Citation: Li Weidong, Liu Yuan, Wang Boyang, Song Haoqiang, Liu Zhongyi, Lu Siyu, Yang Bai. Kilogram-scale synthesis of carbon quantum dots for hydrogen evolution, sensing and bioimaging[J]. Chinese Chemical Letters, ;2019, 30(12): 2323-2327. doi: 10.1016/j.cclet.2019.06.040 shu

Kilogram-scale synthesis of carbon quantum dots for hydrogen evolution, sensing and bioimaging

Li Weidong ^a ,
Liu Yuan ^b ,
Wang Boyang ^a ,
Song Haoqiang ^a ,
Liu Zhongyi ^a ,
Lu Siyu ^a,*, ,
Yang Bai ^c

a.
College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
b.
College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
c.
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China

sylu2013@zzu.edu.cn

Received Date: 21 May 2019
Revised Date: 18 June 2019
Accepted Date: 21 June 2019
Available Online: 21 December 2019

Figures(4)

The development of large-scale synthetic methods for high quality carbon quantum dots (CQDs) is fundamental to their applications. However, the macroscopic preparation and scale up synthetic of CQDs is still in its infancy. Here, we report a facile, green, kilogram-scale synthesis of high quality fluorescent CQDs derived from poplar leaves via a one-step hydrothermal method. Notably, the throughput of CQDs can reach a level up to as high as 1.4975 kg in one pot. The structure and properties of the as-prepared CQDs were assessed through TEM, XRD, XPS and various spectroscopic methods. The obtained high quality CQDs with a photoluminescent quantum yield of 10.64% showed remarkable stability in aqueous media, rich functional groups, high photostability, consistent photoluminescence within biological pH range and low cytotoxicity. On account of these good properties, we demonstrated the multifunctional application to electrocatalytic water splitting, Fe³⁺ sensing and bioimaging. It showed remarkable electrocatalytic activity, Fe³⁺ sensitivity and good biocompatibility. This study provides a green, facile, inexpensive and large-scale method for producing high quality CQDs, which provides application value for large-scale production of CQDs.
- Kilogram-scale,
- Carbon quantum dots,
- Hydrogen evolution,
- Sensing,
- Bioimaging
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