화학공학소재연구정보센터
Reactive & Functional Polymers, Vol.102, 93-100, 2016
A nitrogen-rich mesoporous polymer for photocatalytic hydrogen evolution from water
Nitrogen-rich hierarchical mesoporous polymers with photocatalytic activity for H-2 evolution from water were prepared, which was based on aminal bonds constructed by catalyst-free Schiff-base condensation. The effects of the reaction time, concentration of terephthaldehyde and the mole ratio of aldehyde to amine groups on the structure and properties of polymers were discussed. By tuning reaction conditions, the surface area of these polymers changed from 216.83 to 569.04 m(2)/g. Among all these materials, the polymer with moderate surface area (391.76 m(2)/g), the smallest average pore size (4.27 nm) and low intensity peak of photoluminescence showed the highest H2 evolution rate of 18.56 mu mol.h(-1). When loaded with palladium, it exhibited enhanced H2 evolution rate of up to 43.58 mu mol.h(-1). The results demonstrated that the nitrogen-rich porous polymer has a good potential for H2 evolution from water under UV-Vis light irradiation (lambda = 380-780 nm). This study expanded the scope of porous polymers in photocatalysis applications. The outstanding advantages of the polymers presented here include their low price, commercially available starting compounds and the easy method of synthesis. This kind of porous polymer has promise for further applications. (C) 2016 Elsevier B.V. All rights reserved.