Converting Waste Papers to Fluorescent Carbon Dots in the Recycling Process without Loss of Ionic Liquids and Bioimaging Applications

Yoon Jeong, Kyunghwan Moon, Soohyun Jeong, Won Gun Koh, Kangwon Lee

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Recycling is a fascinating topic in academia due to the environmental and economic benefits in industries. In this paper, we report on the method to recycle cellulose waste papers using a green (eco-friendly) approach based on ionic liquids (ILs) where the regenerated cellulose was converted to carbon dots (CDs). The addition of waste papers to the IL, 1-allyl-3-methylimidazolium chloride ([Amim][Cl]), disrupted the chemical arrangement of cellulose and completely dissolved the waste paper under microwave irradiation. Subsequent cellulose regeneration by an additional antisolvent, absolute ethanol, was carried out to recover IL and obtain cellulosic materials' units from waste papers. Furthermore, we report a practical strategy to fabricate CDs under microwave-assisted irradiation. The CDs made by the regenerated cellulose (RC-CDs) were characterized by using analytical and spectroscopic techniques, such as transmission electron microscopy (TEM) and X-ray diffraction (XRD). Finally, we confirmed that RC-CDs exhibited low cytotoxicity, which suggests RC-CDs acts as a promising fluorescent probe for bioimaging.

Original languageEnglish
Pages (from-to)4510-4515
Number of pages6
JournalACS Sustainable Chemistry and Engineering
Volume6
Issue number4
DOIs
Publication statusPublished - 2018 Apr 2

Fingerprint

Waste paper
Ionic Liquids
Ionic liquids
Recycling
Cellulose
Carbon
recycling
cellulose
carbon
irradiation
Microwave irradiation
Cytotoxicity
Fluorescent Dyes
loss
waste paper
ionic liquid
Chlorides
transmission electron microscopy
ethanol
Ethanol

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

Cite this

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title = "Converting Waste Papers to Fluorescent Carbon Dots in the Recycling Process without Loss of Ionic Liquids and Bioimaging Applications",
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Converting Waste Papers to Fluorescent Carbon Dots in the Recycling Process without Loss of Ionic Liquids and Bioimaging Applications. / Jeong, Yoon; Moon, Kyunghwan; Jeong, Soohyun; Koh, Won Gun; Lee, Kangwon.

In: ACS Sustainable Chemistry and Engineering, Vol. 6, No. 4, 02.04.2018, p. 4510-4515.

Research output: Contribution to journalArticle

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AU - Lee, Kangwon

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