Scheme 1

Synthesis of TpAQ/ZIS heterojunction."

Fig 1

Hirshfeld charge distribution in TpAQ, with C, H, O, and N atoms colored gray, white, red, and blue, respectively."

Fig 2

PXRD patterns (a) and FTIR (b) of ZIS, TpAQ and TpAQ/ZIS-X composites."

Fig 3

SEM image of TpAQ (a); ZIS (b); TpAQ/ZIS-10 (c). HRTEM (d, e), HAADF-STEM (f) and EDS elemental mapping images (g–l) of TpAQ/ZIS-10."

Fig 4

XPS survey spectrum of the synthesized photocatalysts (a); and corresponding high-resolution XPS spectra of S 2p (b), Zn 2p (c), In 3d (d), C 1s (e) and N 1s (f) regions."

Fig 5

(a) UV-Vis DRS spectra of the photocatalysts; Tauc plots of TpAQ (b) and ZIS (c); Mott-Schottky plots for TpAQ (d) and ZIS (e), and the Band structures (f)."

Fig 6

(a) transient photocurrent response curves; (b) EIS Nyquist plots; (c) PL spectra; (d) Time-resolved PL spectra of TpAQ, ZIS and TpAQ/ZIS-10."

Fig 7

(a) Time-dependent H2O2 production curves; (b) The H2O2 production rate of different samples; (c) AQE for TpAQ/ZIS-10 at different wavelengths; (d) Recycling tests for TpAQ/ZIS-10."

Fig 8

Photocatalytic performance of TpAQ/ZIS-10 under different conditions (a); different scavengers (b); The LSV curves measured by RDE with different rotating of TpAQ/ZIS-10 (c); The Koutecky-Levich plots obtained via RDE measurements (d); Mass charts for O2 evolved by WOR (e) and decomposition of H218O2 produced by isotopic experiments (f)."

Fig 9

Electrostatic potential of (a) TpAQ and (b) ZIS."

Fig 10

Band diagrams of TpAQ and ZIS (a) before contact; (b) after contact and (c) Schematic diagram of S-scheme charge transfer mechanism of TpAQ/ZIS-10."

Fig 11

(a) Side view of the optimized TpAQ (001)/ZIS (001). (b) Planar-averaged electron density difference Δρ(Z) and (c) calculated 3D charge density difference distribution of TpAQ (001)/ZIS (001) (charge accumulation is shown as the yellow region, and the charge depletion is shown as the cyan region)."