Sulfur–oleylamine copolymer synthesizedviainverse vulcanization for the selective recovery of copper from lithium-ion battery E-waste

Abstract

Elemental sulfur (S8) is an abundant and inexpensive by-product of petroleum refining. Polymeric sulfur is thermodynamically unstable and depolymerizes back to S8 with time, which limits its applications and causes...

Colloidal Synthesis of P‐Type Zn3As2 Nanocrystals

“…This copolymerization process between the As polyanions and OLAM is similar to the behavior observed for sulfur polyanions and OLAM. [47] In other words, under strong reductive conditions, As anions that are reduced by reducing agents can couple to form polyanions, and, simultaneously, the As polyanions generate radicals to crosslink with the OLAM olefin moieties (Scheme 1). [29] After synthesizing the highly crystalline and stoichiometric Zn 3 As 2 NCs, we investigated their electrical characteristics by fabricating top-contact bottom-gated FETs with NCs as active layers (Figure 5a).…”

“…This copolymerization process between the As polyanions and OLAM is similar to the behavior observed for sulfur polyanions and OLAM. [ 47 ] In other words, under strong reductive conditions, As anions that are reduced by reducing agents can couple to form polyanions, and, simultaneously, the As polyanions generate radicals to cross‐link with the OLAM olefin moieties ( Scheme ). [ 29 ]…”

Unravelling the intricacies of solvents and sulfur sources in colloidal synthesis of metal sulfide semiconductor nanocrystals

“…But oleylamine has a double bond at the 9th carbon position. This double bond is also reactive towards sulfur as suggested by Sahadevan et al 36 Through a processes called ''inverse vulcanization'' they synthesized a sulfur-oleylamine copolymer (Fig. 1g).…”

“…1g). 36 To prepare this copolymer they melted sulfur (mp: 159 1C), which causes the S8 ring to open and form the sulfur diradical, 37,38 and added oleylamine. Stirring this solution at 180 1C for 8 minutes resulted in the copolymer.…”