Effect of Synthesis Conditions on CuO-NiO Nanocomposites Synthesized via Saponin-Green/Microwave Assisted-Hydrothermal Method

被引:8
作者
Al-Yunus, Amnah [1 ]
Al-Arjan, Wafa [1 ]
Traboulsi, Hassan [1 ,2 ]
Schuarca, Robson [3 ]
Chando, Paul [3 ]
Hosein, Ian D. [3 ]
Hessien, Manal [1 ]
机构
[1] King Faisal Univ, Coll Sci, Dept Chem, POB 400, Alahsa 31982, Saudi Arabia
[2] Champlain Coll, Dept Chem, 900 Riverside Dr, St Lambert, PQ J4P 3P2, Canada
[3] Syracuse Univ, Coll Engn & Comp Sci, Dept Biomed & Chem Engn, 339 Link Hall, Syracuse, NY 13244 USA
关键词
CuO-NiO nanocomposites; saponin; green hydrothermal-assisted microwave; microstructure; SOL-GEL SYNTHESIS; SAPINDUS-MUKOROSSI; NATURAL SURFACTANT; NIO/CUO NANOCOMPOSITES; NANOPARTICLES; ZNO; PHOTODEGRADATION; HETEROSTRUCTURES; NANOSTRUCTURES; EXTRACTION;
D O I
10.3390/nano14030308
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This work presents the synthesis of CuO-NiO nanocomposites under different synthesis conditions. Nanocomposites were synthesized by merging a green synthesis process with a microwave-assisted hydrothermal method. The synthesis conditions were as follows: concentration of the metal precursors (0.05, 0.1, and 0.2 M), pH (9, 10, and 11), synthesis temperature (150 degrees C, 200 degrees C, and 250 degrees C), microwave treatment time (15, 30, and 45 min), and extract concentration (20 and 40 mL of 1 g saponin/10 mL water, and 30 mL of 2 g saponin/10 mL water). The phases and crystallite sizes of the calcined nanocomposites were characterized using XRD and band gap via UV-Vis spectroscopy, and their morphologies were investigated using SEM and TEM. The XRD results confirmed the formation of a face-centered cubic phase for nickel oxide, while copper oxide has a monoclinic phase. The calculated crystallite size was in the range of 29-39 nm. The direct band gaps of the samples prepared in this work were in the range of 2.39-3.17 eV.
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页数:19
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