涤纶表面Se@TiO<sub>2</sub>纳米结构构筑及其光催化和抗菌性能

赵紫瑶; 栾睿; 莫慧琳; 聂昊; 任煜; 李美贤

涤纶表面Se@TiO₂纳米结构构筑及其光催化和抗菌性能

南通大学　纺织服装学院, 江苏, 南通 226019

基金项目: 江苏省自然科学基金(BK20220613), 南通市科技项目(JC12022080)

详细信息

通讯作者:
任煜，博士，教授，硕士生导师，研究方向为纤维材料的功能化改性　E-mail: ren.y@ntu.edu.cn

中图分类号: TB333
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- 文章访问数: 69
- HTML全文浏览量: 44
- 被引次数: 0
出版历程
- 收稿日期: 2023-12-08
- 修回日期: 2024-01-03
- 录用日期: 2024-01-05
- 网络出版日期: 2024-01-29

Construction of Se@TiO₂ nanostructures on polyester surface and investigation of the photocatalytic and antibacterial properties

School of Textile and Cloth, Nantong University, Jiangsu, Nantong 226019, China

Funds: Jiangsu Natural Science Foundation Youth Fund (BK20220613), Nantong Science and Technology Project (JC12022080)

摘要

摘要: 采用等离子体技术对涤纶织物进行表面预处理，在涤纶织物表面负载纳米TiO₂，然后通过分子组装法在TiO₂/聚对苯二甲酸乙二醇酯(PET)表面生长Se纳米球(SeNPs)和Se纳米线(SeNWs)，在涤纶织物表面构筑Se@TiO₂二元复合结构(SeNPs@TiO₂/PET和SeNWs@TiO₂/PET)。通过扫描电镜(SEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)、紫外-可见吸收光谱(UV-vis)、光致发光光谱(PL)及光催化和抗菌实验对材料的晶体结构、表面形态、化学组成、光催化性能及抗菌性能等进行表征。通过接触角测试对复合光催化材料的表面润湿性能进行表征。光催化降解实验表明SeNWs@TiO₂/PET在模拟太阳光下具有更高的降解率，其对模型污染物亚甲基蓝降解90 min后，降解率达到98.3%。PL光谱表明SeNWs@TiO₂/PET电子-空穴对的分离率高于SeNPs@TiO₂/PET。UV-vis光谱表明SeNPs@TiO₂/PET和SeNWs@TiO₂/PET的相对禁带宽度分别为2.8 eV和2.7 eV。两种复合材料对金黄色葡萄球菌和大肠杆菌的抑菌率分别可达到99%和90%以上。
- TiO₂ /
- Se /
- 光催化 /
- 抗菌 /
- PET /
- 涤纶织物
Abstract: Surface pretreatment of polyester fabric was carried out using plasma technology. Nano-TiO₂ was loaded on the surface of the polyester fabric, and then Se nanospheres (SeNPs) and Se nanowires (SeNWs) were grown on the surface of the TiO₂/ Polyethylene terephthalate (PET) through molecular assembly method. Se@TiO₂ binary composite structure was constructed on the surface of the PET(SeNPs@TiO₂/PET and SeNWs@TiO₂/PET). The crystal structure, surface morphology, chemical composition, photocatalytic and antibacterial properties of the material were characterized by SEM, XRD, XPS, UV vis, PL, and photocatalytic and antibacterial experiments. Characterize the wetting performance of composite photocatalytic materials through contact angle testing. The results indicate that SeNPs@TiO₂/PET and SeNWs@TiO₂/PET composite photocatalytic materials have been successfully prepared. The photocatalytic degradation experiment shows that SeNWs@TiO₂/PET has a higher degradation rate under sunlight simulation. After 90 minutes of degradation of the model pollutant methylene blue, the degradation rate reached 98.3%. PL spectrum indicates SeNWs@TiO₂/PET separation rate of electron hole pairs is higher than SeNPs@TiO₂/PET. The UV-vis spectrum indicates that relative bandgap widths of SeNPs@TiO₂/PET and SeNWs@TiO₂/PET are 2.8 eV and 2.7 eV, respectively. The antibacterial rates of composite materials against S.aureus and E.coli can reach over 99% and 90%, respectively.
- TiO₂ /
- Se /
- photocatalysis /
- antibacterial /
- PET /
- polyester fabric

