具植物表面微結構之電活性光觸媒蠶絲蛋白膜

林欣慧

doi:10.6840/cycu202100672

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具植物表面微結構之電活性光觸媒蠶絲蛋白膜

Electroactive photocatalytic silk fibroin films with plant surface microstructure

林欣慧 , Masters　　Advisor：楊大毅　　

繁體中文 DOI： 10.6840/cycu202100672

蠶絲蛋白；表面結構；親疏水性質；二級結晶結構；光觸媒；電活性； silk fibroin ； surface structure ； hydrophobic properties ； secondary structure ； photodegradation ； electroactivity

Abstract │ Reference (53) │ Altmetrics

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Recently, the impact of plastic waste on the environment has become more and more serious. Thus, the green materials become the focus of public attention. The properties of the materials is crucial for developing green materials.
  In this study, we successfully replicated the microstructure of the leaves onto the silk fibroin films. The surface structure and hydrophobicity of the silk fibroin film can be determined by scanning electron microscope and water contact angle measurement, respectively. The chemical structures of the silk fibroin films were confirmed by Fourier-transform infrared spectroscopy and X-ray diffraction. The β-sheet structure could enhance the hydrophobic effect on the silk fibroin film and its tensile strength can reach 45 MPa. Furthermore, titanium dioxide and aniline tetramer were introduced on the silk fibroin film. We can use ultraviolet–visible spectrophotometry and cyclic voltammetry to monitor the photodegradation rate of the composite films and their electrochromic phenomenon, respectively.
  These experimental results showed that the leaves surface structure can increase the hydrophobicity of the silk fibroin film without affecting the original silk fibroin properties. Moreover, the silk fibroin film has the functions of photodegradation and electroactivity after introducing the titanium dioxide and aniline tetramer.

Reference ( 53 ) 〈TOP〉

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[3] W. Barthlott, M. Mail, B. Bhushan, and K. Koch, "Plant Surfaces: Structures and Functions for Biomimetic Applications," in Springer Handbook of Nanotechnology, B. Bhushan Ed. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017, pp. 1265-1305.
[4] C. Neinhuis and W. Barthlott, "Characterization and Distribution of Water-repellent, Self-cleaning Plant Surfaces," Annals of Botany, vol. 79, no. 6, pp. 667-677, 1997/06/01/ 1997, doi: https://doi.org/10.1006/anbo.1997.0400.
[5] B. Bhushan and Y. C. Jung, "Micro- and nanoscale characterization of hydrophobic and hydrophilic leaf surfaces," Nanotechnology, vol. 17, no. 11, pp. 2758-2772, 2006/05/16 2006, doi: 10.1088/0957-4484/17/11/008.

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