@article{Zhang2026, 
author = {Junjie Zhang and Guangyang Li and Shibiao Zhang and Jingai Shao and Xiong Zhang and Youwen Liu and Pavel Krivoshapkin and Elena Krivoshapkina and Shihong Zhang and Hanping Chen and Haiping Yang},
title = {Facile modulation of hierarchical structures in biomass-derived carbon via metal–organic framework-mediated assembly for enhanced oxygen and carbon dioxide reduction reactions},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {2},
pages = {94908149},
keywords = {oxygen reduction, CO2 reduction, directed assembly, biomass-derived carbon, controllable microstructure},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94908149},
doi = {10.26599/NR.2025.94908149},
abstract = {Rationally modulating the hierarchical structure of biomass-derived carbon while ensuring developed pore structure and effective doping is imperative for its high-value utilization, but remains challenging. Herein, a three-dimensional (3D) hierarchical flower-like carbon with high surface area and N-doping was synthesized through a directed assembly and carbonization strategy, where biomass serves as a template and support during zeolitic imidazolate framework-8 (ZIF-8) precursors self-assembly. Benefiting from the regularity and abundant porosity of flower-like structure, and unique electronic properties by nitrogen-doping, the flower-like carbon possesses more exposed and heteroatom homogeneously distributed active surface, thus exhibiting oxygen reduction reaction (ORR) activity comparable to that of commercial Pt/C catalysts. Theoretical calculation results reveal that this ordered N-doped carbon lowers the reaction free energy and improves its ORR activity. In addition to being directly used for ORR, the flower-like carbon is also suitable as a substrate for dispersed Ni-doping in CO2 electroreduction. The prepared Ni-doped flower-like carbon exhibits superior CO Faraday efficiency (91%) and long-term stability (48 h) compared to other Ni-doped carbons. This work may provide insights into constructing biomass-derived carbon with tailored hierarchical structures for diverse energy-related applications.}
}