Electrospun tungsten trioxide nanofibers decorated with palladium oxide nanoparticles exhibiting enhanced photocatalytic activity

Hoik Lee; Myungwoong Kim; Daewon Sohn; Seong Hun Kim; Seong-Geun Oh; Seung Soon Im; Ick Soo Kim

doi:10.1039/C6RA24935C

Electrospun tungsten trioxide nanofibers decorated with palladium oxide nanoparticles exhibiting enhanced photocatalytic activity†

Hoik Lee,^a Myungwoong Kim,^b Daewon Sohn,^c Seong Hun Kim,^d Seong-Geun Oh,^e Seung Soon Im*^f and Ick Soo Kim*^a

* Corresponding authors

^a Nano Fusion Technology Research Lab, Division, of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research, (ICCER), Shinshu University, 3-15-1, Tokida, Ueda, Nagano 386-8567, Japan
E-mail: kim@shinhsu-u.ac.jp

^b Department of Chemistry, Inha University, Incheon 22212, Korea

^c Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 133-791, Korea

^d Department of Chemical Engineering, Hanyang University, Seoul 133-791, Korea

^e Department of Organic and Nano Engineering, College of Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, Korea

^f Department of Organic and Nano Engineering, College of Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, Korea
E-mail: imss007@hanyang.ac.kr

Abstract

Tungsten trioxide (WO₃) based nanofibers have many advantages as photocatalysts due to its band gap which fits with readily accessible light sources. We successfully fabricated novel palladium oxide (PdO) particles decorated WO₃ nanofibers by electrospinning combined with chemical deposition processes, leading to improved photocatalytic efficiency for organic dye degradation up to 86.4%. Morphologies, elemental compositions and structural analyses confirmed the successful uniform decoration of PdO particles along WO₃ nanofibers. Photodegradation of methylene blue as a model pollutant in water media was performed under UV and visible light in the presence of fabricated nanofibers as a photocatalyst. As a result, improved photocatalytic activity by PdO decoration was observed compared to commercially available WO₃ NFs without PdO, attributed to its ability to hold excited electrons and increase surface area of NFs. This fibrous hybrid catalytic materials platform will open up a new and practical route and stimulate further research to improve photocatalytic performance.

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Electrospun tungsten trioxide nanofibers decorated with palladium oxide nanoparticles exhibiting enhanced photocatalytic activity†

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Electrospun tungsten trioxide nanofibers decorated with palladium oxide nanoparticles exhibiting enhanced photocatalytic activity

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