Citation: ZHONG Shi-Long, ZHANG Ling-Ling, LIU Jing, LIU Xiang-Jun, CHANG Tian-Jun, SHANGGUAN Di-Hua. Carbon Quantum Dots-based Mesoporous Nanomaterials for Detection of Copper Ion[J]. Chinese Journal of Analytical Chemistry, ;2022, 50(1): 47-53. doi: 10.19756/j.issn.0253-3820.211101 shu

Carbon Quantum Dots-based Mesoporous Nanomaterials for Detection of Copper Ion

1.
Department of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China;
2.
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
3.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: LIU Xiang-Jun, CHANG Tian-Jun,
Received Date: 4 February 2021
Revised Date: 15 October 2021

Fund Project: Supported by the National Natural Science Foundation of China (Nos.21877115, U1704241).

Carbon quantum dots-based mesoporous mesoporous silica nanomaterials (CD-MSN) was designed and prepared for detection and adsorption of Cu²⁺. The fluorescence of CD-MSN could be selectively quenched by Cu²⁺, therefore, a fluorescence method was established for detection of Cu²⁺. A linear response range was found in the Cu²⁺ concentration range from 1.0 to 10.0 μmol/L, with limit of detection (LOD, S/N=3) of 0.22 μmol/L. Meanwhile, the maximal adsorption capacity of CD-MSN for Cu²⁺ was determined as 5.71 mg/g by inductively coupled plasma optical emission spectrometry (ICP-OES). In addition, the CD-MSN was successfully applied to detect Cu²⁺ in real tap water samples. The results suggested that the synthesized CD-MSN had the potential in detection of Cu²⁺ in real water samples.
- Carbon quantum dots,
- Mesoporous nanomaterials,
- Fluorescence,
- Copper ion
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沈阳化工大学材料科学与工程学院沈阳 110142