Photocatalytic decomposition of N2O over TiO2/g-C3N4 photocatalysts heterojunction

Kočí, Kamila; Reli, Martin; Troppová, Ivana; Šihor, Marcel; Kupková, Jana; Kuśtrowski, Piotr; Praus, Petr

doi:10.1016/j.apsusc.2016.11.242

Cited by 103 publications

(29 citation statements)

References 48 publications

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“…28 While all other composites showed additional two peaks at 1306 and 1589 cm À1 which are attribute to A 1g phonon pattern and E 2g symmetric phonon vibration of the k point in the graphite-like structure and disordered sp 2 microdomains enclosed by linking with N atoms, showing the successful coupling of TiO 2 on the g-C 3 N 4 sheet and the results are in complete agreement with the literature. 29,30 The inset of Fig. 1b shows the Raman spectrum of pure g-C 3 N 4 with D and G bands located at 1306 and 1589 cm À1 respectively.…”

Section: Biotoxicity Assessment On Escherichia Colimentioning

confidence: 99%

Efficient detoxification of triclosan by a S–Ag/TiO₂@g-C₃N₄hybrid photocatalyst: process optimization and bio-toxicity assessment

et al. 2019

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Section: Biotoxicity Assessment On Escherichia Colimentioning

confidence: 99%

Efficient detoxification of triclosan by a S–Ag/TiO₂@g-C₃N₄hybrid photocatalyst: process optimization and bio-toxicity assessment

et al. 2019

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“…Preparation of ZnO, g-C 3 N 4 , and g-C 3 N 4 /ZnO Nanocomposites ZnO was prepared by precipitation [33]. G-C 3 N 4 was formed by heating of melamine [18,34]. In a synthesis procedure of g-C 3 N 4 /ZnO, the determined amounts of ZnO and g-C 3 N 4 were dispersed in deionized water and evenly mixed (4 h).…”

Section: Methodsmentioning

confidence: 99%

“…In a synthesis procedure of g-C 3 N 4 /ZnO, the determined amounts of ZnO and g-C 3 N 4 were dispersed in deionized water and evenly mixed (4 h). Subsequently, the mixture was dried (at 60 • C in air) and calcined [18]. The weight ratios of prepared g-C 3 N 4 /ZnO photocatalysts were set at 0.05:1, 0.45:1, 2:1, and 3:1, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The products were characterized in detail by N 2 physisorption (Micromeritics), X-ray powder diffraction (XRD, Rigaku, Tokyo, Japan), UV-Vis diffuse reflectance spectra (DRS, IRS-2600Plus), transmission electron microscopy (TEM, JEOL 2100 equipped with an EDS detector, Tokyo, Japan), Fourier transform infrared spectroscopy (FT-IR, Nexus 470 ThermoScientific, Waltham, MA, USA), Raman spectroscopy (DXR SmartRaman (ThermoScientific), photoluminescence (PL) measurements (FLSP920 Series, Edinburgh Instruments, Livingston, UK), and photoelectrochemical measurements (Instytut Fotonowy, Krakow, Poland), and their photocatalytic activity was studied for the photocatalytic decomposition of N 2 O according to the reported method [18,29]. The photocatalytic inactivity of the bare foam was confirmed via blank tests and compared to the blank test without foam.…”

Section: Characterization Of G-c 3 N 4 /Zno Nanocomposite and Photocamentioning

confidence: 99%

“…Looking into the mechanisms, one can identify that four dissimilar models of semiconductor-semiconductor junctions have been utilized to enhance the charge kinetics, including semiconductor sensitization, Type II, phase junction, and Z-scheme [15,16]. In our previous work, heterojunction photocatalysts (g-C 3 N 4 /TiO 2 and g-C 3 N 4 /WO 3 photocatalysts with various weight ratios) were prepared and studied for N 2 O photocatalytic decomposition [17][18][19]. The formation of heterojunctions contributed to the increase of the N 2 O conversion.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Decomposition of N2O by Using Nanostructured Graphitic Carbon Nitride/Zinc Oxide Photocatalysts Immobilized on Foam

