Photocatalytic degradation of dye by Ag/ZnO prepared by reduction of Tollen’s reagent and the ecotoxicity of degraded products

B Thongrom, P Amornpitoksuk, S Suwanboon, Jonas Baltrusaitis

Research output: Contribution to journalArticleAcademicpeer-review

22 Citations (Scopus)

Abstract

A heterostructure of Ag/ZnO powder was prepared by a reduction of Ag(NH3) 2 + ions in a basic solution or Tollen’s reagent. From this method, the existence of a metallic Ag coating on the ZnO surface was confirmed by transmission electron microscope and x-ray photoelectron spectroscopy. The photocatalytic activity of the Ag/ZnO powders was investigated by analyzing the degradation of an aqueous methylene blue solution under a blacklight irradiation. Furthermore, the parameters, including Ag content, catalyst loading, initial dye concentration and pH, were also studied. After the methylene blue solution was irradiated for 30min under a blacklight illumination, total mineralization was not observed as the presence of some carbon compound species was indicated in a mass spectrum. Furthermore, the toxicity of the treated methylene blue solution produced by the Ag/ZnO powders was also investigated by a test for the inhibition of the growth of Chlorella vulgaris.
Original languageUndefined
Pages (from-to)587-592
JournalKorean journal of chemical engineering
Volume31
Issue number4
DOIs
Publication statusPublished - 2014

Keywords

  • IR-93805
  • METIS-308374

Cite this

Thongrom, B ; Amornpitoksuk, P ; Suwanboon, S ; Baltrusaitis, Jonas. / Photocatalytic degradation of dye by Ag/ZnO prepared by reduction of Tollen’s reagent and the ecotoxicity of degraded products. In: Korean journal of chemical engineering. 2014 ; Vol. 31, No. 4. pp. 587-592.
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title = "Photocatalytic degradation of dye by Ag/ZnO prepared by reduction of Tollen’s reagent and the ecotoxicity of degraded products",
abstract = "A heterostructure of Ag/ZnO powder was prepared by a reduction of Ag(NH3) 2 + ions in a basic solution or Tollen’s reagent. From this method, the existence of a metallic Ag coating on the ZnO surface was confirmed by transmission electron microscope and x-ray photoelectron spectroscopy. The photocatalytic activity of the Ag/ZnO powders was investigated by analyzing the degradation of an aqueous methylene blue solution under a blacklight irradiation. Furthermore, the parameters, including Ag content, catalyst loading, initial dye concentration and pH, were also studied. After the methylene blue solution was irradiated for 30min under a blacklight illumination, total mineralization was not observed as the presence of some carbon compound species was indicated in a mass spectrum. Furthermore, the toxicity of the treated methylene blue solution produced by the Ag/ZnO powders was also investigated by a test for the inhibition of the growth of Chlorella vulgaris.",
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Photocatalytic degradation of dye by Ag/ZnO prepared by reduction of Tollen’s reagent and the ecotoxicity of degraded products. / Thongrom, B; Amornpitoksuk, P; Suwanboon, S; Baltrusaitis, Jonas.

In: Korean journal of chemical engineering, Vol. 31, No. 4, 2014, p. 587-592.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Photocatalytic degradation of dye by Ag/ZnO prepared by reduction of Tollen’s reagent and the ecotoxicity of degraded products

AU - Thongrom, B

AU - Amornpitoksuk, P

AU - Suwanboon, S

AU - Baltrusaitis, Jonas

PY - 2014

Y1 - 2014

N2 - A heterostructure of Ag/ZnO powder was prepared by a reduction of Ag(NH3) 2 + ions in a basic solution or Tollen’s reagent. From this method, the existence of a metallic Ag coating on the ZnO surface was confirmed by transmission electron microscope and x-ray photoelectron spectroscopy. The photocatalytic activity of the Ag/ZnO powders was investigated by analyzing the degradation of an aqueous methylene blue solution under a blacklight irradiation. Furthermore, the parameters, including Ag content, catalyst loading, initial dye concentration and pH, were also studied. After the methylene blue solution was irradiated for 30min under a blacklight illumination, total mineralization was not observed as the presence of some carbon compound species was indicated in a mass spectrum. Furthermore, the toxicity of the treated methylene blue solution produced by the Ag/ZnO powders was also investigated by a test for the inhibition of the growth of Chlorella vulgaris.

AB - A heterostructure of Ag/ZnO powder was prepared by a reduction of Ag(NH3) 2 + ions in a basic solution or Tollen’s reagent. From this method, the existence of a metallic Ag coating on the ZnO surface was confirmed by transmission electron microscope and x-ray photoelectron spectroscopy. The photocatalytic activity of the Ag/ZnO powders was investigated by analyzing the degradation of an aqueous methylene blue solution under a blacklight irradiation. Furthermore, the parameters, including Ag content, catalyst loading, initial dye concentration and pH, were also studied. After the methylene blue solution was irradiated for 30min under a blacklight illumination, total mineralization was not observed as the presence of some carbon compound species was indicated in a mass spectrum. Furthermore, the toxicity of the treated methylene blue solution produced by the Ag/ZnO powders was also investigated by a test for the inhibition of the growth of Chlorella vulgaris.

KW - IR-93805

KW - METIS-308374

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DO - 10.1007/s11814-013-0262-x

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SP - 587

EP - 592

JO - Korean journal of chemical engineering

JF - Korean journal of chemical engineering

SN - 0256-1115

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