Cr-metal-organic framework coordination with ZnIn2S4 nanosheets for photocatalytic reduction of Cr(VI)

Zhang, Lu; Qiu, Jianhao; Dai, Dingliang; Zhou, Yichen; Liu, Xi; Yao, Jianfeng

doi:10.1016/j.jclepro.2022.130891

Cited by 64 publications

(21 citation statements)

References 35 publications

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“…A hierarchical heterojunction was prepared via an in situ growth of ZnIn 2 S 4 on the surface of a chromium-based MOF, MIL-101(Cr). 120 The results of XPS and Raman spectroscopies confirmed the formation of the Cr−S bond at the interface of ZnIn 2 S 4 and the MOF, which was beneficial for facilitating the charge transfer in the photoreduction reaction of Cr (VI) . MIL-101(Cr)@ZnIn 2 S 4 exhibited 95% efficiency in the Cr (VI) reduction within 30 min with a rate constant of 0.107 min −1 ; 2.9 times higher efficiency than that using ZnIn 2 S 4 .…”

Section: Recent Progress In Mof-based Photocatalystsmentioning

confidence: 77%

“…A hierarchical heterojunction was prepared via an in situ growth of ZnIn 2 S 4 on the surface of a chromium-based MOF, MIL-101(Cr) . The results of XPS and Raman spectroscopies confirmed the formation of the Cr–S bond at the interface of ZnIn 2 S 4 and the MOF, which was beneficial for facilitating the charge transfer in the photoreduction reaction of Cr (VI) .…”

Section: Recent Progress In Mof-based Photocatalystsmentioning

confidence: 99%

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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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Section: Recent Progress In Mof-based Photocatalystsmentioning

confidence: 77%

Section: Recent Progress In Mof-based Photocatalystsmentioning

confidence: 99%

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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“…As shown in Figure S7, clear signals of Pt element and Cr element are detected, indicating that they load onto the surface of the as-prepared sample successfully. For Pt 4f spectra, the peaks at 72.18 and 75.53 eV are ascribed to Pt(II) (Pt–S bonds). , For Cr 2p spectra, the peaks at 576.20 and 586.00 eV are ascribed to Cr(III) (Cr–S bonds), , and the peak at 585.00 eV corresponds to the Auger electron peak of Zn . The transmission electron microscopes (TEM) images show that Pt and Cr elements uniformly load on the surface of ZnIn 2 S 4 -800 (Figure S8).…”

Section: Resultsmentioning

confidence: 99%

Sulfur Vacancy-Enriched Rhombohedral ZnIn₂S₄ Nanosheets for Highly Efficient Photocatalytic Overall Water Splitting under Visible Light Irradiation

Jing

Yao

et al. 2022

ACS Appl. Energy Mater.

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Crystal phase and vacancies play an important role in regulating photocatalytic activity. In this work, sulfur vacancy-enriched rhombohedral ZnIn 2 S 4 was obtained by calcining hexagonal ZnIn 2 S 4 with poor sulfur vacancies under a nitrogen atmosphere. Based on the results of theoretical calculations and photocatalytic performance, it was found that the synergy of crystal phase and sulfur vacancies resulted in highly efficient photocatalytic overall water splitting under visible light irradiation. The lighter average effective mass of photogenerated electrons and holes in the rhombohedral ZnIn 2 S 4 accelerates the separation of photogenerated carriers, which plays a major role in achieving overall water splitting activity. An appropriate amount of sulfur vacancies can further improve the overall water splitting performance, which plays a supplementary role. More importantly, the solar-to-hydrogen conversion efficiency of sulfur vacancy-enriched rhombohedral ZnIn 2 S 4 reaches 0.021%, which is the highest reported efficiency for single-phase ZnIn 2 S 4 .

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“…16 MOFs can effectively capture light, shorten the carrier transmission distance, and enhance the separation of electrons and holes, so they can be used as new functional materials for photocatalysts. 17,18 However, MOFs are not functionalized or synthesized with heterojunction materials, and they do not have high photocatalytic activity and stability. Therefore, it is oen necessary to modify MOFs to improve their photocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Covalent organic framework with sulfonic acid functional groups for visible light-driven CO₂ reduction

Wang

Cui

et al. 2022

RSC Adv.

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Cr-metal-organic framework coordination with ZnIn2S4 nanosheets for photocatalytic reduction of Cr(VI)

Cited by 64 publications

References 35 publications

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

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

Sulfur Vacancy-Enriched Rhombohedral ZnIn₂S₄ Nanosheets for Highly Efficient Photocatalytic Overall Water Splitting under Visible Light Irradiation

Covalent organic framework with sulfonic acid functional groups for visible light-driven CO₂ reduction

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Cr-metal-organic framework coordination with ZnIn2S4 nanosheets for photocatalytic reduction of Cr(VI)

Cited by 64 publications

References 35 publications

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

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

Sulfur Vacancy-Enriched Rhombohedral ZnIn2S4 Nanosheets for Highly Efficient Photocatalytic Overall Water Splitting under Visible Light Irradiation

Covalent organic framework with sulfonic acid functional groups for visible light-driven CO2 reduction

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

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

Sulfur Vacancy-Enriched Rhombohedral ZnIn₂S₄ Nanosheets for Highly Efficient Photocatalytic Overall Water Splitting under Visible Light Irradiation

Covalent organic framework with sulfonic acid functional groups for visible light-driven CO₂ reduction