Please confirm you are human (Sign Up for free to never see this)
← Back to Search
Comparative Eco-toxicity Of Nanoscale TiO2, SiO2, And ZnO Water Suspensions.
L. K. Adams, D. Lyon, P. Alvarez
Published 2006 · Chemistry, Medicine
Save to my Library
Download PDFAnalyze on Scholarcy
The potential eco-toxicity of nanosized titanium dioxide (TiO(2)), silicon dioxide (SiO(2)), and zinc oxide (ZnO) water suspensions was investigated using Gram-positive Bacillus subtilis and Gram-negative Escherichia coli as test organisms. These three photosensitive nanomaterials were harmful to varying degrees, with antibacterial activity increasing with particle concentration. Antibacterial activity generally increased from SiO(2) to TiO(2) to ZnO, and B. subtilis was most susceptible to their effects. Advertised nanoparticle size did not correspond to true particle size. Apparently, aggregation produced similarly sized particles that had similar antibacterial activity at a given concentration. The presence of light was a significant factor under most conditions tested, presumably due to its role in promoting generation of reactive oxygen species (ROS). However, bacterial growth inhibition was also observed under dark conditions, indicating that undetermined mechanisms additional to photocatalytic ROS production were responsible for toxicity. These results highlight the need for caution during the use and disposal of such manufactured nanomaterials to prevent unintended environmental impacts, as well as the importance of further research on the mechanisms and factors that increase toxicity to enhance risk management.
This paper references
Reactive oxygen species (ROS) and reactive nitrogen species (RNS) generation by silica in inflammation and fibrosis.
B. Fubini (2003)
Handbook of microbiological media
R. Atlas (1993)
Photocatalytic activity, antibacterial effect, and photoinduced hydrophilicity of TiO2 films coated on a stainless steel substrate.
J. Yu (2003)
Ultrafine titanium dioxide particles in the absence of photoactivation can induce oxidative damage to human bronchial epithelial cells.
Jia-Ran Gurr (2005)
Kinetics of Ultrasonic Disinfection of Escherichia coli in the Presence of Titanium Dioxide Particles
M. Kubo (2005)
Hybrid organic/inorganic reverse osmosis (RO) membrane for bactericidal anti-fouling. 1. Preparation and characterization of TiO2 nanoparticle self-assembled aromatic polyamide thin-film-composite (TFC) membrane.
S. Y. Kwak (2001)
Chemically Enhanced Sunlight for Killing Bacteria
S. Block (1997)
Effect of Particle-Size and Heating Temperature of Ceramic Powders on Antibacterial Activity of Their Slurries
J. Sawai (1996)
Polymerization of a hydantoinylsiloxane on particles of silicon dioxide to produce a biocidal sand
J. Liang (2005)
Bactericidal Activity of Photocatalytic TiO2 Reaction: toward an Understanding of Its Killing Mechanism
P. Maness (1999)
REGULATING CHEMICALS: Concerns regarding REACH, nanomaterials, biomonitoring voiced at GlobalChem meeting
C. Hogue (2005)
Cytotoxicity evaluation of ceramic particles of different sizes and shapes.
A. Yamamoto (2004)
Bactericidal action of illuminated TiO2 on pure Escherichia coli and natural bacterial consortia: post-irradiation events in the dark and assessment of the effective disinfection time
A. Rincon (2004)
Anatase TiO2 nanocomposites for antimicrobial coatings.
Guifen Fu (2005)
Photocatalytic Disinfection of Indoor Air
D. Y. Goswami (1997)
Bacterial cell association and antimicrobial activity of a C60 water suspension.
D. Lyon (2005)
Photocatalytic degradation of cellulose bleaching effluent by supported TiO2 and ZnO.
M. Yeber (2000)
TiO2-Mediated Photochemical Disinfection of Escherichia coli Using Optical Fibers.
T. Matsunaga (1995)
Bactericidal Activity of TiO2 Photocatalyst in Aqueous Media: Toward a Solar-Assisted Water Disinfection System.
C. Wei (1994)
Solar and photocatalytic disinfection of protozoan, fungal and bacterial microbes in drinking water.
