Radiation-induced surface modification of silanized silica with n-alkyl-imidazolium ionic liquids and their applications for the removal of ReO4− as an analogue for TcO4−

Porous Cationic Electrospun Fibers with Sufficient Adsorption Sites for Effective and Continuous 99TcO4− Uptake

“…[33] After the quaternization reaction, the peaks at 2946 and 2834 cm -1 that are the typical C-H stretching vibrations of -CH 2 -or -CH 3 groups become stronger because of the reaction with bromoethane. [34,35] The intensity for N-H stretching at 3400 cm -1 is retained, suggesting that most of the bromoethane reacts with tertiary amines on PEI. The structure of PCE fibers was also estimated by solid-state 13 C cross-polarization magic angle spinning (CP/MAS) NMR.…”

3D Ionic Olefin-Linked Conjugated Microporous Polymers for Selective Detection and Removal of TcO4–/ReO4– from Wastewater

“…In addition, the spectral peak of Br 3d (68.07 eV) was not observed in the XPS spectrum of TFPM-EP-Re, implying that ReO 4 – and Br – had ions exchanged on TFPM-EP-Br. In the Re 4f high-resolution spectrum (Figure B), the binding energies of 45.39 and 47.75 eV correspond to Re 4f 7/2 and Re 4f 5/2 , respectively, which indicated that the Re species exists in the form of ReO 4 – . For the sake of further verifying the binding mode of ReO 4 – , the N 1s XPS spectra of TFPM-EP-Br and TFPM-EP-Re were analyzed.…”

“…In the Re 4f high-resolution spectrum (Figure 4B), the binding energies of 45.39 and 47.75 eV correspond to Re 4f 7/2 and Re 4f 5/2 , respectively, which indicated that the Re species exists in the form of ReO 4 − . 39 For the sake of further verifying the binding mode of ReO 4 − , the N 1s XPS spectra of TFPM-EP-Br and TFPM-EP-Re were analyzed. The spectrum revealed that different types of nitrogen-containing functional groups include −C�N, −C− N, and N + in the pyridine ring.…”

Efficient and selective adsorption of Au(iii), Pt(iv), and Pd(ii) by a radiation-crosslinked poly(ionic liquid) gel

“…However, chemical methods are mostly used in the related research, and there are few reports on the preparation of PIL gels by radiation technology to recover metal ions. 28,29…”

“…However, chemical methods are mostly used in the related research, and there are few reports on the preparation of PIL gels by radiation technology to recover metal ions. 28,29 Radiation cross-linking is one of the synthesis methods of gel materials. Compared with the traditional chemical method, the radiation method is simpler, and gels can be obtained in one step without an initiator, and is an efficient, clean, and controllable technology.…”