CAJ | 학술논문

以简便价廉的方法制备出一种新型氟试剂修饰的SiO2-TiO2复合微纳米结构涂层。采用场发射扫描电子显微镜(FE-SEM)、X射线光电子能谱(XPS)和油接触角测试等方法对涂层进行了表征和测试。研究结果显示，该涂层具备良好的UV光驱动亲/疏油可逆转换特性，最初为疏油性(90°)，光照后变得相对亲油(24°)，黑暗放置后恢复疏油性，且经5次反复循环无明显衰减。与单纯纳米 TiO2涂层相比，复合涂层表面油浸润性的转变因微纳米结构的存在而显著强化，且随着Si O 2微球直径的增大，其亲/疏油效果得到增强。以上研究为亲/疏油可逆转换智能材料的设计提供了新的方法和借鉴。
이간편개렴적방법제비출일충신형불시제수식적SiO2-TiO2복합미납미결구도층。채용장발사소묘전자현미경(FE-SEM)、X사선광전자능보(XPS)화유접촉각측시등방법대도층진행료표정화측시。연구결과현시，해도층구비량호적UV광구동친/소유가역전환특성，최초위소유성(90°)，광조후변득상대친유(24°)，흑암방치후회복소유성，차경5차반복순배무명현쇠감。여단순납미 TiO2도층상비，복합도층표면유침윤성적전변인미납미결구적존재이현저강화，차수착Si O 2미구직경적증대，기친/소유효과득도증강。이상연구위친/소유가역전환지능재료적설계제공료신적방법화차감。
A new type of fluorine modified micro-nano SiO2-TiO2 composite coating has been prepared though a convenient and low-cost method.Field emission scanning electron microscopy (FE-SEM),X-ray photoelectron spectroscopy (XPS)and oil contact angle were used to characterize the composite coatings.The results con-firmed the composite coating with repeated and reversible oleophobic/philic conversion properties (90-24°), which responded to cycles of UV irradiation and dark storage.Such switch can be safety performed during five continuous cycles without apparent attenuation.Compared with the single-scale nanostucture,the hierarchical micro-nano structure was demonstrated to play a key role in the improvement of the oleophobic/philic variation. Under the test range,the bigger the SiO2 microsphere is,the larger variation is obtained.These findings offer a new method for the design of smart materials with switchable oil wettability.