J. Lonnen (2005)
Use of coaxial photocatalytic reactor ( CAPHORE ) in the TiO 2 photo - assisted treatment of mixed Escherichia coli and Bacillus subtilis and the bacterial community present in wastewater
A. G. Rincon (2005)
Evaluation of Growth Inhibitory Effect of Ceramics Powder Slurry on Bacteria by Conductance Method
J. Sawai (1995)
Use of coaxial photocatalytic reactor (CAPHORE) in the TiO2 photo-assisted treatment of mixed E-coli and Bacillus sp and bacterial community present in wastewater
A. Rincon (2005)
Effect of Ceramic Powder Slurry on Spores of Bacillus subtilis
J. Sawai (1995)
This paper is referenced by
Antimicroorganism activities comparison among ZnO, TiO2, MgO and SiO2 nanoparticles suspensions at different pH values
L. Zhang (2010)
Acute toxicity of Ag and CuO nanoparticle suspensions against Daphnia magna: the importance of their dissolved fraction varying with preparation methods.
H. Jo (2012)
ZnO particulate matter requires cell contact for toxicity in human colon cancer cells.
P. Moos (2010)
Method development for the characterization of transport processes of engineered nanoparticles in saturated soils with focus on silver nanoparticles
A. Braun (2015)
ZnO as photocatalyst: An approach to waste water treatment
Nandini Roy (2020)
Evaluation of the solar photocatalytic degradation of organochlorine compound trichloroethanoic acid using titanium dioxide and zinc oxide in the Caribbean region
K. Tota-Maharaj (2015)
Assessing the effects of titanium dioxide nanoparticles on microbial communities in stream sediment using artificial streams and high throughput screening
A. Ozaki (2013)
Attachment of peri-implant pathogens to laser melted abutments and the development of a novel antimicrobial coating.
Clotilde Haury (2019)
Dissolution of ZnO nanoparticles at circumneutral pH: a study of size effects in the presence and absence of citric acid.
Imali A. Mudunkotuwa (2012)
Algae Pseudokircheriella subcapitata in environmental hazard evaluation of chemicals and synthetic nanoparticles
V. Aruoja (2011)
Limit-test toxicity screening of selected inorganic nanoparticles to the earthworm Eisenia fetida
L. Heckmann (2011)
Nanosheet and nanosphere morphology dominated photocatalytic & antibacterial properties of ZnO nanostructures
R. Singh (2019)
Effect of nanocomposite packaging containing Ag and ZnO on inactivation of Lactobacillus plantarum in orange juice
A. Emamifar (2011)
Stability of oxidized single-walled carbon nanotubes in the presence of simple electrolytes and humic acid
M. Li (2010)
Toxic impact of nanomaterials on microbes, plants and animals
Mohammed Nadim Sardoiwala (2017)
Antimicrobial Effects of Chemically Functionalized and/or Photo-Heated Nanoparticles
L. Pezzi (2019)
Effects of Engineered Nanoparticles on Bacteria
C. Xie (2018)
Toward Sustainable Nanoproducts
H. Şengül (2008)
Removal of 4-chloro-2-methylphenoxyacetic acid from water by sorption on carbon nanotubes and metal oxide nanoparticles
A. Martino (2012)
Photodecomposition effects of graphene oxide coated on TiO2 thin film prepared by electron-beam evaporation method
Nguyen Tri Khoa (2012)
Mechanism of photogenerated reactive oxygen species and correlation with the antibacterial properties of engineered metal-oxide nanoparticles.
Y. Li (2012)
Nano-WS2 embedded PES membrane with improved fouling and permselectivity.
Jiuyang Lin (2013)
Disinfection of Water and Wastewater Using ZnO Nanofluids - Effect of Shaking Speed of Incubator
L. Zhang (2011)
Effects of Zinc Oxide Nanoparticles on Panagrellus redivivus (Nematoda) and Folsomia candida (Collembola) in Various Test Media
Lola Virág Kiss (2018)
Mechanistic investigation on microbial toxicity of nano hydroxyapatite on implant associated pathogens.
K. Baskar (2017)
Harvesting of Bioenergy and Biomaterials from Marine Resources
Kaisar Ali (2020)
Bacterial toxicity of oxide nanoparticles and their effects on bacterial surface biomolecules
W. Jiang (2011)
Killing two birds with one stone: To eliminate the toxicity and enhance the photocatalytic property of CdS nanobelts by assembling ultrafine TiO2 nanowires on them
Xin Yu (2018)
Influence of soil properties on the toxicity of TiO₂ nanoparticles on carbon mineralization and bacterial abundance.
M. Simonin (2015)
Chapter 15 – Scientometric overview regarding the nanobiomaterials in antimicrobial therapy
Ozcan Konur (2016)
Comparative toxicity of several metal oxide nanoparticle aqueous suspensions to Zebrafish (Danio rerio) early developmental stage
Xiaoshan Zhu (2008)
Insights and controversies on sunscreen safety
J. P. Paiva (2020)See more