【摘要】 利用改良式真空潜弧制造系统制备纳米二氧化钛悬浮液,改良重点为原有真空潜弧制造系统的压力控制系统、冷却液循环系统、参数控制系统、机台尺寸等部件,获得了可制备出较稳定、颗粒较小的二氧化钛纳米悬浮颗粒的制备条件及颗粒尺寸再现性良好的实验平台.所制备纳米二氧化钛颗粒为锐钛矿(Anatase)结构,在光催化性能实验方面,纳米二氧化钛在光波长360～380nm时具有良好吸收能力.在吸附实验中,所制备的二氧化钛颗粒的吸附效果优于商用的二氧化钛及氧化锌纳米颗粒.在亚甲基蓝的脱色实验中,所制备的二氧化钛颗粒能在60min内达到脱色率100%.更多还原

【Abstract】 In this study,the improved submerged arc nanofluid synthesis system(SANSS) was used to fabricate TiO2 nanofluid.The improvement mainly focuses upon the pressure control system,coolant circulation system,parameter control system and the machine dimensions of the original submerged arc nanofluid synthesis system,so as to acquire an experimental machine having a fabrication condition to produce more stable and finer TiO2 nano suspension particles with good reproducibility in particle size.The fabricated TiO2 particles carry a structure of anatase.In the aspect of photocatalytic performance,nano TiO2 carries a good absorbency at the wavelength between 360～380 nm.Besides,in the adsorption experiment,it is found that the adsorption performance of the TiO2 particles fabricated herein is better than those commercial use TiO2 and zinc oxide nanoparticles.In the depigmentation of methylene blue experiment,the fabricated TiO2 particles by this processing method can perform 100% depigmentation within 60 min.更多还原