کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6454372 1418815 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research paperSynthesis and photocatalytic activity of ultrafine Ag3PO4 nanoparticles on oxygen vacated TiO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Research paperSynthesis and photocatalytic activity of ultrafine Ag3PO4 nanoparticles on oxygen vacated TiO2
چکیده انگلیسی


- A facile approach to synthesize ultrafine Ag3PO4 nanoparticles as small as 2.6 nm.
- The ultrafine Ag3PO4 loaded TiO2-OV exhibit a high photocatalytic activity.
- A visible-light-driven direct Z-scheme system formed on Ag3PO4/TiO2-OV.

Despite high activity for photocatalytic degradation of organic dyes from water, nanoscale Ag3PO4 photocatalyst particles are difficult to synthesize. As reported in literature, Ag3PO4 particle sizes for photocatalytic degradation of water pollutants are normally larger than 100 nm. This research reports a facile and reproducible method for the synthesis of the ultrafine and uniform Ag3PO4 nanoparticles loaded on the oxygen vacated TiO2 (TiO2-OV) with average particle size as small as 2.6 nm. All obtained Ag3PO4 particles can be completely loaded onto TiO2-OV support to form Ag3PO4/TiO2-OV composite photocatalysts. The prepared Ag3PO4/TiO2-OV photocatalyst exhibits much higher visible light photocatalytic activity than those of pure Ag3PO4 or Ag3PO4/TiO2 photocatalysts for the degradation of rhodamine b (Rh B) and phenol in water. After depositing thin layers of AgI on Ag3PO4 ultrafine Ag3PO4 nanoparticles, the new AgI-Ag3PO4/TiO2-OV composite photocatalysts not only show much higher photocatalytic activity, but they are also more stable than pure Ag3PO4 catalyst. This new synthesis method will provide guidelines for the preparation of ultrafine nanoparticles and highly active photocatalysts for treatment of water pollution or production of hydrogen from water splitting/reducing.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 205, 15 May 2017, Pages 489-497
نویسندگان
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