Journal
APPLIED CATALYSIS A-GENERAL
Volume 573, Issue -, Pages 13-21Publisher
ELSEVIER
DOI: 10.1016/j.apcata.2019.01.010
Keywords
g-C3N4; Gaseous bubbles; Porous; Ammonium lauryl sulphate; Photocatalytic activity
Categories
Funding
- National Natural Science Foundation of China [51608329]
- Natural Science Foundation of Guangdong [2017A030313315]
- Shenzhen Science and Technology Project [JCYJ20160520165135743, JCYJ20170412171918012, ZDSYS201606061530079]
- National Major Science and Technology Program for Water Pollution Control and Treatment [2017ZX07202]
- Natural Science Foundation of Shenzhen University [827-000223, 2016008]
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Metal-free graphitic carbon nitride (g-C3N4) displays benign photocatalytic properties for contaminants photo degradation under visible photoirradiation. Devising a simple modification strategy for the improved photo catalytic activity of g-C3N4 has always been desired. Herein, we report a spherical worm-like g-C3N4 nanostructure via facile ammonium lauryl sulfate (ALS) gaseous bubbles templating approach. This strategy employing ALS as gaseous bubbles templating agent bestowed not only g-C3N4 with improved specific surface areas, a porous structure with more exposed photocatalytic reactive sites and mass diffusion of reactants molecules, but also rendered extended optical absorption range and suppression of the photoinduced charge carriers recombination. As a result, the ALS-mediated g-C3N4 photocatalysts unfolded excellent photocatalytic performance regarding photodegradation of rhodamine B (RhB) and phenol under visible photoirradiation. Additionally, the quenching effects of various scavengers proved that the holes (h+) and superoxide anions (-02+) radicals were the main active species responsible for ameliorated photocatalytic performance for rhodamine B and phenol photodegradation. Our work offers a straightforward approach for developing high-performance metal free photocatalysts with great potential for environmental remediation.
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