光催化
介孔材料
材料科学
苯并咪唑
化学工程
钛
纳米孔
聚合物
多孔性
纳米技术
催化作用
化学
有机化学
复合材料
工程类
冶金
作者
Zhijing Li,Zecheng Ye,Limin Chen,Jie Cui,Jinzhu Chen
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2020-10-27
卷期号:3 (11): 10720-10731
被引量:9
标识
DOI:10.1021/acsanm.0c01953
摘要
Construction of macroporosity-added hierarchical porous coordination polymers (CPs) as nanocatalysts is of great significance for their improved catalytic performance by promoting mass transfer and molecular accessibility. We present an efficient and one-step fabrication process of hierarchically macro/mesoporous titanium-based CP materials by using CO2-derived “distillable” ionic liquids (ILs) as a “reactive” solvent through a template-free strategy. The as-synthesized sponge-like CPs, composed of titanium terephthalate units, show a macropore-size range from 120 to 470 nm with a mean mesopore size of 7.6 nm. The defect-formation mechanism is proposed for macro/mesoporous CP formation via IL-induced uniquely synergistic effects of CO2 bubble perturbation, base-etching, pore-expanding, and reconstruction in one step. The hierarchical CP-derived macro/mesoporous semiconductor integrates a high thermostability and special porosity, which make it an efficient photocatalyst for green synthesis of benzimidazole from 1,2-phenylenediamine and ethanol (or triethylamine) under visible light irradiation.
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