biostudies-literatureNguyen TTVietnam National University - Ho Chi Minh City11487https://www.ebi.ac.uk/biostudies/studies/S-EPMC8169930biostudies-literatureUnknown11(1)This study reports for the first time on the synthesis of novel resin@P-Ag₂O material and its application for reducing the chloride effect on COD determination of high salinity water. This engineered core-shell nanomaterial with cationic ion exchange resin core and porous Ag₂O shell was prepared by facile ion exchange and silver oxidation method at ambient temperature without using toxic chemicals. The material was characterized by FTIR, XRD, SEM, and SEM-EDX mapping. In the chloride removal test, this material gave a high adsorption capacity of ca. 244 mgCl/gAg at the mild condition with high durability after several adsorption-desorption cycles. Moreover, resin@P-Ag₂O was applied for removing chloride in water to improve the accuracy of the SMEWW 5220C:20Scientific reportsSynthesis of a novel porous Ag₂O nanomaterial on ion exchange resin and its application for COD determination of high salinity water.PMC8169930A2020-16-01Nguyen TTLe NHNguyen NHNguyen Thi QAfalseSynthesis of a novel porous Ag₂O nanomaterial on ion exchange resin and its application for COD determination of high salinity water.This study reports for the first time on the synthesis of novel resin@P-Ag₂O material and its application for reducing the chloride effect on COD determination of high salinity water. This engineered core-shell nanomaterial with cationic ion exchange resin core and porous Ag₂O shell was prepared by facile ion exchange and silver oxidation method at ambient temperature without using toxic chemicals. The material was characterized by FTIR, XRD, SEM, and SEM-EDX mapping. In the chloride removal test, this material gave a high adsorption capacity of ca. 244 mgCl/gAg at the mild condition with high durability after several adsorption-desorption cycles. Moreover, resin@P-Ag₂O was applied for removing chloride in water to improve the accuracy of the SMEWW 5220C:202021-01-01T00:00:00Z2021 Jun2025-04-26T22:58:54.09Z2022-02-10T13:35:31.277ZS-EPMC81699303407516710.1038/s41598-021-91004-w