Construction of Z-scheme MoSe2/CdSe hollow nanostructure with enhanced full spectrum photocatalytic activity

Wang, Ying; Zhao, Jingxiang; Chen, Zhe; Zhang, Feng; Guo, Wei; Lin, Huiming; Qu, Fengyu

doi:10.1016/j.apcatb.2018.11.033

Cited by 129 publications

(24 citation statements)

References 79 publications

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“…The HRTEM image (Fig. 2e and f) present the d-spacing of 0.65 and 0.24 nm, assigning to the (002) and (103) lattice planes of 2H-MoSe 2 (JCPDS: 29-0914), respectively 31 . Figure 2g is the SEM image of S v -ZIS/MoSe 2 , which exhibits almost the same morphology with ZIS, moreover, the ZIS and MoSe 2 in the S v -ZIS/MoSe 2 structure are undistinguishable, indicating that the MoSe 2 was grown on the surface of ZIS intimately to form a 2D/2D contact, and the introduction of MoSe 2 can hardly affect the hierarchical microsphere morphology of ZIS.…”

Section: Resultsmentioning

confidence: 97%

Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

et al. 2021

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Construction of Z-scheme heterostructure is of great significance for realizing efficient photocatalytic water splitting. However, the conscious modulation of Z-scheme charge transfer is still a great challenge. Herein, interfacial Mo-S bond and internal electric field modulated Z-scheme heterostructure composed by sulfur vacancies-rich ZnIn2S4 and MoSe2 was rationally fabricated for efficient photocatalytic hydrogen evolution. Systematic investigations reveal that Mo-S bond and internal electric field induce the Z-scheme charge transfer mechanism as confirmed by the surface photovoltage spectra, DMPO spin-trapping electron paramagnetic resonance spectra and density functional theory calculations. Under the intense synergy among the Mo-S bond, internal electric field and S-vacancies, the optimized photocatalyst exhibits high hydrogen evolution rate of 63.21 mmol∙g−1·h−1 with an apparent quantum yield of 76.48% at 420 nm monochromatic light, which is about 18.8-fold of the pristine ZIS. This work affords a useful inspiration on consciously modulating Z-scheme charge transfer by atomic-level interface control and internal electric field to signally promote the photocatalytic performance.

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Section: Resultsmentioning

confidence: 97%

Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

et al. 2021

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“…Besides adsorption separation [ 2 , 3 , 4 , 5 ], the Fenton reaction has been extensively explored in the field of the removal of hazardous organic pollutants in water, which can directly degrade the contaminant into harmless inorganic salts, water, or carbon dioxide [ 6 ]. Most of this research about the photo-Fenton reaction for organic pollutants is mainly focused on UV and visible light; however, 54% of the solar spectrum is near-infrared (NIR) light, which is rarely utilized [ 7 ]. Generally, common materials with photothermal effects include noble metals, organic compounds, carbon-based materials, aluminum nanoparticles, metallic oxide, and metal sulfide [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

et al. 2021

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Photothermal materials are attracting more and more attention. In this research, we synthesized a ferrocene-containing polymer with magnetism and photothermal properties. The resulting polymer was characterized by Fourier-transform infrared (FT-IR), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Its photo-thermocatalytic activity was investigated by choosing methylene blue (MB) as a model compound. The degradation percent of MB under an irradiated 808 nm laser reaches 99.5% within 15 min, and the degradation rate is 0.5517 min−1, which is 145 times more than that of room temperature degradation. Under irradiation with simulated sunlight, the degradation rate is 0.0092 min−1, which is approximately 2.5 times more than that of room temperature degradation. The present study may open up a feasible route to degrade organic pollutants.

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“…It can be found that the intensity of TiO 2 NFs/MoSe 2 is much weaker than the pure TiO 2 sample and the TiO 2 NFs/MoSe 2 ‐15 sample exhibits the weakest PL intensity, which further confirms that the recombination of photo‐induced electrons and holes in TiO 2 NFs/MoSe 2 ‐15 can be effectively inhibited. In addition, MoSe2 possesses very high anti‐photocorrosion stability due to the fact that the optical transitions are between nonbonding metal d states . So, higher photocurrent density is expected for the hybridized TiO 2 NFs/MoSe 2 .…”

Section: Resultsmentioning

confidence: 99%

“…24 Meanwhile, the unsaturated Se atoms at the edge and those at defective points exhibit excellent catalytic activity during HER process. 25,26 Moreover the band structure of MoSe 2 can be tuned with band gap value as high as 1.7-1.9 eV, [27][28][29][30] which allows the wide visible light response and effectively extends the light absorption region. 31,32 Such characteristics of MoSe 2 render it an ideal catalyst for HERs with high current density.…”

Section: Introductionmentioning

confidence: 99%

Mixed 3D/2D dimensional TiO₂ nanoflowers/MoSe₂ nanosheets for enhanced photoelectrochemical hydrogen generation

Yang

Wang

et al. 2019

J Am Ceram Soc

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Recently, various kinds of methods have been implemented to broaden the visible light response and fasten the carrier's separation of TiO2‐based photoanodes. As a promising hydrogen evolution reaction catalyst, MoSe2 is rarely investigated especially combined with TiO2 photoanode. In this study, we report a composite photoanode of MoSe2 nanosheets (with 1T and 2H phase)‐modified 3D TiO2 nanoflowers (NFs).The hybrid of 3D TiO2 NFs/2D MoSe2 holds great promise in boosting the PEC water splitting performance. TiO2 NFs/MoSe2‐15 showed the largest photocurrent density of 1.40 mA/cm2, which was five times higher than that of pure TiO2 NFs under AM1.5G illumination. Moreover 10 times improvement in current density was observed for the TiO2 NFs/MoSe2‐15 under visible light. This increase could be ascribed to synergistic effects of light absorption enhancement and more efficient carrier separation after MoSe2 modification. This study not only provides a reference to boost the photoelectrochemical performance of photoelectrodes but also renders a perspective on the potential applications of MoSe2 nanosheets.

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Construction of Z-scheme MoSe2/CdSe hollow nanostructure with enhanced full spectrum photocatalytic activity

Cited by 129 publications

References 79 publications

Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

Mixed 3D/2D dimensional TiO₂ nanoflowers/MoSe₂ nanosheets for enhanced photoelectrochemical hydrogen generation

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Construction of Z-scheme MoSe2/CdSe hollow nanostructure with enhanced full spectrum photocatalytic activity

Cited by 129 publications

References 79 publications

Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

Mixed 3D/2D dimensional TiO2 nanoflowers/MoSe2 nanosheets for enhanced photoelectrochemical hydrogen generation

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Mixed 3D/2D dimensional TiO₂ nanoflowers/MoSe₂ nanosheets for enhanced photoelectrochemical hydrogen generation