HTML全文

图 1 材料扫描电镜图片

(a)Se纳米球(SeNPs)@TiO₂/聚对苯二甲酸乙二醇酯(PET); (b) Se纳米线(SeNWs)@TiO₂/PET; (c)SeNPs; (d)SeNWs

Figure 1. Scanning electron microscopy images of materials

(a) Se nanospheres (SeNPs)@TiO₂/ Polyethylene terephthalate (PET); (b) Se nanowires (SeNWs)@TiO₂/PET; (c)SeNPs; (d)SeNWs

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图 2 材料表面各元素分布图

Figure 2. Distribution map of various elements on the material surface

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图 3 PET、SeNPs@TiO₂/PET和SeNWs@TiO₂/PET的X 射线衍射图

Figure 3. X-ray diffraction patterns of PET、SeNPs@TiO₂/PET and SeNWs@TiO₂/PET

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图 4 Se@TiO₂/PET的XPS图

Figure 4. XPS image of Se@TiO₂/PET (a) Se@TiO₂/PET wide spectrum; (b) C1 s spectrum (c) Ti2 P spectrum; (d) O1 s spectrum ; (e) Se3 d spectrum

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图 5 PET、SeNPs@TiO₂/PET和SeNWs@TiO₂/PET的光致发光光谱图

Figure 5. Photoluminescence spectra of PET、SeNPs@TiO₂/PET and SeNWs@TiO₂/PET

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图 6 PET、SeNPs@TiO₂/PET和SeNWs@TiO₂/PET的紫外-可见吸收光谱

Figure 6. UV-Vis absorption spectra of PET、 SeNPs@TiO₂/PET and SeNWs@TiO₂/PET

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图 7 PET、SeNPs@TiO₂/PET和SeNWs@TiO₂/PET的接触角图

Figure 7. Contact angle diagrams of PET、SeNPs@TiO₂/PET and SeNWs@TiO₂/PET

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图 8 模拟太阳光下SeNPs@TiO₂/PET和SeNWs@TiO₂/PET对亚甲基蓝的降解曲线

Figure 8. Simulated degradation curves of methylene blue by SeNPs@TiO₂/PET and SeNWs@TiO₂/PET under visible light

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图 9 模拟太阳光下SeNPs@TiO₂/PET和SeNWs@TiO₂/PET对亚甲基蓝的重复降解率

Figure 9. Simulates the repeated degradation rate of methylene blue by SeNPs@TiO₂/PET and SeNWs@TiO₂/PET under visible light

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图 10 SeNPs@TiO₂/PET和SeNWs@TiO₂/PET对大肠杆菌和金黄色葡萄球菌的抑菌图

Figure 10. Antibacterial activity of SeNPs@TiO₂/PET and SeNWs@TiO₂/PET against E.coli and S.aureus

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表 1 材料表面各元素的相对含量

Table 1. Relative content of elements on the surface of materials

Sample	Relative content of element/ wt%
Sample	C	O	Ti	Se
PET	67.79	32.21	-	-
SeNPs@TiO₂/PET	60.83	37.47	0.69	1.01
SeNWs@TiO₂/PET	61.44	34.82	2.83	0.91

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表 2 材料的接触角及吸水时间

Table 2. Contact angle and water absorption time of materials

Sample	Contact angle	Water absorption time
PET	126.4°	n/a
SeNPs@TiO₂/PET	0°	>1 s
SeNWs@TiO₂/PET	0°	>1 s

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表 3 SeNPs@TiO₂/PET和SeNWs@TiO₂/PET对大肠杆菌和金黄色葡萄球菌的抑菌率

Table 3. Antibacterial rates of SeNPs@TiO₂/PET and SeNWs@TiO₂/PET against E.coli and S.aureus

Sample	E. coli colony/ (CFU·mL⁻¹)	Bacteriostatic rate	S. aureus colony/(CFU·mL⁻¹)	Bacteriostatic rate
Blank	1.73×10⁶	n/a	0.95×10⁶	n/a
TiO₂/PET	7.06×10⁵	59.19%	0.84×10⁵	91.16%
SeNPs@TiO₂/PET	1.38×10⁵	92.03%	1	99.99%
SeNWs@TiO₂/PET	0.92×10⁵	94.68%	1	99.99%

下载: 导出CSV

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