期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 240, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2019.122205
关键词
Eggshell membrane; Biomorphic metal oxide fibrous networks; Photocatalysis; Self-contacted p-n junctions
资金
- Romanian National Authority for Scientific Research and Innovation, CNCS/CCCDI - UEFISCDI [PN19-03, 21 N/February 08]
- Romanian Ministry of Research and Innovation through Operational Programme Competitiveness [PN-III-P2-2.1-PED-2016-1249]
- [NANOBIOSURF-SMIS 103528]
Three-dimensional (3D) fibrous networks based on metal oxides were obtained by a bio-inspired approach: the replication of an ecological daily-waste, the eggshell membrane (ESM). The biomorphic process consists in the immersion of the ESM into aqueous solutions containing the metal salt precursors followed by the calcination of the metal ions impregnated ESM. Biomorphic ZnO, CuO and ZnO-CuO composite networks were obtained, their morphological, structural, compositional, optical, photocatalytical and electrical properties being evaluated. The scanning electron microscopy investigations proved that the hierarchical structure of the original organic template is perfectly replicated into inorganic architectures consisting of interconnected fibers containing metal oxide nanoparticles as building blocks. The photocatalytical properties of the metal oxide networks under solar simulator irradiation were tested through the degradation of methylene blue. Using Si/SiO2 patterned with interdigitated metallic electrodes as substrates during the calcination step, the electrical properties of the selfcontacted metal oxide networks were investigated. Thus, by replicating the unique architecture of the ESM, 3D metal oxide interwoven meshwork can be easily developed for various applications in fields such as photocatalysis, sensing, optoelectronic devices, etc.
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