Synthesis of porous g-C{sub 3}N{sub 4}/La and enhanced photocatalytic activity for the degradation of phenol under visible light irradiation

Journal Article · Thu Oct 15 00:00:00 EDT 2015 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2015.07.003· OSTI ID:22486797

Rong, Xinshan ^[1]; Qiu, Fengxian ^[2]; Rong, Jian; Yan, Jie; Zhao, Hao; Zhu, Xiaolu; Yang, Dongya ^[2]

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1. School of Environment and Safety Engineering, Jiangsu University, 212013 Zhenjiang (China)
2. School of Chemistry and Chemical Engineering, Jiangsu University, 212013 Zhenjiang (China)

A series of porous g-C{sub 3}N{sub 4}/La (PGCN/La) materials used as photocatalyst for the degradation of phenol were prepared by two steps. The photocatalysts were characterized by X-ray diffraction (XRD), UV–vis diffuse reflectance spectroscopy (DRS), thermogravimetry (TG), Brunauer–Emmett–Teller (BET), Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). From the TEM morphology, the porous structure of g-C{sub 3}N{sub 4} could be successfully controlled; from BET results, BET specific surface area of porous g-C{sub 3}N{sub 4} (PGCN) sample increases with the increasing of urea mass ratio. Compared with PGCN material (PGCN-50), PGCN/La sample (PGCN-50/La-5) could exhibit an enhanced photocatalytic activity and has the best degradation efficiency of 98.6% within 50 min under visible light irradiation. Photocatalytic reaction follows the first-order model kinetics; and PGCN-50/La-5 photocatalyst shows the largest reaction rate among all samples which is nearly 2.96 times higher than that of pure PGCN-50. The present work illustrates that the photocatalytic activity of porous g-C{sub 3}N{sub 4} was improved by the addition of La and PGCN-50/La-5 has potential application in the removal of phenol or other organic molecular from wastewater. - Graphical abstract: Porous g-C{sub 3}N{sub 4}/La photocatalyst is synthesized and its removal of phenol application has been explored. - Highlights: • Porous PGCN/La photocatalyst was prepared successfully by hydrothermal method. • PGCN/La has a highest degradation efficiency of 98.6% for phenol within 50 min. • The reaction rate of is nearly 2.96 times higher than that of pure PGCN. • As prepared material has potential application in removal of phenol from wastewater.

• OSTI ID: 22486797
• Journal Information: Journal of Solid State Chemistry, Vol. 230; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON NITRIDES
HYDROTHERMAL SYNTHESIS
IRRADIATION
MORPHOLOGY
PHENOL
PHOTOCATALYSIS
POROUS MATERIALS
REACTION KINETICS
SCANNING ELECTRON MICROSCOPY
THERMAL GRAVIMETRIC ANALYSIS
TRANSMISSION ELECTRON MICROSCOPY
UREA
VISIBLE RADIATION
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY