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Correlations between Reduction Degree and Catalytic Properties of WO _x Nanoparticles.

ABSTRACT: Degrading organic dyes via catalytic processes for waste water purification is an important research topic from the environmental conservation point of view. Herein, the catalytic performance of tungsten blue oxide (WO _x ) nanoparticles was investigated systematically by varying the reduction temperature. The optimum reduction temperature to obtain the most stable WO _x phase was obtained when plasma-synthesized WO₃ nanoparticles were thermally reduced at 425 °C. The as-synthesized nanoparticles had an average diameter of 10 nm and a calculated band gap of 2.37 eV, which is lower than that of the WO₃ nanoparticles (2.61 eV). The WO _x nanoparticles exhibited an excellent performance in degrading rhodamine B under dark conditions and visible light irradiation, with a reaction rate constant 93 times higher than that of the WO₃ nanoparticles.

SUBMITTER: Rinaldi FG

PROVIDER: S-EPMC6644510 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Correlations between Reduction Degree and Catalytic Properties of WO x Nanoparticles.

Rinaldi Febrigia Ghana FG Arutanti Osi O Arif Aditya Farhan AF Hirano Tomoyuki T Ogi Takashi T Okuyama Kikuo K

ACS omega 20180813 8

Degrading organic dyes via catalytic processes for waste water purification is an important research topic from the environmental conservation point of view. Herein, the catalytic performance of tungsten blue oxide (WO x ) nanoparticles was investigated systematically by varying the reduction temperature. The optimum reduction temperature to obtain the most stable WO x phase was obtained when plasma-synthesized WO3 nanoparticles were thermally reduc ...[more]

PMID: 31459029

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