Apatite-coated titanium dioxide photocatalyst for air purification

Nonami, Toru; Hase, Hiroko; Funakoshi, Kunio

doi:10.1016/j.cattod.2004.06.112

Cited by 132 publications

(80 citation statements)

References 6 publications

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“…According to the post hoc test, acrylic resins containing Ap-TiO2 tended to be higher in mechanical properties than TiO2. A previous study has already noted that Ap-TiO2 did not decompose the medium (e.g., acrylic resin), since there was no direct contact between TiO2 and the medium due to the presence of apatite 42) . On this note, some pores were seen under SEM on the surface of acrylic resin with TiO2 particles after irradiation, whereas no pores were observed with ApTiO2.…”

Section: Discussionmentioning

confidence: 94%

Antifungal Effect of Acrylic Resin Containing Apatite-coated TiO2 Photocatalyst

et al. 2007

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The purpose of this study was to develop an acrylic resin with antifungal properties by leveraging the photocatalytic activity of apatite-coated titanium dioxide (Ap-TiO2). Candida albicans was used for antifungal activity assay of the specimen plates under ultraviolet A (UVA) with a black light source. Statistically significant decreases in cell viability in acrylic resins containing 5 wt％ and 10 wt％ Ap-TiO2 were observed after irradiation for two, four, and six hours (P<0.01), when compared to the control. As for the flexural strength and modulus values of acrylic resins mixed with Ap-TiO2 and TiO2 particles, they varied before and after irradiation. Among the tested specimens, a 5 wt％ content of Ap-TiO2 in acrylic resin exceeded the requirements of ISO 1567. It was thus suggested that acrylic resin containing 5 wt％ Ap-TiO2 could exert antifungal effects on C. albicans, while at the same time maintain adequate mechanical properties for clinical use.

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Section: Discussionmentioning

confidence: 94%

Antifungal Effect of Acrylic Resin Containing Apatite-coated TiO2 Photocatalyst

et al. 2007

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“…Hydroxyapatite modified Ag/TiO 2 exhibited better photocatalytic activity for acetone degradation under visible light irradiation when compared to Ag/TiO 2 , TiO 2 and P25 [161]. Hydroxyapatite [Ca 10 (PO 4 ) 6 (OH) 2 ] possess excellent adsorption capacity as well as biocompatibility [162]. The dye sensitized solar cells (DSSC) fabricated with Ag/N-TiO 2 showed an enhanced solar to electrical energy conversion efficiency of 8.15% compared to DSSC composed of unmodified TiO 2 which shows 2.19% conversion efficiency under simulated solar irradiation of 100 mW cm −2 with AM 1.5 G [163].…”

Section: Photocatalytic Activity Of Silver Deposited Titania (Ag/tio 2 )mentioning

confidence: 99%

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

Devi

Kavitha

2016

Applied Surface Science

307

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“…These nanomaterials were shown to be effective in air purification systems (Kim et al 2006;Nonami et al 2004) and groundwater and wastewater treatments (Elliott and Zhang 2001;Hu et al 2005) due to their unique properties such as higher surface area to volume ratio and higher reactivity compared to regular materials of the same chemical composition. While some applications of nanomaterials such as in environmental remediation have already been investigated comprehensively, the possibilities of applying nanotechnology to address issues with gas emissions from swine facilities have not yet been explored.…”

Section: Introductionmentioning

confidence: 99%

Mixing nanoparticles with swine manure to reduce hydrogen sulfide and ammonia emissions

Alvarado

Predicala

Asis

2014

Int. J. Environ. Sci. Technol.

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Addition of nanoparticles into swine manure was investigated as a possible measure to mitigate the emissions of hydrogen sulfide and ammonia from swine production facilities. Bench-scale experiments were conducted, followed by room-scale tests in controlled environment chambers closely representing actual swine production rooms. Among the 12 types of commercial nanoparticles tested, zinc oxide nanoparticles achieved significant reduction in gaseous hydrogen sulfide and ammonia concentrations when mixed into the manure at a rate of 3 g zinc oxide nanoparticles per liter of manure slurry. Room-scale experiments showed that mean initial hydrogen sulfide concentrations of 596, 57 and 39 ppm measured at the pit, animal and human levels within each chamber, respectively, were reduced significantly to 5, 1 and 1 ppm, respectively, after the addition of zinc oxide nanoparticles into the manure. Effectiveness of the treatment was persistent in maintaining low hydrogen sulfide level up to 15 days after treatment application. Pig performance and manure nutrient properties were not adversely affected by the application of zinc oxide nanoparticles.

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Apatite-coated titanium dioxide photocatalyst for air purification

Cited by 132 publications

References 6 publications

Antifungal Effect of Acrylic Resin Containing Apatite-coated TiO2 Photocatalyst

Antifungal Effect of Acrylic Resin Containing Apatite-coated TiO2 Photocatalyst

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

Mixing nanoparticles with swine manure to reduce hydrogen sulfide and ammonia emissions

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