et al. 2019

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The aim of this work was to deposit cost-effective g-C 3 N 4 /ZnO nanocomposite photocatalysts (weight ratios of g-C 3 N 4 :ZnO from 0.05:1 to 3:1) as well as pure ZnO and g-C 3 N 4 on Al 2 O 3 foam and to study their photocatalytic efficiency for the photocatalytic decomposition of N 2 O, which was studied in a home-made batch photoreactor under ultraviolet A irradiation (λ = 365 nm). Based on the photocatalysis measurements, it was found that photocatalytic decomposition of N 2 O in the presence of all the prepared samples was significantly higher in comparison with photolysis. The photoactivity of the investigated nanocomposite photocatalysts increased in the following order: g-C 3 N 4 /ZnO (3:1) ≈ g-C 3 N 4 /ZnO (0.45:1) ≤ g-C 3 N 4 /ZnO (2:1) ZnO < g-C 3 N 4 < g-C 3 N 4 /ZnO (0.05:1). The g-C 3 N 4 /ZnO (0.05:1) nanocomposite showed the best photocatalytic behavior and the most effective separation of photoinduced electron-hole pairs from all nanocomposites. The key roles played in photocatalytic activity were the electron-hole separation and the position and potential of the valence and conduction band. On the other hand, the specific surface area and band gap energy were not the significant factors in N 2 O photocatalytic decomposition. Immobilization of the photocatalyst on the foam permits facile manipulation after photocatalytic reaction and their repeated application.

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Ti₄O₇/g‐C₃N₄ Nanocomposites as an Excellently Durable and Active Electrocatalyst for Oxygen Reduction Reaction

Yang

Sun

et al. 2022

Adv Materials Inter

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In this paper, Ti4O7/g‐C3N4 nanocomposites are successfully prepared by hydrothermal and carbothermal reduction reaction. It shows large specific surface area and electrochemical active surface area (ECSA = 187.82 cm2) and can act as an oxidation reduction reaction catalyst. Compared with commercial Pt/C catalyst, Ti4O7/g‐C3N4 nanocomposites show good catalytic activity in alkaline medium. The peak potential, onset potential, and half‐wave potential are 0.74 (versus RHE), 0.96 (versus RHE), and 0.74 V (versus RHE), respectively. It is worth mentioning that Ti4O7/g‐C3N4 catalyst shows better methanol tolerance and cycle stability than commercial Pt/C catalyst. The relative current density attenuation is less than 30% after a long cycle of 24 h.

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Photocatalytic decomposition of N2O over TiO2/g-C3N4 photocatalysts heterojunction

Cited by 103 publications

References 48 publications

Efficient detoxification of triclosan by a S–Ag/TiO₂@g-C₃N₄hybrid photocatalyst: process optimization and bio-toxicity assessment

Efficient detoxification of triclosan by a S–Ag/TiO₂@g-C₃N₄hybrid photocatalyst: process optimization and bio-toxicity assessment

Photocatalytic Decomposition of N2O by Using Nanostructured Graphitic Carbon Nitride/Zinc Oxide Photocatalysts Immobilized on Foam

Ti₄O₇/g‐C₃N₄ Nanocomposites as an Excellently Durable and Active Electrocatalyst for Oxygen Reduction Reaction

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Photocatalytic decomposition of N2O over TiO2/g-C3N4 photocatalysts heterojunction

Cited by 103 publications

References 48 publications

Efficient detoxification of triclosan by a S–Ag/TiO2@g-C3N4hybrid photocatalyst: process optimization and bio-toxicity assessment

Efficient detoxification of triclosan by a S–Ag/TiO2@g-C3N4hybrid photocatalyst: process optimization and bio-toxicity assessment

Photocatalytic Decomposition of N2O by Using Nanostructured Graphitic Carbon Nitride/Zinc Oxide Photocatalysts Immobilized on Foam

Ti4O7/g‐C3N4 Nanocomposites as an Excellently Durable and Active Electrocatalyst for Oxygen Reduction Reaction

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Efficient detoxification of triclosan by a S–Ag/TiO₂@g-C₃N₄hybrid photocatalyst: process optimization and bio-toxicity assessment

Efficient detoxification of triclosan by a S–Ag/TiO₂@g-C₃N₄hybrid photocatalyst: process optimization and bio-toxicity assessment

Ti₄O₇/g‐C₃N₄ Nanocomposites as an Excellently Durable and Active Electrocatalyst for Oxygen Reduction Reaction