MOF-derived TiO2 modified with g-C3N4 nanosheets for enhanced visible-light photocatalytic performance

Li, Ping; Zhang, Xiaoxian; Qiu, Lingfang; Xu, Xun; Si, Ying; Liang, Tingting; Liu, Huan; Chu, Jianzhou; Guo, Jixin; Duo, Shuwang

doi:10.1039/d0nj00746c

Cited by 29 publications

(10 citation statements)

References 29 publications

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“…6a. Spectra unveiled migration and electron-hole (e − to h + ) pairs recombination efficiency [40]. Characteristic peak of TiO 2 at 455 nm showed the highest recombination of e − to h + pairs which significantly limited PCA of TiO 2 whereas recombination rate was decreased upon Fig.…”

Section: Resultsmentioning

confidence: 99%

“…PL emission spectra of TiO 2 and its composites were computed from 410 to 520 nm with an excited wavelength of 350 nm at room temperature, as illustrated in Fig. 6 a. Spectra unveiled migration and electron–hole (e − to h + ) pairs recombination efficiency [ 40 ]. Characteristic peak of TiO 2 at 455 nm showed the highest recombination of e − to h + pairs which significantly limited PCA of TiO 2 whereas recombination rate was decreased upon co-doping (N and C 3 N 4 ).…”

Section: Resultsmentioning

confidence: 99%

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Nitrogen and Carbon Nitride-Doped TiO2 for Multiple Catalysis and Its Antimicrobial Activity

et al. 2021

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Nitrogen (N) and carbon nitride (C3N4)-doped TiO2 nanostructures were prepared using co-precipitation route. Fixed amount of N and various concentrations (0.1, 0.2, 0.3 wt%) of C3N4 were doped in TiO2 lattice. Through multiple techniques, structural, chemical, optical and morphological properties of samples were thoroughly investigated. XRD results verified anatase TiO2 presence along the substitutional doping of N, while higher degree of crystallinity as well as increased crystallite size were noticed after doping. HR-TEM study revealed formation of nanostructures incorporated on two dimensional (2D) C3N4 nanosheet surface. Elemental composition was checked out using EDS technique which confirmed the presence of dopant in product. Optical characteristics were evaluated with UV–vis spectroscopy which depicted representative redshift in absorption spectra resulted in a reduction in bandgap energy in N/C3N4-doped TiO2 samples. The formation of Ti–O–Ti bonds and different molecular vibrations were disclosed by FTIR. Trap sites and charge carrier’s migration in the materials were evaluated with PL spectroscopy. Multiple catalytic activities (photo, sono and photo-sono) were undertaken to evaluate the dye degradation performance of prepared specimen against methylene blue and ciprofloxacin. Further, antimicrobial activity was analyzed against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) bacteria.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Nitrogen and Carbon Nitride-Doped TiO2 for Multiple Catalysis and Its Antimicrobial Activity

et al. 2021

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“…Meanwhile, some specific products in CO 2 photoreduction can easily desorb from the surfaces of certain nanosheets, resulting in a high selectivity in reaction. [ 215–217 ] A large variety of monocomponent and multicomponent hybrid nanosheets were prepared to maximize these advantages in CO 2 reduction.…”

Section: Nano‐/microstructure Engineeringmentioning

confidence: 99%

Inside‐and‐Out Semiconductor Engineering for CO₂ Photoreduction: From Recent Advances to New Trends

et al. 2020

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Photocatalytic CO2 reduction attracts substantial interests for the production of chemical fuels via solar energy conversion, but the activity, stability, and selectivity of products were severely determined by the efficiencies of light harvesting, charge migration, and surface reactions. Structural engineering is a promising tactic to address the aforementioned crucial factors for boosting CO2 photoreduction. Herein, a timely and comprehensive review focusing on the recent advances in photocatalytic CO2 conversion based on the design strategies over nano‐/microstructure, crystalline and band structure, surface structure and interface structure is provided, which covers both the thermodynamic and kinetic challenges in CO2 photoreduction process. The key parameters essential for tailoring the size, morphology, porosity, bandgap, surface, or interfacial properties of photocatalysts are emphasized toward the efficient and selective conversion of CO2 into valuable chemicals. New trends and strategies in the structural design to meet the demands for prominent CO2 photoreduction activity are also introduced. It is expected to furnish a comprehensive guideline for inside‐and‐out design of state‐of‐the‐art photocatalysts with well‐defined structures for CO2 conversion.

