水热法合成荧光纳米碳点用于选择性测定Bi~(3+)
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摘要
以L-蛋氨酸和乙二胺为前体,利用一锅水热法合成平均粒径约为4.98nm的碳纳米点.其表现出良好的发光性质,最佳激发波长为380nm,最佳发射波长为454nm,在200～450nm处具有紫外吸收.合成的碳纳米点荧光性能稳定,在1mol/L的NaCl溶液和常见金属离子溶液中荧光性能较为稳定,对Bi 3+具有很强敏感性,其荧光强度与Bi 3+浓度在0～30μmol/L内具有良好的线性关系,可以在此范围内用来选择性检测Bi 3+,检测限为47.6nmol.
Using L-methionine and ethylenediamine as precursors,one pot hydrothermal synthesis of carbon nanodots has been carried out.The average size of synthesized carbon nanodots was 4.98 nm and the carbon nanodots exhibit good luminescent property.The optimum excitation wavelength is 380 nm,the optimum emission wavelength is 454 nm,and the ultraviolet absorption occurs at 200-450 nm.The fluorescence property of the synthesized carbon nanodots is stable.The fluorescence property of the synthesized carbon nanodots is stable in 1 mol/L NaCl solution and common metal ions,but they are sensitive to Bi~(3+).After a lot of experiments,it is found that the fluorescence intensity of the synthesized carbon nanodots has a good linear relationship with the concentration of Bi~(3+)within 0-30 umol/L.Above all,we consider that it can be used to selectively detect Bi~(3+)and the detection limit is 47.6 nmol/L.
Using L-methionine and ethylenediamine as precursors,one pot hydrothermal synthesis of carbon nanodots has been carried out.The average size of synthesized carbon nanodots was 4.98 nm and the carbon nanodots exhibit good luminescent property.The optimum excitation wavelength is 380 nm,the optimum emission wavelength is 454 nm,and the ultraviolet absorption occurs at 200-450 nm.The fluorescence property of the synthesized carbon nanodots is stable.The fluorescence property of the synthesized carbon nanodots is stable in 1 mol/L NaCl solution and common metal ions,but they are sensitive to Bi~(3+).After a lot of experiments,it is found that the fluorescence intensity of the synthesized carbon nanodots has a good linear relationship with the concentration of Bi~(3+)within 0-30 umol/L.Above all,we consider that it can be used to selectively detect Bi~(3+)and the detection limit is 47.6 nmol/L.
引文
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[3]Sun X,He J,Yang S,et al.Green Synthesis of Carbon Dots Originated From Lycii Fructus for Effective Fluorescent Sensing of Ferric Ion and Multicolor Cell Imaging[J].Journal of Photochem Photobiol B,2017,175:219-225
[4]Zeng Q,Shao D,He X,et al.Carbon Dots as a Trackable Drug Delivery Carrier for Localized Cancer Therapy in vivo[J].Journal of Materials Chemistry B,2016,4(30):5119-5126.
[5]郑华,张晨,王兆旭,等.聚对苯二甲酸乙二醇酯共价接枝多壁碳纳米管及其表征[J].高分子材料科学与工程,2009,25(8):138-140.
[6]文丽君.富勒烯及其衍生物在医药领域的应用研究进展[J].中国新技术新产品,2011(19):30-31.
[7]傅强,包信和.石墨烯的化学研究进展[J].科学通报,2009,54(18):2657-2666.
[8]Guo Y,Wang Z,Shao H,et al.Hydrothermal Synthesis of Highly Fluorescent Carbon nanoparticles from Sodium Citrate and Their Use for The Detection of Mercury ions[J].Carbon,2013,52(2):583-589.
[9]Wu Y,Liu X,Wu Q,et al.Carbon Nanodots-Based Fluorescent Turn-On Sensor Array for Biothiols[J].Analytical Chemistry,2017,89(13):7084-7089.
[10] Niu X,Liu G,Li L,et al.Green and economical synthesis of nitrogen-doped carbon dots from vegetables for sensing and imaging applications[J].RSC Advances,2015,5(115):95223-95229.
[11] Fu Z,Yao M,Niu X,et al.Facile synthesis of highly luminescent co-doped carbon nanodots for rapid,sensitive,and label-free detection of Hg2+[J].Sensors&Actuators B Chemical,2016,226:486-494.
[12] Qu K,Wang J,Ren J,et al.Carbon Dots Prepared by Hydrothermal Treatment of Dopamine as an Effective Fluorescent Sensing Platform for the Label-Free Detection of Iron(Ⅲ)Ions and Dopamine[J].Chemistry-A European Journal,2013,19(22):7243-7249.
[13] Duarah R,Karak N.Facile and Ultrafast Green Approach to Synthesize Biobased Luminescent Reduced Carbon Nanodot:An Efficient Photocatalyst[J].Acs Sustainable Chemistry&Engineering,2017,5(10):9454-9466.
[14] Xu X,Ray R,Gu Y,et al.Electrophoretic Analysis and Purification of Fluorescent Single-Walled Carbon Nanotube Fragments[J].Journal of the American Chemical Society,2004,126(40):12736-12737.
[15] Dong X,Shi Y,Huang W,et al.Electrical Detection of DNA Hybridization with Single-Base Specificity Using Transistors Based on CVDGrown Graphene Sheets[J].Advanced Materials,2010,22(14):1649-1653.
[16] Sun Y,Zhou B,Lin Y,et al.Quantum-sized Carbon dots For Bright and Colorful Photoluminescence[J].Journal of the American Chemical Society,2006,128(24):7756-7757.
[17] Zhang M,Zhao X,Fang Z,et al.Fabrication of HA/PEI-Functionalized Carbon dots for Tumor Targeting,Intracellular Imaging and Gene Delivery[J].Rsc Advances,2017,7(6):3369-3375.
[18]鄂雷,辛红.分析化学实验中Bi 3+、Pb2+含量测定实验的绿色化[J].科技资讯,2013(16):174-174.
[19]刘赵荣,弓巧娟,张稳婵,等.电分析法检测药物中铋(Ⅲ)的含量[J].运城学院学报,2011(5):39-41.
[20] Li L,Wu G,Yang G,et al.Focusing on luminescent graphene quantum dots:current status and future perspectives[J].Nanoscale,2013,5(10):4015-4039.