具有高传质和亲和表面的NH2-UIO-66基疏水多孔液体用于增强CO2光还原
NH2-UIO-66 Based Hydrophobic Porous Liquid with High Mass Transfer and Affinity Surface for Enhancing CO2 Photoreduction
摘要
Abstract
Increasing the CO2 concentration on the surface of the photocatalysts helps to increase the reaction dynamic rate of the photocatalytic CO2 reduction.However,the low solubility and poor mass transfer of CO2 in aqueous phase seriously hinder the adsorption and conversion of CO2 at the active site.In this work,the porous liquid photocatalyst(NH2-UIO-66 PL)with strong hydrophobicity has been synthesized by grafting the hydrophobic liquid end long-chain(PDMS)onto the amino site of metal-organic framework(NH2-UIO-66).It is found that the NH2-UIO-66 PL with permanent porosity causes a large amount of CO2 to be concentrated in the porous liquid cavity for transporting and diffusing CO2 onto the photocatalyst surface rapidly,and then the CO2 affinity surface with high positive potential and key intermediates for activation reduction reactions are formed with the grafting of hydrophobic PDMS,leading to stronger electron enrichment Zr active sites for enhancement of the overall CO2 reduction ability.As a result,NH2-UIO-66 PL achieved CO2 photoreduction with a CO yield of 24.70 μmol∙g-1∙h-1 and CH4 yield of 7.93 μmol∙g-1∙h-1,which is 2.3-fold and 2.7-fold compared to hydrophilic NH2-UIO-66,respectively.This research provides a novel design of hydrophobic porous liquids to provide industrial possibilities for high CO2 adsorption and reduction.关键词
多孔液体/UIO-66/疏水表面/CO2传输通道/CO2光还原Key words
Porous liquids/UIO-66/Hydrophobic surface/CO2 transport channel/CO2 photoreduction分类
化学化工引用本文复制引用
徐阳锐,任叶炜,刘馨琳,李宏平,逯子扬..具有高传质和亲和表面的NH2-UIO-66基疏水多孔液体用于增强CO2光还原[J].物理化学学报,2024,40(11):29-30,2.基金项目
The project was supported by the National Natural Science Foundation of China(22278190),Zhenjiang Carbon Emissions Peak/Carbon Neutrality Science and Technology Innovation Special Fund Project(CQ2022009),Open Project of State Key Laboratory of Structural Chemistry(20230022),Qing Lan Project of Jiangsu Province(2023),Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment,Project of Research on Educational Reform and Talent Development of School of Emergency Management of Jiangsu University(JG-03-11),and the Special Scientific Research Project of School of Emergency Management of Jiangsu University(KY-C-12). 国家自然科学基金项目(22278190) （22278190）
镇江市碳达峰碳中和科技创新专项—产业前瞻与共性关键技术攻关项目(CQ2022009) （CQ2022009）
结构化学国家重点实验室开放项目(20230022) （20230022）
江苏省青蓝工程人才项目(2023) （2023）
江苏水处理技术与材料协同创新中心、江苏大学应急管理学院教育教改研究和人才培养专项项目(JG-03-11) （JG-03-11）
江苏大学应急管理学院专项科研项目(KY-C-12) （KY-C-12）
