|
|
- 2018
纳米TiO2/涤纶海岛丝针刺无纺布光催化复合材料的制备及性能
|
Abstract:
以德固赛P25纳米TiO2为光催化材料、去离子水为介质，分别以十二烷基硫酸钠（SDS）、十二烷基苯磺酸钠（DBS）、聚乙烯毗咯烷酮（PVP）、十六烷基三甲基溴化铵（CTAB）、聚丙烯酸钠（PAAS）为分散助剂，制得系列纳米TiO2光催化分散液。用纳米TiO2光催化分散液对涤纶海岛丝针刺无纺布（PFN-NWF）进行二浸二轧后整理，得到TiO2负载的PFN-NWF （TiO2/PFN-NWF）光催化复合材料。采用激光粒度仪、TEM、SEM、拉伸、透气等表征测试，通过静置、光催化降解辣椒油和甲醛溶液等方法评价。结果表明：分散助剂自身的酸碱属性及分子结构对纳米TiO2分散体系有重要影响，其中PAAS分散效果最佳；纳米TiO2在PFN-NWF上包覆均匀，负载率为4.79%，负载牢度高；自然光照射60 min，试样上2 mL油污达到完全自清洁效果；300 W氙灯照射2 h，TiO2/PFN-NWF光催化复合材料试样对甲醛的降解率达到95.98%，5次循环使用后，降解率为90.19%。 A series of nano TiO2 photocatalytic dispersed solutions were prepared by using deionized water as a medium, sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate (DBS), ployvinylpynolidone (PVP), cetyl trimethyl ammonium bromide (CTAB), polyacrylic acid sodium (PAAS) surfactant as the dispersant, respectively. The TiO2 dispersed solutions were used as a finishing agent for the polyester sea-island filament needle punched nonwoven (PFN-NWF) to prepare TiO2/PFN-NWF photocatalytic composites through the twice dip-padding technique. The morphology, structure and properties of TiO2 solutions and TiO2/PFN-NWF photocatalytic composites were investigated. The capsicol and formaldehyde solution was used as a model contaminant to evaluate the photocatalytic activity of the TiO2/PFN-NWF composites. The results indicate that the dispersion system of TiO2 significantly affected by acidity-basicity of solution and dispersant, and the dispersivity of TiO2 solution can be effectively improved by addition of PAAS. The TiO2 is well immobilized on the surface of PFN-NWF and has good load fastness, the load rate of TiO2/PFN-NWF composites could be achieved 4.79%. The TiO2/PFN-NWF composites also have excellent catalytic performance. The capsicol (2 mL) drops on the surface of TiO2/PFN-NWF composites can be completely degraded under natural light irradiation for 60 min. The degradation ratio of formaldehyde is 95.98% under xenon lamp (300 W) irradiation for 3 h, and this ratio is remained above 90.19% after five cycles. 浙江省自然科学基金（Y406310）；浙江省大学科技创新活动计划暨新苗人才计划（2016R445001）
| [1] | HOFFMANN M R, MARTIN S T, CHOI W, et al. Environmental applications of semiconductor photocatalysis[J]. Chemical Reviews, 1995, 95(1):69-96. |
| [2] | KOPARDE V N, CUMMINGS P T. Phase transformations during sintering of titania nanoparticles[J]. ACS Nano, 2008, 2(8):1620. |
| [3] | WU Y H, LONG M C, CAI W M. Novel synthesis and property of TiO2 nano film photocatalyst with mixed phases[J]. Journal of Chemical Engineering of Chinese Universities, 2010, 24(6):1005-1010. |
| [4] | RAJBONGSHI B M, RAMCHIARY A, SAMDARSHI S K. Investigation of visible light active Ag sensitized mixed phase TiO2 photocatalyst for solar energy application[J]. Journal of Sol-Gel Science and Technology, 2014, 72(1):114-121. |
| [5] | XU H Y, LIU W C, SHI J, et al. Photocatalytic discoloration of methyl orange by anatase/schorl composite:Optimization using response surface method[J]. Environmental Science & Pollution Research, 2014, 21(2):1582-1591. |
| [6] | 周琪, 钟永辉, 陈星, 等. 石墨烯/纳米TiO2复合材料的制备及其光催化性能[J]. 复合材料学报, 2014, 31(2):255-262. ZHOU Q, ZHONG Y H, CHEN X, et al. Preparation and photocatalytic activity of graphene/nano TiO2 composites[J]. Acta Materiae Compositae Sinica, 2014, 31(2):255-262(in Chinese). |
| [7] | WANG L, SIGMUND W, ALDINGER F. Systematic approach for dispersion of silicon nitride powder in organic media I:Surface chemistry of the powder[J]. Journal of the American Ceramic Society, 2010, 83(4):691-696. |
