Abstract
A photoelectrochemical actuator based on poly(acrylic acid) gel loaded with TiO2 nanoparticles and copper(II) ions swells in a water-ethanol mixed solution under ultraviolet (UV) light due to photocatalytic reduction of copper(II) to copper(0) nanoparticles and oxidation of ethanol. After removal of UV light, the hydrogel gradually shrinks again due to aerobic oxidation of copper nanoparticles to copper(II) ions. A photoelectrochemical actuator based on poly(acrylic acid) gel loaded with TiO2 nanoparticles and silver(I) ions also swells in water under UV light due to photocatalytic reduction of silver(I) to silver(0) nanoparticles and oxidation of water. The hydrogel shrinks again under visible light due to re-oxidation of silver nanoparticles to silver(I) ions and reduction of oxygen molecules by the plasmon-induced charge separation. Partial swelling and shrinking of the hydrogel are also possible.
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References
Takada K, Tanaka N, Tatsuma T (2005) A redox actuator based on reversible formation of bond between poly(acrylic acid) gel and Cu2+ ion. J Electroanal Chem 585:120–127. doi:10.1016/j.jelechem.2005.07.024
Fujishima A, Honda K (1972) Electrochemical photolysis of water at a semiconductor electrode. Nature 238:37–38. doi:10.1038/238037a0
Takada K, Miyazaki T, Tanaka N, Tatsuma T (2006) Three-dimensional motion and transformation of a photoelectrochemical actuator. Chem Commun 2006:2024–2026. doi:10.1039/b600442c
Ohko Y, Tatsuma T, Fujii T, Naoi K, Niwa C, Kubota Y, Fujishima A (2003) Multicolor photochromism of TiO2 films loaded with Ag nanoparticles. Nat Mater 2:29–31. doi:10.1038/nmat796
Tatsuma T (2013) Plasmonic photoelectrochemistry: functional materials based on photoinduced reversible redox reactions of metal nanoparticles. Bull Chem Soc Jpn 86:1–9. doi:10.1246/bcsj.20120256
Tian Y, Tatsuma T (2005) Mechanisms and applications of plasmon-induced charge separation at TiO2 films loaded with gold nanoparticles. J Am Chem Soc 127:7632–7637. doi:10.1021/ja042192u
Yamaguchi T, Kazuma E, Sakai N, Tatsuma T (2012) Photoelectrochemical responses from polymer-coated plasmonic copper nanoparticles on TiO2. Chem Lett 41:1340–1342. doi:10.1246/cl.2012.1340
Kawahara K, Suzuki K, Ohko Y, Tatsuma T (2005) Electron transport in silver-semiconductor nanocomposite films exhibiting multicolor photochromism. Phys Chem Chem Phys 7:3851–3855. doi:10.1039/b511489f
Tatsuma T, Takada T, Miyazaki T (2007) UV light-induced swelling and visible light-induced shrinking of a TiO2-containing redox gel. Adv Mater 19:1249–1251. doi:10.1002/adma.200602386
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Tatsuma, T. (2014). Photoredox Reaction. In: Asaka, K., Okuzaki, H. (eds) Soft Actuators. Springer, Tokyo. https://doi.org/10.1007/978-4-431-54767-9_18
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DOI: https://doi.org/10.1007/978-4-431-54767-9_18
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