Bactericidal mode of titanium dioxide photocatalysis

Huang, Zuhao; Maness, Pin‐Ching; Blake, Daniel M.; Wolfrum, Edward J.; Smolinski, Sharon; Jacoby, William A.

doi:10.1016/s1010-6030(99)00205-1

Cited by 533 publications

(290 citation statements)

References 31 publications

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“…Various studies performed on Streptococcus sobrinus, E. coli and S. aureus with TiO 2 showed leakage of potassium ions from the bacteria and the parallel decrease in cell viability (70,72,(132)(133)(134)(135).…”

Section: Evaluation Of Changes In Membrane Permeabilitymentioning

confidence: 99%

Titanium Oxide Antibacterial Surfaces in Biomedical Devices

et al. 2011

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Int J Artif Organs ( 2011; : 9) 929-946 34 TITANIUM OXIDE AND ANTIBACTERIAL SURFACES IN BIOMEDICAL DEVICES Device-related infections: a clinical demand driving material science researchAn increasing number of clinical procedures requires the use of biomedical devices, whose widespread presence in modern therapeutic treatments is driving the demand for better performances and longer reliability. One of the major issues of both short-term devices and implantable prostheses is represented by device-related infections (DRIs) Accepted: August 31, 2011 rEViEW due to bacterial colonization and proliferation (1). About half of the 2 million cases of nosocomial infections that occur each year in the United States are associated with indwelling devices (2): these infections generally require a longer period of antibiotic therapy and repeated surgical procedures, resulting in potential risks for the patient and increased costs for the healthcare system. The planktonic bacteria that colonize a device surface tend to form a biofilm and the sessile bacterial cells, enclosed in a self-produced polymeric matrix of this kind, can withstand host immune responses and generally show extraordinary antibiotic resistance (3). Eventually, bacteria rapid multiply and disperse in planktonic form, giving rise

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Section: Evaluation Of Changes In Membrane Permeabilitymentioning

confidence: 99%

Titanium Oxide Antibacterial Surfaces in Biomedical Devices

et al. 2011

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“…The mixture was stirred (250 rpm) and irradiated with UV radiation or visible light for 40 min. After this time, the mixture was kept in the dark for 20 min for ensuring that the photocatalyst had no activity, which usually is still observed for a few minutes after being irradiated [21].…”

Section: Nitrogen Oxide (No) Deep Oxidationmentioning

confidence: 99%

Synthesis and assessment of a graphene-based composite photocatalyst

Magalhães

Ângelo

Sousa

et al. 2015

Biochemical Engineering Journal

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A novel composite photocatalyst prepared from graphene and commercial TiO2 (P25 from Evonik) was synthesized, exhibiting enhanced photocatalytic activity for methylene blue degradation, when com-pared with pristine P25. Additionally, the new catalyst showed 20% more NO conversion under UV light than P25. The band gap of the catalyst, obtained from diffuse reflectance, was 2.95 eV indicating an extended light absorption up to 420 nm. The novel photocatalyst was further tested for inactivating microorganisms showing better results than the reference photocatalyst. Under visible light, the viability loss of the reference bacterial strain Escherichia coli DSM 1103 was two times higher than with the bare P25; it was observed 29% of inactivation with the P25/graphene composite and 14% with the P25 sample, following standard ISO 27447:2009.

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“…[4][5][6][7] If biological particles, suspended in air or water, can be immobilized on a catalytic surface via a separation process, the effectively infinite residence time allows for the killing and eventual complete oxidation (mineralization) of the particle.…”

Section: Microfibrous Mesh Coated Withmentioning

confidence: 99%