Polyoxometalates/TiO2 Fenton-like photocatalysts with rearranged oxygen vacancies for enhanced synergetic degradation

An, Xiaoqiang; Tang, Qingwen; Lan, Huachun; Liu, Huijuan; Qu, Jiuhui

doi:10.1016/j.apcatb.2018.11.063

Cited by 97 publications

(44 citation statements)

References 41 publications

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“…For example, Qu and co-workers (2019) successfully synthesized oxygen vacancies (OVs) in TiO 2 using a cyanide-assisted heat-treatment procedure, and demonstrated that the OVs promoted photocatalytic Fenton-like activity of Fe-based polyoxometalates/TiO 2 . Electron spin resonance (ESR) confirmed that OVs on the TiO 2 favored electron transfer from TiO 2 to Fe-POM, resulting in enhanced production of O 2À and OH [21]. developed a low-temperature, vacuum activated method to tune OVs concentrations on BiOCl, and demonstrated that the surface OVs acted as an electron-donor for H 2 O 2 adsorption and dissociation to generate OH via Fenton-like processes [22].…”

Section: Introductionmentioning

confidence: 99%

Sulfur vacancy promoted peroxidase-like activity of magnetic greigite (Fe3S4) for colorimetric detection of serum glucose

Liu

Tian

Mao

et al. 2020

Analytica Chimica Acta

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SVs-rich Fe 3 S 4 nanosheets are synthesized by adjusting ethylene glycol: water ratio. Sulfur vacancies promote the adsorption and decomposition of H 2 O 2 on Fe 3 S 4 surface. A colorimetric assay is constructed using SVs-rich Fe 3 S 4 nanosheets, TMB and glucose. SVs-rich Fe 3 S 4 nanosheets show higher peroxidase-like activity than SVs-poor Fe 3 S 4. A smartphone APP is self-designed for the colorimetric detection of serum glucose.

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Section: Introductionmentioning

confidence: 99%

Sulfur vacancy promoted peroxidase-like activity of magnetic greigite (Fe3S4) for colorimetric detection of serum glucose

Liu

Tian

Mao

et al. 2020

Analytica Chimica Acta

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“…The crystal structure of the particles was further identified by high‐resolution transmission electron microscopy (HRTEM) in Figure 1D. Two sets of intersectant fringes with the lattice spacing of 0.231 and 0.235 nm can be indexed to (112) and (004) planes of anatase TiO 2 , [ 58 ] while no crystal lattice of Ti 3 C 2 MXene was found. [ 53 ]…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic Nitrogen Reduction by Ti₃C₂ MXene Derived Oxygen Vacancy‐Rich C/TiO₂

Qian

Zhao

Dang

et al. 2021

Advanced Sustainable Systems

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In this work, oxygen vacancy‐rich C/TiO2 (OV‐C/TiO2) samples are prepared by a one‐step calcination approach using Ti3C2 MXene as the precursor, and used for the photocatalytic N2 reduction. The NH3 yields of all the prepared OV‐C/TiO2 samples exceed those achieved on commercial anatase TiO2 and P25, with both H2O and CH3OH as the proton sources. Among them, the OV‐C/TiO2‐600 offers the remarkable NH3 synthesis rates, which are 41.00 µmol g−1 h−1 (with H2O as the proton source) and 84.00 µmol g−1 h−1 (with CH3OH as the proton source). The photocurrent and fluorescence spectra show that OV‐C/TiO2‐600 exhibit the highest generation/separation rate and longest lifetime of photocarriers among all the prepared samples. ESR and TPD experiments confirm much more efficient chemisoption of N2 on the surface of the prepared OV‐C/TiO2‐600 than that on the surface of the commercial anatase TiO2. Moreover, DFT calculations further demonstrate that N2 conversion to NH3 through a Gibbs free energy release leading alternating pathway with a low energy barriers, on the oxygen vacancy on TiO2 surface.

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“…The weight loss of 3.29% is ascribed to the loss of the organic [23] does not shift the photocatalytic activity to visible light. However, this purpose has been achieved by the incorporation of a third component together with POMs such as Fe [24], polyethyleneimine [25], and HMT-MB (this work). The findings show that the advantage of the present photocatalyst is the shift of the photocatalytic activity toward the visible region, and hence, it shows the photocatalytic behavior under a visible light source (metal halide lamp) in addition to sunlight.…”

Section: Resultsmentioning

confidence: 99%

Shift the Photocatalytic Activity of P25 TiO2 Nanoparticles toward the Visible Region upon Surface Modification with Organic Hybrid of Phosphotungstate

Taghdiri

Doolabi

2020

International Journal of Photoenergy

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In this study, a visible-light-driven P25 TiO2 was prepared upon surface modification with a colored organic hybrid of phosphotungstic acid that makes titanium dioxide suitable for photocatalytic degradation of organic pollutants under visible and sunlight irradiation. Visible shifting of the photocatalytic activity of surface-modified TiO2 was examined by studying the decolorization of methylene blue (MB) and rhodamine B (RhB). The results show that colored TiO2 is, unlike bare TiO2, a good photocatalyst in the degradation of dyes under visible and sunlight irradiation. Surface-modified Al2O3 and reduced graphene oxide (RGO) with organic hybrid of phosphotungstate failed to degrade RhB under sunlight irradiation, which prove the role of TiO2 in the photochemical process.

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Polyoxometalates/TiO2 Fenton-like photocatalysts with rearranged oxygen vacancies for enhanced synergetic degradation

Cited by 97 publications

References 41 publications

Sulfur vacancy promoted peroxidase-like activity of magnetic greigite (Fe3S4) for colorimetric detection of serum glucose

Sulfur vacancy promoted peroxidase-like activity of magnetic greigite (Fe3S4) for colorimetric detection of serum glucose

Photocatalytic Nitrogen Reduction by Ti₃C₂ MXene Derived Oxygen Vacancy‐Rich C/TiO₂

Shift the Photocatalytic Activity of P25 TiO2 Nanoparticles toward the Visible Region upon Surface Modification with Organic Hybrid of Phosphotungstate

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Polyoxometalates/TiO2 Fenton-like photocatalysts with rearranged oxygen vacancies for enhanced synergetic degradation

Cited by 97 publications

References 41 publications

Sulfur vacancy promoted peroxidase-like activity of magnetic greigite (Fe3S4) for colorimetric detection of serum glucose

Sulfur vacancy promoted peroxidase-like activity of magnetic greigite (Fe3S4) for colorimetric detection of serum glucose

Photocatalytic Nitrogen Reduction by Ti3C2 MXene Derived Oxygen Vacancy‐Rich C/TiO2

Shift the Photocatalytic Activity of P25 TiO2 Nanoparticles toward the Visible Region upon Surface Modification with Organic Hybrid of Phosphotungstate

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Photocatalytic Nitrogen Reduction by Ti₃C₂ MXene Derived Oxygen Vacancy‐Rich C/TiO₂