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首页> 外文会议>International Conference on Sensing Technology >Visible light photocatalytic activity of TiO2/MWCNTs nanocomposite prepared using modified microwave technique
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Visible light photocatalytic activity of TiO2/MWCNTs nanocomposite prepared using modified microwave technique

机译：改进微波技术制备的TiO2 / MWCNTs纳米复合材料的可见光催化活性

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A facile method for in-situ dressing of multi-walled carbon nanotubes (MWNTs) with TiO2 nanoparticles was achieved using modified microwave technique. TiO2/MWCNT nanocatalyst was formed using titanium (IV) isopropoxide as the precursor in the presence of MWCNTs and constantly irradiated for 5 min. FE-SEM micrographs suggested that TiO2 nanoparticles were well attached on the outer sidewall of MWCNTs. XRD measurement revealed that the TiO2 exist in anatase form with the calculated crystallite size of approximately 5 nm. XPS results show that TiO2 contacts closely with MWCNTs via Ti-O-C bonds. The photocatalytic activity of the nanocomposite was evaluated based the degradation of methylene blue under visible light irradiation. The results showed that 1 mg of TiO2/MWCNTs hybrid nanocatalyst efficiently degraded the dye.
机译：利用改进的微波技术，实现了一种以TiO 2 纳米粒子原位修饰多壁碳纳米管的简便方法。 TiO 2 / MWCNT纳米催化剂是在MWCNTs存在下，以异丙醇钛（IV）为前驱体形成的，并持续照射5 min。 FE-SEM显微照片表明TiO 2 纳米颗粒附着在MWCNTs的外侧壁上。 XRD测量表明TiO 2 以锐钛矿形式存在，计算出的微晶尺寸约为5nm。 XPS结果表明，TiO 2 通过Ti-O-C键与MWCNT紧密接触。基于亚甲基蓝在可见光照射下的降解来评估纳米复合材料的光催化活性。结果表明，1 mg TiO 2 / MWCNTs杂化纳米催化剂可有效降解染料。

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