Ag2S and MoS2 as dual, co-catalysts for enhanced photocatalytic degradation of organic pollutions over CdS

Wang, Ying; Sun, Mingxuan; Fang, Yalin; Sun, Shanfu; He, Jiating

doi:10.1007/s10853-015-9401-6

Cited by 31 publications

(15 citation statements)

References 47 publications

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“…But conventional processes such as advance oxidation and biological treatment hardly remove it [36][37][38]. The solar evaporation treatment results are shown in Fig.…”

Section: Solar Desalination and Wastewater Treatmentmentioning

confidence: 99%

A stably cross-linked ink on filter paper with 1D transport for efficient photothermal water treatment

Wang

Mohammed

et al. 2020

SN Appl. Sci.

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Photothermal water evaporation using natural solar energy has been attracted more attentions due to wide applications such as water purification, sterilization, power generation and energy conservation. This article reports a low-cost and stable material for efficient generation of water vapor as well as saline and pollution water treatment. The hierarchically porous material consisting of nanoporous carbon and microporous paper is prepared by simply depositing and chemically cross-linking colloidal ink onto a filter paper. A stably homogeneous nanocarbon deposition is formed over microfibers in the paper. The nanocarbon particles greatly increase the surface area of pristine paper (from negligible to 12 m 2 g −1) and light absorption. The carbon modified paper allows high water evaporation rate of 1.34 kg h −1 m −2 from a nanoporous carbon film, continuous capillary water transport in the micropores of paper, as well as minimal convective loss to bulk water due to 1D low contact area with water. The pore sizes of filter papers on the water evaporation together with the controlling of surface temperature and evaporating rate are also performed. Finally, this water solar evaporation system is applied for desalination and wastewater purifying (including heavy metal ion and organic pollutions). A safe freshwater is obtained after treatment. This study demonstrates the potential application of chemical modification of inked filter paper to achieve high evaporation rate and efficiency by rational design.

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“…But conventional processes such as advance oxidation and biological treatment hardly remove it [36][37][38]. The solar evaporation treatment results are shown in Fig.…”

Section: Solar Desalination and Wastewater Treatmentmentioning

confidence: 99%

A stably cross-linked ink on filter paper with 1D transport for efficient photothermal water treatment

Wang

Mohammed

et al. 2020

SN Appl. Sci.

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“…[1][2][3] Wastewater containing such organic dyes will lead to severe environmental pollution. Organic dyes such as rhodamine B (RhB), particularly, have been widely used in some chemical industries we are using in our daily life.…”

Section: Introductionmentioning

confidence: 99%

“…Organic dyes such as rhodamine B (RhB), particularly, have been widely used in some chemical industries we are using in our daily life. [1][2][3] Wastewater containing such organic dyes will lead to severe environmental pollution. Photocatalysis has been proved to be an effective method that can degrade organic contaminants in the wastewater using solar energy.…”

Section: Introductionmentioning

confidence: 99%

Carbon Cloth‐supported MoS₂/Ag₂S/Ag₃PO₄ Composite with High Photocatalytic Activity and Recyclability

Liu

Wang

et al. 2019

ChemCatChem

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The immobilization of powdery photocatalysts has always been a key technology for its practical application in waste-water purification. In this study, we successfully prepared carbon cloth-supported MoS 2 /Ag 2 S/Ag 3 PO 4 (CCMS-AP) composite with high photocatalytic activity and good recyclable property for photodegradation of rhodamine B under visible light irradiation. The effects of immersion time of carbon cloth-supported MoS 2 in AgNO 3 solution on the performance of the CCMS-AP were investigated. The results show that the CCMS-AP prepared with 6 h of immersion time exhibits the highest photocatalytic activity with a reaction rate constant of 42.9 × 10 À 3 min À 1 , which is 4.93 times higher than that of carbon cloth-supported Ag 3 PO 4 . The direct Z-scheme photocatalytic system is responsible for the efficient charge separation and strong oxidation ability of the composite. Moreover, the MoS 2 and carbon fibers provid high speed charge transfer channels for photo-generated electrons, leading to lower recombination rate of electronhole pairs and higher photocatalytic performance of the composite photocatalyst. Our strategy can be extended to fabricate many other recyclable carbon cloth-supported photocatalysts with high performance that shows promising potential applications in wastewater treatment.

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“…Furthermore, MoS 2 can effectively transfer photogenerated electrons and avoid carrier recombination as a co‐catalyst by reducing the overpotential generated during the catalytic process to improve the performance of the catalytic system . More than that, the system of MoS 2 /CdS has solved the weakness of low hydrogen evolution performance of pure CdS …”

Section: Introductionmentioning

confidence: 99%

Enhanced Photoelectrocatalytic H₂ Evolution over Two‐Dimensional MoS₂ Nanosheets Loaded on Cu‐Doped CdS Nanorods

Tian

Liang²,

et al. 2018

ChemElectroChem

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Transition-metal ion doping and efficient decoration by using a co-catalyst have been proven to effectively inhibit the recombination of photogenerated electron-hole pairs and broaden the visible-light response region. Here, we have constructed MoS 2 nanosheets decorated on a copper-doped CdS nanorod composite as a noble-metal-free photoelectrocatalyst. This kind of composite material was constructed through a simple solvothermal method. The morphology, structure, chemical states, photoelectrochemical properties, and other properties were tested by using a diverse range of analytical techniques.Owing to the Cu 2 + doping and the excellent electron-capturing ability of MoS 2 , 5 % MoS 2 /CuÀ CdS (with 7 % Cu 2 + doping in CdS) exhibits excellent hydrogen evolution reaction with a rate of 10.18 mmol h À 1 g À 1 , which is about 48 times higher than that of pure CdS. A significant increase in the photoelectrochemical performance of the composite catalytic material benefits from the synergistic effect between CdS and MoS 2 and fast interfacial charge transfer, owing to the Cu 2 + doping. These findings provide a new thought for further research of the ion doping in photoelectrocatalytic field.

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Ag2S and MoS2 as dual, co-catalysts for enhanced photocatalytic degradation of organic pollutions over CdS

Cited by 31 publications

References 47 publications

A stably cross-linked ink on filter paper with 1D transport for efficient photothermal water treatment

A stably cross-linked ink on filter paper with 1D transport for efficient photothermal water treatment

Carbon Cloth‐supported MoS₂/Ag₂S/Ag₃PO₄ Composite with High Photocatalytic Activity and Recyclability

Enhanced Photoelectrocatalytic H₂ Evolution over Two‐Dimensional MoS₂ Nanosheets Loaded on Cu‐Doped CdS Nanorods

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Ag2S and MoS2 as dual, co-catalysts for enhanced photocatalytic degradation of organic pollutions over CdS

Cited by 31 publications

References 47 publications

A stably cross-linked ink on filter paper with 1D transport for efficient photothermal water treatment

A stably cross-linked ink on filter paper with 1D transport for efficient photothermal water treatment

Carbon Cloth‐supported MoS2/Ag2S/Ag3PO4 Composite with High Photocatalytic Activity and Recyclability

Enhanced Photoelectrocatalytic H2 Evolution over Two‐Dimensional MoS2 Nanosheets Loaded on Cu‐Doped CdS Nanorods

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Product

Resources

About

Carbon Cloth‐supported MoS₂/Ag₂S/Ag₃PO₄ Composite with High Photocatalytic Activity and Recyclability

Enhanced Photoelectrocatalytic H₂ Evolution over Two‐Dimensional MoS₂ Nanosheets Loaded on Cu‐Doped CdS Nanorods