Journal
NEW JOURNAL OF CHEMISTRY
Volume 42, Issue 14, Pages 12054-12061Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nj02327a
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Funding
- National Natural Science Foundation of China [21373107]
- Key Scientific Research Project of Higher Education of Henan [16A150036, 16A150055]
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A silver/silver molybdate (Ag/Ag2MoO4) composite was successfully synthesized through in situ reduction of Ag2MoO4 using NaBH4 at room temperature and characterized by various analytical techniques. The photocatalytic activity of the composite was evaluated by the degradation of the colorless antibiotic agent ciprofloxacin (CIP) under visible light irradiation. The experimental results indicated that the as-fabricated Ag/Ag2MoO4 composite showed greatly enhanced photocatalytic performance compared with pure Ag2MoO4, and exhibited high photodegradation efficiency with 99.5% removal of CIP in 60 min and excellent stability in five consecutive cycles. The improved photocatalytic performance could be mainly attributed to the surface plasmon resonance (SPR) effect of the Ag nanoparticles in the region of visible light. The active species trapping experiments and ESR analysis suggested that OH and h(+) were the main active species for the photocatalytic degradation. Eventually, a possible photocatalytic mechanism was proposed.
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