Abstract
The ultrafine and highly dispersed bimetallic Pt-Pd nanoparticles are successfully anchored on mesoporous silica nanoparticles (MSN). The [email protected] catalyst exhibits excellent catalytic performance in the hydrogen from ammonia borane (AB). When the [email protected] nanoparticles were grafted with luminescent material and smart thermo-responsive polymer, a smart catalyst could be fabricated. The smart catalyst exhibits the thermo-responsive catalytic performance and switchable luminescence. For example, the composite catalyst displays high catalytic activity in hydrolysis of AB at 25 °C. However, it shows much lower catalytic activity when the temperature increases to 35 °C. The smart catalysts could be potentially applied in the self-protection device of dehydrogenation. When the system of dehydrogenation is under high temperature environment, the smart composite catalyst could automatically restrain the production of H2 for the purpose of safety.
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