Release and environmental impact of silver nanoparticles and conventional organic biocides from coated wooden façades

Künniger, Tina; Gerecke, Andreas C.; Ulrich, Andrea; Huch, Anja; Vonbank, R.; Heeb, Markus; Wichser, Adrian; Haag, Regula; Kunz, Petra; Faller, Markus

doi:10.1016/j.envpol.2013.09.030

Cited by 59 publications

(41 citation statements)

References 10 publications

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“…performance of ENP-enhanced facade coatings versus traditional ones: 36 % saw a noticeable improvement, 27 % noted gradually improved functionalities, while 37 % detected no improvement compared to traditional materials. This result coincides with the few studies available about this topic, for instance (Künniger et al 2014;Marolt et al 2011;Zhou et al 2002), where the functionality of coatings containing nano-TiO 2 (photocatalytic property), nano-SiO 2 (scratch resistance and elasticity), and nano-Ag (antimicrobial efficacy and Ag-ENP release) was evaluated. This reflects the significant challenges of achieving the desired functionalities in a facade coating simply from the knowledge of the properties of a particular ENP.…”

Section: Discussionsupporting

confidence: 89%

“…However, many different factors must be considered if the expected properties of nano-enhanced coatings are to fulfill their potential. Kaiser et al (2013), for instance, argued that it is currently not clear whether ENPs in paints will achieve all their promised benefits, just as other studies have raised concerns about the utility of TiO 2 -ENPs (Marolt et al 2011;Saha et al 2011), SiO 2 -ENPs (Künniger et al 2010;Zhou et al 2002), and Ag-ENPs (Künniger et al 2014;Plaschkies et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Nanoparticles in facade coatings: a survey of industrial experts on functional and environmental benefits and challenges

et al. 2015

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Integrating engineered nanoparticles (ENPs) into facade coatings is expected to offer considerable potential for improved or novel functionality, or even several functionalities at the same time (multifunctional materials). Little information is available about the tangible use of ENPs in facade coatings and the real improvements that their functionalities provide. In order to increase this information, we carried out a survey among selected coating manufacturers and ENP producers in Europe. We asked them about the improved functionalities enabled by ENPs, the quality of nanoenhanced facade coatings in comparison to conventional ones, and the handling of waste. The survey results indicated that the ENPs most frequently used in facade coatings in Europe were silver, titanium dioxide, and silicon dioxide. The most frequently mentioned potential benefits were ultraviolet-protection, water and dirt repellency (easy to clean), and antimicrobial properties. Improving environmental performance through the use of nano-enhanced facade coatings did not appear to be a focus for innovation. The survey also revealed mixed results in the comparison between nano-enhanced and conventional facade coatings: 36 % of respondents saw a notable improvement, 27 % noted a gradual improvement of functionalities, and 37 % detected no improvement over traditional materials. Some respondents mentioned a variety of tests that can be applied to investigate the quality of coating functionalities. These tests could be valuable in helping us to better understand the tangible improvements of nano-enhanced facade coating functionalities. Respondents were uncertain about how to properly handle the wastes resulting from nano-enhanced products.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Nanoparticles in facade coatings: a survey of industrial experts on functional and environmental benefits and challenges

et al. 2015

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“…The chemical form of silver changes the stress impact since AgNPs were stronger stress factors than Ag þ at the same concentration (Qian et al, 2013;Künniger et al, 2014), suggesting that both treatments had not reached optimal biocide impact.…”

Section: Biocide Effect On the Algal Developmentmentioning

confidence: 96%

Efficacy of different chemical mixtures against green algal growth on limestone: A case study with Chlorella vulgaris

Eyssautier‐Chuine¹,

Vaillant‐Gaveau²,

Gommeaux³

et al. 2015

International Biodeterioration & Biodegradation

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“…Further theoretical details on DGT will not be covered here and can be found elsewhere (Davison & Zhang, 2012;Mongin et al, 2013;Uribe et al, 2011). In relation to nanomaterial and the measurement of solubility, past studies have used DGT in the context of ecotoxicological studies of several nanomaterials, for example silver (Kunniger et al, 2014), copper oxide (Odzak et al, 2014) and zinc oxide (Odzak et al, 2014).…”

Section: Ion Exchangementioning

confidence: 99%

Suitability of analytical methods to measure solubility for the purpose of nanoregulation

et al. 2015

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Solubility is an important physicochemical parameter in nanoregulation. If nanomaterial is completely soluble, then from a risk assessment point of view, its disposal can be treated much in the same way as "ordinary" chemicals, which will simplify testing and characterisation regimes. This review assesses potential techniques for the measurement of nanomaterial solubility and evaluates the performance against a set of analytical criteria (based on satisfying the requirements as governed by the cosmetic regulation as well as the need to quantify the concentration of free (hydrated) ions). Our findings show that no universal method exists. A complementary approach is thus recommended, to comprise an atomic spectrometry-based method in conjunction with an electrochemical (or colorimetric) method. This article shows that although some techniques are more commonly used than others, a huge research gap remains, related with the need to ensure data reliability.

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Release and environmental impact of silver nanoparticles and conventional organic biocides from coated wooden façades

Cited by 59 publications

References 10 publications

Nanoparticles in facade coatings: a survey of industrial experts on functional and environmental benefits and challenges

Nanoparticles in facade coatings: a survey of industrial experts on functional and environmental benefits and challenges

Efficacy of different chemical mixtures against green algal growth on limestone: A case study with Chlorella vulgaris

Suitability of analytical methods to measure solubility for the purpose of nanoregulation

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