Synergetic effect of ZnIn2S4 nanosheets with metal-organic framework molding heterostructure for efficient visible- light driven photocatalytic reduction of Cr(VI)

Hussain, Muhammad Bilal; Azhar, Umair; Loussala, Herman Maloko; Razaq, Rameez

doi:10.1016/j.arabjc.2020.04.029

Cited by 27 publications

(7 citation statements)

References 45 publications

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“…In addition, other 3D-2D core-shell structure MOFs octahedral@ZnIn 2 S 4 nanosheets nanocomposites have dem onstrated photocatalytic energy and environmental applica tions, such as NH 2 MIL125(Ti)@ZnIn 2 S 4 for photocatalytic H 2 evolution, [231] and UiO66NH 2 @ZnIn 2 S 4 for Cr (VI) reduction. [232] Thereafter, Yuan et al [233] designed and synthesized a 1D-2D core-shell structure MIL88A(Fe)@ZnIn 2 S 4 nanocomposite via a onestep lowtemperature solvothermal process, during which ZnIn 2 S 4 nanosheets were uniformly grown on the surface of 2D MIL88A(Fe) microrods. The synthesized MIL88A(Fe)@ ZnIn 2 S 4 nanocomposites exhibited remarkable enhancement for the photocatalytic reduction of hexavalent chromium (Cr (VI)) and degradation of sulfamethoxazole (SMZ), with 100% and 96% conversion ratio within 9 and 60 min, respectively.…”

Section: Znin 2 S 4 -Mofs Binary Heterojunctionmentioning

confidence: 99%

ZnIn₂S₄‐Based Photocatalysts for Energy and Environmental Applications

et al. 2021

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Figure 4. a) Schematic depiction of the proposed growth mechanism for ZnIn 2 S 4 nanotubes and nanoribbons. b, c) Schematic illustration of the possible growth mechanism of ZnIn 2 S 4 microsphere and nanowires obtained in the presence of CTAB and PEG-6000, respectively. d) TEM micrographs at different magnifications of the ZnIn 2 S 4 nanotubes prepared by the solvothermal method at 180 °C. e) TEM images of the ZnIn 2 S 4 nanoribbons prepared from the solvothermal synthesis at 160 °C at low and higher magnification, respectively. f) TEM micrographs of the CTAB-assisted ZnIn 2 S 4 microspheres. g) TEM images of the PEG-6000 assisted ZnIn 2 S 4 samples after ultrasonic dispersion for 60 min. Reproduced with permission. [54]

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Section: Znin 2 S 4 -Mofs Binary Heterojunctionmentioning

confidence: 99%

ZnIn₂S₄‐Based Photocatalysts for Energy and Environmental Applications

et al. 2021

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“…Photocatalysis is a green and cost-effective strategy to alleviate the thoughtful concerns of environmental worsening prompted by heavy metals arising from industrial wastes. − Among abundant poisonous heavy metals, carcinogenic chromium Cr(VI) is a notorious contaminant in the wastewater because of its high solubility. − The reduction of Cr(VI) to Cr(III) by a heterogeneous nano photocatalyst is the conceivable way for wastewater handling due to the inherent environmental pleasantness of chromium(III). , For this purpose, intensive research efforts have been devoted to developing photocatalysts such as zinc oxide (ZnO), titanium dioxide (TiO 2 ), etc . Unfortunately, following photocatalysts are limited in use because of moderate performance in the ultraviolet (UV) light irradiation conditions, which contain less r than 5% of total sunlight. , In order to solve this problem, many visible-light active photocatalysts such as WO 3 , SnS 2 , Ag 2 S, and CdS have been widely stated. Though, their slow reduction rate and unfortunate activities do not fulfill the required standards for significant water treatment. ,− Thereby, to develop highly active and stable visible-light vigorous nano heterogeneous photocatalysts for Cr(VI) reduction is urgently needed.…”

Section: Introductionmentioning

confidence: 99%

“…5 Unfortunately, following photocatalysts are limited in use because of moderate performance in the ultraviolet (UV) light irradiation conditions, which contain less r than 5% of total sunlight. 2,10 In order to solve this problem, many visible-light active photocatalysts such as WO 3 , SnS 2 , Ag 2 S, and CdS have been widely stated. Though, their slow reduction rate and unfortunate activities do not fulfill the required standards for significant water treatment.…”

Section: Introductionmentioning

confidence: 99%

BiOCl-Coated UiO-66-NH₂ Metal–Organic Framework Nanoparticles for Visible-Light Photocatalytic Cr(VI) Reduction

Hussain

Mehmood

Azhar

et al. 2021

ACS Appl. Nano Mater.

