Structure and photocatalytic activity of Ni-doped ZnO nanorods

Journal Article · Mon Aug 15 04:00:00 EDT 2011 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2011.04.008· OSTI ID:22212214

Zhao, Jing ^[1]; Wang, Li ^[2]; Yan, Xiaoqin; Yang, Ya; Lei, Yang; Zhou, Jing; Huang, Yunhua; Gu, Yousong ^[1]; Zhang, Yue ^[1]

---

1. State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China)
2. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083 (China)

Graphical abstract: Degradation rates of rhodamine B by Zn{sub 1-x}Ni{sub x}O photocatalyst. Highlights: {yields} The Ni-doped ZnO nanorods show a new band at {approx}130 cm{sup -1} in Raman spectra at room temperature. We conclude this mode is caused by an ordered arrangement of Ni dopants in the ZnO lattice. {yields} When the Ni-doping concentration raises, the band gap first increases and then decreases. {yields} The ZnO nanorods with different Ni-doping concentraton all exhibited higher photocatalytic activity than un-doped ZnO. The order of photocatalytic activities is Zn{sub 0.95}Ni{sub 0.05}O > Zn{sub 0.9}Ni{sub 0.1}O > Zn{sub 0.98}Ni{sub 0.02}O > ZnO. -- Abstract: The one-dimensional (1D) Zn{sub 1-x}Ni{sub x}O (x = 0, 0.02, 0.05, 0.10) nanorods have been synthesized by a simple hydrothermal method. New bands show at {approx}130 cm{sup -1} in the Raman spectra of Ni-doped ZnO nanorods and their relative intensity depends on the doping concentration of nickel. The optical band gap of the ZnO nanorods have been tuned by Ni-doping, which is revealed by absorption spectra. The photocatalytic activity of Zn{sub 1-x}Ni{sub x}O was studied by comparing the degradation rate of rhodamine B (RB) under UV-light irradiation. It was found that Zn{sub 0.95}Ni{sub 0.05}O exhibited the highest photocatalytic degradation efficiency among the samples.

• OSTI ID: 22212214
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 8 Vol. 46; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION SPECTRA
DOPED MATERIALS
EFFICIENCY
IRRADIATION
NANOSTRUCTURES
OPTICAL PROPERTIES
PHOTOCATALYSIS
RAMAN SPECTRA
RAMAN SPECTROSCOPY
ZINC OXIDES