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Rodlike AgI/Ag₂Mo₂O₇ Heterojunctions with Enhanced Visible-Light-Driven Photocatalytic Activity.

ABSTRACT: Novel AgI/Ag₂Mo₂O₇ heterojunctions were prepared by reacting Ag₂Mo₂O₇ microrods with an aqueous KI solution at room temperature. The composite materials, compared with neat AgI and Ag₂Mo₂O₇, showed much higher activities in the photocatalytic degradation of aqueous rhodamine B, methyl orange, tetracycline hydrochloride, and levofloxacin solutions under visible-light irradiation. The structures, morphologies, and other physicochemical properties of AgI, Ag₂Mo₂O₇, and AgI/Ag₂Mo₂O₇ composites were studied via various characterization techniques. The active species involved in the photocatalytic process were examined via radical-capturing experiments and electron spin resonance. Superoxide anion radicals (^•O₂ ^-) and photogenerated holes (h⁺) were found to be the main active species. Photocatalytic mechanisms were proposed and reasons for the enhanced photocatalytic activity were explained.

SUBMITTER: Jiao Z

PROVIDER: S-EPMC6648513 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Rodlike AgI/Ag2Mo2O7 Heterojunctions with Enhanced Visible-Light-Driven Photocatalytic Activity.

Jiao Zhongyi Z Liu Zhendong Z Ma Zhen Z

ACS omega 20190501 5

Novel AgI/Ag2Mo2O7 heterojunctions were prepared by reacting Ag2Mo2O7 microrods with an aqueous KI solution at room temperature. The composite materials, compared with neat AgI and Ag2Mo2O7, showed much higher activities in the photocatalytic degradation of aqueous rhodamine B, methyl orange, tetracycline hydrochloride, and levofloxacin solutions under visible-light irradiation. The structures, mor ...[more]

PMID: 31459880

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