https://scholars.lib.ntu.edu.tw/handle/123456789/625214
標題: | Silver nanoparticle-deposited whey protein isolate amyloid fibrils as catalysts for the reduction of methylene blue | 作者: | Lai Y.-R Lai J.-T STEVEN SHENG-SHIH WANG Kuo Y.-C Lin T.-H. |
關鍵字: | Amyloid fibril; Catalysis; Silver nanoparticle | 公開日期: | 2022 | 卷: | 213 | 起(迄)頁: | 1098-1114 | 來源出版物: | International Journal of Biological Macromolecules | 摘要: | The unique structural characteristics and superior biocompatibility make the protein nanofibers promising immobilization platforms/substrates for catalysts/enzymes. Metal nanoparticles have been employed as the catalysts in industries due to their excellent catalytic activity and stability, whereas their high surface energy leads to nanoparticle aggregation, thereby hampering their catalytic performance. Here, amyloid fibril (AF) derived from whey protein isolate (WPI) was chosen as the support of silver nanoparticles (AgNP) and utilized for the catalytic reduction of methylene blue (MB). The one-dimensional amyloid-based hybrid materials (AgNP/WPI-AF) were first synthesized via chemical or photochemical route. The characterization of AgNP/WPI-AF by UV–vis spectrophotometry and electron microscopy revealed that the sizes of AgNP on WPI-AF's surface ranged from 2 to 30 nm. Next, the catalytic performances of AgNP/WPI-AF prepared by various routes for MB degradation were investigated. Additionally, the kinetic data were analyzed using two different models and the apparent rate constants and thermodynamic parameters were further determined accordingly. Moreover, the reusability of AgNP/WPI-AF was assessed by monitoring the percentage removal of MB over consecutive filtering cycles. Our results indicated that Langmuir-Hinshelwood-type mechanism better described the catalytic MB reduction using AgNP/WPI-AF. This work provides a nice example of application of nanoparticle-amyloid fibril composite materials for catalysis. © 2022 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131968658&doi=10.1016%2fj.ijbiomac.2022.06.016&partnerID=40&md5=bfaabb310e98fbb5f17d8ff9181afbad https://scholars.lib.ntu.edu.tw/handle/123456789/625214 |
ISSN: | 01418130 | DOI: | 10.1016/j.ijbiomac.2022.06.016 | SDG/關鍵字: | amyloid; methylene blue; silver nanoparticle; whey protein; amyloid; metal nanoparticle; methylene blue; silver; whey protein; Article; catalysis; catalyst; chemical analysis; circular dichroism; concentration (parameter); controlled study; electron microscopy; energy dispersive X ray spectroscopy; Fourier transform infrared spectroscopy; inductively coupled plasma mass spectrometry; kinetics; protein isolation; synthesis; thermodynamics; ultraviolet visible spectrophotometry; X ray diffraction; chemistry; Amyloid; Catalysis; Metal Nanoparticles; Methylene Blue; Silver; Whey Proteins |
顯示於: | 化學工程學系 |
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