Synthesis, characterization, and photocurrent generation of a new nanocomposite based Cu–TCPP MOF and ZnO nanorod

To use the visible light in photodegradation reactions efficiently, graphene–TiO2 nanocomposite was photosensitized using tetrakis(4‐carboxyphenyl)porphyrin. To investigate the effect of graphene as well as dye sensitization on the photoactivity of the synthesized photocatalyst, photocatalytic properties and photocurrent responses of the prepared samples were examined under visible light irradiation. A twofold increase of photocurrent response in the TG nanocomposite photosensitized with porphyrin (TGP) compared to TG (3%) nanocomposite provides an evidence of the effective influence of the porphyrin photosensitizer in the visible light photoactivity enhancement. There is a complete correspondence between the photocatalytic activity and photocurrent response of the photocatalysts. The photocatalytic properties of the photocatalysts were carried out in the degradation of methyl orange and bisphenol A under visible light irradiation. It was determined that TGP compound was stable after photocatalytic process and degraded 93% of methyl orange and 85% of bisphenol A in 240 min under visible light irradiation. Furthermore, the mechanism of investigation of the photocatalytic process determines that normalO2bold.− and OH. are the main reactive species for degradation of methyl orange and bisphenol A over the TGP compound under visible light irradiation. © 2015 American Institute of Chemical Engineers Environ Prog, 35: 642–652, 2016

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“…The cycle is continued by the reduction of O 2 at the interface and by transfer of electrons from the reduced O 2 (

{normalO}_{2}^{-}

) to the porphyrin cation in TGP. Therefore, the ground state of porphyrin is recovered .…”

Section: Resultsmentioning

confidence: 99%

Investigation of the synergistic effect of porphyrin photosensitizer on graphene–TiO₂ nanocomposite for visible light photoactivity improvement

Rahimi

Zargari

Ghaffarinejad

et al. 2015

Env Prog and Sustain Energy

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“…Compared to conventional light-harvesting organic polymers, MOFs possess long-range order and are comprised of metal ions or clusters that are connected by electron-donating ''linker'' groups to create a networked structure with well-defined pores. [26][27][28] In conclusion, we have synthesized a photoconductive Cd(II)-MOF which has two band gaps as demonstrated both from experimental measurements and DFT calculations. The synthesized complex exhibits strong absorbance in the wavelength range of 345-390 nm, which predicts some impact of incident radiation on the charge transport phenomena.…”

mentioning

confidence: 80%

Application of a novel 2D cadmium(ii)-MOF in the formation of a photo-switch with a substantial on–off ratio

et al. 2015

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A novel thiocyanate bridged 2D MOF, [CdL(μ-1,3-SCN)2]n, [HL = 2-(2-(ethylamino)ethyliminomethyl)-6-ethoxyphenol] has been synthesized and characterized by X-ray crystallography. The band gap of the synthesized material in the solid state has been determined by experimental measurements and compared with the theoretical value obtained from DFT calculations. For the first time, the single crystal X-ray crystallography of a MOF has been reported along with its applicability in photosensitive devices.

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“…According to our finding about porphyrin based MOF in the previous work and as can be seen in the DRS spectra of TGSP, it is found that the highly efficient light-harvesting structure of the SnTCPP pillared TG composite can be attributed to densely embedded porphyrin chromophores with high visible absorptivity within the framework [23]. The excited electrons of SnTCPP transfer from SnTCPP to TiO 2 through the bond between the tin atom and the hydroxyl group of TiO 2 surface.…”

Section: Description Of Photocatalytic Activitymentioning

confidence: 92%

Preparation of a Photoactive 3D Polymer Pillared with Metalloporphyrin

Zargari¹,

Rahimi²,

A³

2017

J Material Sci Eng

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Among the very few efforts for the preparation of stable pillared graphene nanostructures, there is no report of tin porphyrin intercalated between TiO 2 -graphene (TG) nanosheets. In this study, a nanostructure material of pillared graphene made of tin porphyrin functionalized graphene-TiO 2 composite (TG) was successfully synthesized. The prepared compound showed high activity in the photodegradation reaction under irradiation of visible light.Photocatalytic results showed that the composite of graphene-TiO 2 containing 3% graphene had the highest photoactivity. The photoactivity of TG (3%) was about 1.5 times higher than that of the pure TiO 2 .Besides, tin porphyrin-pillared TG composite (TGSP) material exhibited an excellent visible light photocatalytic performance in degradation of methyl orange dye. This compound could destruct 100% of methyl orange dye in 180 min. Such pillared carbon nanostructure exhibited unique photoactivity due to the synergistic effect between the graphene sheets and the SnTCPP pillars. It is found that the highly efficient light-harvesting structure of the SnTCPP pillared TG composite can be attributed to densely embedded porphyrin chromophores with high visible absorptivity within the framework. The investigation of photocatalytic mechanism determined that hydroxyl radical is a main species in photodegradation process of methyl orange over TGSP compound.

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Synthesis, characterization, and photocurrent generation of a new nanocomposite based Cu–TCPP MOF and ZnO nanorod

Abstract: Schematic representation of the Cu–TCPP MOF/ZnO (15%) nanocomposite on an FTO substrate in the photoelectrochemical cell and the mechanism of the photocurrent generation (the chemical potentials were calculated by cyclic voltammetry measurement).

Cited by 78 publications

References 48 publications

Investigation of the synergistic effect of porphyrin photosensitizer on graphene–TiO₂ nanocomposite for visible light photoactivity improvement

Investigation of the synergistic effect of porphyrin photosensitizer on graphene–TiO₂ nanocomposite for visible light photoactivity improvement

Application of a novel 2D cadmium(ii)-MOF in the formation of a photo-switch with a substantial on–off ratio

Preparation of a Photoactive 3D Polymer Pillared with Metalloporphyrin

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Synthesis, characterization, and photocurrent generation of a new nanocomposite based Cu–TCPP MOF and ZnO nanorod

Abstract: Schematic representation of the Cu–TCPP MOF/ZnO (15%) nanocomposite on an FTO substrate in the photoelectrochemical cell and the mechanism of the photocurrent generation (the chemical potentials were calculated by cyclic voltammetry measurement).

Cited by 78 publications

References 48 publications

Investigation of the synergistic effect of porphyrin photosensitizer on graphene–TiO2 nanocomposite for visible light photoactivity improvement

Investigation of the synergistic effect of porphyrin photosensitizer on graphene–TiO2 nanocomposite for visible light photoactivity improvement

Application of a novel 2D cadmium(ii)-MOF in the formation of a photo-switch with a substantial on–off ratio

Preparation of a Photoactive 3D Polymer Pillared with Metalloporphyrin

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Resources

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Investigation of the synergistic effect of porphyrin photosensitizer on graphene–TiO₂ nanocomposite for visible light photoactivity improvement

Investigation of the synergistic effect of porphyrin photosensitizer on graphene–TiO₂ nanocomposite for visible light photoactivity improvement