High-performance sorbents from ionic liquid activated walnut shell carbon: an investigation of adsorption and regeneration.

RSC Adv · 2023 · PMC10372474 · PMID 37520095

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a decreasing trendno p-value reported

As the reaction progresses, the content of oxygen-containing functional groups displays a decreasing trend.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.