نتایج جستجو برای: nano tio2 and yeast extract

تعداد نتایج: 16887026  

2011
Yukiharu Uraoka

[Abstract] In order to fabricate new dye-sensitised solar cell, we proposed a new photoresponsive electrode structure using bio nano process. Carbon nanotube-TiO2 hybrid materials having multitudious nano-sclae cavities were realized using a bifunctional cage-shaped protein possessing carbonaceous material-binding peptides and Ti-binding peptides. The obtained structure was confirmed to consist...

2014
Chu Thi Thanh Binh Tiezheng Tong Jean-François Gaillard Kimberly A. Gray John J. Kelly

The nanotechnology industry is growing rapidly, leading to concerns about the potential ecological consequences of the release of engineered nanomaterials (ENMs) to the environment. One challenge of assessing the ecological risks of ENMs is the incredible diversity of ENMs currently available and the rapid pace at which new ENMs are being developed. High-throughput screening (HTS) is a popular ...

Journal: :international journal of nanoscience and nanotechnology 2008
z. ahmadi sh. afshar l. vafaee a. salehi

in this work, tio2 /sio2 (pure anatase), and tio2 /sio2 (anatase/rutile) nano-photocatalysts are prepared by using sol-gel method and control of acidity. the particles size is calculated using scheerer, s equation and is estimated to be around 7-15 nm. in order to improve the photocatalytic activity of tio2 /sio2 ,1% (wt) platinum particles are loaded on both catalysts using photoreductive meth...

Azam, Kamal , Ghasemi Koozekonan, Aysa , Golbabaei, Farideh , Kalantary, Saba , Karimi, Ali , Monazzam Esmaeilpour, Mohammad Reza ,

Introduction: The skin, can be exposed to harmful factors like ultraviolet radiation (UV). Exposure to this physical hazardous agent could be contributed to pigmentation, erythemas, early aging, skin cancer, and DNA damage. The aim of this study, therefore, was to fabricate the polyacrylonitrile (PAN) nanofibers with the UV protection property by the use of various concentrations of titanium di...

Journal: :Hacettepe Journal of Biology and Chemistry 2023

At this study; Chitosan was obtained from crayfish and identified by X-ray diffraction (XRD), molecular weight elemental analyses. Later, it coated on fabrics alone in combination with nano-metal.The protective properties of the investigated UV protection antibacterial Crayfish chitosan had low crystallinity (72%), (Mw) (11.2 kDa) degree deacetylation (DD) (16%). When used together, nano-TiO2 r...

Journal: :Nanotoxicology 2016
K Rajapakse D Drobne D Kastelec K Kogej D Makovec C Gallampois H Amelina G Danielsson L Fanedl R Marinsek-Logar S Cristobal

Key biological functions involved in cell survival have been studied to understand the difference between the impact of exposure to TiO2 nanoparticles (TiO2-NPs) and their bulk counterparts (bulk-TiO2). By selecting a unicellular eukaryotic model organism and applying proteomic analysis an overview of the possible impact of exposure could be obtained. In this study, we investigated the early re...

2011
Yin Ling Lam Chi Wai Kan Chun Wah Yuen

Flammability properties of plasma pretreated cotton fabrics subjected to flame-retardant treatment were studied. Plasma pretreatment, using an atmospheric pressure plasma jet (APPJ), was applied to cotton fabrics to enhance material properties, while retaining inherent advantages of the substrates. An organic phosphorus compound (flame-retardant agent, FR) together with a melamine resin (crossl...

Journal: :The Science of the total environment 2009
Xiaoke Hu Sean Cook Peng Wang Huey-Min Hwang

The recent advances in nanotechnology and the corresponding popular usage of nanomaterials have resulted in uncertainties regarding their environmental impacts. In this study, we used a systematic approach to study and compare the in vitro cytotoxicity of selected engineered metal oxide nanoparticles to the test organisms--E. coli. Among the seven test nano-sized metal oxides, ZnO, CuO, Al2O3, ...

2015
Anna Maria Ferrari Martina Pini Paolo Neri Federica Bondioli

The present study concerns the ecodesign of the application of an aqueous nano-TiO2 suspension on a porous limestone used in historical monuments with a spraying system through the LCA methodology, in order to define the most critical aspects of the process and to try to minimize the environmental burden during the implementation of the application process. Because of the limited knowledge curr...

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