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Fabrication of an Ag/Ag2MoO4 plasmonic photocatalyst with enhanced photocatalytic performance for the degradation of ciprofloxacin
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2018-06-05 , DOI: 10.1039/c8nj02327a Jin Li 1, 2, 3, 4 , Feng Liu 1, 2, 3, 4 , Yuanrui Li 4, 5, 6, 7
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2018-06-05 , DOI: 10.1039/c8nj02327a Jin Li 1, 2, 3, 4 , Feng Liu 1, 2, 3, 4 , Yuanrui Li 4, 5, 6, 7
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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.
中文翻译：
具有增强的光催化性能的环丙沙星降解Ag / Ag 2 MoO 4等离子体光催化剂的制备
通过在室温下使用NaBH 4原位还原Ag 2 MoO 4，成功地合成了钼酸银/银（Ag / Ag 2 MoO 4）复合材料，并通过各种分析技术对其进行了表征。通过无色抗生素环丙沙星（CIP）在可见光照射下的降解来评估复合材料的光催化活性。实验结果表明，与纯Ag 2 MoO 4相比，制备的Ag / Ag 2 MoO 4复合材料具有显着增强的光催化性能。，并具有很高的光降解效率，在60分钟内可去除99.5％的CIP，并且在五个连续的循环中具有出色的稳定性。改善的光催化性能可能主要归因于可见光区域中的Ag纳米粒子的表面等离振子共振（SPR）效应。活性物种捕获实验和ESR分析表明，˙OH和h +是光催化降解的主要活性物种。最终，提出了一种可能的光催化机理。
更新日期：2018-07-09
中文翻译：
具有增强的光催化性能的环丙沙星降解Ag / Ag 2 MoO 4等离子体光催化剂的制备
通过在室温下使用NaBH 4原位还原Ag 2 MoO 4，成功地合成了钼酸银/银（Ag / Ag 2 MoO 4）复合材料，并通过各种分析技术对其进行了表征。通过无色抗生素环丙沙星（CIP）在可见光照射下的降解来评估复合材料的光催化活性。实验结果表明，与纯Ag 2 MoO 4相比，制备的Ag / Ag 2 MoO 4复合材料具有显着增强的光催化性能。，并具有很高的光降解效率，在60分钟内可去除99.5％的CIP，并且在五个连续的循环中具有出色的稳定性。改善的光催化性能可能主要归因于可见光区域中的Ag纳米粒子的表面等离振子共振（SPR）效应。活性物种捕获实验和ESR分析表明，˙OH和h +是光催化降解的主要活性物种。最终，提出了一种可能的光催化机理。
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