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Synthesis and characterization of nanoscaled BiPO4 and BiPO4:Tb

“…BiPO 4 has been claimed for several aspects of technical application, including catalysis [1,2], orthophosphate ion sensing by means of a quartz-crystal microbalance [3], as well as coprecipitation and separation of radioactive actinides [4,5]. Especially for catalysis BiPO 4 is a promising candidate and has been used, e.g., for a reduction of butyraldehyde to n-butanol [6].…”

“…Especially for catalysis BiPO 4 is a promising candidate and has been used, e.g., for a reduction of butyraldehyde to n-butanol [6]. Moreover, BiPO 4 has been denoted as a host lattice for incorporation and luminescence of rare-earth ions [7,8]. Structurally, BiPO 4 has been described with three different modifications, whereof the monazite-type structure is thermodynamically most favored [9][10][11].…”

“…Structurally, BiPO 4 has been described with three different modifications, whereof the monazite-type structure is thermodynamically most favored [9][10][11]. On the nanoscale, rod-or wire-type BiPO 4 has been recently synthesized via sonochemical [12] and CVD [13] methods. Interestingly, spherical shapes with uniform size and a low degree of agglomeration have not been addressed, yet.…”

“…Finally, the product was dried under reduced pressure (10 -3 mbar, 1 h, 70°C). Nanoscale BiPO 4 :Tb (1 mol%) was realized by addition of 100 mg Tb(NO 3 ) 3 Á 6 H 2 O to BiI 3 . Fractions of the final product were calcinated in a chamber furnace in air at 750°C (5 min) and 800°C (40 min) in order to study temperature-driven crystallinity, degree of agglomeration, as well as luminescence.…”

“…Particle size, particle shape, and degree of agglomeration of as-prepared BiPO 4 were validated for powder samples as well as for redispersed material. SEM (Fig.…”