甲醇
催化作用
光催化
三嗪
纳米颗粒
表面改性
材料科学
复合数
聚合物
打赌理论
化学工程
化学
高分子化学
有机化学
纳米技术
复合材料
工程类
作者
Dip Kumar Nandi,Jhumur Seth,Pekham Chakrabortty,Avik Chowdhury,Asim Bhaumik,Sk. Manirul Islam,S. Ghosh
标识
DOI:10.1002/cctc.202301018
摘要
Abstract Porous organic polymers (POPs) have attracted substantial attentions over the years due to their exceptionally high specific surface areas, high chemical stability of the organic network and ease of surface functionalization with the desired organic groups. In this work, a triazine based POP (TrzPOP) was synthesized through Schiff base polycondensation reaction between a tetramine bearing triazine rings and phenolic–OH group rich dialdehyde. Ni nanoparticles (NiNP) synthesized independently were immobilized over TrzPOP to obtain the NiNP@TrzPOP composite catalyst. This TrzPOP possesses a high BET surface area of 1494 m 2 g −1 and low band gap, which facilitates its role as visible light absorbent. NiNP@TrzPOP with N‐rich surfaces and phenolic–OH moieties displayed excellent photocatalytic activity in the CO 2 photoreduction under mild reaction conditions. NiNP@TrzPOP composite selectively reduces CO 2 to methanol. The turn over number (TON) for this photoreduction of CO 2 under optimized reaction conditions is 270, which is considerably high comparing to other reported photocatalytic systems. Moreover, NiNP@TrzPOP composite catalytic system showed high recycling efficiency without noticeable decrease in its performance over five consecutive reaction cycles, suggesting its huge potential for large‐scale methanol synthesis from the renewable carbon source.
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