Comparative study of the photocatalytic performance for the degradation of different dyes by ZnIn<sub>2</sub>S<sub>4</sub>: adsorption, active species, and pathways

Liu, Tingting; Wang, Lei; Xue, Lin; Fan, Jiamin; Cai, Xing; Gao, Bo; Miao, Rui; Wang, Jiaxuan; Lv, Yongtao

doi:10.1039/c7ra00199a

Cited by 260 publications

(81 citation statements)

References 38 publications

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“…Addition of 500 mM of IPA had very less effect on degradation capacity confirmed less participation of HO • . The photo generated electrons and h + quencher EDTA almost stopped the degradation process and no further degradation was observed after adsorption, firmly established the participation O 2 −• in the degradation process [39]. The degradation of CF was also investigated by LC-MS technique (Fig.…”

Section: Photocatalytic Mechanism and Metabolite Identification By Lc-msmentioning

confidence: 62%

Ni and Zn modified acid activated montmorillonite clay for effective removal of carbol fuchsin dye from aqueous solution

Shinde

2020

SN Appl. Sci.

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The present work aims to investigate efficiency of zinc and nickel modified acid activated montmorillonite clay to remove carbol fuchsin dye from aqueous solution. The synthesized nanocomposites were characterized by TEM, SEM-EDAX, XRD, FT-IR and UV-Vis techniques. The adsorption of dye increased with increase in pH obeying pseudo-second-order rate kinetics and rapidly degraded (94%) alkaline dye solution in 90 min confirmed by LC-MS analysis. Zinc modified clay had slight edge due to high adsorption capacity and 3.24 eV band gap energy. Scavenger study confirmed participation of O 2 −• in degradation mechanism and reusability experiments confirmed stability of nanocomposites for multiple cycle.

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Section: Photocatalytic Mechanism and Metabolite Identification By Lc-msmentioning

confidence: 62%

Ni and Zn modified acid activated montmorillonite clay for effective removal of carbol fuchsin dye from aqueous solution

Shinde

2020

SN Appl. Sci.

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“…The absorption intensity of the peaks of the dyes gradually decreases upon increasing irradiation time without detection of any new peaks and shifts of the absorption maximum. This implies that the dyes are continuously degraded during the photocatalytic processes through the chromophore destruction [43][44][45].…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic activity of CuInS₂ nanoparticles synthesized via a simple and rapid microwave heating process

Chumha

Pudkon

Chachvalvutikul

et al. 2020

Mater. Res. Express

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In this research, visible-light photocatalytic activities of CuInS 2 nanoparticles for degradation of three organic dyes (rhodamine B; RhB, methylene blue; MB, and methyl orange; MO) were investigated. The CuInS 2 nanoparticles were synthesized by a simple and rapid microwave heating process using sodium sulfide as a sulfur source and then characterized by x-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET), and UV-vis diffuse reflectance spectroscopy (UV-vis DRS) techniques. The synthesized CuInS 2 nanoparticles exhibited excellent photocatalytic degradation activity to the cationic dyes (RhB and MB) when compared with that of anionic dye (MO). Zeta potential of the CuInS 2 photocatalyst was measured to elucidate the adsorption ability toward dye molecules. A possible photocatalytic degradation mechanism was proposed based on active species quenching experiments and Mott-Schottky analysis.

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“…Therefore, the electrons may react with oxygen adsorbed on the catalyst surface during the transfer to the carbon core forming (8). Thereby, the radicals produced in the above described processes are responsible for the dye degradation [33,34,59,61]. Moreover, another mechanism of AR18 decomposition is also possible.…”

