Kilogram-scale synthesis of carbon quantum dots for hydrogen evolution, sensing and bioimaging

查看全文 作　　者：Weidong [1]Li;Yuan [2]Liu;Boyang [1]Wang;Haoqiang [1]Song;Zhongyi [1]Liu;Siyu [1]Lu;Bai [3]Yang

机构地区：[1]College of Chemistry,Zhengzhou University,Zhengzhou 450001,China;[2]College of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China;[3]State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012,China

出　　处：《Chinese Chemical Letters》索引2019年第30卷第12期,共5页

基　　金：financial support from Project funded by China postdoctoral Science Foundation (No. 2018M640681) 摘　　要：The development of large-scale synthetic methods for high quality carbon quantum dots(CQDs) is fundamental to their applications.However,the macroscopic preparation and scale up synthetic of CQDs is still in its infancy.Here,we report a facile,green,kilogram-scale synthesis of high quality fluorescent CQDs derived from poplar leaves via a one-step hydrothermal method.Notably,the throughput of CQDs can reach a level up to as high as 1.4975 kg in one pot.The structure and properties of the as-prepared CQDs were assessed through TEM,XRD,XPS and various spectroscopic methods.The obtained high quality CQD s with a photoluminescent quantum yield of 10.64% showed remarkable stability in aqueous media,rich functional groups,high photostability,consistent photoluminescence within biological pH range and low cytotoxicity.On account of these good properties,we demonstrated the multifunctional application to electrocatalytic water splitting,Fe^3+ sensing and bioimaging.It showed remarkable electrocatalytic activity,Fe^3+ sensitivity and good biocompatibility.This study provides a green,facile,inexpensive and large-scale method for producing high quality CQDs,which provides application value for large-scale production of CQDs. 关键词：Kilogram-scale Carbon quantum dots Hydrogen evolution SENSING BIOIMAGING

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Kilogram-scale synthesis of carbon quantum dots for hydrogen evolution, sensing and bioimaging

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