Phosphorus-doped molybdenum disulfide facilitating the photocatalytic hydrogen production activity of CdS nanorod

Xu, Meiling; Tang, Xiu; Wang, Yanju; Liu, Futian; Zhang, Yuzhuo; Li, Kui

doi:10.1039/c9nj00411d

Cited by 9 publications

(5 citation statements)

References 32 publications

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“…The Cd 3 d 3/2 peak at 411.54 eV had atomic content of 21.58% before bio-sorption. The weaker P 2 p 1/2 peaks at 131.99 eV, 134.39 eV, 138.05 eV, 139.46 eV, 139.95 eV, and 144.32 eV correspond to P–O–C or P–O species before bio-sorption 90 . The occurrence of the P 2 p peaks at 136.50 eV and 139.46 eV corresponds to the formation of phosphorous-Cd 2+ ions after adsorption 90 .…”

Section: Resultsmentioning

confidence: 99%

“…The weaker P 2 p 1/2 peaks at 131.99 eV, 134.39 eV, 138.05 eV, 139.46 eV, 139.95 eV, and 144.32 eV correspond to P–O–C or P–O species before bio-sorption 90 . The occurrence of the P 2 p peaks at 136.50 eV and 139.46 eV corresponds to the formation of phosphorous-Cd 2+ ions after adsorption 90 . The biogeochemistry of heavy metals can easily be understood from the binding mechanisms of Cd 2+ ion by the resistant strain Candida tropicalis XTA1874.…”

Section: Resultsmentioning

confidence: 99%

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Unlocking Cd(II) biosorption potential of Candida tropicalis XTA 1874 for sustainable wastewater treatment

Bhattacharyya,

Bhattacharjee,

Sen

et al. 2024

Sci Rep

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Cd(II) is a potentially toxic heavy metal having carcinogenic activity. It is becoming widespread in the soil and groundwater by various natural and anthropological activities. This is inviting its immediate removal. The present study is aimed at developing a Cd(II) resistant strain isolated from contaminated water body and testing its potency in biological remediation of Cd(II) from aqueous environment. The developed resistant strain was characterized by SEM, FESEM, TEM, EDAX, FT-IR, Raman Spectral, XRD and XPS analysis. The results depict considerable morphological changes had taken place on the cell surface and interaction of Cd(II) with the surface exposed functional groups along with intracellular accumulation. Molecular contribution of critical cell wall component has been evaluated. The developed resistant strain had undergone Cd(II) biosorption study by employing adsorption isotherms and kinetic modeling. Langmuir model best fitted the Cd(II) biosorption data compared to the Freundlich one. Cd(II) biosorption by the strain followed a pseudo second order kinetics. The physical parameters affecting biosorption were also optimized by employing response surface methodology using central composite design. The results depict remarkable removal capacity 75.682 ± 0.002% of Cd(II) by the developed resistant strain from contaminated aqueous medium using 500 ppm of Cd(II). Quantitatively, biosorption for Cd(II) by the newly developed resistant strain has been increased significantly (p < 0.0001) from 4.36 ppm (non-resistant strain) to 378.41 ppm (resistant strain). It has also shown quite effective desorption capacity 87.527 ± 0.023% at the first desorption cycle and can be reused effectively as a successful Cd(II) desorbent up to five cycles. The results suggest that the strain has considerable withstanding capacity of Cd(II) stress and can be employed effectively in the Cd(II) bioremediation from wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Unlocking Cd(II) biosorption potential of Candida tropicalis XTA 1874 for sustainable wastewater treatment

Bhattacharyya,

Bhattacharjee,

Sen

et al. 2024

Sci Rep

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“…To date, many metal sulfides, such as MoS2 [30,[184][185][186][187][188], NiS [45,51,184,189], CuxS [190][191][192][193][194][195][196], Co3S4 [197], FeS [198], Ag2S [199], Bi2S3 [200], WS2 [201], Co3Mo7S [15] and NiMoS [202,203], have been reported in photocatalytic H2 evolution reaction. MoS2 is an efficient cocatalyst on variety of semiconductor photocatalysts.…”

Section: Metal Sulfidesmentioning

confidence: 99%

“…Very recently, Xu et al [188] found that MoS2 could be facilely modulated through phosphorus doping, which can act as a cocatalyst and embedded onto the CdS nanorod for not only facilitating the separation of the charge carriers, but also promoting the separation efficiency of the charge carriers. The 3 wt.% CdS/P-MoS2 sample exhibited a higher photocatalytic hydrogen evolution rate of 8.86 mmol•h -1 •g -1 with the AQY of 32.4% at 420 nm.…”

Section: Metal Sulfidesmentioning

confidence: 99%

The roles and mechanism of cocatalysts in photocatalytic water splitting to produce hydrogen

Xiao

et al. 2020

Chinese Journal of Catalysis

198

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“…Renewable hydrogen generation from photocatalytic water splitting has been reckoned as a green and effective development strategy to alleviate the environmental pollutant and energy crisis. − A large number of semiconductors such as TiO 2 , CdS, carbon nitride, metal–organic frameworks (MOFs), and so on. have been reported for hydrogen generation .…”

Section: Introductionmentioning

confidence: 99%

Self-Assembled Zeolitic Imidazolate Framework/CdS Hollow Microspheres with Efficient Charge Separation for Enhanced Photocatalytic Hydrogen Evolution

Zhang

Liu

et al. 2022

Inorg. Chem.

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Enhanced interfacial charge separation is of great importance to high-efficiency photocatalytic hydrogen production. Herein, we successfully fabricated novel ZIF-67/CdS hollow sphere (HS) and ZIF-8/CdS HS heterostructures through an in situ self-assembly process, in which ZIF-67 and ZIF-8 are closely coated on CdS HSs to form “double-shell”-like structures. This hierarchical heterostructure with porous outer layers on the surface of CdS HSs can expose accessible active sites and possess close contact. Upon visible-light illumination, the optimal proportion of ZIF-67/CdS HS displays a hydrogen generation rate of 1721 μmol g–1 h–1, which is 11.9 and 3.1 times higher than that of a pure CdS HS (145 μmol g–1 h–1) and ZIF-8/CdS HS (555 μmol g–1 h–1), respectively. The proposed photocatalytic mechanism is explored: ZIF-8/CdS HS follows the type-II mechanism, and ZIF-67/CdS HS follows the Z-scheme mechanism. The reason for the higher photocatalytic activity of ZIF-67/CdS HS is that ZIF-67 not merely with a porous structure facilitates the diffusion of H2 gas, but with a well-matched band structure promotes charge transfer and separation.

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Phosphorus-doped molybdenum disulfide facilitating the photocatalytic hydrogen production activity of CdS nanorod

Abstract: Phosphorus doping could modulate the band structure and hydrogen evolution reaction over potential, and bring about the excellent photocatalytic hydrogen evolution activity of CdS/P-MoS2.

Cited by 9 publications

References 32 publications

Unlocking Cd(II) biosorption potential of Candida tropicalis XTA 1874 for sustainable wastewater treatment

Unlocking Cd(II) biosorption potential of Candida tropicalis XTA 1874 for sustainable wastewater treatment

The roles and mechanism of cocatalysts in photocatalytic water splitting to produce hydrogen

Self-Assembled Zeolitic Imidazolate Framework/CdS Hollow Microspheres with Efficient Charge Separation for Enhanced Photocatalytic Hydrogen Evolution

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