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Application of activated M/ZnO (M = Mn, Co, Ni, Cu, Ag) in photocatalytic degradation of diazo textile coloring dye.
Environ Sci Pollut Res Int. 2014 Nov; 21(21):12249-56.ES

Abstract

Activated ZnO powder has been prepared by procedures involving first its dissolution in nitric acid, then simultaneous treatment by adding NH4OH and CO2 bubbling leading to precipitation as Zn(OH)CO3 (ZH) and further thermal decomposition of ZH at 400 °C. The gas evolution leads to formation of pores and increase in the specific surface area. Chemically activated M/ZnO powders doped with Mn, Co, Ni, Cu, and Ag have been obtained by the impregnation method. The samples have been characterized by ultraviolet-visible (UV-Vis) spectroscopy, diffuse reflectance (DR) UV-Vis, X-ray diffraction (XRD), single point Brunauer-Emmet-Teller (BET), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS) methods. The experiments have shown that metal-doped activated ZnO powders possess higher photocatalytic activities in oxidative discoloration of model contaminant textile coloring dye Reactive Black 5 in slurry reactor compared to that of the pure ZnO. The XRD and XPS data have shown the presence of defects, nonstoichiometricity implying the formation of solid solutions. Copper-doped (1.5 wt%) activated ZnO (Cu(2+) replaces Zn(2+)) is outstanding in its photocatalytic performance in discoloration of the dye due to the higher specific surface area and improved charge carrier separation.

Authors+Show Affiliations

Institute of Catalysis, Acad. G.Bonchev St, bl.11, 1113, Sofia, Bulgaria, kmilenova@mail.bg.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24996938

Citation

Milenova, K, et al. "Application of Activated M/ZnO (M = Mn, Co, Ni, Cu, Ag) in Photocatalytic Degradation of Diazo Textile Coloring Dye." Environmental Science and Pollution Research International, vol. 21, no. 21, 2014, pp. 12249-56.
Milenova K, Avramova I, Eliyas A, et al. Application of activated M/ZnO (M = Mn, Co, Ni, Cu, Ag) in photocatalytic degradation of diazo textile coloring dye. Environ Sci Pollut Res Int. 2014;21(21):12249-56.
Milenova, K., Avramova, I., Eliyas, A., Blaskov, V., Stambolova, I., & Kassabova, N. (2014). Application of activated M/ZnO (M = Mn, Co, Ni, Cu, Ag) in photocatalytic degradation of diazo textile coloring dye. Environmental Science and Pollution Research International, 21(21), 12249-56. https://doi.org/10.1007/s11356-014-2955-z
Milenova K, et al. Application of Activated M/ZnO (M = Mn, Co, Ni, Cu, Ag) in Photocatalytic Degradation of Diazo Textile Coloring Dye. Environ Sci Pollut Res Int. 2014;21(21):12249-56. PubMed PMID: 24996938.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Application of activated M/ZnO (M = Mn, Co, Ni, Cu, Ag) in photocatalytic degradation of diazo textile coloring dye. AU - Milenova,K, AU - Avramova,I, AU - Eliyas,A, AU - Blaskov,V, AU - Stambolova,I, AU - Kassabova,Nikoleta, Y1 - 2014/07/06/ PY - 2014/01/14/received PY - 2014/04/21/accepted PY - 2014/7/6/entrez PY - 2014/7/6/pubmed PY - 2015/8/1/medline SP - 12249 EP - 56 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 21 IS - 21 N2 - Activated ZnO powder has been prepared by procedures involving first its dissolution in nitric acid, then simultaneous treatment by adding NH4OH and CO2 bubbling leading to precipitation as Zn(OH)CO3 (ZH) and further thermal decomposition of ZH at 400 °C. The gas evolution leads to formation of pores and increase in the specific surface area. Chemically activated M/ZnO powders doped with Mn, Co, Ni, Cu, and Ag have been obtained by the impregnation method. The samples have been characterized by ultraviolet-visible (UV-Vis) spectroscopy, diffuse reflectance (DR) UV-Vis, X-ray diffraction (XRD), single point Brunauer-Emmet-Teller (BET), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS) methods. The experiments have shown that metal-doped activated ZnO powders possess higher photocatalytic activities in oxidative discoloration of model contaminant textile coloring dye Reactive Black 5 in slurry reactor compared to that of the pure ZnO. The XRD and XPS data have shown the presence of defects, nonstoichiometricity implying the formation of solid solutions. Copper-doped (1.5 wt%) activated ZnO (Cu(2+) replaces Zn(2+)) is outstanding in its photocatalytic performance in discoloration of the dye due to the higher specific surface area and improved charge carrier separation. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/24996938/Application_of_activated_M/ZnO__M_=_Mn_Co_Ni_Cu_Ag__in_photocatalytic_degradation_of_diazo_textile_coloring_dye_ L2 - https://dx.doi.org/10.1007/s11356-014-2955-z DB - PRIME DP - Unbound Medicine ER -