Co-Mn-Fe complex oxide catalysts from layered double hydroxides for decomposition of methylene blue: Role of Mn

Daiqin Huang, Jianfeng Ma, Changhai Fan, Kai Wang, Wenchang Zhao, Mingguo Peng, Sridhar Komarneni

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Composite Co-Mn-Fe oxide catalysts were prepared by thermal decomposition of layered double hydroxide (LDH) or hydrotalcite-like precursors. A series of catalysts at different Mn/Fe ratios were obtained and characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF) spectrometry, UV–vis diffuse reflectance spectroscopy and BET surface area analysis. The catalysts were tested for methylene blue (MB) dye decomposition under visible light illumination with and without the assistance of NaHSO 3 . When visible light illumination was used on the catalyst in the presence of NaHSO 3 , the degradation efficiency was greatly enhanced. All the Mn-containing samples showed much higher capability to degrade MB than that of MnO 2 under the same conditions. The [0]CoMnFe-LDO sample which did not contain any Mn showed lower degrading ability than MnO 2 . In addition to determining the role of Mn and the Mn/Fe ratio of the complex oxide catalysts on the decomposition of MB, the stability and reusability of these complex oxide catalysts were also tested and found to be good.

Original languageEnglish (US)
Pages (from-to)230-238
Number of pages9
JournalApplied Clay Science
Volume152
DOIs
StatePublished - Feb 1 2018

Fingerprint

Hydroxides
Methylene Blue
Oxides
hydroxide
catalyst
oxide
decomposition
Decomposition
Catalysts
hydrotalcite
Lighting
thermal decomposition
Reusability
X-ray fluorescence
spectrometry
reflectance
dye
Pyrolysis
Coloring Agents
surface area

All Science Journal Classification (ASJC) codes

  • Geology
  • Geochemistry and Petrology

Cite this

Huang, Daiqin ; Ma, Jianfeng ; Fan, Changhai ; Wang, Kai ; Zhao, Wenchang ; Peng, Mingguo ; Komarneni, Sridhar. / Co-Mn-Fe complex oxide catalysts from layered double hydroxides for decomposition of methylene blue : Role of Mn. In: Applied Clay Science. 2018 ; Vol. 152. pp. 230-238.
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abstract = "Composite Co-Mn-Fe oxide catalysts were prepared by thermal decomposition of layered double hydroxide (LDH) or hydrotalcite-like precursors. A series of catalysts at different Mn/Fe ratios were obtained and characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF) spectrometry, UV–vis diffuse reflectance spectroscopy and BET surface area analysis. The catalysts were tested for methylene blue (MB) dye decomposition under visible light illumination with and without the assistance of NaHSO 3 . When visible light illumination was used on the catalyst in the presence of NaHSO 3 , the degradation efficiency was greatly enhanced. All the Mn-containing samples showed much higher capability to degrade MB than that of MnO 2 under the same conditions. The [0]CoMnFe-LDO sample which did not contain any Mn showed lower degrading ability than MnO 2 . In addition to determining the role of Mn and the Mn/Fe ratio of the complex oxide catalysts on the decomposition of MB, the stability and reusability of these complex oxide catalysts were also tested and found to be good.",
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Co-Mn-Fe complex oxide catalysts from layered double hydroxides for decomposition of methylene blue : Role of Mn. / Huang, Daiqin; Ma, Jianfeng; Fan, Changhai; Wang, Kai; Zhao, Wenchang; Peng, Mingguo; Komarneni, Sridhar.

In: Applied Clay Science, Vol. 152, 01.02.2018, p. 230-238.

Research output: Contribution to journalArticle

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T1 - Co-Mn-Fe complex oxide catalysts from layered double hydroxides for decomposition of methylene blue

T2 - Role of Mn

AU - Huang, Daiqin

AU - Ma, Jianfeng

AU - Fan, Changhai

AU - Wang, Kai

AU - Zhao, Wenchang

AU - Peng, Mingguo

AU - Komarneni, Sridhar

PY - 2018/2/1

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N2 - Composite Co-Mn-Fe oxide catalysts were prepared by thermal decomposition of layered double hydroxide (LDH) or hydrotalcite-like precursors. A series of catalysts at different Mn/Fe ratios were obtained and characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF) spectrometry, UV–vis diffuse reflectance spectroscopy and BET surface area analysis. The catalysts were tested for methylene blue (MB) dye decomposition under visible light illumination with and without the assistance of NaHSO 3 . When visible light illumination was used on the catalyst in the presence of NaHSO 3 , the degradation efficiency was greatly enhanced. All the Mn-containing samples showed much higher capability to degrade MB than that of MnO 2 under the same conditions. The [0]CoMnFe-LDO sample which did not contain any Mn showed lower degrading ability than MnO 2 . In addition to determining the role of Mn and the Mn/Fe ratio of the complex oxide catalysts on the decomposition of MB, the stability and reusability of these complex oxide catalysts were also tested and found to be good.

AB - Composite Co-Mn-Fe oxide catalysts were prepared by thermal decomposition of layered double hydroxide (LDH) or hydrotalcite-like precursors. A series of catalysts at different Mn/Fe ratios were obtained and characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF) spectrometry, UV–vis diffuse reflectance spectroscopy and BET surface area analysis. The catalysts were tested for methylene blue (MB) dye decomposition under visible light illumination with and without the assistance of NaHSO 3 . When visible light illumination was used on the catalyst in the presence of NaHSO 3 , the degradation efficiency was greatly enhanced. All the Mn-containing samples showed much higher capability to degrade MB than that of MnO 2 under the same conditions. The [0]CoMnFe-LDO sample which did not contain any Mn showed lower degrading ability than MnO 2 . In addition to determining the role of Mn and the Mn/Fe ratio of the complex oxide catalysts on the decomposition of MB, the stability and reusability of these complex oxide catalysts were also tested and found to be good.

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