Optical behavior and sensor activity of Pb ions incorporated ZnO nanocrystals.
We present the synthesis and characterization of nanocrystalline ZnO doped with Pb in different concentrations. The structural and chemical compositions of the products are characterized by XRD, XPS, EDS and FT-IR spectroscopy. The observed results suggest that Pb ions (Pb(2+) and Pb(4+)) are successfully incorporated into the lattice position of Zn(2+) ions in ZnO. The optical properties of the products are studied by UV-Vis and room temperature PL measurements. The PL emission spectra of ZnO:Pb, show the intensity quenching for both the UV and visible emissions. The influence of Pb on controlling the size and morphology of ZnO is studied by FESEM and confirmed by HRTEM. Amperometric response shows that ZnO incorporated with 0.075M of Pb ions has enhanced sensor activity for H2O2 than the undoped product.
Department of Physics, Annamalai University, Annamalai Nagar, Chidambaram, 608 002 Tamil Nadu, India.
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Kannadasan
Department of Physics, Annamalai University, Annamalai Nagar, Chidambaram, 608 002 Tamil Nadu, India. Electronic address: quantumgosh@rediffmail.com.
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Shanmugam
Department of Physics, Annamalai University, Annamalai Nagar, Chidambaram, 608 002 Tamil Nadu, India.
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Sathishkumar
Department of Physics, Annamalai University, Annamalai Nagar, Chidambaram, 608 002 Tamil Nadu, India.
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Cholan
Department of Physics, Annamalai University, Annamalai Nagar, Chidambaram, 608 002 Tamil Nadu, India.
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Ponnguzhali
Department of Physics, Annamalai University, Annamalai Nagar, Chidambaram, 608 002 Tamil Nadu, India.
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Viruthagiri
D002412:Cations; D003460:Crystallization; D006861:Hydrogen Peroxide / Q000737:chemistry; D007854:Lead / Q000737:chemistry*; D053768:Metal Nanoparticles; D015034:Zinc Oxide / Q000737:chemistry*
D002412:Cations; D007854:Lead; D006861:Hydrogen Peroxide; D015034:Zinc Oxide
Intensity quenching; Morphology; Spectroscopy; Structural