Fig. 4: Water purification capacity and catalytic mechanism of wood-inspired metamaterial catalyst.
From: Wood-inspired metamaterial catalyst for robust and high-throughput water purification
a The degradation results of SMX by different metamaterial catalysts. b Normalized degradation kinetics constant of wood-inspired metamaterial catalysts with different overlap rates. The error bars present the upper and lower limits of the normalized kinetic constant for multiple experimental testing. c The organic mineralization rate in the 70% overlap metamaterial catalyst water purification system by measuring the total organic carbon (TOC). d The ratio of different active substances obtained by free radical quenching experiment. e EPR signal of the active substances captured by DMPO and TEMP. f current-time curves of the different reaction systems. XPS characterization of g Co and h Fe in wood-inspired metamaterial catalysts before and after water treatment. i Proposed mechanism of PMS activation by wood-inspired metamaterial catalysts and the strong synergy between Co and Fe. j Schematic diagram of long-time water treatment device. k Long-term performance of Co/SS metamaterial catalyst for SMX degradation. Figure 4a–h, k are provided as a Source Data file.
