Atypical BiOCl/Bi2S3 hetero-structures exhibiting remarkable photo-catalyst response

Tanveer, Muhammad; Wu, Yu; Qadeer, M. A.; Cao, Chuanbao

doi:10.1007/s40843-017-9135-y

Cited by 18 publications

(9 citation statements)

References 51 publications

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“…The redshift of absorption edge is beneficial for utilizing the visible light. The bandgap energy ( E g ) can be calculated on the basis of the ultraviolet–visible diffuse reflectance spectra . The bandgap of In 2 O 3 –ZISe ultrathin nanosheets (inset of Figure d) is calculated to be about 2.73 eV, much narrower than that of In 2 O 3 (2.98 eV), being in agreement with the DFT calculation result.…”

supporting

confidence: 78%

Ultrathin Visible‐Light‐Driven Mo Incorporating In₂O₃–ZnIn₂Se₄ Z‐Scheme Nanosheet Photocatalysts

et al. 2018

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Inspired by natural photosynthesis, the design of new Z‐scheme photocatalytic systems is very promising for boosting the photocatalytic performance of H2 production and CO2 reduction; however, until now, the direct synthesis of efficient Z‐scheme photocatalysts remains a grand challenge. Herein, it is demonstrated that an interesting Z‐scheme photocatalyst can be constructed by coupling In2O3 and ZnIn2Se4 semiconductors based on theoretical calculations. Experimentally, a class of ultrathin In2O3–ZnIn2Se4 (denoted as In2O3–ZISe) spontaneous Z‐scheme nanosheet photocatalysts for greatly enhancing photocatalytic H2 production is made. Furthermore, Mo atoms are incorporated in the Z‐scheme In2O3–ZISe nanosheet photocatalyst by forming the MoSe bond, confirmed by X‐ray photoelectron spectroscopy, in which the formed MoSe2 works as cocatalyst of the Z‐scheme photocatalyst. As a consequence, such a unique structure of In2O3–ZISe–Mo makes it exhibit 21.7 and 232.6 times higher photocatalytic H2 evolution activity than those of In2O3–ZnIn2Se4 and In2O3 nanosheets, respectively. Moreover, In2O3–ZISe–Mo is also very stable for photocatalytic H2 production by showing almost no activity decay for 16 h test. Ultraviolet–visible diffuse reflectance spectra, photoluminescence spectroscopy, transient photocurrent spectra, and electrochemical impedance spectroscopy reveal that the enhanced photocatalytic performance of In2O3–ZISe–Mo is mainly attributed to its widened photoresponse range and effective carrier separation because of its special structure.

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confidence: 78%

Ultrathin Visible‐Light‐Driven Mo Incorporating In₂O₃–ZnIn₂Se₄ Z‐Scheme Nanosheet Photocatalysts

et al. 2018

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“…However, most of the conventional treatments for environment remediation were found inefficient and may cause secondary pollution. In recent years, sunlight-driven photocatalysis technology is considered to be a green, effective and economic method to handle the removal of environmental pollutions [182][183][184][185][186][187]. To date, tremendous efforts have been contributed to developing efficient photocatalysts to match the requirements of practical application [188][189][190][191].…”

Section: Removal Of Pollutionsmentioning

confidence: 99%

2D/2D heterostructured photocatalyst: Rational design for energy and environmental applications

2020

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Two-dimensional/two-dimensional (2D/2D) hybrid nanomaterials have triggered extensive research in the photocatalytic field. The construction of emerging 2D/2D heterostructures can generate many intriguing advantages in exploring high-performance photocatalysts, mainly including preferable dimensionality design allowing large contact interface area, integrated merits of each 2D component and rapid charge separation by the heterojunction effect. Herein, we provide a comprehensive review of the recent progress on the fundamental aspects, general synthesis strategies (in situ growth and ex situ assembly) of 2D/2D heterostructured photocatalysts and highlight their applications in the fields of hydrogen evolution, CO 2 reduction and removal of pollutants. Furthermore, the perspectives on the remaining challenges and future opportunities regarding the development of 2D/2D heterostructure photocatalysts are also presented.

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“…The influence of shape on the photocatalytic activity of BiOCl for the degradation of toxic bisphenol A was tested for microplates and microflowers, and it was confirmed that the higher adsorption capacity and presence of more active sites in the microflowers enhanced their photocatalytic activity 10 . Other BiOCl-based nanostructures such as BiOCl/Bi 2 S 3 , BiOCl/(BiO) 2 CO 3 , and BiOCl/g-C 3 N 4 heterostructures are also good photocatalysts [11][12][13] .…”

Section: Broadband Dielectric Spectroscopy For Monitoring Temperaturementioning

confidence: 99%

Broadband dielectric spectroscopy for monitoring temperature-dependent chloride ion motion in BiOCl plates

Radoń

Łukowiec

Włodarczyk

2020

Sci Rep

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The dielectric properties and electrical conduction mechanism of bismuth oxychloride (BiOCl) plates synthesized using chloramine-T as the chloride ion source were investigated. Thermally-activated structure rebuilding was monitored using broadband dielectric spectroscopy, which showed that the onset temperature of this process was 283 K. This rebuilding was related to the introduction of free chloride ions into [Bi2O2]2+ layers and their growth, which increased the intensity of the (101) diffraction peak. The electrical conductivity and dielectric permittivity were related to the movement of chloride ions between plates (in the low-frequency region), the interplanar motion of Cl− ions at higher frequencies, vibrations of these ions, and charge carrier hopping at frequencies above 10 kHz. The influence of the free chloride ion concentration on the electrical conductivity was also described. Structure rebuilding was associated with a lower concentration of free chloride ions, which significantly decreased the conductivity. According to the analysis, the BiOCl plate conductivity was related to the movement of Cl− ions, not electrons.

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Atypical BiOCl/Bi2S3 hetero-structures exhibiting remarkable photo-catalyst response

Cited by 18 publications

References 51 publications

Ultrathin Visible‐Light‐Driven Mo Incorporating In₂O₃–ZnIn₂Se₄ Z‐Scheme Nanosheet Photocatalysts

Ultrathin Visible‐Light‐Driven Mo Incorporating In₂O₃–ZnIn₂Se₄ Z‐Scheme Nanosheet Photocatalysts

2D/2D heterostructured photocatalyst: Rational design for energy and environmental applications

Broadband dielectric spectroscopy for monitoring temperature-dependent chloride ion motion in BiOCl plates

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Atypical BiOCl/Bi2S3 hetero-structures exhibiting remarkable photo-catalyst response

Cited by 18 publications

References 51 publications

Ultrathin Visible‐Light‐Driven Mo Incorporating In2O3–ZnIn2Se4 Z‐Scheme Nanosheet Photocatalysts

Ultrathin Visible‐Light‐Driven Mo Incorporating In2O3–ZnIn2Se4 Z‐Scheme Nanosheet Photocatalysts

2D/2D heterostructured photocatalyst: Rational design for energy and environmental applications

Broadband dielectric spectroscopy for monitoring temperature-dependent chloride ion motion in BiOCl plates

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Product

Resources

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Ultrathin Visible‐Light‐Driven Mo Incorporating In₂O₃–ZnIn₂Se₄ Z‐Scheme Nanosheet Photocatalysts

Ultrathin Visible‐Light‐Driven Mo Incorporating In₂O₃–ZnIn₂Se₄ Z‐Scheme Nanosheet Photocatalysts