Molten salt-templated synthesis of Fe-N5 sites on ramie-derived porous biochar for enhancing singlet oxygen generation and antibiotic degradation - Chenxi Huang; Dong Li; Yutong Zhang; Meifang Li; Xinjiang Hu; Chao Huang; Xiaofei Tan; Jiaqin Deng; Xi Hu; Hui Wang (Bioresource Technology, 2026)