Scholarlink

<p>The wastewater from municipal solid waste incineration power plants contains abundant carbon particles and a variety of pollutants. In this study, fluorescent carbon dots (CDs) were obtained from slag-washing wastewater of a waste incineration power plant due to the good water solubility of CDs after employing centrifugation, membrane filtration, and dialysis for separating and extracting CDs. It has been shown that CDs and graphene fragments with a size of &lt; 10&#xa0;nm were produced during the waste incineration process. The obtained CDs possess an average diameter of 2.17&#xa0;nm and exhibit stable blue photoluminescence with a quantum yield of 38.46% corresponding to the emission wavelength of 460&#xa0;nm. Spectroscopic analysis of the CDs suggests that the emission from CDs is mainly associated with surface states, and contributions from molecular states of the polycyclic aromatic hydrocarbon molecules adsorbed on the surface of CDs. These as-obtained CDs show biocompatibility and good photostability. It can be used for various purposes such as detecting glutathione (GSH), cell imaging, and wavelength conversion of light. Importantly, this study highlights the possibility of recovering fluorescent nanoscale carbon materials from a complex industrial wastewater, and providing an effective way for recycling and utilization of fluorescent CDs in slag-washing wastewater from waste incineration power plants.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Recovery and utilization of fluorescent carbon dots from slag-washing wastewater of waste incineration power plants for cell imaging

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月28日

查看全文
  • Zhexian Zhao,
  • Weizuo Zhang,
  • Han Bai,
  • Linjie Sun,
  • Jin Zhang,
  • Yuzhao Li,
  • Zhongcai Jin,
  • Na Yang,
  • Wen Xu,
  • Yanfei Lü,
  • Yiming Xiao

摘要

The wastewater from municipal solid waste incineration power plants contains abundant carbon particles and a variety of pollutants. In this study, fluorescent carbon dots (CDs) were obtained from slag-washing wastewater of a waste incineration power plant due to the good water solubility of CDs after employing centrifugation, membrane filtration, and dialysis for separating and extracting CDs. It has been shown that CDs and graphene fragments with a size of < 10 nm were produced during the waste incineration process. The obtained CDs possess an average diameter of 2.17 nm and exhibit stable blue photoluminescence with a quantum yield of 38.46% corresponding to the emission wavelength of 460 nm. Spectroscopic analysis of the CDs suggests that the emission from CDs is mainly associated with surface states, and contributions from molecular states of the polycyclic aromatic hydrocarbon molecules adsorbed on the surface of CDs. These as-obtained CDs show biocompatibility and good photostability. It can be used for various purposes such as detecting glutathione (GSH), cell imaging, and wavelength conversion of light. Importantly, this study highlights the possibility of recovering fluorescent nanoscale carbon materials from a complex industrial wastewater, and providing an effective way for recycling and utilization of fluorescent CDs in slag-washing wastewater from waste incineration power plants.