Extensive removal of thallium by graphene oxide functionalized with aza-crown ether

Abstract

Thallium (Tl) is a highly toxic heavy metal, and its pollution and remediation in aquatic environments has attracted considerable attention.

Template-Regulated Bimetallic Sulfide Nanozymes with High Specificity and Activity for Visual Colorimetric Detection of Cellular H2O2

“…The high-resolution N 1s spectrum consisted of one peak, which corresponds to tricoordinated nitrogen atoms (Figure 2e,j). 42,43 As can be seen from Figure S2, the binding energies of S 2p 3/2 and S 2p 1/2 at 161.5 and 163.9 eV are assigned to the metal−sulfur bond in Ni−S and Co−S. Also, the XPS analysis data for pure PVP and CTAB (Figure S3) were also obtained.…”

“…For the Co 2p patterns, the two spin–orbit doublets at 782.7/798.2 and 792.8 eV are assigned to Co 2+ and Co 3+ , respectively (Figure c,g). − The binding energy at 284.5 eV of C 1s (Figure d,i) is attributed to the C–C bond in PVP and CTAB, and that at 287.0 eV is ascribed to the C–N/CO bond in PVP. The high-resolution N 1s spectrum consisted of one peak, which corresponds to tricoordinated nitrogen atoms (Figure e,j). , As can be seen from Figure S2, the binding energies of S 2p 3/2 and S 2p 1/2 at 161.5 and 163.9 eV are assigned to the metal–sulfur bond in Ni–S and Co–S. Also, the XPS analysis data for pure PVP and CTAB (Figure S3) were also obtained.…”