Study of application and influential factors of photocatalysis mesoporous adsorbent synthesized via dual-template for VOCs removal

• Main Authors: Yi-Chi Chou, 周鐿佶
• Other Authors: Yu-Chih Lin
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/3ewe9h

碩士 === 元培科技大學 === 環境工程衛生研究所 === 102 === In this research, tri-block copolymer interfacial agent P123 is used together with interfacial agent to prepare mesoporous adsorbing material that has structure similar to SBA-15, and then photo-catalyst is coated on the surface. The result shows that when P123 is used together with F68 in the synthesis with weight ratio of 3:1, the synthesized mesoporous adsorbing material will have the best performance in adsorbing acetone. From TEM and XRD material analysis result, it is clear that the material channel distribution is typical two dimensional hexagonal structure. Therefore, when double interfacial agent is used to synthesize mesoporous material, in addition to enhancing effectively the specific area and the adsorption capability, it can also enhance the channel structural form; Next, the SBA-15 surface is coated with Ti, TiO2 /SBA-15, and the acetone processing result shows that it can take care both the adsorption amount and photo-catalysis de-staining effect. The optimal coating amount of Ti on SBA-15 is 30wt%TiO2, and when it processes 50 and 500ppm without light illumination, the saturation adsorption breakthrough time are 140 and 45 minutes, respectively. Moreover, the efficiencies for decomposition of acetone through photo-catalysis of acetone are 90 and 61%, respectively; hence, it is clear that synthesized TiO2/SBA-15 has very good pollutant removal efficiency no matter in the treatment of indoor or flue gas exhaust or volatile organic waste gas of all kinds of concentration ranges.