Towards the development of safer by design TiO₂-based photocatalytic paint: impacts and performances

Abstract

Addition of titanium dioxide (TiO2) (nano)particles in photocatalytic paints represents a promising alternative aiming to mineralize gaseous pollutants, such as Volatile Organic Compounds (VOCs), into innocuous species (H2O and CO2)....

CNC/AgNP hybrids as safer-by-design biocides in paints

“…Before artificial weathering, the R0 and CNC paints released 20 times more particles during the abrasion than paints containing CNC/Ag hybrids. Interestingly, the particle emission decreases with the increase of artificial weathering time, as similarly observed by Rosset et al 41 Such a behavior can be related to the degradation of the paint by UV light, which induced detrimental paint properties leading to the emission of bigger aggregates during the abrasion process. Because of their size, it could be supposed that these aggregates were probably out of the CPC measurement range.…”

“…Paints formulation. All the paints were formulated and prepared by the manufacturer ALLIOS (France), following the preparation method proposed in the work of Rosset et al 41 . Briefly, the organic-based paint was composed of an acrylic base (binder), micro-sized TiO 2 which provides the white color of the paint, calcium carbonate particles, aluminosilicate, water and other additives.…”

Sustainable catalytic oxidation of 1,3-butadiene over dispersedly assembled Ce0.027W0.02Mn0.054TiOxfeaturing synergistic redox cycles

“…5b, two peaks at 464.5 (Ti2p1/2) and 458.7 eV (Ti2p3/2) labeled in green color were assigned to Ti 4+ states. 47 The negative shift of Ti2p3/2 in Mn-containing catalysts implied the existence of Ti 3+ . 23 Indeed, one couple of peaks at 457.8 eV and 462.9 eV could be assigned to Ti 3+ 2p 3/2 and 2p 1/2 .…”

The State of the Art and Challenges of In Vitro Methods for Human Hazard Assessment of Nanomaterials in the Context of Safe-by-Design

“…Coating NMs with surface ligands or grafting them on an inert matrix such as cellulose has also been tested as a SbD intervention to produce safe(r) photocatalytic paints containing TiO 2 NMs. Coating TiO 2 NMs with polyethylene glycol (PEG), poly(acrylic acid) (PAA), or 3,4-dihydroxy-L-phenylalanine (DOPA) increased the stability of the doped paint and its resistance to weathering and abrasion, while their grafting on cellulose fibres enhanced their photocatalytic properties, thereby allowing for the reduction of the amount of NMs necessary to reach efficient photocatalysis [ 38 ]. Again, sonicating these surface-coated TiO 2 NMs or TiO 2 -containing composites might lead to the reduction of the effect of SbD interventions.…”