نتایج جستجو برای: las tio2

تعداد نتایج: 164870  

2016
Janine Moll Annette Okupnik Alexander Gogos Katja Knauer Thomas D. Bucheli Marcel G. A. van der Heijden Franco Widmer

Titanium dioxide nanoparticles (TiO2 NPs) are in consideration to be used in plant protection products. Before these products can be placed on the market, ecotoxicological tests have to be performed. In this study, the nitrogen fixing bacterium Rhizobium trifolii and red clover were exposed to two TiO2 NPs, i.e., P25, E171 and a non-nanomaterial TiO2. Growth of both organisms individually and t...

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Journal: :Chemistry, an Asian journal 2014
Weijia Zhou Yu Guan Dongzhou Wang Xinhai Zhang Duo Liu Huaidong Jiang Jiyang Wang Xiaogang Liu Hong Liu Shaowei Chen

Heterostructures play an important role not only in the manufacture of semiconductor devices, but also in the field of catalysis. Herein, we report the synthesis of PdO/TiO2 and Pd/TiO2 heterostructured nanobelts by means of a simple co-precipitation method, followed by a reduction process using surface-modified TiO2 nanobelts as templates. The as-obtained heterostructures were characterized by...

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Journal: :Chemical communications 2014
Rajesh Kodiyath Maidhily Manikandan Lequan Liu Gubbala V Ramesh Satoshi Koyasu Masahiro Miyauchi Yoshiki Sakuma Toyokazu Tanabe Takao Gunji Thang Duy Dao Shigenori Ueda Tadaaki Nagao Jinhua Ye Hideki Abe

Skeletal gold nanocages (Au NCs) are synthesized and coated with TiO2 layers (TiO2-Au NCs). The TiO2-Au NCs exhibit enhanced photodecomposition activity toward acetaldehyde under visible light (>400 nm) illumination because hot electrons are generated over the Au NCs by local surface plasmon resonance (LSPR) and efficiently transported across the metal/semiconductor interface via the defect sta...

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Journal: :Dalton transactions 2013
Yong Yu Jun Chen Zi-Ming Zhou Yuan-Di Zhao

A facile method was used for the synthesis of CNTs@TiO2 nanocomposites using a simple apparatus at ambient pressure and temperature. CNTs@TiO2 exhibit core-shell structure without any interfacial adhesive layer on the CNT surface. The photodegradation of methyl orange suggests enhanced photoactivity of CNTs@TiO2 under UV light. The morphology, structure and composition of CNTs@TiO2 were also in...

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Journal: :Physical chemistry chemical physics : PCCP 2015
Simelys Hernández Diana Hidalgo Adriano Sacco Angelica Chiodoni Andrea Lamberti Valentina Cauda Elena Tresso Guido Saracco

Titanium dioxide (TiO2) and zinc oxide (ZnO) nanostructures have been widely used as photo-catalysts due to their low-cost, high surface area, robustness, abundance and non-toxicity. In this work, four TiO2 and ZnO-based nanostructures, i.e. TiO2 nanoparticles (TiO2 NPs), TiO2 nanotubes (TiO2 NTs), ZnO nanowires (ZnO NWs) and ZnO@TiO2 core-shell structures, specifically prepared with a fixed th...

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2012
E. Fraile-Nuez M. González-Dávila J. M. Santana-Casiano J. Arístegui I. J. Alonso-González S. Hernández-León M. J. Blanco A. Rodríguez-Santana A. Hernández-Guerra M. D. Gelado-Caballero F. Eugenio J. Marcello D. de Armas J. F. Domínguez-Yanes M. F. Montero D. R. Laetsch P. Vélez-Belchí A. Ramos A. V. Ariza I. Comas-Rodríguez V. M. Benítez-Barrios

Instituto Español de Oceanografı́a, Centro Oceanográfico de Canarias (IEO-COC). Santa Cruz de Tenerife, Spain, Universidad de Las Palmas de Gran Canaria, Instituto de Oceanografı́a y Cambio Global (IOCAG). Las Palmas, Spain, Universidad de Las Palmas de Gran Canaria, Banco Español de Algas (BEA). Las Palmas, Spain, Instituto Geográfico Nacional, Centro Geofı́sico de Canarias. Santa Cruz de Tenerif...

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Journal: :Nanoscale 2013
Renjiang Lü Wei Zhou Keying Shi Ying Yang Lei Wang Kai Pan Chungui Tian Zhiyu Ren Honggang Fu

Alumina (Al2O3) decorated anatase TiO2 nanotubes with ordered mesoporous pore walls (Al2O3/meso-TiO2 nanotubes) are successfully synthesized through vacuum pressure induction technology, and then combined with the thermal decomposition of a mesoporous TiO2 sol precursor, inside the cylindrical nanochannels of an anodic aluminium oxide (AAO) template. The decorated Al2O3 was formed by in situ de...

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2014
Weirong Zhao Zhuyu Ai Jiusong Dai Meng Zhang

BACKGROUND PURPOSE Photocatalytic water splitting for hydrogen evolution is a potential way to solve many energy and environmental issues. Developing visible-light-active photocatalysts to efficiently utilize sunlight and finding proper ways to improve photocatalytic activity for H2 evolution have always been hot topics for research. This study attempts to expand the use of sunlight and to enha...

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2010
Juan Matos Corinne Ferronato

The influence of activated carbon on the activity of TiO2 in toluene photooxidation was studied to verify the efficiency of both materials working ensemble. Results showed that surface pH and more strongly the surface area of activated carbon influence the TiO2 photoactivity. Results suggest that toluene adsorbed on carbon diffuses to TiO2 where photooxidation takes place. In conclusion, TiO2-a...

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2017
U. L. N. H. Senarathna S. S. N. Fernando T. D. C. P. Gunasekara M. M. Weerasekera H. G. S. P. Hewageegana N. D. H. Arachchi H. D. Siriwardena P. M. Jayaweera

BACKGROUND The antibacterial activity of 21 nm TiO2 nanoparticles (NPs) and particles modified with Garcinia zeylanica (G. zeylanica) against Methicillin resistant Staphylococcus aureus was investigated in the presence and absence of light. RESULTS Surface modification of TiO2 NPs with the adsorption of G. zeylanica extract, causes to shift the absorption edge of TiO2 NPs to higher wavelength...

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