Inorganic phosphate regulated high luminescence NaYF4:Yb3+, Er3+ as an iron ion fluorescent nanoprobe

Lingyu Song; Yongbao Zhu; Jinfeng Wang; Tingxia Wu; Shuo Zhou; Xianbo Zhang; Junping Tang; Jikui Wang; Donghai Lin; Guosong Chen

doi:10.1016/j.saa.2023.122903

Inorganic phosphate regulated high luminescence NaYF₄:Yb³⁺, Er³⁺ as an iron ion fluorescent nanoprobe

Spectrochim Acta A Mol Biomol Spectrosc. 2023 Nov 5:300:122903. doi: 10.1016/j.saa.2023.122903. Epub 2023 May 24.

Authors

Affiliations

¹ School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
² School of Energy and Materials, Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, China.
³ School of Energy and Materials, Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, China. Electronic address: dhlin@sspu.edu.cn.
⁴ School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China. Electronic address: gschen@njtech.edu.cn.

PMID: 37290241
DOI: 10.1016/j.saa.2023.122903

Abstract

The iron ion in industrial circulating cooling water is an important indicator for early warning of equipment corrosion and control level. It is interesting to construct an upconversion luminescence iron ion nanoprobe with a common inorganic phosphate water treatment agent. Herein, inorganic phosphate sodium hexametaphosphate (SHMP) was used to regulate the morphology and functionalization of NaYF₄:Yb³⁺, Er³⁺ upconversion luminescent nanoprobe (UCNPs) and applied to fluorometric detection of trace Fe(III) in water based on the fluorescence quenching which is caused by the selective coordination between hexametaphosphate on the surface of UCNPs and Fe(III). The structure, morphology, and luminous intensity of UCNPs were regulated by disodium hydrogen phosphate (ADSP), sodium tripolyphosphate (STPP) and sodium hexametaphosphate(SHMP). The UCNPs functionalized with SHMP has high sensitivity and selectivity for Fe(III) detection. The linear range and detection limit are 1.0-50 μM and 0.2 μM, respectively. The method has satisfactory results for the detection of trace Fe(III) in industrial circulating cooling water.

Keywords: Fe(III); Fluorescent detection; High luminescence; Inorganic phosphate; Sensor; Upconversion.

MeSH terms

Coloring Agents
Fluorometry
Iron*
Luminescence
Nanoparticles* / chemistry

Substances

Iron
sodium polymetaphosphate
Coloring Agents