Reactivity of anatase and rutile titanium dioxide powder with hydrogen peroxide vapour: Implication for reactive coating systems for laundry enzymes
Research output: Contribution to journal › Journal article › peer-review
Standard
Reactivity of anatase and rutile titanium dioxide powder with hydrogen peroxide vapour : Implication for reactive coating systems for laundry enzymes. / Yucel Falco, Cigdem; Florea, Adrian-Florin; Shang, Lei; Simonsen, Ole; Andersen, Mogens Larsen; Risbo, Jens.
In: Powder Technology, Vol. 391, 2021, p. 353-361.Research output: Contribution to journal › Journal article › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Reactivity of anatase and rutile titanium dioxide powder with hydrogen peroxide vapour
T2 - Implication for reactive coating systems for laundry enzymes
AU - Yucel Falco, Cigdem
AU - Florea, Adrian-Florin
AU - Shang, Lei
AU - Simonsen, Ole
AU - Andersen, Mogens Larsen
AU - Risbo, Jens
N1 - Publisher Copyright: © 2021 Elsevier B.V.
PY - 2021
Y1 - 2021
N2 - The reactivity of solid particles of two forms of TiO2, rutile and anatase, with H2O2 vapour was investigated for use as reactive coatings protecting granular formulations of enzymes. Reactivity tests using potassium titanium oxide oxalate as a competition probe showed a high reactivity of anatase at both high and low H2O2 pressure, whereas rutile was moderately reactive only at high H2O2 pressure. Heating H2O2-treated rutile and anatase led to release of oxygen, but not of surface-bound H2O2. For rutile, electron spin resonance measurements showed formation of radical intermediates. Anatase showed a mechanism comprising reversible binding of H2O2 and catalytic cleavage of H2O2 without formation of radicals. Anatase-coated detergent enzyme granules confirmed the protection against H2O2 vapour. Overall, this work shows the potential of anatase as a reactive coating material in laundry granules as an alternative to the current formulation.
AB - The reactivity of solid particles of two forms of TiO2, rutile and anatase, with H2O2 vapour was investigated for use as reactive coatings protecting granular formulations of enzymes. Reactivity tests using potassium titanium oxide oxalate as a competition probe showed a high reactivity of anatase at both high and low H2O2 pressure, whereas rutile was moderately reactive only at high H2O2 pressure. Heating H2O2-treated rutile and anatase led to release of oxygen, but not of surface-bound H2O2. For rutile, electron spin resonance measurements showed formation of radical intermediates. Anatase showed a mechanism comprising reversible binding of H2O2 and catalytic cleavage of H2O2 without formation of radicals. Anatase-coated detergent enzyme granules confirmed the protection against H2O2 vapour. Overall, this work shows the potential of anatase as a reactive coating material in laundry granules as an alternative to the current formulation.
KW - Anatase
KW - Enzyme stability
KW - Hydrogen peroxide
KW - Reactive coating
KW - Rutile
U2 - 10.1016/j.powtec.2021.06.018
DO - 10.1016/j.powtec.2021.06.018
M3 - Journal article
AN - SCOPUS:85110548878
VL - 391
SP - 353
EP - 361
JO - Powder Technology
JF - Powder Technology
SN - 0032-5910
ER -
ID: 275944900