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Effect of zinc acetate concentration on optimization of photocatalytic activity of p-Co3O4/n-ZnO heterostructures

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Abstract
In this work, p-Co3O4/n-ZnO heterostructures were fabricated on Ni substrate by hydrothermal-decomposition method using cobaltous nitrate hexahydrate (Co(NO3)(2)center dot 6H(2)O) and zinc acetate dihydrate (Zn(CH3COO)(2)center dot 2H(2)O) as precursors with zinc acetate concentration varying from 5.0 to 55.0 mM. Structure and morphology of the developed samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM). Effect of zinc acetate concentration on the photocatalytic activity of p-Co3O4/n-ZnO heterostructures was investigated by degradation of methyl orange (MO) under the UV light irradiation. The fabricated p-Co3O4/n-ZnO heterostructures exhibited higher photocatalytic activity than pure Co3O4 particles. In order to obtain the maximum photocatalytic activity, zinc acetate concentration was optimized. Specifically, at 35 mM of zinc acetate, the p-Co3O4/n-ZnO showed the highest photocatalytic activity with the degradation efficiency of MO reaching 89.38% after 72 h irradiation. The improvement of photocatalytic performance of p-Co3O4/n-ZnO heterostructures is due to the increased concentration of photo-generated holes on Co3O4 surface and the higher surface-to-volume ratio in the hierarchical structure formed by nano-lamellas.
Keywords
Co3O4/ZnO, Heterostructures, Photocatalysis, Hydrothermal decomposition, P-N HETEROJUNCTION, VISIBLE-LIGHT IRRADIATION, HYDROTHERMAL SYNTHESIS, METHYL-ORANGE, WASTE-WATER, FACILE SYNTHESIS, CO3O4 NANORODS, DEGRADATION, NANOPARTICLES, PERFORMANCE

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MLA
Xu, Hongyan et al. “Effect of Zinc Acetate Concentration on Optimization of Photocatalytic Activity of p-Co3O4/n-ZnO Heterostructures.” NANOSCALE RESEARCH LETTERS 13 (2018): n. pag. Print.
APA
Xu, Hongyan, Shi, M., Liang, C., Wang, S., Xia, C., Xue, C., Hai, Z., et al. (2018). Effect of zinc acetate concentration on optimization of photocatalytic activity of p-Co3O4/n-ZnO heterostructures. NANOSCALE RESEARCH LETTERS, 13.
Chicago author-date
Xu, Hongyan, Mingliang Shi, Caiqin Liang, Siyan Wang, Chengkai Xia, Chenyang Xue, Zhenyin Hai, and Serge Zhuiykov. 2018. “Effect of Zinc Acetate Concentration on Optimization of Photocatalytic Activity of p-Co3O4/n-ZnO Heterostructures.” Nanoscale Research Letters 13.
Chicago author-date (all authors)
Xu, Hongyan, Mingliang Shi, Caiqin Liang, Siyan Wang, Chengkai Xia, Chenyang Xue, Zhenyin Hai, and Serge Zhuiykov. 2018. “Effect of Zinc Acetate Concentration on Optimization of Photocatalytic Activity of p-Co3O4/n-ZnO Heterostructures.” Nanoscale Research Letters 13.
Vancouver
1.
Xu H, Shi M, Liang C, Wang S, Xia C, Xue C, et al. Effect of zinc acetate concentration on optimization of photocatalytic activity of p-Co3O4/n-ZnO heterostructures. NANOSCALE RESEARCH LETTERS. 2018;13.
IEEE
[1]
H. Xu et al., “Effect of zinc acetate concentration on optimization of photocatalytic activity of p-Co3O4/n-ZnO heterostructures,” NANOSCALE RESEARCH LETTERS, vol. 13, 2018.
@article{8600407,
  abstract     = {In this work, p-Co3O4/n-ZnO heterostructures were fabricated on Ni substrate by hydrothermal-decomposition method using cobaltous nitrate hexahydrate (Co(NO3)(2)center dot 6H(2)O) and zinc acetate dihydrate (Zn(CH3COO)(2)center dot 2H(2)O) as precursors with zinc acetate concentration varying from 5.0 to 55.0 mM. Structure and morphology of the developed samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM). Effect of zinc acetate concentration on the photocatalytic activity of p-Co3O4/n-ZnO heterostructures was investigated by degradation of methyl orange (MO) under the UV light irradiation. The fabricated p-Co3O4/n-ZnO heterostructures exhibited higher photocatalytic activity than pure Co3O4 particles. In order to obtain the maximum photocatalytic activity, zinc acetate concentration was optimized. Specifically, at 35 mM of zinc acetate, the p-Co3O4/n-ZnO showed the highest photocatalytic activity with the degradation efficiency of MO reaching 89.38% after 72 h irradiation. The improvement of photocatalytic performance of p-Co3O4/n-ZnO heterostructures is due to the increased concentration of photo-generated holes on Co3O4 surface and the higher surface-to-volume ratio in the hierarchical structure formed by nano-lamellas.},
  articleno    = {195},
  author       = {Xu, Hongyan and Shi, Mingliang and Liang, Caiqin and Wang, Siyan and Xia, Chengkai and Xue, Chenyang and Hai, Zhenyin and Zhuiykov, Serge},
  issn         = {1556-276X},
  journal      = {NANOSCALE RESEARCH LETTERS},
  keywords     = {Co3O4/ZnO,Heterostructures,Photocatalysis,Hydrothermal decomposition,P-N HETEROJUNCTION,VISIBLE-LIGHT IRRADIATION,HYDROTHERMAL SYNTHESIS,METHYL-ORANGE,WASTE-WATER,FACILE SYNTHESIS,CO3O4 NANORODS,DEGRADATION,NANOPARTICLES,PERFORMANCE},
  language     = {eng},
  pages        = {16},
  title        = {Effect of zinc acetate concentration on optimization of photocatalytic activity of p-Co3O4/n-ZnO heterostructures},
  url          = {http://dx.doi.org/10.1186/s11671-018-2604-4},
  volume       = {13},
  year         = {2018},
}

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