Yingjie Qiao; Yang Sun; Jianlv Cui; Zhaolu Yin; Ting Zheng; Haize Jin; Lili Zhang; Guoxing Sun; Chengying Bai. Urchin-like Co3O4 growth on porous metakaolin-based geopolymer spheres for catalytic degradation of chlortetracycline antibiotics. The European Physical Journal Plus 2025, 140 (8), 10. DOI: 10.1140/epjp/s13360-025-06666-6.