Bi2MoO6 microspheres for the degradation of orange II by heterogeneous activation of persulfate under visible light

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

Research output: Contribution to journalArticle

Abstract

The 3D microspheres of Bi2MoO6 samples were synthesized hydrothermally using different Bi:Mo molar ratios and evaluated for the removal of orange II under visible light by activating with K2S2O8. The Bi-Mo-2 sample (Bi:Mo molar ratio of 2:1, i.e., stoichiometric composition of Bi2MoO6) showed the strongest catalytic activity by removing 99.43% orange II within 120 min among the several different Bi-Mo materials. The surface of the microspheres was composed of irregular nanosheets with exposed reactive sites, which are beneficial for degrading orange II. Moreover, the Bi2MoO6 catalyst demonstrated good cycling stability and could be reused for at least five runs with only a 6.99% decrease in degradation. The proposed mechanism of photocatalytic activity could be explained by the generation of superoxide radical O2 [rad]− along with SO4 [rad]− and OH[rad] radicals, which were found to be responsible for the orange II degradation. Our research led to an efficient and stable photochemical catalyst for orange II dye degradation in wastewater.

Original languageEnglish (US)
Article number127099
JournalMaterials Letters
Volume261
DOIs
StatePublished - Feb 15 2020

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Microspheres
Chemical activation
activation
degradation
Degradation
catalysts
Catalysts
Nanosheets
inorganic peroxides
catalytic activity
Catalyst activity
Wastewater
Dyes
dyes
cycles
Superoxides
Chemical analysis
Coloring Agents
Bi(2)MoO(6)
2-naphthol orange

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

@article{95442d42287746e8bc901291267a733b,
title = "Bi2MoO6 microspheres for the degradation of orange II by heterogeneous activation of persulfate under visible light",
abstract = "The 3D microspheres of Bi2MoO6 samples were synthesized hydrothermally using different Bi:Mo molar ratios and evaluated for the removal of orange II under visible light by activating with K2S2O8. The Bi-Mo-2 sample (Bi:Mo molar ratio of 2:1, i.e., stoichiometric composition of Bi2MoO6) showed the strongest catalytic activity by removing 99.43{\%} orange II within 120 min among the several different Bi-Mo materials. The surface of the microspheres was composed of irregular nanosheets with exposed reactive sites, which are beneficial for degrading orange II. Moreover, the Bi2MoO6 catalyst demonstrated good cycling stability and could be reused for at least five runs with only a 6.99{\%} decrease in degradation. The proposed mechanism of photocatalytic activity could be explained by the generation of superoxide radical O2 [rad]− along with SO4 [rad]− and OH[rad] radicals, which were found to be responsible for the orange II degradation. Our research led to an efficient and stable photochemical catalyst for orange II dye degradation in wastewater.",
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Bi2MoO6 microspheres for the degradation of orange II by heterogeneous activation of persulfate under visible light. / Zhu, Boyuan; Cheng, Hao; Ma, Jianfeng; Qin, Yong; Kong, Yong; Komarneni, Sridhar.

In: Materials Letters, Vol. 261, 127099, 15.02.2020.

Research output: Contribution to journalArticle

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T1 - Bi2MoO6 microspheres for the degradation of orange II by heterogeneous activation of persulfate under visible light

AU - Zhu, Boyuan

AU - Cheng, Hao

AU - Ma, Jianfeng

AU - Qin, Yong

AU - Kong, Yong

AU - Komarneni, Sridhar

PY - 2020/2/15

Y1 - 2020/2/15

N2 - The 3D microspheres of Bi2MoO6 samples were synthesized hydrothermally using different Bi:Mo molar ratios and evaluated for the removal of orange II under visible light by activating with K2S2O8. The Bi-Mo-2 sample (Bi:Mo molar ratio of 2:1, i.e., stoichiometric composition of Bi2MoO6) showed the strongest catalytic activity by removing 99.43% orange II within 120 min among the several different Bi-Mo materials. The surface of the microspheres was composed of irregular nanosheets with exposed reactive sites, which are beneficial for degrading orange II. Moreover, the Bi2MoO6 catalyst demonstrated good cycling stability and could be reused for at least five runs with only a 6.99% decrease in degradation. The proposed mechanism of photocatalytic activity could be explained by the generation of superoxide radical O2 [rad]− along with SO4 [rad]− and OH[rad] radicals, which were found to be responsible for the orange II degradation. Our research led to an efficient and stable photochemical catalyst for orange II dye degradation in wastewater.

AB - The 3D microspheres of Bi2MoO6 samples were synthesized hydrothermally using different Bi:Mo molar ratios and evaluated for the removal of orange II under visible light by activating with K2S2O8. The Bi-Mo-2 sample (Bi:Mo molar ratio of 2:1, i.e., stoichiometric composition of Bi2MoO6) showed the strongest catalytic activity by removing 99.43% orange II within 120 min among the several different Bi-Mo materials. The surface of the microspheres was composed of irregular nanosheets with exposed reactive sites, which are beneficial for degrading orange II. Moreover, the Bi2MoO6 catalyst demonstrated good cycling stability and could be reused for at least five runs with only a 6.99% decrease in degradation. The proposed mechanism of photocatalytic activity could be explained by the generation of superoxide radical O2 [rad]− along with SO4 [rad]− and OH[rad] radicals, which were found to be responsible for the orange II degradation. Our research led to an efficient and stable photochemical catalyst for orange II dye degradation in wastewater.

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