Synergic coordination and precipitation effects induced by free carboxyl for separation of iron(III) and nickel(II) in zirconium-metal-organic framework

A cross-linkable phthalonitrile derivative as a precursor to synthesize nitrogen-doped carbon nanodots for Ni ion detection

“…After the N-CD is used for Ni(II) detection, the absorption peaks at 3134 cm À1 and 1595 cm À1 shift to 3141 cm À1 and 1620 cm À1 , respectively, which implies that the carboxyl group is coordinated with Ni 2+ . 49,50 It should be noted that the absorption peak at 1384 cm À1 shifts to 1388 cm À1 , indicating that the nitro group coordinated with Ni 2+ as well. 51 Moreover, Fig.…”

Research progress of MXenes and layered double hydroxides for supercapacitors

“…Naguib et al 53 also found that ordered double transition metal carbides, such as Mo 2 TiC 2 T x , Cr 2 TiC 2 T x , and Mo 2 Ti 2 C 3 T x , have added more than 25 members to the Mxene family. [54][55][56][57][58][59][60] At present, more than 70 kinds of Mxene precursors have been explored, but the most widely studied is still the Ti 3 C 2 T x material. 40,[61][62][63][64][65][66][67][68] MXenes are widely used as electrodes for supercapacitors owing to their excellent physicochemical properties.…”

Self‐assembly preparation of Zn2+‐immobilized silica hybrid monolith and application in solid‐phase micro‐extraction of β‐agonists

“…The extraction efficiency of the Zn 2+ -immobilized chitosan@silica hybrid monolith was preferable than the other two (Figure S1), which indicates the extraction capacity of the monolith was reinforced by the introduction of Zn 2+ . And the coordination interactions of Zn 2+ with ─OH or ─NH 2 would dominate the extraction performance of the prepared monolith [29][30][31].…”