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Facile one-step synthesis and characterization of MnO nanoneedles and their application in solar photocatalysis
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作者:

Picos-Benitez, Alain R.
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Inst Politecn Nacl, Ctr Estudios Cientif & Tecnol 18, Zacatecas 98160, Zac, Mexico Inst Politecn Nacl, Ctr Estudios Cientif & Tecnol 18, Zacatecas 98160, Zac, Mexico

Medina-Leanos, Raudel
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Inst Politecn Nacl, Unidad Profes Interdisciplinaria Ingn, Campus Zacatecas, Zacatecas 98160, Zac, Mexico Inst Politecn Nacl, Ctr Estudios Cientif & Tecnol 18, Zacatecas 98160, Zac, Mexico

Rodriguez-Lopez, J. L.
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Inst Potosino Invest Cient & Tecnol, Adv Mat Dept, Camino Presa San Jose 2055, San Luis Potosi 78216, Mexico Inst Politecn Nacl, Ctr Estudios Cientif & Tecnol 18, Zacatecas 98160, Zac, Mexico

Ortiz-Frade, Luis A.
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Ctr Invest & Desarrollo Tecnol Electroquim, Electrochem Dept, Parque Tecnol Queretaro Sanfandila SN, Pedro Escobedo 760703, Queretaro, Mexico Inst Politecn Nacl, Ctr Estudios Cientif & Tecnol 18, Zacatecas 98160, Zac, Mexico

Martinez-Vargas, Blanca L.
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Inst Politecn Nacl, Ctr Estudios Cientif & Tecnol 18, Zacatecas 98160, Zac, Mexico Inst Politecn Nacl, Ctr Estudios Cientif & Tecnol 18, Zacatecas 98160, Zac, Mexico
机构:
[1] Inst Politecn Nacl, Ctr Estudios Cientif & Tecnol 18, Zacatecas 98160, Zac, Mexico
[2] Inst Politecn Nacl, Unidad Profes Interdisciplinaria Ingn, Campus Zacatecas, Zacatecas 98160, Zac, Mexico
[3] Inst Potosino Invest Cient & Tecnol, Adv Mat Dept, Camino Presa San Jose 2055, San Luis Potosi 78216, Mexico
[4] Ctr Invest & Desarrollo Tecnol Electroquim, Electrochem Dept, Parque Tecnol Queretaro Sanfandila SN, Pedro Escobedo 760703, Queretaro, Mexico
关键词:
MnO nanoneedles;
Optical properties;
Facile synthesis;
Solar photocatalyst;
OXIDE NANOPARTICLES;
GROWTH;
DEGRADATION;
ZNO;
D O I:
10.1016/j.optmat.2024.115873
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Manganese oxide (MnO) colloidal nanoneedles have been successfully synthesized by a facile one-step method based on the alkaline reaction of the precursor manganese acetate salt and excess sodium hydroxide. X-ray diffraction and FT-IR spectroscopy confirmed the synthesized MnO nanoneedles phase and structure. The optical properties of synthesized MnO nanoneedles were studied by UV-Vis absorption spectroscopy. Optical particle size and band gap of synthesized MnO colloidal nanoneedles were calculated. HR-TEM/SEM images and EDX allow us to determined particle shape and size. The photocatalytic activity of the MnO nanoneedles was evaluated using the Congo red azo dye in an aqueous solution under solar light irradiation. The results showed that nanoneedles, compared with commercial ZnO nanoparticles, exhibited high photocatalytic activity. The photocatalytic studies also showed that various parameters such as band gap, size, shape, and rate constant velocity remarkably affected the remotion rate of Congo red azo dye.
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