نتایج جستجو برای: ag tio2 nanoparticles

تعداد نتایج: 164926  

Journal: :Materials science & engineering. C, Materials for biological applications 2013
Mohammad Mansoob Khan Sajid Ali Ansari Jintae Lee Moo Hwan Cho

A novel nonenzymatic sensor for H2O2 was developed based on an Ag@TiO2 nanocomposite synthesized using a simple and cost effective approach with an electrochemically active biofilm. The optical, structural, morphological and electrochemical properties of the as-prepared Ag@TiO2 nanocomposite were examined by UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy and cyclic vol...

Journal: :Biosensors & bioelectronics 2017
Wen Zhou Bin-Cheng Yin Bang-Ce Ye

As one of the most toxic heavy metals, hexavalent chromium (Cr(VI)) has long been a concern due to its threats to human health and the environment. In this work, we develop a sensitive surface-enhanced Raman scattering (SERS) sensor for highly specific detection of Cr(VI) using hollow sea urchin-like TiO2@Ag nanoparticles (NPs). The TiO2@Ag NPs are functionalized with glutathione (GSH) and used...

2016
Adolfo A. Mosquera Jose M. Albella Violeta Navarro Debabrata Bhattacharyya Jose L. Endrino

The effect of silver on the phase transition and microstructure of titanium oxide films grown by pulsed cathodic arc had been investigated by XRD, SEM and Raman spectroscopy. Following successive thermal annealing up to 1000 °C, microstructural analysis of annealed Ag-TiO2 films reveals that the incorporation of Ag nanoparticles strongly affects the transition temperature from the initial metas...

2017
Duoduo Wu Jianzhong Ma Yan Bao Wanzhao Cui Tiancun Hu Jing Yang Yuanrui Bai

Porous Ag/TiO2/Au coatings with excellent multipactor suppression were prepared by fabrication of porous Ag surface through two-step wet chemical etching, synthesis of TiO2 coatings by electroless-plating-like solution deposition and deposition of Au coatings via electroless plating. Porous structure of Ag surface, TiO2 coatings on porous Ag surface and Au coatings on porous Ag/TiO2 surface wer...

2013
Talia E. Abbott Chalew Gaurav S. Ajmani Haiou Huang Kellogg J. Schwab

BACKGROUND Use of engineered nanoparticles (NPs) in consumer products is resulting in NPs in drinking water sources. Subsequent NP breakthrough into treated drinking water is a potential exposure route and human health threat. OBJECTIVES In this study we investigated the breakthrough of common NPs--silver (Ag), titanium dioxide (TiO2), and zinc oxide (ZnO)--into finished drinking water follow...

Journal: :Powder Technology 2021

Surface-modified Ag/TiO2 photocatalysts with enhanced activity under visible light and biocidal properties have been produced through a two-stage method involving the functionalization of TiO2 nanoparticles(NPs) –SH or –NH terminated alkoxysilanes deposition AgNPs. The process increased yield Ag promoted more homogeneous distribution over surface. highest stability, homogeneity range absorption...

Journal: :Journal of nanoscience and nanotechnology 2010
Xiaoqiang Zhang Lihong Yin Meng Tang Yuepu Pu

The objective of the present study was to develop a practical method to prepare a stable dispersion of TiO2 nanoparticles for biological studies. To address this matter a variety of different approaches for suspension of nanoparticles were conducted. TiO2 (rutile/anatase) dispersions were prepared in distilled water following by treated with different ultrasound energies and various dispersion ...

2016
Dimitrios Andreou Domna Iordanidou Ioannis Tamiolakis Gerasimos S. Armatas Ioannis N. Lykakis

In this study, we report the fabrication of mesoporous assemblies of silver and TiO2 nanoparticles (Ag/MTA) and demonstrate their catalytic efficiency for the selective reduction of nitroarenes. The Ag/TiO2 assemblies, which show large surface areas (119–128 m2 ̈g ́1) and narrow-sized mesopores (ca. 7.1–7.4 nm), perform as highly active catalysts for the reduction of nitroarenes, giving the corre...

2010
B. Tryba A. W. Morawski

Commercially available TiO2 of anatase structure produced in the Chemical Factory Police S.A. was modified by doping Ag from AgNO3 solution via photodeposition method. The obtained amount of deposited Ag on TiO2 was in the range of 0.11 to 0.98 mass %. Deposition of Ag on TiO2 resulted in the retarding of the recombination reaction and formation of the higher amount of OH radicals on the photoc...

2014
Hui Pan XiaoDong Wang ShaSha Xiao LaiGui Yu ZhiJun Zhang

Titanium dioxide (TiO2) nanoparticles surface-modified by octadecyltrimethoxysilane (commercial name WD-11) are prepared via in situ surface-modification in dehydrated ethanol at room temperature. As-obtained TiO2 nanoparticles are characterized by means of Fourier transform infrared spectrometry, thermogravimetric, X-ray diffraction and transmission electron microscope. The tribological proper...

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