TiO2纳米颗粒胶体活化系统设计及流场仿真分析

兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (3): 75-80.

TiO₂纳米颗粒胶体活化系统设计及流场仿真分析

宋孝宗, 姚统, 徐国敏

兰州理工大学机电工程学院, 甘肃兰州 730050

收稿日期:2018-09-13 出版日期:2020-06-28 发布日期:2020-08-19
作者简介:宋孝宗(1981-),男,甘肃会宁人,博士,副教授.
基金资助:
国家自然科学基金(51565031),甘肃省自然科学基金(2017GS10864)

Design of TiO₂ nanoparticle colloid activation system and its flow field simulation analysis

SONG Xiao-zong, YAO Tong, XU Guo-min

School of Mechano-Electronic Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2018-09-13 Online:2020-06-28 Published:2020-08-19

摘要/Abstract

摘要： 紫外光(UV)诱导纳米颗粒胶体射流加工可实现硬脆晶体材料亚纳米级超光滑表面的加工,根据其材料去除原理可知,伴随抛光过程的进行,胶体中TiO₂纳米颗粒表面会吸附一层工件表面的被去除原子,从而影响TiO₂纳米颗粒胶体的活性和光催化性.为了实现TiO₂纳米颗粒胶体的循环使用,基于O₃/UV高级氧化法对使用后的TiO₂纳米颗粒胶体再活化机理进行了研究,同时结合紫外光诱导纳米颗粒胶体射流加工系统设计了TiO₂纳米颗粒胶体活化系统,对系统内的再活化反应室结构进行了流体动力学仿真,仿真结果表明其结构设计满足TiO₂纳米颗粒胶体的活化要求.

关键词: TiO₂纳米颗粒, 胶体, 高级氧化法(AOPs), 活化, 流体动力学仿真

Abstract: Ultraviolet (UV)-induced nanoparticle colloidal jet processing can realize the processing of sub-nanometer ultra-smooth surface of hard and brittle crystal materials. It can be known according to the material removal principle that along with the polishing process, the surface of TiO₂ nanoparticles in the colloid would absorb a layer of removed atoms of the workpiece, so that the activity and photocatalytic properties of the TiO₂ nanoparticle colloid would be affected. In order to achieve the recycling of TiO₂ nanoparticle colloids, the O₃/UV advanced oxidation process(AOPs) was based to study the reactivation mechanism of the TiO₂ nanoparticles colloids and meantime, the TiO₂ nanoparticle colloidal activation system was designed as incorporated with the UV-induced nanoparticle colloidal jet processing system. Finally, the structure of reactivation reaction chamber in the system was fluid-dynamically simulated. The simulation result showed that the structural design would meet the activation requirements of TiO₂ nanoparticle colloid.

Key words: TiO₂ nanoparticles, colloid, advanced oxidation process(AOPs), activation, fluid dynamics simulation

中图分类号:

TQ051.1

宋孝宗, 姚统, 徐国敏. TiO₂纳米颗粒胶体活化系统设计及流场仿真分析[J]. 兰州理工大学学报, 2020, 46(3): 75-80.

SONG Xiao-zong, YAO Tong, XU Guo-min. Design of TiO₂ nanoparticle colloid activation system and its flow field simulation analysis[J]. Journal of Lanzhou University of Technology, 2020, 46(3): 75-80.

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TiO₂纳米颗粒胶体活化系统设计及流场仿真分析

Design of TiO₂ nanoparticle colloid activation system and its flow field simulation analysis

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