{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T23:32:46Z","timestamp":1792798366457,"version":"4.5.0"},"reference-count":42,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,3,20]],"date-time":"2024-03-20T00:00:00Z","timestamp":1710892800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>In order to realize the effective separation of palladium from high-level liquid waste (HLLW), a ligand-supported adsorbent (NTAamide(C8)\/SiO2-P) was prepared by the impregnation method in a vacuum. The SiO2-P carrier was synthesized by in situ polymerization of divinylbenzene and styrene monomers on a macroporous silica skeleton. The NTAamide(C8)\/SiO2-P adsorbent was fabricated by impregnating an NTAamide(C8) ligand into the pore of a SiO2-P carrier under a vacuum condition. The adsorption performance of NTAamide(C8)\/SiO2-P in nitric acid medium has been systematically studied. In a solution of 0.2 M HNO3, the distribution coefficient of Pd on NTAamide(C8)\/SiO2-P was 1848 mL\/g with an adsorption percentage of 90.24%. With the concentration of nitric acid increasing, the adsorption capacity of NTAamide(C8)\/SiO2-P decreases. Compared to the other 10 potential interfering ions in fission products, NTAamide(C8)\/SiO2-P exhibited excellent adsorption selectivity for Pd(II). The separation factor (SFPd\/other metals &gt; 77.8) is significantly higher than that of similar materials. The interference of NaNO3 had a negligible effect on the adsorption performance of NTAamide(C8)\/SiO2-P, which maintained above 90%. The adsorption kinetics of Pd(II) adsorption on NTAamide(C8)\/SiO2-P fits well with the pseudo-second order model. The Sips model is more suitable than the Langmuir and Freundlich model for describing the adsorption behavior. Thermodynamic analysis showed that the adsorption of Pd(II) on NTAamide(C8)\/SiO2-P was a spontaneous, endothermic, and rapid process. NTAamide(C8)\/SiO2-P also demonstrated good reusability and economic feasibility.<\/jats:p>","DOI":"10.3390\/nano14060544","type":"journal-article","created":{"date-parts":[[2024,3,20]],"date-time":"2024-03-20T05:56:07Z","timestamp":1710914167000},"page":"544","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Efficient and Selective Removal of Palladium from Simulated High-Level Liquid Waste Using a Silica-Based Adsorbent NTAamide(C8)\/SiO2-P"],"prefix":"10.3390","volume":"14","author":[{"given":"Jiaxuan","family":"Shi","sequence":"first","affiliation":[{"name":"State Key Laboratory of Chemical Resource Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junli","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Resource Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China"},{"name":"Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wentao","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuan","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hui","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianwei","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Resource Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1049","DOI":"10.1080\/01496395.2012.724140","article-title":"Studies on the Separation and Recovery of Palladium from Simulated High Level Liquid Waste (SHLW) Solution with Novel Extractant N,N,N\u2032,N\u2032-tetra (2-ethylhexyl) Dithiodiglycolamide DTDGA","volume":"48","author":"Ruhela","year":"2013","journal-title":"Sep. 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