Copper sulfide as an excellent co-catalyst with K2S2O8 for dye decomposition in advanced oxidation process

Boyuan Zhu, Hao Cheng, Yong Qin, Jianfeng Ma, Yong Kong, Sridhar Komarneni

Research output: Contribution to journalArticle

Abstract

Copper sulfide (CuS) nanoparticles were prepared at 140 °C by a simple hydrothermal method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunauer, Emmett, Teller (BET) specific surface area method. Orange II (60 mg/L) was used as the target pollutant to investigate the degradation performance of CuS and K2S2O8 under visible light irradiation. The degradation efficiency reached 98.88% in CuS/K2S2O8/visible light system within 120 min, which showed very strong activity. Moreover, the catalyst also showed good stability and recycling performance for degrading Orange II. After three consecutive degradation cycles, the degradation efficiency of Orange II was found to be not less than 98%. The dye degradation mechanism was proposed as follows: Cu2+/Cu+ cycling catalyzed K2S2O8 to produce free radicals (SO4[rad]−), which significantly improved the oxidation ability of CuS/K2S2O8/visible light system.

Original languageEnglish (US)
Article number116057
JournalSeparation and Purification Technology
Volume233
DOIs
StatePublished - Feb 15 2020

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Sulfides
Copper
Coloring Agents
Dyes
Decomposition
Degradation
Oxidation
Catalysts
Free radicals
Specific surface area
Free Radicals
Recycling
Irradiation
Nanoparticles
X ray diffraction
Scanning electron microscopy
cupric sulfide
2-naphthol orange

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Filtration and Separation

Cite this

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title = "Copper sulfide as an excellent co-catalyst with K2S2O8 for dye decomposition in advanced oxidation process",
abstract = "Copper sulfide (CuS) nanoparticles were prepared at 140 °C by a simple hydrothermal method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunauer, Emmett, Teller (BET) specific surface area method. Orange II (60 mg/L) was used as the target pollutant to investigate the degradation performance of CuS and K2S2O8 under visible light irradiation. The degradation efficiency reached 98.88{\%} in CuS/K2S2O8/visible light system within 120 min, which showed very strong activity. Moreover, the catalyst also showed good stability and recycling performance for degrading Orange II. After three consecutive degradation cycles, the degradation efficiency of Orange II was found to be not less than 98{\%}. The dye degradation mechanism was proposed as follows: Cu2+/Cu+ cycling catalyzed K2S2O8 to produce free radicals (SO4[rad]−), which significantly improved the oxidation ability of CuS/K2S2O8/visible light system.",
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Copper sulfide as an excellent co-catalyst with K2S2O8 for dye decomposition in advanced oxidation process. / Zhu, Boyuan; Cheng, Hao; Qin, Yong; Ma, Jianfeng; Kong, Yong; Komarneni, Sridhar.

In: Separation and Purification Technology, Vol. 233, 116057, 15.02.2020.

Research output: Contribution to journalArticle

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T1 - Copper sulfide as an excellent co-catalyst with K2S2O8 for dye decomposition in advanced oxidation process

AU - Zhu, Boyuan

AU - Cheng, Hao

AU - Qin, Yong

AU - Ma, Jianfeng

AU - Kong, Yong

AU - Komarneni, Sridhar

PY - 2020/2/15

Y1 - 2020/2/15

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AB - Copper sulfide (CuS) nanoparticles were prepared at 140 °C by a simple hydrothermal method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunauer, Emmett, Teller (BET) specific surface area method. Orange II (60 mg/L) was used as the target pollutant to investigate the degradation performance of CuS and K2S2O8 under visible light irradiation. The degradation efficiency reached 98.88% in CuS/K2S2O8/visible light system within 120 min, which showed very strong activity. Moreover, the catalyst also showed good stability and recycling performance for degrading Orange II. After three consecutive degradation cycles, the degradation efficiency of Orange II was found to be not less than 98%. The dye degradation mechanism was proposed as follows: Cu2+/Cu+ cycling catalyzed K2S2O8 to produce free radicals (SO4[rad]−), which significantly improved the oxidation ability of CuS/K2S2O8/visible light system.

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