A thermo-responsive polymer-tethered and Pd NP loaded UiO-66 NMOF for biphasic CB dechlorination
| Autor: | Bing-Jian Yao, Yu-Bin Dong, Qi-Juan Fu, Ai-Xiang Li, Xiao-Man Zhang, Yan-An Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Sulfide 010405 organic chemistry Composite number Nanoparticle 010402 general chemistry 01 natural sciences Pollution Toluene Pickering emulsion 0104 chemical sciences Catalysis chemistry.chemical_compound Chemical engineering chemistry Chlorobenzene Emulsion Environmental Chemistry |
| Zdroj: | Green Chemistry. 21:1625-1634 |
| ISSN: | 1463-9270 1463-9262 |
| Popis: | Herein, we report a poly(N-isopropylacrylamide) sulfide (PNIPAM-S-) brush-tethered and Pd nanoparticle (NP) loaded UiO-66 type NMOF, namely Pd@UiO-66-S-PNIPAM, based on a NMOF–polymer covalent composite approach. The obtained multifunctional composite material can be a highly efficient Pickering emulsifier to stabilize the toluene-in-water emulsion; furthermore, it promotes the biphasic chlorobenzene (CB) dechlorination at the toluene–water interface in excellent yields at room temperature. More importantly, the Pd@UiO-66-S-PNIPAM emulsifier is thermo-responsive and can trigger emulsification at room temperature (25 °C) and demulsification at an elevated temperature (45 °C) of the toluene droplets, which makes product–catalyst in situ separation and recycling feasible. This temperature switchable Pickering emulsion catalytic system can be reused at least five times without any loss of its catalytic activity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|