Photocatalytic splitting of seawater effected by (Ni-ZnO)@C nanoreactors

T. C. Yang; F. C. Chang; H. Paul Wang; Y. L. Wei; C. J. Jou

doi:10.1016/j.marpolbul.2014.02.011

Photocatalytic splitting of seawater effected by (Ni-ZnO)@C nanoreactors

T. C. Yang, F. C. Chang, H. Paul Wang, Y. L. Wei, C. J. Jou

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Novel photocatalysts i.e., metallic nickel and zinc oxide nanoparticles embedded in the carbon-shell ((Ni-ZnO)@C) have been used for photocatalytic splitting of seawater to generate H₂. The (Ni-ZnO)@C core-shell nanoparticles having the Zn/Ni ratios of 0-3 were prepared by carbonization of Ni²⁺- and Zn²⁺-β-cyclodextrin at 673K for 2h. To increase the collision frequency of water and photoactive sites within the carbon-shell, Ni and ZnO are partially etched from the (Ni-ZnO)@C core-shell to form yolk-shell nanoparticles with a H₂SO₄ solution (2N). By X-ray diffraction spectroscopy, mainly Ni and ZnO crystallites are observed in the core- and yolk-shell nanoparticles. The sizes of the Ni and ZnO in the (Ni-ZnO)>C nanoreactors are between 7 and 23nm in diameters determined by TEM and small angel scattering spectroscopy. Under a 5-h UV-Vis light irradiation, 5.01μmol/hg_cat of H₂ are yielded from photocatalytic splitting of seawater effected by (Ni-ZnO)@C nanoreactors.

Original language	English
Pages (from-to)	696-699
Number of pages	4
Journal	Marine Pollution Bulletin
Volume	85
Issue number	2
DOIs	https://doi.org/10.1016/j.marpolbul.2014.02.011
Publication status	Published - 2014 Aug 30

All Science Journal Classification (ASJC) codes

Oceanography
Aquatic Science
Pollution

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10.1016/j.marpolbul.2014.02.011

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title = "Photocatalytic splitting of seawater effected by (Ni-ZnO)@C nanoreactors",

abstract = "Novel photocatalysts i.e., metallic nickel and zinc oxide nanoparticles embedded in the carbon-shell ((Ni-ZnO)@C) have been used for photocatalytic splitting of seawater to generate H2. The (Ni-ZnO)@C core-shell nanoparticles having the Zn/Ni ratios of 0-3 were prepared by carbonization of Ni2+- and Zn2+-β-cyclodextrin at 673K for 2h. To increase the collision frequency of water and photoactive sites within the carbon-shell, Ni and ZnO are partially etched from the (Ni-ZnO)@C core-shell to form yolk-shell nanoparticles with a H2SO4 solution (2N). By X-ray diffraction spectroscopy, mainly Ni and ZnO crystallites are observed in the core- and yolk-shell nanoparticles. The sizes of the Ni and ZnO in the (Ni-ZnO)>C nanoreactors are between 7 and 23nm in diameters determined by TEM and small angel scattering spectroscopy. Under a 5-h UV-Vis light irradiation, 5.01μmol/hgcat of H2 are yielded from photocatalytic splitting of seawater effected by (Ni-ZnO)@C nanoreactors.",

author = "Yang, {T. C.} and Chang, {F. C.} and Wang, {H. Paul} and Wei, {Y. L.} and Jou, {C. J.}",

note = "Funding Information: The financial supports of the Taiwan National Science Council , Bureau of Energy, and National Synchrotron Radiation Center are gratefully acknowledged.",

year = "2014",

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doi = "10.1016/j.marpolbul.2014.02.011",

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T1 - Photocatalytic splitting of seawater effected by (Ni-ZnO)@C nanoreactors

AU - Yang, T. C.

AU - Chang, F. C.

AU - Wang, H. Paul

AU - Wei, Y. L.

AU - Jou, C. J.

N1 - Funding Information: The financial supports of the Taiwan National Science Council , Bureau of Energy, and National Synchrotron Radiation Center are gratefully acknowledged.

PY - 2014/8/30

Y1 - 2014/8/30

N2 - Novel photocatalysts i.e., metallic nickel and zinc oxide nanoparticles embedded in the carbon-shell ((Ni-ZnO)@C) have been used for photocatalytic splitting of seawater to generate H2. The (Ni-ZnO)@C core-shell nanoparticles having the Zn/Ni ratios of 0-3 were prepared by carbonization of Ni2+- and Zn2+-β-cyclodextrin at 673K for 2h. To increase the collision frequency of water and photoactive sites within the carbon-shell, Ni and ZnO are partially etched from the (Ni-ZnO)@C core-shell to form yolk-shell nanoparticles with a H2SO4 solution (2N). By X-ray diffraction spectroscopy, mainly Ni and ZnO crystallites are observed in the core- and yolk-shell nanoparticles. The sizes of the Ni and ZnO in the (Ni-ZnO)>C nanoreactors are between 7 and 23nm in diameters determined by TEM and small angel scattering spectroscopy. Under a 5-h UV-Vis light irradiation, 5.01μmol/hgcat of H2 are yielded from photocatalytic splitting of seawater effected by (Ni-ZnO)@C nanoreactors.

AB - Novel photocatalysts i.e., metallic nickel and zinc oxide nanoparticles embedded in the carbon-shell ((Ni-ZnO)@C) have been used for photocatalytic splitting of seawater to generate H2. The (Ni-ZnO)@C core-shell nanoparticles having the Zn/Ni ratios of 0-3 were prepared by carbonization of Ni2+- and Zn2+-β-cyclodextrin at 673K for 2h. To increase the collision frequency of water and photoactive sites within the carbon-shell, Ni and ZnO are partially etched from the (Ni-ZnO)@C core-shell to form yolk-shell nanoparticles with a H2SO4 solution (2N). By X-ray diffraction spectroscopy, mainly Ni and ZnO crystallites are observed in the core- and yolk-shell nanoparticles. The sizes of the Ni and ZnO in the (Ni-ZnO)>C nanoreactors are between 7 and 23nm in diameters determined by TEM and small angel scattering spectroscopy. Under a 5-h UV-Vis light irradiation, 5.01μmol/hgcat of H2 are yielded from photocatalytic splitting of seawater effected by (Ni-ZnO)@C nanoreactors.

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Photocatalytic splitting of seawater effected by (Ni-ZnO)@C nanoreactors

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