Ag对TiO2@Ag/聚偏氟乙烯复合薄膜性能的影响 |
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引用本文: | 于翔,董献辉,桂久青,张雪寅,宋子豪,李玥. Ag对TiO2@Ag/聚偏氟乙烯复合薄膜性能的影响[J]. 复合材料学报, 2020, 37(7): 1555-1561. DOI: 10.13801/j.cnki.fhclxb.20191128.001 |
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作者姓名: | 于翔 董献辉 桂久青 张雪寅 宋子豪 李玥 |
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作者单位: | 河南工程学院 材料与化学工程学院,郑州 450007 |
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基金项目: | 国家自然科学基金青年基金(51608175);河南省科技厅科技攻关项目(182102310866) |
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摘 要: | 采用光化学沉积法和溶液刮膜法制备不同Ag含量的TiO2@Ag/聚偏氟乙烯(PVDF)复合薄膜,并采用电子万能材料试验机、紫外可见近红外分光光度计和XRD等对TiO2@Ag/PVDF复合薄膜的物理性能和光催化性能进行表征和分析。研究发现:与TiO2/PVDF复合薄膜相比,TiO2@Ag/PVDF复合薄膜的拉伸强度明显提高,但断裂伸长降低,且复合薄膜的响应光谱范围拓宽至可见光区;TiO2@Ag/PVDF复合薄膜的光催化降解能力随Ag负载量的增加而呈先升高后降低的趋势;同时TiO2@Ag/PVDF复合薄膜具有优异的重复利用性和可见光区自清洁作用。综上所述,实验所制备的TiO2@Ag/PVDF复合薄膜能够满足实际应用需要,因此其在光催化降解领域具有潜在的应用前景。
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关 键 词: | 聚偏氟乙烯(PVDF) TiO2@Ag 光催化 自清洁 复合薄膜 降解 |
收稿时间: | 2019-08-04 |
Effect of Ag on properties of TiO2@Ag/polyvinylidene fluoride composite membranes |
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Affiliation: | Department of Material and Chemical Engineering, Henan University of Engineering, Zhengzhou 450007, China |
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Abstract: | The TiO2@Ag/polyvinylidene fluoride(PVDF) composite membranes with different Ag contents were prepared by photochemical reduction deposition and solution scraping methods. The physical properties and photocatalytic properties of the TiO2@Ag/PVDF composite membranes were analyzed by electronic universal material testing machine, UV-visible near-infrared spectrophotometer, XRD and so on. The results show that compared with pure TiO2/PVDF composite membranes, the tensile strength of TiO2@Ag/PVDF composite membranes is obviously increased but the breaking elongation is decreased, and TiO2@Ag/PVDF composite membranes can promote the response spectral range of TiO2 to visible region. Furthermore, the photocatalytic degradation abilities of the TiO2@Ag/PVDF composite membranes increase at first and then decrease with the increase of loaded Ag. Moreover, the TiO2@Ag/PVDF composite membranes have excellent reusability and self-cleaning effect in visible right. Above all, the TiO2@Ag/PVDF composite membranes prepared by the experiment can satisfy the needs of practical applications. The TiO2@Ag/PVDF composite membranes loaded with Ag have a significant potential foreground in photocatalytic degradation field. |
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