CAJ | 학술논문

本文介绍一种简单可行的模板法用于制备单分散二氧化钛空心微球（ HTS），采用聚苯乙烯（ PSA）为模板球，在乙醇溶剂中钛酸四丁酯（ TBOT）经水蒸汽催化水解形成二氧化钛/PSA复合微球，然后经高温煅烧得到HTS。经SEM分析，HTS具有优异的单分散性和表面形貌；经XRD分析，在500℃煅烧而成的HTS呈锐钛矿型；同时深入分析了TBOT掺量和反应时间关键因素的影响；HTS粒径大小可以通过调节PSA模板球粒径大小实现。此方法还可用于制备二氧化锆空心微球及其它无机空心微球。
본문개소일충간단가행적모판법용우제비단분산이양화태공심미구（ HTS），채용취분을희（ PSA）위모판구，재을순용제중태산사정지（ TBOT）경수증기최화수해형성이양화태/PSA복합미구，연후경고온단소득도HTS。경SEM분석，HTS구유우이적단분산성화표면형모；경XRD분석，재500℃단소이성적HTS정예태광형；동시심입분석료TBOT참량화반응시간관건인소적영향；HTS립경대소가이통과조절PSA모판구립경대소실현。차방법환가용우제비이양화고공심미구급기타무궤공심미구。
Hollow titania sphere ( HTS ) was well-known for high porosity, photovoltaic and photocatalytic properties, and its applications as catalyst. In this study, a simple and easily scalable approach was offered for producing well-defined size tunable HTS by means of modified sol-gel condensation method in ethanol solvent. In this process, the water vapor promoted the hydrolysis of TBOT to form titania coating spheres, which was very simple and achievable. It had a narrow particle size distribution and commendable surface morphology through SEM. The calcined HTS at 500 ℃ displayed crystalline reflection peaks that were characteristic to the anatase phase by XRD. Some effects of TBOT dosage and reaction time were studied in-depth analysis. This method can also be used for the preparation of zirconia hollow microspheres and other inorganic hollow microspheres.