| [8] | 黄冬根, 莫壮洪, 全水清, 等. 石墨烯/纳米TiO2复合材料的制备及光催化还原性能[J]. 复合材料学报, 2016, 33(1):155-162. HUANG D G, MO Z H, QUANG S Q, et al. Preparation and photocatalytic reduction performance of graphene/nano TiO2 composites[J]. Acta Materiae Compositae Sinica, 2016, 33(1):155-162(in Chinese). |
| [9] | BICKLEY R I, GONZALEZ-CARRENO T, LEES J S, et al. A structural investigation of titanium dioxide photocatalysts[J]. Journal of Solid State Chemistry, 1991, 92(1):178-190. |
| [10] | 唐楷, 王勇明, 王美玲, 等. 水溶液中纳米二氧化钛分散技术研究进展[J]. 涂料技术与文摘, 2011, 32(2):31-38. TANG K, WANG Y M, WANG M L, et al. Research process in nano-TiO2 dispersion technology in water solution[J]. Coatings Technology & Abstracts, 2011, 32(2):31-38(in Chinese). |
| [11] | 程冰, 王秀峰, 伍媛婷. 金红石型纳米TiO2粉体的制备及其分散[J]. 电子元件与材料, 2005, 24(5):1-4. CHENG B, WANG X F, WU Y T. Preparation of rutile titanium dioxide nano-particles in aqueous solution and its dispersion[J]. Electronic Components & Materials, 2005, 24(5):1-4(in Chinese). |
| [12] | 蒋鑫, 林仕伟, 张苹, 等. 二氧化钛表面改性及其布膜光催化性能的研究[J]. 人工晶体学报, 2017, 46(4):668-674. JIANG X, LIN S W, ZHANG P, et al. Surface modification of titanium dioxide and photocatalytic activity of its coating film[J]. Journal of Synthetic Crystals, 2017, 46(4):668-674(in Chinese). |
| [13] | 王勇, 张昊, 张军, 等. 纳米TiO2/再生纤维素复合薄膜的制备及光催化性能[J]. 复合材料学报, 2007, 24(3):35-39. WANG Y, ZHANG H, ZHANG J, et al. Preparation and photocatalytic activity of nano-TiO2/regenerated cellulose composite films[J]. Acta Materiae Compositae Sinica, 2007, 24(3):35-39(in Chinese). |
| [14] | ZHU Y F, FU Y Q, NI Q Q. Preparation and performance of photocatalytic TiO2 immobilized on palladium-doped carbon fibers[J]. Applied Surface Science, 2011, 257(6):2275-2280. |
| [15] | WINDLER L, LORENZ C, GOETZ N V, et al. Release of titanium dioxide from textiles during washing[J]. Environmental Science & Technology, 2012, 46(15):8181-8188. |
| [16] | RIVERO P J, URRUTIA A, GOICOECHEA J, et al. Nanomaterials for functional textiles and fibers[J]. Nanoscale Research Letters, 2015, 10(1):501. |
| [17] | ZHOU Y, LI M, ZHONG X, et al. Hydrophobic composite coatings with photocatalytic self-cleaning properties by micro/nanoparticles mixed with fluorocarbon resin[J]. Ceramics International, 2015, 41(4):5341-5347. |
| [18] | 国家质量技术监督局. 纺织品试验用家庭洗涤和干燥程序:GB/T 8629-2001[S]. 北京:中国标准出版社, 2001. State Administration for Quality and Technology Supervision. Textiles:Domestic washing and drying procedures for textile testing:GB/T 8629-2001[S]. Beijing:China Standards Press, 2001(in Chinese). |
| [19] | 纺织工业部标准化研究所. 非织造布断裂强力和断裂伸长率的测定:FZ/T 60005-1991[S]. 北京:中国标准出版社, 1991. Institute of Textile Industry Standardization. The determination of fracture strength and elongation rate of nonwoven fabric:FZ/T 60005-1991[S]. Beijing:China Standards Press, 1991(in Chinese). |
| [20] | 国家质量技术监督局. 纺织品织物透气性的测定:GB/T 5453-1997[S]. 北京:中国标准出版社, 1997. State Administration for Quality and Technology Super-vision. Textiles:Determination of the permeability of fabrics to air:GB/T 5453-1997[S]. Beijing:China Standards Press, 1997(in Chinese). |
| [21] | 中国国家标准化管理委员会. 国家纺织产品基本安全技术规范:GB 18401-2010[S]. 北京:中国标准出版社, 2010. Standardization Administration of the People's Republic of China. National general safety technical code for textile pro-ducts:GB 18401-2010[S]. Beijing:China Standards Press, 2010(in Chinese). |
| [22] | 胡海霞, 李建华. 光催化自清洁整理剂制备及在涤棉织物上的应用[J]. 丝绸, 2014, 51(6):30-36. HU H X, LI J H. Preparation of photocatalysis self-cleaning finishing agent and its application inpolyester-cotton fabrics[J]. Journal of Silk, 2014, 51(6):30-36(in Chinese). |
