Gaseous bubble-assisted in-situ construction of worm-like porous g-C3N4 with superior visible light photocatalytic performance

Abstract Metal-free graphitic carbon nitride(g-C 3 N 4 ) displays benign photocatalytic properties for contaminants photodegradationunder visible photoirradiation. Devising a simple modification strategy for the improved photocatalytic activity of g-C 3 N 4 has always been desired. Herein, we report a spherical worm-like g-C 3 N 4 nanostructure via facile ammonium lauryl sulfate(ALS) gaseous bubbles templating approach. This strategy employing ALS as gaseous bubbles templating agent bestowed not only g-C 3 N 4 with improved specific surface areas, a porous structure with more exposed photocatalytic reactive sites and mass diffusionof reactants molecules, but also rendered extended optical absorption range and suppression of the photoinduced charge carriers recombination. As a result, the ALS-mediated g-C 3 N 4 photocatalysts unfolded excellent photocatalytic performance regarding photodegradationof rhodamine B(RhB) and phenol under visible photoirradiation. Additionally, the quenching effects of various scavengers proved that the holes (h + ) and superoxide anions ( O 2 − ) radicals were the main active species responsible for ameliorated photocatalytic performance for rhodamine Band phenol photodegradation. Our work offers a straightforward approach for developing high-performance metal free photocatalysts with great potential for environmental remediation.