Synthesis and Application of One-Dimensional La(OH)₃ Nanostructures: An Overview

Table 1

Summary of preparation process of La(OH)₃ nanostructure by precipitation.

Reference	Preparation method	Morphology	Mechanism of formation
[13]	① 0.004 M CTAB was mixed with distilled deionized water.; ② Then 10 mL NH3·H2O was added into the CTAB solution.; ③ 0.04 M LaCl3·7H2O was added into it and stirred for 2 h.	Nanorods	La^3+ + 3OH^−→La(OH)3.
[15]	① La(NO3)3 was dissolved (solution A).; ② Diethylenetriamine was dissolved (solution B).; ③ The solution A was heated at 90°C and solution B was dropped into solution A and then kept for 3 h.	Dendrite-like La(OH)3 nanostructures	La^3+ + 3OH^−→La(OH)3.
[16]	① 5 mM of each CTAB, TBAB, and La(NO3)3·6H2O was dissolved.; ② 1.215 mL of hydrazine hydrate was added rapidly to this reaction mixture.	Nanorods	N2H4 + H2O ↔ + OH^−; La^3+ + OH^−→La(OH)3