One-pot synthesis of the g-C3N4/S-doped ZnO composite with assistance of sodium lignosulfonate and its enhanced photodegradation on organic pollutants

[Display omitted] •g-C3N4/S-ZnO composite was successfully prepared by a facile one-pot method.•SLS acts as a linkage reagent in the synthetic process.•S originated from SLS was doped into ZnO.•Combining g-C3N4 with ZnO cooperatively improves composite photocatalytic performance.•The g-C3N4/S-ZnO co...

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Bibliographic Details
Published in:Materials research bulletin 2018-11, Vol.107, p.164-170
Main Authors: Chen, Xi-Yu, Pan, Qing-Jiang, Guo, Yuan-Ru
Format: Article
Language:English
Subjects:
CARBON NITRIDES
DOPED MATERIALS
g-C3N4
LIGNIN
MATERIALS SCIENCE
MORPHOLOGY
PHENOL
PHOTOCATALYSIS
Photocatalyst
POLLUTANTS
SODIUM COMPOUNDS
Sodium lignosulfonate
SULFONATES
SYNTHESIS
UREA
WATER TREATMENT
X-RAY PHOTOELECTRON SPECTROSCOPY
ZINC OXIDES
ZnO
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Summary:[Display omitted] •g-C3N4/S-ZnO composite was successfully prepared by a facile one-pot method.•SLS acts as a linkage reagent in the synthetic process.•S originated from SLS was doped into ZnO.•Combining g-C3N4 with ZnO cooperatively improves composite photocatalytic performance.•The g-C3N4/S-ZnO composite shows excellent photocatalytic degradation on phenol. Lignin is one of the most abundant materials in nature, but its highly value-adding utilization is still a challenge. Herein, sodium lignosulfonate (SLS) was adopted to fabricate ZnO centering on the concept of “using lignin valuably”. And the g-C3N4/S-ZnO (CNSZ) composite was successfully prepared. SLS serves as a linkage reagent, interacting with ZnO on one hand and simultaneously helping urea (processor of g-C3N4) to be deposited with ZnO. The structure and morphology of CNSZ were fully characterized. It is shown that g-C3N4 co-exists in the composite. Meanwhile, EDS and XPS analyses indicate the presence of S in the composite, which originates from SLS. The composite is found to show good photocatalytic property. Its degradation efficiency on phenol is 8.5 times higher than bare ZnO. Due to its facile synthesis and excellent property, the newly-synthesized CNSZ is anticipated to be promising for water treatment application.
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2018.07.024