期刊
FORESTS
卷 14, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/f14020247
关键词
conservation; restoration; wood; chelators; desferrioxamine B; siderophores; agarose; cultural heritage; green chelators; ferric oxides; ferric hydroxy-oxides
类别
This study investigated the potential of desferrioxamine B (DFO-B) as a chelator for removing ferric oxides/hydroxy-oxides from cultural heritage wooden substrates. The results showed that the alkaline hydrogel (pH 8.6) was the most effective formulation, followed by the acidic hydrogel (pH 6.5) and DFO-B ethanol gel. The DFO-B ethanol gels also showed potential as alternatives to hydrogels for water-sensitive cultural heritage substrates.
Cultural heritage (CH) wooden artifacts are often stained by iron oxides/hydroxy-oxides, which may have detrimental effects on wood. Their removal is a common conservation practice, and it is usually achieved with non-eco-friendly chelators, such as ethylene diamine tetra acetic acid (EDTA) and diethylene triamine penta acetic acid (DTPA). Siderophores are green materials that have been recently explored as chelators, given the currently growing environmental concerns. This work investigated desferrioxamine B (DFO-B), a promising siderophore that has not been adequately studied for its potential in removing ferric oxides/hydroxy-oxides from dry CH wooden substrates. Mock-ups of maple (Acer platanoides L.) were artificially stained with akaganeite and maghemite, and DFO-B was employed via hydrogels (pH: 6.5 and 8.6) and ethanol gels. The chelator efficacy was assessed using Energy-Dispersive Spectroscopy (EDS), Attenuated Total Reflection-Fourier Transform Infrared Spectroscopy (ATR-FTIR), Scanning Electron Microscopy (SEM) and colorimetry. The hydrogels' impact on the wood was also assessed using ATR-FTIR and colorimetry. The obtained results demonstrate that the most effective DFO-B formulation was the alkaline hydrogel (pH 8.6), followed by the acidic (pH 6.5) hydrogel and the DFO-B ethanol gel. No differences in wood chemistry or color were recorded when using pH 6.5 or 8.6. The DFO-B ethanol gels were also proven to be potential alternatives to hydrogels for use with water-sensitive CH substrates.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据