Facile Synthesis of Carbon Quantum Dots by Plasma-liquid Interaction Method

Do Hoang Tung, Tran Thi Thuong, Nguyen Dinh Cong, Nguyen Thanh Liem, Nguyen Van Kha, Le Hong Manh, Pham Hong Minh, Nguyen Thi Thu Thuy, Nguyen Minh Hoa, Nguyen Van Phu
Author affiliations

Authors

  • Do Hoang Tung Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Tran Thi Thuong Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Nguyen Dinh Cong Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Nguyen Thanh Liem Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Nguyen Van Kha Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Le Hong Manh Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Pham Hong Minh Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Nguyen Thi Thu Thuy University of Fire Fighting and Prevention, Hanoi, Vietnam
  • Nguyen Minh Hoa Hue College of Medicine and Pharmacy, Hue, Vietnam
  • Nguyen Van Phu Vinh University, Vinh City, Nghe An Province, Vietnam

DOI:

https://doi.org/10.15625/0868-3166/27/4/10867

Keywords:

carbon quantum dot, plasma nanosynthesis, biomedical application

Abstract

Carbon quantum dots (CQDs) are a novel type of fluorescent nano-materials with various unique properties. They are recently attracting enormous interest due to their superiority in water solubility, chemical inertness, low toxicity, ease of functionalization as well as resistance to photo-bleaching and potential applications in biomedical indication, photo-catalysis, energy conversion, optoelectronics, and sensing. In this work, we present a facile and environmentally friendly synthesis of CQDs based on plasma - liquid interaction method. This is a single-step method and does not use toxic chemicals. The size distribution of obtained CQDs is rather uniform at approximately 3 nm. The emission peak of CQDs shifts from 427 nm to 523 nm as the excitation wavelength is varied from 340 nm to 460 nm. The non-equilibrium reactive chemistry of plasma liquid interaction is responsible for acceleration of the CQDs formation process.

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Published

26-01-2018

Issue

Section

Papers
Received 07-11-2017
Accepted 15-01-2018
Published 26-01-2018

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