influences ZnO nanoparticles with different morphologies and photocatalytic properties were loaded by direct precipitation. The influences of reaction temperature on the morphology, dispersibility, crystallization, thermal stability and photocatalytic properties of ZnO particles on the surface of the fibers were investigated by scanning electron microscopy, X-ray diffractometer (XRD), thermogravimetric analyzer and UV-visible diffuse reflectance spectroscopy. The results show that rod-shaped ZnO microparticles are uniformly coated on the surface of the nonwoven fabric after treatment at 75 ℃, and the PPFN/ZnO composites obtained at 75 ℃ have sharper peaks on the XRD chart than those obtained at 60 ℃ and 90 ℃, whose crystallinity is 88.0%. Furthermore, its maximum degradation temperature increases from 287.2 ℃ to 392.9 ℃, with an increase of 105.7 ℃, and the PPFN/ZnO composites obtained at 75 ℃ has a degradation ratio of 96.04% after photocatalytic degradation of methylene blue dye for 8 h.

Key words: ZnO, polypropylene spunbond nonwoven, morphological regulation, photocatalytic performance

CLC Number: 

  • TS176

Fig.1

SEM images of PPFN and PPFN/ZnO composites obtained at different treatment temperatures"

Tab.1

Length, diameter and aspect ratio of surface-loaded zinc oxide"

样品 ZnO形貌 平均长度/nm 平均直径/nm
PPFN — — (18.8±0.9)×1 000
PPFN60 不规则颗粒状 — 373
PPFN75 棒状,均一 1 320 175
PPFN90 棒状,不均一 1 650 278

Fig.2

Element analysis of PPFN and PPFN/ZnO composites"

Fig.3

Schematic diagram of formation mechanism of ZnO nanoparticles on surface of nonwoven fabric"

Fig.4

X-ray diffraction spectra of PPFN/ZnO composites"

Tab.2

Average crystallinity and grain size of ZnO in PPFN/ZnO composites"

样品 结晶度/
%		 晶粒尺寸/nm
(100) (101) (110) (112)
PPFN60 50.2 5.1 4.2 4.9 3.9
PPFN75 88.0 5.9 5.0 5.6 4.5
PPFN90 76.9 5.4 4.6 5.1 4.4

Fig.5

TGA (a) and DTG (b) curves of PPFN and PPFN/ZnO composites"

Tab.3

Thermal weight loss data of PPFN and PPFN/ZnO composites"

样品 T0/℃ Tmax/℃ 残余质量/%
PPFN 224.8 287.2 0.1
PPFN60 225.2 388.4 8.5
PPFN75 226.9 392.9 15.7
PPFN90 226.1 391.7 12.1

Fig.6

UV Analysis of PPFN and PPFN/ZnO composites. (a) Solid UV-visible diffuse reflectance spectroscopy;(b) Plots of (αhν)2 vs. (hν) of samples"

Fig.7

Photocatalytic degradation of methylene blue dyes by PPFN and PPFN/ZnO composites. (a)PPFN;(b)PPFN60; (c)PPFN75; (d)PPFN90; (e) Standard curve of MB; (f) Influence of illumination time on MB degradation rate"

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