Formation of N, S-codoped fluorescent carbon dots from biomass and their application for the selective detection of mercury and iron ion.
Biomass is regarded as an excellent candidate for the preparation of heteroatom-doped carbon nanomaterials. We have developed a simple and facile one-pot synthesis of nitrogen and sulfur codoped fluorescent carbon dots from pigeon feathers, egg and manure via the pyrolysis carbonization method. The as-prepared four PCDs have high fluorescence quantum yield about 24.87% (PCDs-f), 17.48% (PCDs-w), 16.34% (PCDs-y), 33.50% (PCDs-m), respectively, which is higher than the other carbon dots preparing from biomass. We found that the preparation of PCDs-m with pigeon manure has no favourable selectively with heavy metal ions. However, other PCDs exhibit highly sensitive and selective detection behavior of Hg2+/Fe3+ions with a low detection limit of 10.3 and 60.9nM. They were applied to imaging of human umbilical vein endothelial cells, showing low cytotoxicity and good biocompatibility.
State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
Qianghua
Q
Ye
State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China. Electronic address: yfany@163.com.
Fanyong
F
Yan
Department of Pharmacology, Key Laboratory for Basic Pharmacology of Ministry of Education, Zunyi Medical College, China.
Yunmei
Y
Luo
School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
Yinyin
Y
Wang
State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China. Electronic address: xaodayin@sohu.com.
Xuguang
X
Zhou
State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
Li
L
Chen
D000818:Animals; D002244:Carbon / Q000737:chemistry*; D010856:Columbidae; D007501:Iron / Q000032:analysis*; D008372:Manure; D008628:Mercury / Q000032:analysis*; D045663:Quantum Dots / Q000737:chemistry*
D008372:Manure; D002244:Carbon; D007501:Iron; D008628:Mercury
Bioimaging; Biomass; Carbon dots; Fluorescent; Ion detection