Temperature dependence of wood photodegradation. Part 2: Evaluation by Arrhenius law

Preklet, Edina; Tolvaj, László; Bejó, László; Varga, Dénes

doi:10.1016/j.jphotochem.2018.01.008

Cited by 17 publications

(7 citation statements)

References 28 publications

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“…The infrared spectra were mathematically modified to present the differences between reads before and after the decay, as suggested in the literature. 17…”

Section: Methodsmentioning

confidence: 99%

Zinc oxide nanoparticles from microwave-assisted solvothermal process: Photocatalytic performance and use for wood protection against xylophagous fungus

Peres

Delucis

Amico

et al. 2019

Nanomaterials and Nanotechnology

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Nano- and micro-oxides are promising materials due to several interesting characteristics such as photocatalytic and antimicrobial role. In this work, zinc oxide nanorods were obtained by microwave-assisted solvothermal process and their photocatalytic performance and action for wood protection against wood-decay fungus was studied. The morphological (scanning electron microscopy and transmission electron microscopy analyses), microstructural (X-ray powder diffraction analysis) and chemical (infrared spectroscopy) characteristics of the oxide-based nanostructures were investigated. Moreover, photocatalytic performance was evaluated using methylene blue and methyl orange. The nanostructured zinc oxide was impregnated to pinewood samples at 1–5% content and tested for decay resistance using a white-rot fungus. Zinc oxide nanorods agglomerated as urchin-like structures presented high crystallinity, high purity, and high photocatalytic activity. Zinc oxide impregnation was effective in improving pinewood decay resistance, yielding similar protection compared to traditional wood preservative.

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“…The infrared spectra were mathematically modified to present the differences between reads before and after the decay, as suggested in the literature. 17…”

Section: Methodsmentioning

confidence: 99%

Zinc oxide nanoparticles from microwave-assisted solvothermal process: Photocatalytic performance and use for wood protection against xylophagous fungus

Peres

Delucis

Amico

et al. 2019

Nanomaterials and Nanotechnology

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“…The same light irradiation produced greater absorption change at 160 • C than at 30 • C. "The simultaneous thermal and UV treatment was found to generate much greater absorption increase than the sum of absorption increases generated by the individual thermal treatment and UV radiation, separately" [17,19]. The investigations presented that the Arrhenius law was effective 2 of 13 in interpreting the kinetics of photochemical alterations during the photodegradation of timber [20].…”

Section: Introductionmentioning

confidence: 92%

Effect of Water Leaching on Photodegraded Scots Pine and Spruce Timbers Monitored by FTIR Spectroscopy

Preklet

Tolvaj

Visi-Rajczi

et al. 2021

Forests

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The goal of this research was the systematic study and comparison of the divided individual effects of UV light irradiation and water leaching during artificial weathering. Spruce (Picea abies Karst.) and Scots pine (Pinus sylvestris L.) samples were irradiated by ultraviolet (UV) light. Another sequence of samples was treated with the combination of UV irradiation and water leaching. The total extent of UV treatment was 20 days for both series of samples. Time relation of UV irradiation and water leaching was 2:1. The chemical changes were observed by FTIR spectroscopy. The difference spectrum was used for determination of the chemical changes. Degradation of lignin was greater for the leached samples than for the pure UV treated samples. Scots pine suffered greater lignin degradation than spruce, and produced higher absorption increase on the absorption region of unconjugated carbonyls. The unconjugated carbonyl groups were the most responsive chemical elements to leaching. Spruce was more susceptible to leaching of unconjugated carbonyl groups than Scots pine. Two absorption bands of unconjugated carbonyl groups at 1706 and 1764 cm−1 wavenumbers were produced by photodegradation. The absorption band at 1764 cm−1 was more sensitive to water leaching than the band at 1706 cm−1.

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“…In addition to the type and intensity of the light source, temperature and humidity also affect the photodegradation of wood. Previous publications (Persza and Tolvaj 2012; Tolvaj et al 2013;Liu et al 2017;Varga et al 2017;Prekleta et al 2018) determined that temperature significantly influenced the degradation of wood. Tolvaj et al (2016) measured the effects of air, relative humidity, and temperature on the photodegradation of beech and spruce wood.…”

Section: Introductionmentioning

confidence: 96%

Photodegradation of three hardwood species by sunlight and xenon light sources

Liu

et al. 2019

BioRes

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The behavior of three hardwood species was investigated in response to natural and artificial light irradiation. The effects of irradiation were evaluated by their color measurement in the CIELab system and Fourier-transform infrared (FTIR) spectra. Both natural light irradiation and artificial light irradiation induced changes in color, such as yellowing and darkening, in the wood species. Comparative in-time evolution of changes in color during artificial light irradiation and natural light irradiation under indoor conditions resulted in an estimated acceleration index that ranged from 60× to 90×.The FTIR spectra highlighted specific changes in surface chemistry during irradiation. Ultraviolet light from natural or artificial sources primarily resulted in lignin degradation.

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Temperature dependence of wood photodegradation. Part 2: Evaluation by Arrhenius law

Cited by 17 publications

References 28 publications

Zinc oxide nanoparticles from microwave-assisted solvothermal process: Photocatalytic performance and use for wood protection against xylophagous fungus

Zinc oxide nanoparticles from microwave-assisted solvothermal process: Photocatalytic performance and use for wood protection against xylophagous fungus

Effect of Water Leaching on Photodegraded Scots Pine and Spruce Timbers Monitored by FTIR Spectroscopy

Photodegradation of three hardwood species by sunlight and xenon light sources

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