Fabrication and Photocatalytic Property of Three-dimensional ZnO Hierarchical Structure

doi:10.3969/j.issn.0251-0790.2012.05.030

Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (05): 1031.doi: 10.3969/j.issn.0251-0790.2012.05.030

• Physical Chemistry • Previous Articles Next Articles

Fabrication and Photocatalytic Property of Three-dimensional ZnO Hierarchical Structure

PAN Chao^1,3, DONG Li², QIU Jie-Shan³

1. College of Science, Dalian Ocean University, Dalian 116023, China;
2. College of Science, Dalian Nationalities University, Dalian 116600, China;
3. Carbon Research Laboratory and State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China

Received:2011-06-24 Online:2012-05-10 Published:2012-05-10

Abstract

Abstract: Three-dimensional ZnO hierarchical structures with high densities of secondary ZnO nanowires grown on primary ZnO fibers were fabricated through a co-precipitation reaction growth on the electrospinning PVA/zinc acetate nanofibers template followed by an annealing process in air. The structural analyses showed that as-prepared amorphous ZnC₂O₄ nanowires converted into wurtzite ZnO after annealing. The morphology of the ZnO hierarchical structures could be further controlled by adjusting the molar ratio of H₂C₂O₄ to EtOH. The hierarchical structured ZnO sample shows an enhanced photocatalytic performance compared with the other nanostructured ZnO powders of nanoparticles, and nanofibers, which can be attributed to the special structural feature with an open and secondary ZnO nanowire that significantly facilitates the diffusion and mass transportation of acetaldehyde molecules and oxygen species in photochemical reaction of acetaldehyde degradation.

Key words: ZnO, Hierarchical structure, Electrospinning, Co-precipitation

CLC Number:

O643

TrendMD:

PAN Chao, DONG Li, QIU Jie-Shan. Fabrication and Photocatalytic Property of Three-dimensional ZnO Hierarchical Structure[J]. Chem. J. Chinese Universities, 2012, 33(05): 1031.

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Fabrication and Photocatalytic Property of Three-dimensional ZnO Hierarchical Structure

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