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“…The g-C 3 N 4 is a visible light active photocatalyst [34]. The proportional addition of g-C 3 N 4 to the TiO 2 in GNT composite shows a redshift from 394 to 471 nm (GNT-1), which increases the visible-light absorption than bare TiO 2 [35,36]. So, we can conclude that there is the evolution of a well-built interface connecting the g-C 3 N 4 and TiO 2 phases and causing GNT composite to move to the lower energy region presided by an increase in photocatalytic activity [37,38].…”

Section: Uv-vis Diffuse Reflectance Spectramentioning

confidence: 99%

Development of g-C3N4-TiO2 visible active hybrid photocatalyst for the photodegradation of methyl orange

Kuldeep

Dhabbe²,

Garadkar

2021

Res Chem Intermed

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In this paper, we report the synthesis of g-C 3 N 4 -TiO 2 hybrid photocatalyst by using the simple, cost-effective and eco-friendly process. The development of TiO 2 nanoflakes on the surface of g-C 3 N 4 nanosheet was carried out by the in situ sol-gel method. The XRD patterns reveal the anatase phase of TiO 2 in the g-C 3 N 4 -TiO 2 nanocomposite. HR-TEM images confirm the size of the nanoflakes in the range of 15-25 nm. The O-Ti and Ti-O-Ti bridge produces the absorption band from 560 to 710 cm −1 for TiO 2 ; it is due to stretching vibrations and the specific band at 805 cm −1 marks the sym-triazine ring of g-C 3 N 4 . UV-Vis spectra show a redshift from 394 to 471 nm in the nanocomposite concerning a decrease in band gap. From BET, it is seen that the surface area of bare TiO 2 and g-C 3 N 4 -TiO 2 are 66 and 146 m 2 g −1 , respectively. The nanoflakes morphology of g-C 3 N 4 -TiO 2 was confirmed from FE-SEM images. The EDS spectrum confirms C, N, Ti, and O elements which prove the purity of the nanocomposite. The g-C 3 N 4 -TiO 2 (1:4) acquired a noticeable enhancement of photocatalytic activity which is double for methyl orange degradation than TiO 2 .

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MOF-derived TiO₂ modified with g-C₃N₄ nanosheets for enhanced visible-light photocatalytic performance

Abstract: A g-C3N4/TiO2 heterojunction was prepared for the first time using a mechanical agitation method assisted by a template method and a two-step calcination method.

Cited by 29 publications

References 29 publications

Nitrogen and Carbon Nitride-Doped TiO2 for Multiple Catalysis and Its Antimicrobial Activity

Nitrogen and Carbon Nitride-Doped TiO2 for Multiple Catalysis and Its Antimicrobial Activity

Inside‐and‐Out Semiconductor Engineering for CO₂ Photoreduction: From Recent Advances to New Trends

Development of g-C3N4-TiO2 visible active hybrid photocatalyst for the photodegradation of methyl orange

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MOF-derived TiO2 modified with g-C3N4 nanosheets for enhanced visible-light photocatalytic performance

Abstract: A g-C3N4/TiO2 heterojunction was prepared for the first time using a mechanical agitation method assisted by a template method and a two-step calcination method.

Cited by 29 publications

References 29 publications

Nitrogen and Carbon Nitride-Doped TiO2 for Multiple Catalysis and Its Antimicrobial Activity

Nitrogen and Carbon Nitride-Doped TiO2 for Multiple Catalysis and Its Antimicrobial Activity

Inside‐and‐Out Semiconductor Engineering for CO2 Photoreduction: From Recent Advances to New Trends

Development of g-C3N4-TiO2 visible active hybrid photocatalyst for the photodegradation of methyl orange

Contact Info

Product

Resources

About

MOF-derived TiO₂ modified with g-C₃N₄ nanosheets for enhanced visible-light photocatalytic performance

Inside‐and‐Out Semiconductor Engineering for CO₂ Photoreduction: From Recent Advances to New Trends