TY - JOUR
T1 - Synthesis of α-Fe
2
O
3
decorated g-C
3
N
4
/ZnO ternary Z-scheme photocatalyst for degradation of tartrazine dye in aqueous media
AU - Balu, Sridharan
AU - Velmurugan, Sethupathi
AU - Palanisamy, Selvakumar
AU - Chen, Shih Wen
AU - Velusamy, Vijayalakshmi
AU - Yang, Thomas C.K.
AU - El-Shafey, El Said I.
N1 - Publisher Copyright:
© 2019 Taiwan Institute of Chemical Engineers
PY - 2019/6
Y1 - 2019/6
N2 - In this study, we report the synthesis of a novel α-Fe2O3 decorated g-C3N4/ZnO (g-C3N4/ZnO@α-Fe2O3) ternary Z-scheme photocatalyst for degradation of organic dye. The g-C3N4/ZnO@α-Fe2O3 ternary nanocomposite was synthesized by using the direct pyrolysis and sol-gel methods. Different physicochemical methods were used to confirm the as-synthesized nanomaterials including Transmission electron microscopy, high-resolution field-emission scanning electron microscopy, Fourier Transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The as-synthesized different nanocomposite materials were used to investigate the photodegradation of tartrazine (Acid Yellow 23). Photoluminescence spectra revealed that the g-C3N4/ZnO@α-Fe2O3 ternary nanocomposite has lower recombination rate than pristine g-C3N4. The as-synthesized nanocomposite showed high photocatalytic activity towards degradation of tartrazine than that of g-C3N4, ZnO, ZnO@α-Fe2O3. Also, g-C3N4/ZnO@α-Fe2O3 nanocomposite can able to degrade 99.34% of tartrazine within 35 min under visible light irradiation. The g-C3N4/ZnO@α-Fe2O3 nanocomposite has a higher rate constant and excellent cyclic stability towards the photodegradation of tartrazine. The electrochemical impedance spectra results confirmed that the g-C3N4/ZnO@α-Fe2O3 nanocomposite has faster electron-transfer ability towards the electrode surface than that of g-C3N4, ZnO, and ZnO@α-Fe2O3 composite.
AB - In this study, we report the synthesis of a novel α-Fe2O3 decorated g-C3N4/ZnO (g-C3N4/ZnO@α-Fe2O3) ternary Z-scheme photocatalyst for degradation of organic dye. The g-C3N4/ZnO@α-Fe2O3 ternary nanocomposite was synthesized by using the direct pyrolysis and sol-gel methods. Different physicochemical methods were used to confirm the as-synthesized nanomaterials including Transmission electron microscopy, high-resolution field-emission scanning electron microscopy, Fourier Transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The as-synthesized different nanocomposite materials were used to investigate the photodegradation of tartrazine (Acid Yellow 23). Photoluminescence spectra revealed that the g-C3N4/ZnO@α-Fe2O3 ternary nanocomposite has lower recombination rate than pristine g-C3N4. The as-synthesized nanocomposite showed high photocatalytic activity towards degradation of tartrazine than that of g-C3N4, ZnO, ZnO@α-Fe2O3. Also, g-C3N4/ZnO@α-Fe2O3 nanocomposite can able to degrade 99.34% of tartrazine within 35 min under visible light irradiation. The g-C3N4/ZnO@α-Fe2O3 nanocomposite has a higher rate constant and excellent cyclic stability towards the photodegradation of tartrazine. The electrochemical impedance spectra results confirmed that the g-C3N4/ZnO@α-Fe2O3 nanocomposite has faster electron-transfer ability towards the electrode surface than that of g-C3N4, ZnO, and ZnO@α-Fe2O3 composite.
KW - Photocatalytic degradation
KW - Photoelectrochemical activity
KW - Ternary nanocomposite
KW - Z-scheme photocatalyst, Tartrazine
KW - g-CN,/ZnO@α-FeO nanocomposite
UR - http://www.scopus.com/inward/record.url?scp=85063761058&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063761058&partnerID=8YFLogxK
U2 - 10.1016/j.jtice.2019.03.011
DO - 10.1016/j.jtice.2019.03.011
M3 - Article
AN - SCOPUS:85063761058
SN - 1876-1070
VL - 99
SP - 258
EP - 267
JO - Journal of the Taiwan Institute of Chemical Engineers
JF - Journal of the Taiwan Institute of Chemical Engineers
ER -