Bimetal Seleno‐Sulfide Cu<i>NiSe</i>S Nanosheet Catalyst for Methylene Blue Degradation in the Dark

Chen, Xiaoyun; Kuo, Dong‐Hau; Zongyan, Wu; Abdullah, Hairus; Zhang, Jubin; Lin, Juan

doi:10.1002/ejic.201800508

Cited by 11 publications

(4 citation statements)

References 52 publications

(22 reference statements)

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“…The light application limits this technology to work. 22 In this paper, 3D-constructed NiS assembled by 2D nanosheets was synthesized and used as a catalyst for the Fenton reaction to degrade RhB dye without light. Threedimensional transition-metal sulfides have attracted attention due to their high surface areas, short transport distances of ion and mass, and enhanced catalytic properties.…”

Section: ■ Introductionmentioning

confidence: 99%

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Facile Synthesis of 3D-Structured NiS as an Excellent Fenton-like Catalyst under Various pH through Different Mechanisms

2019

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Two-dimensional (2D) layer-structured transition-metal sulfide shows excellent Fenton catalytic properties, which has attracted much attention. However, the release of metal cations from the catalyst induces secondary environmental pollution. In the present study, 3D-constructed NiS assembled by 2D nanosheets was synthesized by a hydrothermal method. The NiS displayed high levels of Fenton catalytic activity for the degradation of rhodamine B (RhB) under a wide pH range from 5.60 to 12.21. However, Ni2+ was released in acidic solutions, and the released Ni2+ decreased with increasing pH. The catalytic mechanisms in acidic and alkaline solutions were explored. The high Fenton catalytic activity benefits from the synergistic effect of the Ni2+ and the S2– at pH = 5.60. At pH = 12.21, the S atom accelerated the electron transfer between the Ni(III) and Ni(II) at the NiS surface. The material kept the same catalytic activity for many cycles. These results demonstrate that NiS can be used as a catalyst for the Fenton process in alkaline conditions.

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Section: ■ Introductionmentioning

confidence: 99%

“…Light excitation is always needed for the degradation of organic pollutants through the Fenton process. The light application limits this technology to work …”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of 3D-Structured NiS as an Excellent Fenton-like Catalyst under Various pH through Different Mechanisms

2019

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“…In our previous work, CuNiOS, CuInOS, ZnNiOS, CuMnOS and CuNiSeS catalysts were synthesized for reduction of 4-nitrophenol with NaBH 4 , reduction of Cr (VI) under dark, hydrogen evolution under lower-power UV light, or degradation of methylene blue (MB) in the dark. [45][46][47][48][49][50][51] Comparing with other component metals, the bimetal oxysulfide catalysts displayed excellent catalytic activity, which can be contributed to the synergistic effect between the constituents and the additional degrees of freedom to boost its catalytic performance. [37,[51][52][53] The presence of two distinct metals in bimetal oxysulfide catalyst systems can provide an active center for the reaction, and offer a suitable situation for the reactant molecules to stimulate the catalytic process.…”

Section: Introductionmentioning

confidence: 99%

“…prepared Cu‐doped ZnOS oxysulfide alloy films with high hole concentration of 4.3 × 10 19 cm −3 and its applications in spintronic devices. In our previous work, Cu Ni OS, Cu In OS, Zn Ni OS, Cu Mn OS and Cu Ni SeS catalysts were synthesized for reduction of 4‐nitrophenol with NaBH 4 , reduction of Cr (VI) under dark, hydrogen evolution under lower‐power UV light, or degradation of methylene blue (MB) in the dark . Comparing with other component metals, the bimetal oxysulfide catalysts displayed excellent catalytic activity, which can be contributed to the synergistic effect between the constituents and the additional degrees of freedom to boost its catalytic performance .…”

Section: Introductionmentioning

confidence: 99%

Tubular bimetal oxysulfide CuMgOS catalyst for rapid reduction of heavy metals and organic dyes

Chen

Kuo

Zhang

et al. 2019

Applied Organom Chemis

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Tubular bimetal oxysulfide CuMgOS catalyst was prepared using a feasible method at a low process temperature of 95°C. X‐ray diffractometry, X‐ray photoelectron spectrometry, field emission‐scanning electron microscopy, transmission electron microscopy, UV–Vis diffuse reflectance spectroscopy, photoluminescence emission spectrum, and nitrogen adsorption–desorption isotherms were used for CuMgOS characterizations. The CuMgOS reduction activities were investigated through the reduction of heavy metals of Cr (VI), Pb (II) and Hg (II) solutions, and the organic dyes of rhodamine‐B (RhB), methyl orange (MO) and methylene blue (MB) solutions under dark. The results showed that the CuMgOS prepared with an appropriate N2H4 amount for a suitable Cu (I)/Cu (II) ratio exhibited fast reduction activity without adding any reagents, with which the 100 mL Cr (VI), Pb (II) and Hg (II) solutions of 50 ppm were 100% reduced by 20 mg CuMgOS within 4 min, 6 min and 4 min, respectively. The 100 mL RhB, MO and MB solutions of 50 ppm were 100% reduced by 10 mg CuMgOS within 4 min, 5 min and 1 min, respectively, under the existence of NaBH4. CuMgOS displayed excellent chemical stability for the re‐use tests on heavy metal ions and organic dyes. The excellent performance is attributed to CuMgOS bimetal oxysulfide catalyst with active surface reaction centers to interact with reactants, and the carrier hopping between Cu (I) and Cu (II).

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Low-Cost Photo-Fenton-Like Process for the Removal of Synthetic Dye in Aqueous Solution at Circumneutral pH

Manaa¹,

Chebli²,

Bouguettoucha³

et al. 2019

Arab J Sci Eng

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Bimetal Seleno‐Sulfide CuNiSeS Nanosheet Catalyst for Methylene Blue Degradation in the Dark

Cited by 11 publications

References 52 publications

Facile Synthesis of 3D-Structured NiS as an Excellent Fenton-like Catalyst under Various pH through Different Mechanisms

Facile Synthesis of 3D-Structured NiS as an Excellent Fenton-like Catalyst under Various pH through Different Mechanisms

Tubular bimetal oxysulfide CuMgOS catalyst for rapid reduction of heavy metals and organic dyes

Low-Cost Photo-Fenton-Like Process for the Removal of Synthetic Dye in Aqueous Solution at Circumneutral pH

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