Fabrication of Dy2Ti2O7 nanocrystalline at 700°C and its photocatalytic activity

Synthesis and characterization of Er2Sn2O7 nanocrystals by salt-assistant combustion method

“…Generally, the larger A cation retains the eight-fold coordination, while the smaller B cation is in six-fold coordination. Pyrochlore oxides A 2 B 2 O 7 have received considerable attention in recent years, due to their interesting thermal, electrical, optical, magnetic and catalytic properties [1][2][3][4][5][6]. Lanthanide stannates (Ln 2 Sn 2 O 7 , Ln = Y, La-Lu), as one of various pyrochlore oxides, have attracted considerable attention in recent years, due to their wide applications as ionic/electric conductors [7], photocatalysts [8] and phosphors [9].…”

Sol–gel synthesis and crystallization kinetics of dysprosium-titanate Dy2Ti2O7 for photonic applications

“…Such an arrangement brings variety of magnetic properties that depend on the RE incorporated within the pyrochlore crystal lattice [3]. Dysprosium titanate Dy 2 Ti 2 O 7 has been particularly studied for its spin-ice behavior [4] and recently it has attracted attention as a novel photo-catalyzer [5]. Such potential applications place high demands on the quality of prepared materials.…”

“…Combination of the sol-gel approach with the organic ligands, i.e. citric acid [5] or stearic acid [9] allowed to prepare highly uniform nanocrystalline Dy 2 Ti 2 O 7 at calcination temperatures lower than 800 °C. Despite the fact that the lowered calcination temperature is a great technological advantage, none of introduced soft-chemical approaches has been successfully used to prepare transparent thin films of Dy 2 Ti 2 O 7 .…”

Anti-site disorder and physical properties in microwave synthesized RE2Ti2O7 (RE = Gd, Ho) pyrochlores

“…mechanical milling. 19,[23][24][25][26] However, these methods usually require a second calcination step in a conventional furnace to obtain phase pure materials and the total reaction time increases. [20][21][22] In the last decades several alternative routes have been proposed such as microwave (MW) synthesis, molten salt mediated synthesis, co-precipitation of hydroxides, sol-gel and citrate based methods, and mechanical milling, where the time and temperature requirements for synthesis are significantly reduced.…”