دورية أكاديمية
Layer-by-Layer Spray-Coating of Cellulose Nanofibrils and Silver Nanoparticles for Hydrophilic Interfaces
| العنوان: | Layer-by-Layer Spray-Coating of Cellulose Nanofibrils and Silver Nanoparticles for Hydrophilic Interfaces |
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| المؤلفون: | Chen, Qing, Brett, Calvin J., Chumakov, Andrei, Gensch, Marc, Schwartzkopf, Matthias, Körstgens, Volker, Söderberg, L. Daniel, Plech, Anton, Zhang, Peng, Müller-Buschbaum, Peter, Roth, Stephan V. |
| المصدر: | ACS applied nano materials, 4 (1), 503–513 ; ISSN: 2574-0970, 2574-0970 |
| بيانات النشر: | American Chemical Society |
| سنة النشر: | 2021 |
| المجموعة: | KITopen (Karlsruhe Institute of Technologie) |
| مصطلحات موضوعية: | silver, nanoparticles, self-assembly, cellulose, nanofibrils, layer-by-layer, deposition, spray-coating, ddc:600, Technology, info:eu-repo/classification/ddc/600 |
| الوصف: | Silver nanoparticles (AgNPs) and AgNP-based composite materials have attracted growing interest due to their structure-dependent optical, electrical, catalytic, and stimuli-responsive properties. For practical applications, polymeric materials are often combined with AgNPs to provide flexibility and offer a scaffold for homogenous distribution of the AgNPs. However, the control over the assembly process of AgNPs on polymeric substrates remains a big challenge. Herein, we report the fabrication of AgNP/cellulose nanofibril (CNF) thin films via layer-by-layer (LBL) spray-coating. The morphology and self-assembly of AgNPs with increasing number of spray cycles are characterized by atomic force microscopy (AFM), grazing-incidence small-angle X-ray scattering (GISAXS), and grazing-incidence wide-angle X-ray scattering (GIWAXS). We deduce that an individual AgNP (radius = 15 ± 3 nm) is composed of multiple nanocrystallites (diameter = 2.4 ± 0.9 nm). Our results suggest that AgNPs are assembled into large agglomerates on SiO2 substrates during spray-coating, which is disadvantageous for AgNP functionalization. However, the incorporation of CNF substrates contributes to a more uniform distribution of AgNP agglomerates and individual AgNPs by its network structure and by absorbing the partially dissolved AgNP agglomerates. Furthermore, we demonstrate that the spray-coating of the AgNP/CNF mixture results in similar topography and agglomeration patterns of AgNPs compared to depositing AgNPs onto a precoated CNF thin film. Contact-angle measurements and UV/vis spectroscopy suggest that the deposition of AgNPs onto or within CNFs could increase the hydrophilicity of AgNP-containing surfaces and the localized surface plasmon resonance (LSPR) intensity of AgNP compared to AgNPs sprayed on SiO2 substrates, suggesting their potential applications in antifouling coatings or label-free biosensors. Thereby, our approach provides a platform for a facile and scalable production of AgNP/CNF films with a low agglomeration rate by two ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/wos/000613246600056; info:eu-repo/semantics/altIdentifier/issn/2574-0970; https://publikationen.bibliothek.kit.edu/1000128282Test; https://publikationen.bibliothek.kit.edu/1000128282/149445216Test; https://doi.org/10.5445/IR/1000128282Test |
| DOI: | 10.5445/IR/1000128282 |
| الإتاحة: | https://doi.org/10.5445/IR/1000128282Test https://doi.org/10.1021/acsanm.0c02819Test https://publikationen.bibliothek.kit.edu/1000128282Test https://publikationen.bibliothek.kit.edu/1000128282/149445216Test |
| حقوق: | https://creativecommons.org/licenses/by/4.0/deed.deTest ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.D70AEF41 |
| قاعدة البيانات: | BASE |
| DOI: | 10.5445/IR/1000128282 |
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