Open Access Nano Express

(Zn,H)-codoped copper oxide nanoparticles via pulsed laser ablation on Cu-Zn alloy in water

Bo-Cheng Lin1, Shuei-Yuan Chen2 and Pouyan Shen1*

Author affiliations

1 Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan

2 Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung, 84001, Taiwan

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Citation and License

Nanoscale Research Letters 2012, 7:272  doi:10.1186/1556-276X-7-272

Published: 30 May 2012

Abstract

Nanosized (5 to 10 nm) amorphous and crystalline nanocondensates, i.e., metallic α-phase of Zn-Cu alloy in face-centered cubic structure and (Zn,H)-codoped cuprite (Cu2O) with high-pressure-favored close-packed sublattice, were formed by pulsed laser ablation on bulk Cu65Zn35 in water and characterized by X-ray/electron diffractions and optical spectroscopy. The as-fabricated hybrid nanocondensates are darkish and showed photoluminescence in the whole visible region. Further dwelling of such nanocondensates in water caused progressive formation of a rice-like assembly of (Zn,H)-codoped tenorite (CuO) nanoparticles with (001), (100), and {111} preferred orientations, (111) tilt boundary, yellowish color, and minimum bandgap narrowing down to ca. 2.7 eV for potential photocatalytic applications.

Keywords:
copper oxide; nanocondensate; (Zn,H) codopant; PLA, water