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Nitric-oxidized vs alkaline-activated carbon nanomaterials for thorium(IV): mechanism-resolved adsorption and reuse.

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Bibliographic Details
Title: Nitric-oxidized vs alkaline-activated carbon nanomaterials for thorium(IV): mechanism-resolved adsorption and reuse.
Authors: Abu Shawer, Akram I.1 (AUTHOR), Alnasra, Omar A.1 (AUTHOR) Amr9170169@jo.edu.jo, Khalili, Fawwaz I.1 (AUTHOR), Hamzeh, Ehab A.1 (AUTHOR)
Source: Journal of Radioanalytical & Nuclear Chemistry. Apr2026, Vol. 335 Issue 4, p2671-2689. 19p.
Subject Terms: *Oxidation, *Alkalinization, *Radioisotopes, *Physisorption, *Porosity, *Carbon foams, *Surfaces (Technology)
Abstract: Nanostructured carbons derived from olive pomace were tailored through chemistry-focused oxidation (Bio-N) or texture-focused alkaline activation (Bio-O) to disentangle how surface functionality and pore architecture govern thorium(IV) capture from acidic water. Structure–property analysis revealed that Bio-O provides faster access to binding domains, whereas Bio-N offers stronger temperature-enhanced site affinity. Both materials showed spontaneous, endothermic uptake and effective acid regenerability, with distinct reloading behaviors reflecting their differing chemistries. The study highlights a dual design principle—chemistry-first for capacity leverage and texture-first for rapid capture—establishing olive–pomace carbons as promising low-cost media for radionuclide polishing. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Description
Abstract:Nanostructured carbons derived from olive pomace were tailored through chemistry-focused oxidation (Bio-N) or texture-focused alkaline activation (Bio-O) to disentangle how surface functionality and pore architecture govern thorium(IV) capture from acidic water. Structure–property analysis revealed that Bio-O provides faster access to binding domains, whereas Bio-N offers stronger temperature-enhanced site affinity. Both materials showed spontaneous, endothermic uptake and effective acid regenerability, with distinct reloading behaviors reflecting their differing chemistries. The study highlights a dual design principle—chemistry-first for capacity leverage and texture-first for rapid capture—establishing olive–pomace carbons as promising low-cost media for radionuclide polishing. [ABSTRACT FROM AUTHOR]
ISSN:02365731
DOI:10.1007/s10967-026-10806-2