Visible light active Ag, N co-doped titania in the photo-oxidation of some 9-(N,N-dimethylaminomethyl)anthracene systems

Mothi, Krishna Mohan; Soumya, G.; Salim, Agus; Sugunan, S.

doi:10.1007/s10971-014-3389-2

Cited by 8 publications

(5 citation statements)

References 18 publications

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“…A slight change in the binding energy values of Ce3d levels can be ascribed to the chemical interactions of cerium oxide between Bi 2 O 3 and gC 3 N 4 in the composite. The results confirm that cerium oxide was partially reduced from Ce 4+ to Ce 3+ due to the chemical environment that favors electron transfer 29 …”

Section: Resultssupporting

confidence: 58%

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Synthesis and characterization of CeO₂/Bi₂O₃/gC₃N₄ ternary Z‐scheme nanocomposite

Devi

Mathew

Rajan

et al. 2020

Int J Applied Ceramic Tech

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An effective and facile phytogenic method was used to prepare CeO2/Bi2O3 and CeO2/Bi2O3/gC3N4 composites using Eichhornia crassipes phytoextract. The synthesized catalysts were characterized using techniques such as XRD, FTIR, UV‐DRS, PL, SEM‐EDAX, XPS, zeta potential, and TGA. These catalysts showed diverse photocatalytic and optical properties due to the alteration in the bandgap. The synthesized composites exhibited good photocatalytic activity by degrading Malachite green (MG) dye. The increase in the photocatalytic activity could be attributed to the p‐n heterojunction of the catalysts with efficient charge separation and strong oxidative ability. The modified photocatalysts showed excellent catalytic activity and reusability under visible light. The superior efficiency and its applications in environmental remediation make these catalysts a potential candidate for photocatalysis.

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Section: Resultssupporting

confidence: 58%

“…The dominant O1s peak at 528.5 eV in Figure 7D can be due to the oxygen attached to ceria (Ce–O) and bismuth oxide (Bi‐O). A shoulder peak at 530.4 eV can be attributed to the surface hydroxyl groups 29 . The prominent C1s peak at 284.4 eV (Figure 7E) represents graphitic C–C bond.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of CeO₂/Bi₂O₃/gC₃N₄ ternary Z‐scheme nanocomposite

Devi

Mathew

Rajan

et al. 2020

Int J Applied Ceramic Tech

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“…It is due to the present of nitrogen atom in TiO 2 lattice structure. The nitrogen doping in the TiO 2 lattice structure could enhance the absorption capability in visible light irradiation [34,36,[44][45][46][47].…”

Section: Photocatalytic Activity Measurementmentioning

confidence: 99%

Structural characterization of N-doped anatase–rutile mixed phase TiO2 nanorods assembled microspheres synthesized by simple sol–gel method

Mohamed

Salleh

Jaafar

et al. 2015

J Sol-Gel Sci Technol

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In this study, N-doped anatase-rutile mixed phase TiO 2 nanorods assembled microspheres were synthesized via a direct and simple sol-gel method. The physical analysis via X-ray diffraction indicated that the prepared sample had a mixed phase of anatase and rutile TiO 2 . The morphology of the structure was observed with field emission scanning electron microscopy, transmission electron microscopy and atomic force microscopy, which showed that the formation of TiO 2 microspheres was constructed by TiO 2 nanorods or rice like structure nanorods. Besides, Fourier transform infrared analysis revealed that the presence of N 2 O 2 2-and NO -species in the spectra while XPS study indicated the incorporation of nitrogen as dopant in TiO 2 at binding energies of 396.8, 397.5, 398.7, and 399.8 eV. Furthermore, the optical properties determined by UV-Vis spectroscopy concluded that the prepared sample exhibited excellent optical responses to UV and visible region as well as being a potential material for degradation of hazardous water pollutants. The photocatalytic activity of the prepared TiO 2 exhibits excellent photodegradation of methylene blue under UV and visible light irradiation. Graphical AbstractKeywords N-doped TiO 2 nanorods Á Anatase/Rutile Á UV-visible irradiation Á Sol-gel preparation Á Structural characterization 1 Introduction

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“…Recently, the concept of second-generation TiO 2 -based materials has been introduced, wherein codoping with two dopant elements produces a synergistic effect to enhance the visible-light absorption efficiency and reduce the recombination processes of the photogenerated charges [ 21 – 24 ]. A Ag/N-codoped TiO 2 system was prepared using a sonication-assisted sol-gel method by Mothi et al [ 25 ] who found that the system was highly active for the photoconversion of 9-(N,N-dimethylaminomethyl) anthracene.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Visible-Light-Responsive Cu and N-Codoped AC/TiO2 Photocatalyst Through Microwave Irradiation

Tian

Yan

et al. 2016

Nanoscale Res Lett

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N–Cu-activated carbon (AC)/TiO2 nanoparticles were prepared by the sol-gel technique through microwave irradiation to modify the visible-light response of TiO2. Their structure, surface chemical composition, and optical absorption properties were characterized. The results showed that the codoped particles had a higher surface area and smaller particle size than pure AC/TiO2 and monodoped AC/TiO2. X-ray photoelectron spectroscopy of N–Cu-AC/TiO2 showed that Cu atoms replaced Ti atom sites, whereas N atoms occupied the O atom sites and interstitial sites in the TiO2 lattice, which changed the electric and band-gap structures of the photocatalyst. N or Cu monodoping of AC/TiO2 reduced the energy band gap of TiO2 from 2.86 eV to 2.81 or 2.61 eV, respectively. In (N, Cu)-codoped AC/TiO2, N and Cu were incorporated into the TiO2 framework and narrowed the band gap of TiO2 to 2.47 eV, causing a large red shift and enhancing visible-light utilization efficiency. Photocatalytic activities were further examined by formaldehyde degradation under visible-light irradiation. N–Cu-AC/TiO2 was found to have the highest activity (ca. 94.4 % formaldehyde degradation efficiency) and to be easily recyclable. These results show an important and innovative method of improving AC/TiO2 activity by modifying the nonmetallic and metallic species.

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Visible light active Ag, N co-doped titania in the photo-oxidation of some 9-(N,N-dimethylaminomethyl)anthracene systems

Cited by 8 publications

References 18 publications

Synthesis and characterization of CeO₂/Bi₂O₃/gC₃N₄ ternary Z‐scheme nanocomposite

Synthesis and characterization of CeO₂/Bi₂O₃/gC₃N₄ ternary Z‐scheme nanocomposite

Structural characterization of N-doped anatase–rutile mixed phase TiO2 nanorods assembled microspheres synthesized by simple sol–gel method

Synthesis of Visible-Light-Responsive Cu and N-Codoped AC/TiO2 Photocatalyst Through Microwave Irradiation

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Visible light active Ag, N co-doped titania in the photo-oxidation of some 9-(N,N-dimethylaminomethyl)anthracene systems

Cited by 8 publications

References 18 publications

Synthesis and characterization of CeO2/Bi2O3/gC3N4 ternary Z‐scheme nanocomposite

Synthesis and characterization of CeO2/Bi2O3/gC3N4 ternary Z‐scheme nanocomposite

Structural characterization of N-doped anatase–rutile mixed phase TiO2 nanorods assembled microspheres synthesized by simple sol–gel method

Synthesis of Visible-Light-Responsive Cu and N-Codoped AC/TiO2 Photocatalyst Through Microwave Irradiation

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Synthesis and characterization of CeO₂/Bi₂O₃/gC₃N₄ ternary Z‐scheme nanocomposite

Synthesis and characterization of CeO₂/Bi₂O₃/gC₃N₄ ternary Z‐scheme nanocomposite