Figure k. N2 physisorption isotherms (left) and SAXS scattering plots (right) of (●) FePO4 SBA-15 (75), (●) FePO4 SBA-15 (22), (●) FePO4 SBA-15 (12), (●) FePO4 SBA-15 (7), and (●) SBA-15. Figure k. N2 physisorption isotherms (left) and SAXS scattering plots (right) of (●) FePO4 SBA-15 (75), (●) FePO4 SBA-15 (22), (●) FePO4 SBA-15 (12), (●) FePO4 SBA-15 (7), and (●) SBA-15.