Ag-Doped g-C<sub>3</sub>N<sub>4</sub> film electrode: fabrication, characterization and photoelectrocatalysis property

Qi, Fanjing; Li, Yibing; Wang, Yanbin; Wang, Yan; Liu, Shanshan; Zhao, Xu

doi:10.1039/c6ra17613e

Cited by 48 publications

(12 citation statements)

References 39 publications

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“…The Ag‐g‐C 3 N 4 nanosheets was prepared according to the literature . Firstly, melamine powder (5.0 g) and 151 mg of silver nitrate (AgNO 3 ) were dissolved in 5 ml of water and ultrasonicated for 30 min to form a slurry.…”

Section: Methodsmentioning

confidence: 99%

Silver‐doped graphite carbon nitride nanosheets as fluorescent probe for the detection of curcumin

Yang

Wang³

et al. 2018

Luminescence

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Green fluorescent silver (Ag)-doped graphite carbon nitride (Ag-g-C N ) nanosheets have been fabricated by an ultrasonic exfoliating method. The fluorescence of the Ag-g-C N nanosheets is quenched by curcumin. The fluorescence intensity decreases with the increase in the concentration of curcumin, indicating that the Ag-g-C N nanosheets can function as a non-toxic and facile fluorescence probe to detect curcumin. The fluorescence intensity of Ag-g-C N nanosheets shows a linear relationship to curcumin in the concentration range 0.01-2.00 μM with a low detection limit of 38 nM. The fluorescence quenching process between curcumin and Ag-g-C N nanosheets mainly is based on static quenching. The fluorescent probe has been successfully applied to analyse curcumin in human urine and serum samples with satisfactory results.

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Section: Methodsmentioning

confidence: 99%

Silver‐doped graphite carbon nitride nanosheets as fluorescent probe for the detection of curcumin

Yang

Wang³

et al. 2018

Luminescence

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“…Many studies have been devoted to improve the photocatalytic oxidation activity by modified g-C 3 N 4 using copolymerization, metal and anion doping and applying bias voltage etc. (Han et al, 2014;Hu et al, 2014;Qi et al, 2016;Yan et al, 2014;Zhong et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Persulfate enhanced photocatalytic degradation of bisphenol A by g-C3N4 nanosheets under visible light irradiation

et al. 2017

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The enhancement of g-CN photocatalytic degradation of bisphenol A (BPA) via persulfate (PS) addition was investigated under visible light irradiation. The effects of various parameters on the BPA degradation were investigated, such as catalysts dosage, PS concentrations, initial pH value and BPA concentration. The results showed that g-CN nanosheets exhibited superior photocatalytic activity toward BPA degradation as compared with bulk g-CN. The addition of PS can further improve the g-CN photocatalytic performance for BPA degradation. With 5 mM PS, the degradation rate of BPA was increased from 72.5% to 100% at 90 min, and the corresponding first-order kinetic constants were increased from 0.0028 to 0.0140 min. The removal efficiency of BPA increased with the decrease of solution pH value. The active radicals in the reaction system were tested by electron spin resonance (ESR) and radicals quenching experiments. Instead of persulfate radicals' oxidation, it was proposed that the main active radicals for BPA degradation were superoxide radicals and the photogenerated holes.

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“…This XRD spectrum unambiguously confirmed that Eg-C 3 N 4 was self-assembled on CS. The AgNP/Eg-C 3 N 4 /CS nanocomposite showed several diffraction peaks at 37.95, 44.08, 64.27, and 77.33°, which are related to the (111), (200), (220), and (311) planes of the FCC structure of AgNPs, respectively. − These were correlated with JCPDS card no. 01-089-3722 of AgNPs.…”

Section: Resultsmentioning

confidence: 62%

Self-Assembled Silver Nanoparticles Decorated on Exfoliated Graphitic Carbon Nitride/Carbon Sphere Nanocomposites as a Novel Catalyst for Catalytic Reduction of Cr(VI) to Cr(III) from Wastewater and Reuse for Photocatalytic Applications

Prabakaran

Pillay

2021

ACS Omega

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Silver nanoparticles decorated on an exfoliated graphitic carbon nitride/carbon sphere (AgNP/Eg-C 3 N 4 /CS) nanocomposites were synthesized by an adsorption method with a self-assembled process. These nanoparticles were characterized by different techniques like UV–visible (UV–vis) spectroscopy, photoluminescence (PL) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermal gravimetric analysis (TGA), Raman spectroscopy, scanning electron spectroscopy (SEM), transmission electron spectroscopy (TEM), electrochemical impedance spectroscopy (EIS), and ζ potential. AgNP/Eg-C 3 N 4 /CS nanocomposites showed a higher catalytic reduction activity for the conversion of Cr(VI) into Cr(III) with formic acid (FA) at 45 °C when compared to bulk graphitic carbon nitride (Bg-C 3 N 4 , Eg-C 3 N 4 , CS, and Eg-C 3 N 4 /CS). The kinetic rate constants were determined as a function of catalyst dosage, concentration of Cr(VI), pH, and temperature for the AgNP/Eg-C 3 N 4 /CS nanocomposite. This material showed higher reduction efficiency (98.5%, k = 0.0621 min –1 ) with turnover frequency (0.0158 min –1 ) for the reduction of Cr(VI) to Cr(III). It also showed great selectivity and high stability after six repeated cycles (98.5%). Further, the reusability of the Cr(III)-AgNP/Eg-C 3 N 4 /CS nanocomposite was also investigated for the photocatalytic degradation of methylene blue (MB) under visible light irradiation with various time intervals and it showed good degradation efficiency (α = 97.95%). From these results, the AgNP/Eg-C 3 N 4 /CS nanocomposite demonstrated higher catalytic activity, improved environmental friendliness, lower cost for the conversion of toxic Cr(VI) to Cr(III) in solutions, and also good reusability.

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Ag-Doped g-C₃N₄ film electrode: fabrication, characterization and photoelectrocatalysis property

Cited by 48 publications

References 39 publications

Silver‐doped graphite carbon nitride nanosheets as fluorescent probe for the detection of curcumin

Silver‐doped graphite carbon nitride nanosheets as fluorescent probe for the detection of curcumin

Persulfate enhanced photocatalytic degradation of bisphenol A by g-C3N4 nanosheets under visible light irradiation

Self-Assembled Silver Nanoparticles Decorated on Exfoliated Graphitic Carbon Nitride/Carbon Sphere Nanocomposites as a Novel Catalyst for Catalytic Reduction of Cr(VI) to Cr(III) from Wastewater and Reuse for Photocatalytic Applications

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Ag-Doped g-C3N4 film electrode: fabrication, characterization and photoelectrocatalysis property

Cited by 48 publications

References 39 publications

Silver‐doped graphite carbon nitride nanosheets as fluorescent probe for the detection of curcumin

Silver‐doped graphite carbon nitride nanosheets as fluorescent probe for the detection of curcumin

Persulfate enhanced photocatalytic degradation of bisphenol A by g-C3N4 nanosheets under visible light irradiation

Self-Assembled Silver Nanoparticles Decorated on Exfoliated Graphitic Carbon Nitride/Carbon Sphere Nanocomposites as a Novel Catalyst for Catalytic Reduction of Cr(VI) to Cr(III) from Wastewater and Reuse for Photocatalytic Applications

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Ag-Doped g-C₃N₄ film electrode: fabrication, characterization and photoelectrocatalysis property