Fig 1

(a) Schematic illustration of the synthesis process of OSCN. (b, c) TEM images of C3N4 and OSCN. (d) HAADF-STEM image of OSCN. (e–h) Element mapping images of N, C, O, and S in the OSCN. The yellow rectangle indicated the porous shape in the plane, and the blue rectangle indicated the thick curly region."

Fig 2

(a, b) Density of states and HOMO-LUMO charge distribution of elements, (c) FTIR spectra for C3N4 and OSCN. High-resolution XPS spectra of (d) S 2p, and (e) O 1s of OSCN."

Fig 3

(a) UV-Vis spectra, (b) band structures, (c) Mott-Schottky plots, (d) PL emission spectra, (e) fitted fluorescence lifetime plots, and (f) SPV spectra (from 300 to 550 nm) of C3N4 and OSCN."

Fig 4

TA spectra of C3N4 (a), and OSCN (b) with delay time from 1 ps to 3 ns, normalized GSB recovery kinetics of C3N4 (c), and OSCN (d) probed at 600 nm. Pseudocolor TA plots of C3N4 (e), and OSCN (f)."

Fig 5

(a, b) Weight loss, (c, d) FTIR spectra, and (e, f) carbonyl indices of PE and PLA under various conditions. The "control" denoted the experimental group that MPs in light condition without materials. Error bars represent standard deviations of the means (n = 3). Data was analyzed by one-way ANOVA followed by Duncanʼs test; groups with different letters indicated significant difference (p < 0.05) among various treatments."

Fig 6

(a) Effects of different scavengers on the photocatalytic degradation of PE and PLA by the OSCN under simulated sunlight. EPR signals of the (b) DMPO–•OH adducts, (c) DMPO–•O2–adducts, and (d) DMPO–1O2 adducts. (e) Schematic mechanisms generation on OSCN for degradation of MPs."

Fig 7

Proposed pathways of photocatalytic (a) PE and (b) PLA degradation by ROS under simulated solar radiation."

Fig 8

Effect of (a) initial pH of system on MPs degradation. (b) Zeta potentials of OSCN samples as a function of pH. Effect of (c) dosage of photocatalyst and (d) HA. Photodegradation of (e) PE and (f) PLA in actual water sample. Error bars represent standard deviations of the means (n = 3)."