Characterization of photocatalytic paints: a relationship between the photocatalytic properties – release of nanoparticles and volatile organic compounds

Truffier-Boutry, Delphine; Fiorentino, Brice; Bartolomei, Vincent; Soulas, Romain; Sicardy, O.; Benayad, Anass; Damlencourt, Jean‐François; Pépin-Donat, Brigitte; Lombard, Christian; Gandolfo, Adrien; Wortham, Henri; Brochard, Grégory; Audemard, A.; Porcar, Lionel; Gebel, Gérard; Gligorovski, Sasho

doi:10.1039/c7en00467b

Cited by 40 publications

(45 citation statements)

References 47 publications

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“…On the other hand, the aging has no effect on paint containing CNC-TiO 2 hybrid nanoparticles. The effect of aging on the binder of the paint was previously observed by Truffier-Boutry et al [28]. Once the binder was degraded, nano-TiO 2 became more accessible to interact with mxylene; hence, increased the removal efficiency.…”

Section: 6cnc and Agingmentioning

confidence: 57%

“…In this work, two photocatalytic paints with 0.16 and 0.23% (w/w) of nano-TiO 2 have been studied. Photocatalytic paints with hybrid CNC-nano-TiO 2 and the photocatalytic paint with 3.5% of nano-TiO 2 PC 500 have been aged in a accelerated weathering chamber for 500 hours and 1000 hours according to the ISO norm 16474-3 [27,28]. Aging of 500 hours correspond to an important aging of paint and an aging of 1000 hours correspond to a paint of end-of-life.…”

Section: Preparation Of Paintsmentioning

confidence: 99%

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Key parameters influencing the uptake of m-xylene on photocatalytic paints

Morin

Gandolfo

Temime-Roussel

et al. 2020

Building and Environment

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: 6cnc and Agingmentioning

confidence: 57%

Section: Preparation Of Paintsmentioning

confidence: 99%

Key parameters influencing the uptake of m-xylene on photocatalytic paints

Morin

Gandolfo

Temime-Roussel

et al. 2020

Building and Environment

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“…Hodgson et al 269 assessed the performance of an air cleaner utilizing ultraviolet photochemical oxidation (often referred to as PCO technology). They reported a strong caution: “formaldehyde, acetaldehyde, acetone, formic acid and acetic acid were produced … due to incomplete mineralization of common VOCs.” Truffier‐Boutry et al 308 assessed photocatalytic paints and found “that the degradation of the organic matrix [of the paint itself] leads to the release of organic compounds (formaldehyde, methanol, acetaldehyde and formic acid) into the air….” This evidence supports a finding that partial oxidation of organic molecules can generate formic acid and acetic acid at levels of potential concern for indoor environmental quality.…”

Section: Acids and Basesmentioning

confidence: 99%

Indoor acids and bases

2020

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Numerous acids and bases influence indoor air quality. The most abundant of these species are CO2 (acidic) and NH3 (basic), both emitted by building occupants. Other prominent inorganic acids are HNO3, HONO, SO2, H2SO4, HCl, and HOCl. Prominent organic acids include formic, acetic, and lactic; nicotine is a noteworthy organic base. Sources of N‐, S‐, and Cl‐containing acids can include ventilation from outdoors, indoor combustion, consumer product use, and chemical reactions. Organic acids are commonly more abundant indoors than outdoors, with indoor sources including occupants, wood, and cooking. Beyond NH3 and nicotine, other noteworthy bases include inorganic and organic amines. Acids and bases partition indoors among the gas‐phase, airborne particles, bulk water, and surfaces; relevant thermodynamic parameters governing the partitioning are the acid‐dissociation constant (Ka), Henry's law constant (KH), and the octanol‐air partition coefficient (Koa). Condensed‐phase water strongly influences the fate of indoor acids and bases and is also a medium for chemical interactions. Indoor surfaces can be large reservoirs of acids and bases. This extensive review of the state of knowledge establishes a foundation for future inquiry to better understand how acids and bases influence the suitability of indoor environments for occupants, cultural artifacts, and sensitive equipment.

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“…Truffier-Boutry et al developed macro-sized and nano-sized TiO 2 -inclusive paints and studied their photocatalytic, microstructural, and morphological abilities in the process of understanding their environmental impacts [123]. Their main focus was to understand the main parameters that could control the expulsion of nano-sized particles from nano-TiO 2 and to bring out safer formulations of paints having salient characteristics, such as less inclusion of nano-sized photocatalytic particles with minimal VOC-releasing possibility.…”

Section: No X Removalmentioning

confidence: 99%

“…A probable mechanism involving a water molecule for the photocatalytic chlorobenzene conversion is presented. D. Truffier-Boutry et al formulated paints based on micro-sized and nano-sized TiO2 particles and studied their VOC emission/removal efficiency [123]. However, the results informed that few of the organic compounds, with a predominance of the harmful pollutant formaldehyde, and other compounds such as methanol, acetaldehyde, were removed upon light irradiation.…”

Section: Tio 2 Based Photocatalytic Composites For Voc Removalmentioning

confidence: 99%

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

et al. 2020

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Titanium dioxide (TiO2) has been extensively investigated in interdisciplinary research (such as catalysis, energy, environment, health, etc.) owing to its attractive physico-chemical properties, abundant nature, chemical/environmental stability, low-cost manufacturing, low toxicity, etc. Over time, TiO2-incorporated building/construction materials have been utilized for mitigating potential problems related to the environment and human health issues. However, there are challenges with regards to photocatalytic efficiency improvements, lab to industrial scaling up, and commercial product production. Several innovative approaches/strategies have been evolved towards TiO2 modification with the focus of improving its photocatalytic efficiency. Taking these aspects into consideration, research has focused on the utilization of many of these advanced TiO2 materials towards the development of construction materials such as concrete, mortar, pavements, paints, etc. This topical review focuses explicitly on capturing and highlighting research advancements in the last five years (mainly) (2014–2019) on the utilization of various modified TiO2 materials for the development of practical photocatalytic building materials (PBM). We briefly summarize the prospective applications of TiO2-based building materials (cement, mortar, concretes, paints, coating, etc.) with relevance to the removal of outdoor/indoor NOx and volatile organic compounds, self-cleaning of the surfaces, etc. As a concluding remark, we outline the challenges and make recommendations for the future outlook of further investigations and developments in this prosperous area.

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Characterization of photocatalytic paints: a relationship between the photocatalytic properties – release of nanoparticles and volatile organic compounds

Abstract: International audienc

Cited by 40 publications

References 47 publications

Key parameters influencing the uptake of m-xylene on photocatalytic paints

Key parameters influencing the uptake of m-xylene on photocatalytic paints

Indoor acids and bases

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

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