Dimolecular interaction between graphitic carbon nitride nanosheets and phenols: A mechanism study

Guan, Enli; Xie, Meng; Shi, Yue; Zhang, Xiaoli; Zhan, Jinhua

doi:10.1016/j.carbon.2016.02.068

Cited by 17 publications

(1 citation statement)

References 63 publications

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“…The insets in figure 8 , where K q is the bimolecular constant and τ is the average lifetime of the fluorophore molecule before quenching. K q exhibits the efficiency of quenching, for dynamic quenching, the maximum scattering collision quenching constant of various quenchers is ∼10 10 Lmol −1 s −1 for carbon nitride [62]. From the slope, the K app has been assessed and the value is 46.37 × 10 3 M −1 for CNNP_Ag + , 29.6 × 10 3 M −1 for CNNP_Ce 3+ , and 89 × 10 3 M −1 for CNNP_Ag + /Ce 3+ , respectively.…”

Section: Sensing Mechanismmentioning

confidence: 99%

Ultrasensitive detection of Ag⁺ and Ce³⁺ ions using highly fluorescent carboxyl-functionalized carbon nitride nanoparticles

Chaulagain,

Garcia,

Manoj

et al. 2024

Nanotechnology

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The fluorescence quenching of carboxyl-rich g-C3N4 nanoparticles was found to be selective to Ag+ and Ce3+ with a limit of detection as low as 30 pM for Ag+ ions. A solid-state thermal polycondensation reaction was used to produce g-C3N4 nanoparticles with distinct green fluorescence and high water solubility. Dynamic light scattering indicated an average nanoparticle size of 95 nm. The photoluminescence absorption and emission maxima were centered at 405 nm and 540 nm respectively which resulted in a large Stokes shift. Among different metal ion species, the carboxyl-rich g-C3N4 nanoparticles were selective to Ag+ and Ce3+ ions, as indicated by strong fluorescence quenching. The PL sensing of mixtures of Ag+/Ce3+ and Ce3+ followed static Stern-Volmer kinetics with the Stern-Volmer constants determined to be 74.18 ×10^3 M-1 and 27.2 ×10^3 M-1 respectively. The PL sensing of Ag+ followed modified Stern-Volmer kinetics. Sensing was also demonstrated using commercial filter paper functionalized with g-C3N4 nanoparticles, enabling practical on-site applications.

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Section: Sensing Mechanismmentioning

confidence: 99%

Ultrasensitive detection of Ag⁺ and Ce³⁺ ions using highly fluorescent carboxyl-functionalized carbon nitride nanoparticles

Chaulagain,

Garcia,

Manoj

et al. 2024

Nanotechnology

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Fluorescence detection of laccases activity by the photoinduced electron transfer (PET) process

et al. 2019

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High performances of mesoporous g-C3N4 for adsorptive desulfurization in model gasoline (iso-octane) solutions

Zhou

Huang

Zhang

et al. 2018

Applied Surface Science

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Dimolecular interaction between graphitic carbon nitride nanosheets and phenols: A mechanism study

Cited by 17 publications

References 63 publications

Ultrasensitive detection of Ag⁺ and Ce³⁺ ions using highly fluorescent carboxyl-functionalized carbon nitride nanoparticles

Ultrasensitive detection of Ag⁺ and Ce³⁺ ions using highly fluorescent carboxyl-functionalized carbon nitride nanoparticles

Fluorescence detection of laccases activity by the photoinduced electron transfer (PET) process

High performances of mesoporous g-C3N4 for adsorptive desulfurization in model gasoline (iso-octane) solutions

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Dimolecular interaction between graphitic carbon nitride nanosheets and phenols: A mechanism study

Cited by 17 publications

References 63 publications

Ultrasensitive detection of Ag+ and Ce3+ ions using highly fluorescent carboxyl-functionalized carbon nitride nanoparticles

Ultrasensitive detection of Ag+ and Ce3+ ions using highly fluorescent carboxyl-functionalized carbon nitride nanoparticles

Fluorescence detection of laccases activity by the photoinduced electron transfer (PET) process

High performances of mesoporous g-C3N4 for adsorptive desulfurization in model gasoline (iso-octane) solutions

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Product

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About

Ultrasensitive detection of Ag⁺ and Ce³⁺ ions using highly fluorescent carboxyl-functionalized carbon nitride nanoparticles

Ultrasensitive detection of Ag⁺ and Ce³⁺ ions using highly fluorescent carboxyl-functionalized carbon nitride nanoparticles