Fluorescence Properties of ZnOQDs-GO-g-C3N4 Nanocomposites

Tianze Liu; Lei Wang; Ruxue Jiang; Yashi Tang; Yuxin He; Changze Sun; Yuguang Lv; Shuang Liu

doi:10.3390/mi14040711

Fluorescence Properties of ZnOQDs-GO-g-C₃N₄ Nanocomposites

Micromachines (Basel). 2023 Mar 23;14(4):711. doi: 10.3390/mi14040711.

Authors

Tianze Liu¹, Lei Wang², Ruxue Jiang², Yashi Tang², Yuxin He², Changze Sun³, Yuguang Lv², Shuang Liu⁴

Affiliations

¹ College of Clinical Medicine, Jiamusi University, Jiamusi 154007, China.
² College of Pharmacy, Jiamusi University, Jiamusi 154007, China.
³ School of Mechanical Engineering, Jiamusi University, Jiamusi 154007, China.
⁴ College of Basic Medicine, Jiamusi University, Jiamusi 154007, China.

Abstract

In this paper, the fluorescence properties of ZnOQD-GO-g-C₃N₄ composite materials (ZCGQDs) were studied. Firstly, the addition of a silane coupling agent (APTES) in the synthesis process was explored, and it was found that the addition of 0.04 g·mL^-1 APTES had the largest relative fluorescence intensity and the highest quenching efficiency. The selectivity of ZCGQDs for metal ions was also investigated, and it was found that ZCGQDs showed good selectivity for Cu²⁺. ZCGQDs were optimally mixed with Cu²⁺ for 15 min. ZCGQDs also had good anti-interference capability toward Cu²⁺. There was a linear relationship between the concentration of Cu²⁺ and the fluorescence intensity of ZCGQDs in the range of 1~100 µM. The regression equation was found to be F₀/F = 0.9687 + 0.12343C. The detection limit of Cu²⁺ was about 1.74 μM. The quenching mechanism was also analyzed.

Keywords: fluorescence probe; fluorescence properties; metal ion; nanocomposites.

Grants and funding

This research was funded by [the Department of Scientific Research Project in Heilongjiang Province] grant number [LH2022B022], and the APC was funded by [Tianze Liu]. [Jiamusi University Horizontal Research Project] grant number [210428001; 021040301], and the APC was funded by [Shuang Liu]. [the Innovation and Entrepreneurship Project for College Students in Heilongjiang Province] grant number [S202210222018], and the APC was funded by [Tianze Liu].