Cu-incorporated micro-mesoporous biochar for enhanced adsorption and persulfate-driven degradation of organic pollutants

IF 11 1区工程技术 Q1 ENGINEERING, CHEMICAL

npj Clean Water Pub Date : 2026-06-25 DOI:10.1038/s41545-026-00581-8

Chohee Yang, Youn-Jun Lee, Seong-Jik Park, Doyeon Lee, Eilhann E. Kwon

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Abstract

Integrating adsorption with heterogeneous persulfate activation represents a promising strategy for the removal of persistent organic pollutants (POPs) from aqueous systems. Nonetheless, the facile synthesis of bifunctional materials that simultaneously exhibit high adsorption capacity and strong catalytic activity remains challenging. In this study, Cu-incorporated micro/mesoporous biochar was synthesized via CO2-assisted thermochemical treatment of Cu-impregnated wood chips (WC). Characterization confirmed the formation of a hierarchical micro/mesoporous structure and the presence of abundant Cu active sites in biochar (CuWCB (CO2)). Performance evaluation demonstrated that CuWCB (CO2) achieved a higher bisphenol A (BPA) adsorption efficiency (90.8%) than its N2-derived counterpart (15.2%). Upon peroxydisulfate addition, the residual BPA was completely degraded, achieving >99% removal. In addition to its water treatment performance, the CO2-assisted thermochemical treatment enhanced syngas production. This study demonstrates an integrated strategy that couples bifunctional material synthesis with thermochemical energy recovery.

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铜掺杂微介孔生物炭对有机污染物的增强吸附和过硫酸盐驱动降解

将吸附与非均相过硫酸盐活化相结合是去除水系统中持久性有机污染物（POPs）的一种很有前途的策略。然而，快速合成同时具有高吸附能力和强催化活性的双功能材料仍然具有挑战性。在本研究中，通过co2辅助热化学处理cu浸渍木屑（WC），合成了cu掺入微孔/介孔生物炭。表征证实了生物炭（CuWCB (CO2)）中形成了层次微孔/介孔结构，并且存在丰富的Cu活性位点。性能评价表明，CuWCB （CO2）对双酚a （BPA）的吸附效率（90.8%）高于n2衍生的双酚a （BPA）的吸附效率（15.2%）。添加过硫酸氢盐后，残留的BPA被完全降解，去除率达到99%。除了水处理性能外，二氧化碳辅助热化学处理还提高了合成气产量。本研究展示了一种双功能材料合成与热化学能量回收相结合的综合策略。

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来源期刊

npj Clean Water Environmental Science-Water Science and Technology

CiteScore

15.30

自引率

2.60%

发文量

审稿时长

5 weeks

期刊介绍： npj Clean Water publishes high-quality papers that report cutting-edge science, technology, applications, policies, and societal issues contributing to a more sustainable supply of clean water. The journal's publications may also support and accelerate the achievement of Sustainable Development Goal 6, which focuses on clean water and sanitation.