Microcrystalline cellulose-based, nitrogen-doped carbon nanoflakes for adsorption of uranium and thorium†

IF 3.1 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Reaction Chemistry & Engineering Pub Date : 2025-05-06 DOI:10.1039/D4RE00613E

Kiran Gupta, Ruchi Aggarwal, Manish Sharma, Ranju Yadav, Ragini Gupta, Gunnar Westman and Sumit Kumar Sonkar

引用次数: 0

Abstract

Nitrogen-doped carbon nanoflakes (N-CNFs) were synthesized via a simple acid-assisted carbonization process using microcrystalline cellulose (MCC) and urea. The as-synthesized N-CNFs were used for the adsorption of simulated radioactive nuclides such as uranium [U(VI)] and thorium [Th(IV)]. Under optimized experimental conditions, N-CNFs removed ≈45.6 and ≈48.7 ppm of U(VI) and Th(IV), respectively. U(VI) and Th(IV) adsorption followed the Langmuir and pseudo-second-order kinetic models. The effect of pH, concentration, and loading capacity was also explored. Furthermore, adsorption–desorption studies were conducted to evaluate the recyclability of N-CNFs as an adsorbent, which demonstrated good recyclability efficiency for four cycles.

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微晶纤维素基，氮掺杂碳纳米片对铀和钍†的吸附

以微晶纤维素（MCC）和尿素为原料，采用简单的酸助碳化工艺合成了氮掺杂碳纳米片（N-CNFs）。合成的N-CNFs用于吸附铀[U(VI)]和钍[Th(IV)]等模拟放射性核素。在优化的实验条件下，N-CNFs对U（VI）和Th（IV）的去除率分别为≈45.6和≈48.7 ppm。U（VI）和Th（IV）的吸附符合Langmuir和拟二级动力学模型。还探讨了pH、浓度和负载能力的影响。此外，通过吸附-解吸研究对N-CNFs作为吸附剂的可回收性进行了评价，结果表明，N-CNFs在4个循环中具有良好的可回收性。

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来源期刊

Reaction Chemistry & Engineering Chemistry-Chemistry (miscellaneous)

CiteScore

6.60

自引率

7.70%

发文量

227

期刊介绍： Reaction Chemistry & Engineering is a new journal reporting cutting edge research into all aspects of making molecules for the benefit of fundamental research, applied processes and wider society. From fundamental, molecular-level chemistry to large scale chemical production, Reaction Chemistry & Engineering brings together communities of chemists and chemical engineers working to ensure the crucial role of reaction chemistry in today’s world.