Determination of thiourea based on the reversion of fluorescence quenching of nitrogen doped carbon dots by Hg 2+
作者: Cengceng ZhangShu WuYuanyuan YuFang Chen
作者单位: 1Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Key laboratory of Material Chemistry for Energy Conversion and Storage (HUST), Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
刊名: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2020, Vol.227
来源数据库: Elsevier Journal
DOI: 10.1016/j.saa.2019.117666
关键词: Nitrogen doped carbon dotsThioureaHg 2+DeterminationFluorescence quenchingFluorescence recovering
英文摘要: Abstract(#br)Herein, a facile and quick strategy to detect thiourea was conducted based on the reversion of fluorescence quenching of nitrogen doped carbon dots (NCDs) by Hg 2+ . The NCDs with good water solubility and 17% of quantum yield was synthesized by one-step hydrothermal method, using ammonium citrate and dextrin as carbon source and nitrogen source, respectively. The fluorescence of NCDs was obviously quenched by Hg 2+ and can be recovered, due to stronger interaction between thiourea and Hg 2+ . There was a good linear relationship between the recovered fluorescence and the concentration of thiourea within range of 0.90–10.0 μM and the detection limit for thiourea detection was 0.15 μM. The as-prepared NCDs can be used for determination of thiourea in tap water, lake water and...
全文获取路径: Elsevier  (合作)
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关键词翻译
关键词翻译
  • reversion 返祖
  • thiourea 硫脲
  • carbon 
  • nitrogen 
  • fluorescence 荧光
  • quenching 猝熄
  • doped 掺杂(了)的掺了添加剂的
  • based 基于