Bifunctional Energy-Environment Engineering of Biomass Valorization to Enable Sustainable Zinc-Ion Hybrid Capacitor and Fenton-Like Catalytic Reaction.

利用生物质资源化进行双功能能源-环境工程，以实现可持续的锌离子混合电容器和类芬顿催化反应

Jun Guo, Pengfei Zhou, Yuanchen Zhu, Shiman Chen, Shenao Yuan, Xiao Xiao, Kaifu Huo, Feng Peng, Jikun Xu (2026) Bifunctional Energy-Environment Engineering of Biomass Valorization to Enable Sustainable Zinc-Ion Hybrid Capacitor and Fenton-Like Catalytic Reaction. Small (IF: 12.1) 2 区 e12979

Abstract

The multifunctional waste-free valorization of biomass is urgently needed to shape the carbon-neutral future of sustainable energy storage and water purification, yet it is still suffering from the dilemma of its complex structures and molecular heterogeneities. This work integrates alkaline sulfite fractionation with deep eutectic solvent neutralization to achieve a stepwise conversion of bamboo into bifunctional energy-environment materials. As an electrode of zinc-ion hybrid capacitors, the hierarchically-porous lignin-based cathode with defect-rich architecture delivers an exceptional energy density of 136.1 Wh kg-1 at 900 W kg-1 with outstanding rate capability and long-term cycling stability (84.4% over 10 000 cycles), owing to the enhanced affinity of Zn2+ by Fe, N, and S co-doping. Beyond that, the carbonized pulp-fiber catalysts featuring alkali-etched mass-transfer channels and cobalt-incorporated active-centers demonstrate efficient Fenton-like water remediation, including superior antibiotic adsorption and percarbonate activation (over 85% removal of tetracycline, oxytetracycline, and chloroquine-phosphate at 100 mg L-1), robust anions anti-interference, and durability. Mechanistic and theoretical investigations reveal that the synergistic degradation involves surface-binding radical generation, 1O2, interfacial electron transfer, and adsorption-intensified oxidation, varying with the pollutant physicochemical properties of half-wave potential and molecular orbital energy. This work expands a practical closed-loop lignocellulose platform of bringing advanced functions into biomass-energy-water nexus fields.© 2026 Wiley‐VCH GmbH.

生物质的多功能、无废料增值利用对于构建可持续能源存储和水净化领域的碳中和未来至关重要，但其复杂的结构和分子异质性仍然是其面临的一大难题。本研究将碱性亚硫酸盐分馏与深共熔溶剂中和相结合，实现了竹材逐步转化为双功能能源-环境材料。作为锌离子混合电容器的电极，这种具有缺陷丰富结构的分级多孔木质素基正极材料在900 W kg⁻¹的功率密度下展现出136.1 Wh kg⁻¹的优异能量密度，同时具有出色的倍率性能和长期循环稳定性（10000次循环后容量保持率为84.4%），这主要归功于Fe、N和S共掺杂增强了Zn²⁺的亲和力。此外，具有碱蚀刻传质通道和钴掺杂活性中心的碳化纸浆纤维催化剂展现出高效的类芬顿水体修复能力，包括优异的抗生素吸附和过碳酸盐活化（在100 mg L⁻¹浓度下，四环素、土霉素和磷酸氯喹的去除率超过85%）、强大的阴离子抗干扰能力和耐久性。机理和理论研究表明，协同降解过程涉及表面结合自由基的生成、¹O₂的产生、界面电子转移和吸附强化氧化，这些过程随污染物半波电位和分子轨道能量等物理化学性质而变化。这项工作拓展了将先进功能引入生物质-能源-水资源关联领域的实用闭环木质纤维素平台。© 2026 Wiley‐VCH GmbH.

Links

http://www.ncbi.nlm.nih.gov/pubmed/41983349
http://dx.doi.org/10.1002/smll.202512979

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