TY - JOUR
T1 - Cu2O-CuO@biochar composite
T2 - Synthesis, characterization and its efficient photocatalytic performance
AU - Khataee, Alireza
AU - Kalderis, Dimitrios
AU - Gholami, Peyman
AU - Fazli, Arezoo
AU - Moschogiannaki, Marilena
AU - Binas, Vasileios
AU - Lykaki, Maria
AU - Konsolakis, Michalis
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/12/31
Y1 - 2019/12/31
N2 - This research focuses on the facile hydrothermal preparation of Cu2O-CuO@biochar (Cu2O-CuO@BC) composites of different BC content (0.5, 1.0, and 2.0 g/L) as efficient photocatalysts for the decomposition and mineralization of Reactive Orange 29 (RO29). The textural and morphological properties of biochar-based composites were studied utilizing BET, TEM, and SEM analyses. Moreover, EDX, XRD, UV–Vis, DRS and FTIR characterization was carried out to evaluate the elemental composition, crystalline structure, optical characteristics and functional groups of the samples, respectively. The [email protected] composite with a BC content of 1.0 g/L exhibited superior photocatalytic performance than the individual counterparts BC and Cu2O-CuO, due to its narrow band gap and high surface area. These characteristics led to the synergetic ability of UV irradiation and photocatalytic performance of Cu2O-CuO@BC to generate oxidizing species and subsequent radical reactions. The generation of some by-products was verified using GC–MS analysis and accordingly, a possible pathway was proposed. 94.12% degradation efficiency of RO29 was obtained by [email protected] composite at the natural pH of RO29 solution (8.9) and initial RO29 concentration of 20 mg/L after 90 min of photocatalysis. Under identical conditions, 47.31% and 79.62% COD removal efficiencies were observed after 90 and 180 min treatment, respectively.
AB - This research focuses on the facile hydrothermal preparation of Cu2O-CuO@biochar (Cu2O-CuO@BC) composites of different BC content (0.5, 1.0, and 2.0 g/L) as efficient photocatalysts for the decomposition and mineralization of Reactive Orange 29 (RO29). The textural and morphological properties of biochar-based composites were studied utilizing BET, TEM, and SEM analyses. Moreover, EDX, XRD, UV–Vis, DRS and FTIR characterization was carried out to evaluate the elemental composition, crystalline structure, optical characteristics and functional groups of the samples, respectively. The [email protected] composite with a BC content of 1.0 g/L exhibited superior photocatalytic performance than the individual counterparts BC and Cu2O-CuO, due to its narrow band gap and high surface area. These characteristics led to the synergetic ability of UV irradiation and photocatalytic performance of Cu2O-CuO@BC to generate oxidizing species and subsequent radical reactions. The generation of some by-products was verified using GC–MS analysis and accordingly, a possible pathway was proposed. 94.12% degradation efficiency of RO29 was obtained by [email protected] composite at the natural pH of RO29 solution (8.9) and initial RO29 concentration of 20 mg/L after 90 min of photocatalysis. Under identical conditions, 47.31% and 79.62% COD removal efficiencies were observed after 90 and 180 min treatment, respectively.
KW - Advanced water treatment
KW - Biochar
KW - Copper oxide composite
KW - Hydrothermal synthesis
KW - Photocatalyst
UR - http://www.scopus.com/inward/record.url?scp=85071653345&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2019.143846
DO - 10.1016/j.apsusc.2019.143846
M3 - Article
AN - SCOPUS:85071653345
SN - 0169-4332
VL - 498
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 143846
ER -