Mallakpour Shadpour, Behranvand Vajiheh, Mallakpour Fereshteh
Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran; Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran.
Carbohydr Polym. 2019 Nov 15;224:115138. doi: 10.1016/j.carbpol.2019.115138. Epub 2019 Jul 30.
Fewer toxic and cost-effective catalysts such as organic-inorganic polymer composites are highly necessary for the water purification. This work describes the sono-assisted fabrication of photocatalyst including multi-walled carbon nanotubes (CNTs), carbon dots (Cdots), magnesium fluorohydroxyapatite (FA), and TiO nanoparticles (NPs) (CNT/Cdot/FA/TiO) for methylene blue (MB) degradation in the water solution. This hybrid was employed for the reinforcement of crosslinked alginate (CAlg) and fabrication of CAlg/CNT/Cdot/FA/TiO composite. The photocatalytic behavior of this composite was examined for the MB degradation. To examine TiO NPs effect on the as- products, the mentioned samples were prepared without TiO, as well. Photodegradation yields of the samples followed in the order of CNT/CD/FA/TiO > TiO NPs > CAlg/CNT/Cdot/FA/TiO composite > pure FA. The outcomes indicated that the TiO hybridization not only could postpone the recombination of photo-created electron-hole pairs but also prevented aggregation of TiO NPs, which led to enhancement in the photodegradation yield of MB.
对于水净化而言，非常需要更少毒性且具有成本效益的催化剂，例如有机 - 无机聚合物复合材料。这项工作描述了声辅助制备光催化剂的过程，该光催化剂包括多壁碳纳米管（CNT）、碳点（Cdot）、氟羟基磷灰石镁（FA）和二氧化钛纳米颗粒（NPs）（CNT/Cdot/FA/TiO），用于水溶液中亚甲基蓝（MB）的降解。这种杂化物用于增强交联藻酸盐（CAlg）并制备CAlg/CNT/Cdot/FA/TiO复合材料。研究了该复合材料对MB降解的光催化行为。为了研究TiO NPs对产物的影响，还制备了不含TiO的上述样品。样品的光降解产率顺序为：CNT/CD/FA/TiO＞TiO NPs＞CAlg/CNT/Cdot/FA/TiO复合材料＞纯FA。结果表明，TiO杂化不仅可以延缓光生电子 - 空穴对的复合，还可以防止TiO NPs的聚集，这导致MB的光降解产率提高。
