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Materials Research

versão impressa ISSN 1516-1439versão On-line ISSN 1980-5373

Resumo

HUANG, Kai et al. One-step Synthesis of Ag3PO4/Ag Photocatalyst with Visible-light Photocatalytic Activity. Mat. Res. [online]. 2015, vol.18, n.5, pp.939-945. ISSN 1980-5373.  http://dx.doi.org/10.1590/1516-1439.346614.

A highly efficient photocatalyst Ag3PO4/Ag was prepared by a one-step low temperature chemical bath method. The reflectance spectra (DRS) indicated Ag3PO4/Ag had strong absorption in visible light region. The synthesized Ag3PO4/Ag photocatalyst was used as the efficient photocatalysts for the photocatalytic degradation of Rhodamine B (RhB) under visible-light illumination which showed almost complete degradation (~ 98%) of RhB dye in 90 min. The negative surface of Ag3PO4/Ag photocatalyst also promoted the degradation of a cationic dye like methylene bule (MB; 78% in 90min), while the performance against an anionic dye like methyl orange was poorer (MO; 40% in 90 min). Compared to the pure Ag3PO4 photocatalyst, the Ag3PO4/Ag photocatalyst showed the enhanced visible light photocatalytic informance. The excellent photocatalytic performance is mainly ascribed to the surface plasmon resonance of Ag nanoparticles and a large negative charge of PO43- ions.

Palavras-chave : Ag3PO4/Ag; chemical synthesis; photocatalysis; visible light.

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