A highly sensitive TiO2-based molecularly imprinted photoelectrochemical sensor with regulation of imprinted sites by Photo-deposition

Yan, Guohao; Han, Zixuan; Hou, Xinghui; Yi, Shasha; Zhang, Zhongtao; Zhou, Ying; Zhang, Liying

doi:10.1016/j.jcis.2023.07.105

Cited by 9 publications

(1 citation statement)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Molecularly imprinted materials (MIMs) are a type of specific recognition material that introduces template molecules during the synthesis process and removes them after the synthesis process. 39 The resulting MIMs produce antigen/ antibody-like recognition effects on template molecules and their structural analogues. 40 Therefore, MIMs are commonly used for specific recognition, selective enrichment, and so forth.…”

Section: Introductionmentioning

confidence: 99%

Molecularly Imprinted Heterostructure-Assisted Laser Desorption Ionization Mass Spectrometry Analysis and Imaging of Quinolones

Wang,

Zhang,

Liang

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Quinolone residues resulting from body metabolism and waste discharge pose a significant threat to the ecological environment and to human health. Therefore, it is essential to monitor quinolone residues in the environment. Herein, an efficient and sensitive matrix-assisted laser desorption/ionization mass spectrometry (MALDI/MS) method was devised by using a novel molecularly imprinted heterojunction (MIP-TNs@GCNs) as the matrix. Molecularly imprinted titanium dioxide nanosheets (MIP-TNs) and graphene-like carbon nitrides (GCNs) were associated at the heterojunction interface, allowing for the specific, rapid, and high-throughput ionization of quinolones. The mechanism of MIP-TNs@GCNs was clarified using their adsorption properties and laser desorption/ionization capability. The prepared oxygen-vacancy-rich MIP-TNs@GCNs heterojunction exhibited higher light absorption and ionization efficiencies than TNs and GCNs. The good linearity (in the quinolone concentration range of 0.5−50 pg/ μL, R 2 > 0.99), low limit of detection (0.1 pg/μL), good reproducibility (n = 8, relative standard deviation [RSD] < 15%), and high salt and protein resistance for quinolones in groundwater samples were achieved using the established MIP-TNs@GCNs−MALDI/ MS method. Moreover, the spatial distributions of endogenous compounds (e.g., amino acids, organic acids, and flavonoids) and xenobiotic quinolones from Rhizoma Phragmitis and Rhizoma Nelumbinis were visualized using the MIP-TNs@GCNs film as the MALDI/MS imaging matrix. Because of its superior advantages, the MIP-TNs@GCNs−MALDI/MS method is promising for the analysis and imaging of quinolones and small molecules.

show abstract

Section: Introductionmentioning

confidence: 99%