Section: Resultsmentioning

confidence: 99%

Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization

et al. 2019

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Spherical photocatalyst based on ordered mesoporous carbon and graphitic carbon nitride with core/shell structure (CS/GCN) was successfully synthesized via facile electrostatic self-assembly strategy. The photocatalytic properties of the hybrid were evaluated by the decomposition of Acid Red 18 under simulated solar light irradiation in comparison to the bulk graphitic carbon nitride (GCN). The results clearly revealed that coupling of carbon nitride with mesoporous carbon allows the catalyst to form with superior photocatalytic performance. The photoactivity of CS/GCN was over nine times higher than that of pristine GCN. Introducing mesoporous carbon into GCN induced higher surface area of the heterojunction and also facilitated the contact surface between the two phases. The synergistic effect between those two components enhanced the visible light-harvesting efficiency and improved photoinduced charge carrier generation, and consequently their proper separation. The electrochemical behavior of the obtained composite was also evaluated by electrochemical impedance, transient photocurrent response and linear sweep potentiometry measurements. The results confirmed that transport and separation of charge carriers in the hybrid was enhanced in comparison to the reference bulk graphitic carbon nitride. Detailed electrochemical, photoluminescence and radical scavenger tests enabled determination of the possible mechanism of photocatalytic process. This work presents new insights to design a core/shell hybrid through the simple preparation process, which can be successfully used as an efficient photocatalyst for the treatment of wastewater containing dyes under solar light irradiation.Catalysts 2019, 9, 1007 2 of 17 increase the surface area, the porosity in the structure of GCN can be additionally induced. Mesoporous photocatalysts received considerable research interest because they contain a special pore network, which facilitates the diffusion of the reactants and products. Moreover, the large surface area offers more active sites. Therefore, for an economical utilization of GCN, the researchers should strive to find the way for enhancing its photocatalytic properties [10,11].Up to now, different strategies, including introducing foreign elements, designing nanoporous structures, texturization, supramolecular assembly and creating effective heterojunctions, have been developed to enhance the photoactivity of GCN [12]. A large number of studies have confirmed that building a heterojunction system is an effective method to improve the separation efficiency of the photogenerated electrons and holes which dramatically improves the photocatalytic performance [13].To form an efficient heterojunction, GCN has been coupled with other semiconductors such as TiO , etc. [12,[14][15][16][17][18][19][20][21]. Unfortunately, the particles (often in the agglomerated form) were usually loaded randomly on the GCN sheets in composites causing low conjunction of GCN with a semiconductor which consequently limited charge transfer and...

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Comparative study of the photocatalytic performance for the degradation of different dyes by ZnIn₂S₄: adsorption, active species, and pathways

Abstract: Comparative study of the photocatalytic performance for the degradation of different by ZnIn2S4 based on the adsorption of dyes, the active species and the degradation pathway.

Cited by 260 publications

References 38 publications

Ni and Zn modified acid activated montmorillonite clay for effective removal of carbol fuchsin dye from aqueous solution

Ni and Zn modified acid activated montmorillonite clay for effective removal of carbol fuchsin dye from aqueous solution

Photocatalytic activity of CuInS₂ nanoparticles synthesized via a simple and rapid microwave heating process

Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization

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Comparative study of the photocatalytic performance for the degradation of different dyes by ZnIn2S4: adsorption, active species, and pathways

Abstract: Comparative study of the photocatalytic performance for the degradation of different by ZnIn2S4 based on the adsorption of dyes, the active species and the degradation pathway.

Cited by 260 publications

References 38 publications

Ni and Zn modified acid activated montmorillonite clay for effective removal of carbol fuchsin dye from aqueous solution

Ni and Zn modified acid activated montmorillonite clay for effective removal of carbol fuchsin dye from aqueous solution

Photocatalytic activity of CuInS2 nanoparticles synthesized via a simple and rapid microwave heating process

Core/Shell Structure of Mesoporous Carbon Spheres and g-C3N4 for Acid Red 18 Decolorization

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Product

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Comparative study of the photocatalytic performance for the degradation of different dyes by ZnIn₂S₄: adsorption, active species, and pathways

Photocatalytic activity of CuInS₂ nanoparticles synthesized via a simple and rapid microwave heating process