Journal
NANOSCALE RESEARCH LETTERS
Volume 14, Issue -, Pages -Publisher
SPRINGEROPEN
DOI: 10.1186/s11671-019-3034-7
Keywords
ZnO nanorod; Cu2O nanoparticle; Ag nanoparticle; Photocatalytic paper; Photocatalysis
Funding
- Ministry of Science and Technology, Taiwan [106-2221-E-007-004, 107-2221-E-007-084]
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We report on the fabrication of flexible photocatalytic paper comprised of Cu2O and Ag nanoparticle (NP)-decorated ZnO nanorods (NRs) and its application in visible light photodegradation of organic dye. ZnO NRs are first grown on a kraft paper substrate using a hydrothermal method. The NRs are subsequently decorated with Cu2O, Ag, or both NPs formed by photoreduction processes. Scanning electron microscopy and X-ray diffraction analysis confirm the crystallinity of ZnO NRs. Transmission electron microscopy analysis confirms the compositions of the two types of NPs. Four different types of photocatalytic papers with a size of 10 x 10cm(2) are prepared and used to degrade a 10-M and 100-mL rhodamine B solution. The paper with Cu2O and Ag NP-co-decorated ZnO NRs has the best efficiency with first-order kinetic constants of 0.017 and 0.041min(-1) under the illumination of a halogen lamp and direct sunlight, respectively. The performance of the photocatalytic paper compares well with other substrate-supported ZnO nanocomposite photocatalysts. With the advantages of flexibility, light weight, nontoxicity, low cost, and ease of fabrication, the photocatalytic paper has good potential for visible light photocatalysis.
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