In this paper, a luminescent and thermo-responsive catalyst based on SiO₂@[email protected]@PNIPAM was prepared by incorporating Pt nanoparticles, luminescent material and mesoporous silica with thermo-responsive polymer. The obtained catalyst was characterized by IR, TGA, UV-vis, SEM, TEM, X-ray photoelectron spectroscopy and luminescence. The hybrid catalyst exhibits “on-off” green luminescence in solution under UV irradiation, which could be observed by eyes. The catalytic results indicate that the dehydrogenation of ammonia borane (AB) catalyzed by SiO₂@[email protected]@PNIPAM is thermo-controllable and switchable. The SiO₂@[email protected]@PNIPAM shows high catalytic activity for the generation of hydrogen at room temperature. However, it exhibits much lower catalytic activity at high temperature. The catalysts exhibit excellent durability because the support and polymer could prevent the aggregation and leaching of Pt nanoparticles during catalysis. The catalytic research offers a new approach to the thermo-controllable application in the generation of hydrogen from AB.

本文通过将Pt纳米粒子，发光材料和介孔二氧化硅与热敏性聚合物结合，制备了一种基于SiO ₂ @ [email protected] @PNIPAM的发光和热敏催化剂。通过IR，TGA，UV-vis，SEM，TEM，X射线光电子能谱和发光对催化剂进行表征。杂化催化剂在紫外线照射下在溶液中显示“开-关”绿色发光，这可以用肉眼观察到。催化结果表明，SiO ₂ @ [email protected] @PNIPAM催化的氨硼烷（AB）脱氢是可热控制和可切换的。SiO ₂@ [受电子邮件保护] @PNIPAM在室温下显示出高催化活性以产生氢。但是，它在高温下表现出低得多的催化活性。催化剂表现出优异的耐久性，因为载体和聚合物可防止在催化过程中Pt纳米颗粒的聚集和浸出。催化研究为从AB生成氢的热控应用提供了一种新方法。