A sustainable approach to separate and recover indium and tin from spent indium-tin oxide targets

被引：28

作者：

Gu, Shuai ^{[1
]}

Fu, Bitian ^{[2
]}

Dodbiba, Gjergj ^{[1
]}

Fujita, Toyohisa ^{[1
]}

Fang, Baizeng ^{[3
]}

机构：

[1] Univ Tokyo, Grad Sch Engn, Tokyo 1138656, Japan

[2] East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China

[3] Univ British Columbia, Dept Chem & Biol Engn, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada

来源：

RSC ADVANCES | 2017年 / 7卷 / 82期

关键词：

LIQUID-CRYSTAL DISPLAY; LIGHT-EMITTING DEVICES; FLAT-PANEL DISPLAYS; THIN-FILM; SOLVENT-EXTRACTION; RECYCLING INDIUM; LOW-TEMPERATURE; ITO; TRANSPARENT; REDUCTION;

D O I：

10.1039/c7ra11976c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study proposed an innovative method to separate and recover indium and tin from spent indium-tin-oxide (ITO) targets. ITO was first dissolved using concentrated HCl and then the leaching solution was distilled to recycle HCl and crystallize indium and tin ions. Next, the obtained crystals were transferred into SOCl2 solution under refluxing to remove the crystal water. By simply fractionating the mixture, anhydrous indium chloride, tin tetrachloride, and SOCl2 can be separated in a single operation. The recovery rate of InCl3 was ca. 99.6% with a purity of ca. 99.8%, while ca. 98.0% of SnCl4 was recovered with a purity of ca. 99.7%. Both the recovery rates and purities are the highest reported so far. Since all the reagents used in this process were carefully designed, almost all of the reagents can be reused. This is an environmentally friendly, economical and practical method to efficiently recycle ITO targets.

引用

页码：52017 / 52023

页数：7

共 38 条

[1] Transparent conducting, anti-static and anti-static-anti-glare coatings on plastic substrates [J].