Hydrothermal synthesis of tellurium nanorods by using recovered tellurium from waste electronic devices. Issue 6 (15th April 2019)

• Record Type: Journal Article
• Authors: So, Hyeongsub; Yoo, Juyeon; Ryu, Keunhyuk; Yang, MinHo; Lee, Kun-Jae
• Is Part Of: Ceramics international. Volume 45:Issue 6(2019)
• Page Start: 7226
• Page End: 7231
• Publication Date: 2019-04-15
• Subjects: Grain growth -- Powders: chemical preparation -- Chemical properties -- Sensors -- Recycling; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.01.003
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Tellurium (Te) nanostructures with controlled morphology have received the considerable attention in various applications owing to tunable optic, thermoelectric, photoelectronic, piezoelectric, and electrochemical properties. Herein, we introduce the cost-effective and eco-friendly synthesis of Te nanorods (Te NRs) from end of life electronic devices via hydrothermal methods. The Te NRs show the average diameter of 44.6 nm and a length of 358 nm in presence of polyvinylpyrrolidone, as a stabilizing agent. Moreover, the bismuth and intact p-type semiconductor (i.e., Bi0.5 Sb1.5 Te3 ) are selectively recovered as intermediated products. The Te NRs exhibit the NO2 gas sensing properties with concentration as low as 1 ppm at room temperature and fast response/recovery times of 1.59 and 2.10 s at 1 ppm, respectively. We believe that this powerful approach can be expanded to not only selective recovery of valuable materials but synthesis of various nanomaterials from waste electronic devices.