Study of lanthanum-based colloidal sols formation

A Novel Chemical Route to Prepare La2Zr2O7 Pyrochlore

“…Hydrolysis begins when the pH is greater than 6 in which two basic species, [La(OH)] 2+ and [La(OH) 2 ] + , predominate in this short pH range (pH = 6.0–8.5). Hydroxide precipitation is complete at pH ~10 . In this study, the aqueous solution was kept between pH = 8.0 and 8.3, where La is in the form of soluble cationic species, and Zr is stabilized with intrinsic anionic citric ligands.…”

“…Hydroxide precipitation is complete at pH~10. 20,[32][33][34] In this study, the aqueous solution was kept between pH = 8.0 and 8.3, where La is in the form of soluble cationic species, and Zr is stabilized with intrinsic anionic citric ligands. The selection of this pH range ensures (La 3+ )aq does not form La(OH) 3 and the intrinsic stabilization groups on Zr are in the form of ÀCOO À .…”

Synthesis, characterization, shape-preserved transformation, and optical properties of La(OH)3, La2O2CO3, and La2O3 nanorods

“…Lanthanum, the lightest element in the lanthanide series, has been widely studied in its oxide, hydroxide, oxycarbonate, phosphate, or oxychloride forms and has been extensively applied in optoelectronic devices [1][2][3], phosphors [4], solid electrolyte [5], catalytic [6][7][8][9][10], sorbent [11], and gas sensor [12]. Lanthanum hydroxide (La(OH) 3 ) is one of the novel rare earth compounds, and has been used in many fields, such as ceramic, superconductive materials, hydrogen storage materials, electrode materials, etc., especially catalyst and sorbent materials [13,14].…”

Tetranuclear Lanthanide Aqua Hydroxo Complexes with Macrocyclic Ligand Cucurbit[6]uril

“…[6][7][8][9][10][11][12][13][14][15][16][17] Some of these compounds hold promise as precursors in metalorganic chemical vapor deposition and sol-gel technology. [18][19][20] Interest in gadolinium(III) nanoclusters with tunable electron relaxation behavior can be conceived for magnetic resonance imaging applications. [21][22][23] Great efforts have been focused on the europium(III) nanoclusters to construct luminescent nanodevices.…”