access icon free Controlled synthesis of Ag3PO4 microparticles with different morphologies and their photocatalytic degradation of rhodamine B under white light-emitting diode irradiation

A facile morphological specific precipitation method by volumetric control of the precursors has been demonstrated to achieve tetrapod-like and dodecahedron-like Ag3PO4 microparticles, which show superior visible-light responsive of photocatalytic activity when comparing to TiO2 (P25). This study also reveals that the tetrapod-like Ag3PO4 microparticles exhibit significantly higher photocatalytic activity (95.6% degradation within 20 min, k: 0.1937 min−1) than the dodecahedrons (78.9% degradation within 30 min, k: 0.0593 min−1) for the degradation of rhodamine B (RhB, 10 ppm) under low-power white light-emitting diode irradiation (300 mW cm−2), which may be attributed to the high reactivity of {110} facets. Moreover, holes and superoxide radicals were the main reactive species involved in RhB degradation.

Inspec keywords: water pollution control; dyes; materials preparation; photocatalysis; photolysis; photocatalysts; silver compounds; precipitation (physical chemistry); wastewater treatment

Other keywords: rhodamine B; dodecahedrons; Ag3PO4; low-power white light-emitting diode irradiation; volumetric precursor control; photocatalytic degradation; facile morphological specific precipitation method; superoxide radicals; controlled synthesis; tetrapod-like microparticles; RhB degradation

Subjects: Photolysis and photodissociation by IR, UV and visible radiation; Heterogeneous catalysis at surfaces and other surface reactions; Water (environmental science); Environmental issues; Other methods of preparation of materials; Industrial processes

http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2018.5561
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content/journals/10.1049/mnl.2018.5561
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