| 摘要: |
| 【目的】基于空气介质阻挡放电（DBD）冷等离子体技术制备纳米二氧化钛（TiO2）/竹材复合材料，为扩大竹材的使用范围提供参考。【方法】采用DBD冷等离子体处理竹皮表面，并浸泡在带有负电荷的不同含量（0.5%和1%，质量分数，下同）纳米TiO2溶液中，沉积一定时间（5，10 min）后取出，用蒸馏水冲洗掉表面游离的TiO2，然后在103 ℃干燥箱中烘干至与空气含水率平衡，将烘干后的竹皮再次经DBD冷等离子体处理，并浸泡TiO2溶液，再次干燥，如此循环，分别制备沉积1，3，5次样品，研究TiO2溶液含量、沉积次数、沉积时间对纳米TiO2/竹材复合材料表面TiO2负载量的影响。【结果】竹皮表面沉积TiO2纳米材料的负载量与TiO2溶液含量、沉积次数、沉积时间有关。采用空气DBD冷等离子体处理竹皮表面后，在1% TiO2溶液中沉积5次，每次5 min，效果较好，TiO2纳米材料负载量可达4.11 g/m2。【结论】成功制备了纳米TiO2/竹材复合材料，竹皮表面可以负载较多的TiO2纳米材料。 |
| 关键词: DBD冷等离子体 竹材 纳米二氧化钛 复合材料 |
| DOI： |
| 分类号: |
| 基金项目:浙江省公益技术农业项目（2015C32087） |
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| Preparation of nano-TiO2/bamboo composites based on air dielectric barrier discharge cold plasma |
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WANG Hongyan,LI Qin,YUAN Shaofei,et al
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| Abstract: |
| 【Objective】This study prepared the nano-TiO2/bamboo composite materials based on air dielectric barrier discharge (DBD) cold plasma to provide basis for wide application of bamboo materials.【Method】Bamboo veneer was treated by air DBD cold plasma before it was immersed in nano-TiO2 solutions at different mass concentrations (0.5% and 1%) with negative charge.After 5 or 10 minutes bamboo veneer was taken out and rinsed with distilled water to remove surface free nano-TiO2 before it was dried under 103 ℃ to be in equilibrium moisture content in the air.The process was repeated by 1,3 and 5 times to prepare different materials.The effects of TiO2 solution content,deposition frequency and deposition duration on surface TiO2 load of nanometer TiO2/bamboo composites were also studied.【Result】 The nano-TiO2 loading capacity on the surface of bamboo veneer was related to the concentration,deposition frequency and deposition duration.The bamboo veneer showed the highest loading capacity of 4.11 g/m2 when it was soaked in 1% concentration TiO2 solution for five times at 5 minutes each time.【Conclusion】The surface of bamboo veneer can be loaded with more TiO2 nano-material after treated by air DBD cold plasma. |
| Key words: DBD cold plasma bamboo nano-TiO2 composite materials |
