Enhanced Photocatalytic Activity of Ag Doped ZnO Nanorods for Degradation of an Azo Dye

Ce-doped ZnO (ZnO:Ce) nanorods have been prepared through a solvothermal method and the effects of Ce-doping on the structural, optical and electronic properties of ZnO rods were studied. ZnO:Ce rods were characterized by XRD, SEM, TEM, XPS, BET, DRS and Raman spectroscopy. 5% Ce-doped ZnO rods with an average length of 130 nm and a diameter of 23 nm exhibit the highest photocatalytic activity for the degradation of the Orange II dye under solar light irradiation. The high photocatalytic activity is ascribed to the substantially enhanced light absorption in the visible region, to the high surface area of ZnO:Ce rods and to the effective electron–hole pair separation originating from Ce doping. The influence of various experimental parameters like the pH, the presence of salts and of organic compounds was investigated and no marked detrimental effect on the photocatalytic activity was observed. Finally, recyclability experiments demonstrate that ZnO:Ce rods are a stable solar-light photocatalyst.

Download Full-text

Structure and photocatalytic activity of Ni-doped ZnO nanorods

Materials Research Bulletin ◽

10.1016/j.materresbull.2011.04.008 ◽

2011 ◽

Vol 46 (8) ◽

pp. 1207-1210 ◽

Cited By ~ 105

Author(s):

Jing Zhao ◽

Li Wang ◽

Xiaoqin Yan ◽

Ya Yang ◽

Yang Lei ◽

...

Keyword(s):

Photocatalytic Activity ◽

Zno Nanorods ◽

Doped Zno

Download Full-text

Enhanced photocatalytic activity of Al and Fe co-doped ZnO nanorods for methylene blue degradation

Ceramics International ◽

10.1016/j.ceramint.2019.07.132 ◽

2019 ◽

Vol 45 (17) ◽

pp. 21430-21435 ◽

Cited By ~ 26

Author(s):

N.R. Khalid ◽

A. Hammad ◽

M.B. Tahir ◽

M. Rafique ◽

T. Iqbal ◽

...

Keyword(s):

Methylene Blue ◽

Photocatalytic Activity ◽

Zno Nanorods ◽

Methylene Blue Degradation ◽

Doped Zno ◽

Co Doped

Download Full-text

Synthesis, characterization and photocatalytic activity of novel Hg doped ZnO nanorods prepared by thermal decomposition method

Journal of Molecular Liquids ◽

10.1016/j.molliq.2012.11.012 ◽

2013 ◽

Vol 178 ◽

pp. 88-93 ◽

Cited By ~ 236

Author(s):

R. Saravanan ◽

V.K. Gupta ◽

T. Prakash ◽

V. Narayanan ◽

A. Stephen

Keyword(s):

Thermal Decomposition ◽

Photocatalytic Activity ◽

Decomposition Method ◽

Zno Nanorods ◽

Thermal Decomposition Method ◽

Doped Zno

Download Full-text

Photocatalytic activity of Eu3+-doped ZnO nanorods synthesized via microwave assisted technique

Journal of Rare Earths ◽

10.1016/s1002-0721(14)60072-7 ◽

2014 ◽

Vol 32 (4) ◽

pp. 306-313 ◽

Cited By ~ 75

Author(s):

P.V. Korake ◽

A.N. Kadam ◽

K.M. Garadkar

Keyword(s):

Photocatalytic Activity ◽

Zno Nanorods ◽

Microwave Assisted ◽

Doped Zno

Download Full-text

RUTHENIUM DOPED ZnO SEMICONDUCTOR: SYNTHESIS, CHARACTERIZATION AND PHOTODEGRADATION OF AZO DYE

International Journal of Nanoscience ◽

10.1142/s0219581x13500099 ◽

2013 ◽

Vol 12 (02) ◽

pp. 1350009 ◽

Cited By ~ 4

Author(s):

K. R. ARANGANAYAGAM ◽

S. SENTHILKUMAAR ◽

N. GANAPATHI SUBRAMANIAM ◽

T. WANG KANG

Keyword(s):

Photocatalytic Activity ◽

High Resolution ◽

Azo Dye ◽

Heterogeneous Reaction ◽

Sol Gel ◽

X Ray Diffraction ◽

Transmission Electron ◽

Elementary Chemical Reaction ◽

Doped Zno ◽

Cr Concentration

Ruthenium doped zinc oxide was synthesized by a simple sol–gel method via ultrasonication. The samples were characterized by X-ray diffraction, high resolution scanning electron microscopy (HR-SEM), high resolution transmission electron microscope (HR-TEM), energy dispersive spectroscopy (EDS) and UV-visible spectroscopy techniques and tested for the feasibility as a heterogeneous photocatalyst. The photocatalytic activity of Ru doped ZnO was tested using an azo dye, congo red (CR) in an aqueous solution, as a model compound. For comparison, the photocatalytic activity of pure ZnO was also performed. The parameters studied include the effect of initial CR concentration, photocatalyst weight and charge transfer phenomenon. The observed reaction mechanism was rationalized based on the elementary chemical reaction occurring in the irradiated heterogeneous reaction mixture. Total mineralization of CR was observed for both pure and Ru doped ZnO system. However, the photocatalytic activity of Ru doped ZnO was found to be higher than that of a pure ZnO .

Download Full-text