Mn-substituted fe oxides solid solutions as a hidden master phase regulating bidirectional chromium(III/VI) redox transformations - Ruichun Meng; Rouyun Zhou; Loua-Augustin Bonaventure; Aoxue Yin; Junyuan Li; Fuliang Wang; Xiaoli Qian; Ming Ao; Jean-Louis Morel; Pan Wu; Shizhong Wang (Journal of Environmental Chemical Engineering, 2026)