"All-in-one" carbon dots-based catalyst for converting CO2 to cyclic carbonates

被引：20

作者：

Wang, Ruijia ^{[1
]}

Wan, Jianyong ^{[1
]}

Guo, Hongda ^{[1
]}

Tian, Bing ^{[1
]}

Li, Shujun ^{[1
]}

Li, Jian ^{[1
]}

Liu, Shouxin ^{[1
]}

James, Tony D. ^{[2
,3
]}

Chen, Zhijun ^{[1
]}

机构：

[1] Northeast Forestry Univ, Key Lab Biobased Mat Sci & Technol, Minist Educ, Harbin 150040, Peoples R China

[2] Univ Bath, Dept Chem, Bath BA2 7AY, England

[3] Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Peoples R China

来源：

CARBON | 2023年 / 211卷

基金：

中国国家自然科学基金;

关键词：

Carbon dots; CO2; conversion; Luminescence; Polymer composites; QUANTUM DOTS; FACILE PREPARATION; GRAPHENE OXIDE; DIOXIDE; CYCLOADDITION; NITRIDE; CONVERSION; EPOXIDES; ACTIVATION; REDUCTION;

D O I：

10.1016/j.carbon.2023.118118

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Converting CO2 with various epoxides to cyclic carbonates is extremely important. However, most of catalysts for such conversion either require complicated fabrication or are obtained from unsustainable sources. Motivated by this problem, we prepare biomass-based "all-in-one" carbon dots as nano-organocatalysts for firstly converting CO2 to cyclic carbonates. In this work, carbon dots (CD@KI) with high catalytic performance and good recy-clability are prepared from sodium phytate (SP), polyethylenimine (PEI) and KI using one-pot hydrothermal treatment featuring cheap precursors and simple operation. Assisted by highly catalytic activity of CD@KI, up to 99.5% yield is achieved for converting CO2 and various epoxides to cyclic carbonates under mild conditions (solvent-free and 1 atm of CO2). Moreover, the conversion yield is maintained for reactions up to 10 g in scale. Significantly, by taking advantage of the inherent luminescence of CD@KI, the as-formed cyclic carbonates catalysed by CD@KI can be directly converted to afterglow polymer composites.

引用

页数：9

共 77 条

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