Issue 55, 2021

Al-doped H2TiO3 ion sieve with enhanced Li+ adsorption performance

Abstract

H2TiO3 (HTO) is considered to be one of the most promising adsorbents for lithium recovery from aqueous lithium resources duo to its highest theoretical adsorption capacity. However, its actual adsorption capacity is much lower owing to its unknown structure and incomplete leaching of lithium. After Al is doped into H2TiO3 (HTO-Al), the adsorption capacity of HTO-Al is 32.12 mg g−1 and the dissolution of Ti is 2.53%. HTO-Al has good adsorption selectivity, and all the separation factors α are ≫1. Furthermore, HTO-Al also exhibits good cyclic stability and solubility resistance. After 5 cycles, the adsorption capacity remains 29.3 mg g−1 and the dissolution rate is 1.7%. Therefore, HTO-Al has potential application value for recovering Li+ from aqueous lithium resources.

Graphical abstract: Al-doped H2TiO3 ion sieve with enhanced Li+ adsorption performance

Supplementary files

Article information

Article type
Paper
Submitted
31 Aug 2021
Accepted
18 Oct 2021
First published
28 Oct 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 34988-34995

Al-doped H2TiO3 ion sieve with enhanced Li+ adsorption performance

X. Dai, H. Zhan, Z. Qian, J. Li, Z. Liu and Z. Wu, RSC Adv., 2021, 11, 34988 DOI: 10.1039/D1RA06535A

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