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Pollutants in wastewater, such as Cr(VI) is a continuous threat to our ecological system and human well-being because of its high noxiousness and latent carcinogenicity. Photocatalytic Cr(VI) reduction is the most suitable and eco-friendly way to convert the toxic Cr(VI) to environmentally friendly Cr(III). Porous metal−organic frameworks (MOFs) based nanocomposites are emerging green photocatalysts for Cr(VI) reduction due to their unique characteristics such as high photoconductivity, large surface area, and suitable porous structure. Herein, the preparation of ultrathin BiOCl sheets over UiO-66-NH 2 is reported for the first time at room temperature via a simplistic in situ synthetic process to yield a series of UiO-66-NH 2 @BiOCl-UTN's heterogeneous nano composites. The activity toward Cr(VI) reduction was tested under visible-light. UiO-66-NH 2 @BiOCl-UTN's heterogeneous nanocomposites exhibited better performance as equated to individual BiOCl and UiO-66-NH 2 , particularly the composite with Bi 3+ mole ratio of 5 mM surpassed other composites for photocatalytic Cr(VI) reduction. Furthermore, boosted visible-light absorption (λ > 420 nm) was observed in the presence of −NH 2 moiety on the organic linker. The excellent photocatalytic activity was attributed to the synergistic effect between BiOCl and UiO-66-NH 2 for the effective separation of photogenerated electron−hole suppressing their recombination. Through active species trapping experiments, electron spin resonance measurements, and electrochemical analysis, the reliable mechanism was predicted and confirmed. Moreover, heterogeneous nanomaterial retained its structure and activity for four consecutive cycles demonstrating its superior stability.

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“…Similarly, the mixed metallic sulfide of ZnIn 2 S 4 nanosheets was fabricated in the presence of UiO-66-NH 2 via a solvothermal process. 119 The composite showed a higher photoreduction performance and a faster reaction rate compared to the MOF and ZnIn 2 S 4 .…”

Section: Recent Progress In Mof-based Photocatalystsmentioning

confidence: 93%

“…The authors proposed that the transport of photoinduced electrons from the CB of ZnIn 2 S 4 to the CB of UiO-66 facilitates the charge separation and prolongs the charge lifetime. Similarly, the mixed metallic sulfide of ZnIn 2 S 4 nanosheets was fabricated in the presence of UiO-66-NH 2 via a solvothermal process . The composite showed a higher photoreduction performance and a faster reaction rate compared to the MOF and ZnIn 2 S 4 .…”

Section: Recent Progress In Mof-based Photocatalystsmentioning

confidence: 98%

Recent Progress in the Development of MOF-Based Photocatalysts for the Photoreduction of Cr^(VI)

Jafarzadeh

2022

ACS Appl. Mater. Interfaces

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There has been a direct correlation between the rate of industrial development and the spread of pollution on Earth, particularly in the last century. The organic and inorganic pollutants generated from industrial activities have created serious risks to human life and the environment. The concept of sustainability has emerged to tackle the environmental issues in developing chemical-based industries. However, pollutants have continued to be discharged to water resources, and finding appropriate techniques for the removal and remedy of wastewater is in high demand. Chromium is one of the high-risk heavy metals in industrial wastewaters that should be removed via physical adsorption and/or transformed into less hazardous chemicals. Photocatalysis as a sustainable process has received considerable attention as it utilizes sunlight irradiation to remedy Cr(VI) via a cost-effective process. Numerous photocatalytic systems have been developed up to now, but metal–organic frameworks (MOFs) have gained growing attention because of their unique versatilities and facile structural modulations. A variety of MOF-based photocatalysts have been widely employed for the photoreduction of Cr(VI). Here, we review the recent progress in the design of MOF photocatalysts and summarize their performance in photoreduction reactions.

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Synergetic effect of ZnIn2S4 nanosheets with metal-organic framework molding heterostructure for efficient visible- light driven photocatalytic reduction of Cr(VI)

Cited by 27 publications

References 45 publications

ZnIn₂S₄‐Based Photocatalysts for Energy and Environmental Applications

ZnIn₂S₄‐Based Photocatalysts for Energy and Environmental Applications

BiOCl-Coated UiO-66-NH₂ Metal–Organic Framework Nanoparticles for Visible-Light Photocatalytic Cr(VI) Reduction

Recent Progress in the Development of MOF-Based Photocatalysts for the Photoreduction of Cr^(VI)

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Synergetic effect of ZnIn2S4 nanosheets with metal-organic framework molding heterostructure for efficient visible- light driven photocatalytic reduction of Cr(VI)

Cited by 27 publications

References 45 publications

ZnIn2S4‐Based Photocatalysts for Energy and Environmental Applications

ZnIn2S4‐Based Photocatalysts for Energy and Environmental Applications

BiOCl-Coated UiO-66-NH2 Metal–Organic Framework Nanoparticles for Visible-Light Photocatalytic Cr(VI) Reduction

Recent Progress in the Development of MOF-Based Photocatalysts for the Photoreduction of Cr(VI)

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Product

Resources

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ZnIn₂S₄‐Based Photocatalysts for Energy and Environmental Applications

ZnIn₂S₄‐Based Photocatalysts for Energy and Environmental Applications

BiOCl-Coated UiO-66-NH₂ Metal–Organic Framework Nanoparticles for Visible-Light Photocatalytic Cr(VI) Reduction

Recent Progress in the Development of MOF-Based Photocatalysts for the Photoreduction of Cr^(VI)