Sulfur-modified Fe/Mo catalysts: Accelerated dual cycling of Mo(VI)/Mo(IV) and Fe(II)/Fe(III) and efficient H2O2 activation - Xiaoqian Peng; Zhixuan Chen; Yilin Shang; Mengfan Liu; Mengjie Fan; Ning Gao; Bei Guan; Yingwen Chen (Journal of Environmental Management, 2026)