TY  - INPR
N2  - In the present research gold and platinum nanoparticles were deposited simultaneously on three different commercial titania photocatalysts (Evonik Aeroxide P25, Aldrich rutile, and Aldrich anatase). For the synthesis of the composites two noble metal reduction methods (in situ and impregnation) and three noble metal deposition routes (i.e., by changing their deposition order, Au/Pt, Pt/Au, and Au-Pt simultaneously) were used. The photocatalytic performances of the nanocomposites were evaluated under UV irradiation, through degradation of oxalic acid and photocatalytic hydrogen production. The best performing photocatalyst was obtained by sequential noble metal deposition (first Au followed by Pt) on Evonik Aeroxide P25. The morphological and structural properties were studied/investigated by using DRS, TEM, HRTEM, EDX, and XRD. The gold and platinum nanoparticles formed clusters in most of the cases. Furthermore, the ecotoxicity of the composites was investigated using Lemna minor growth inhibition tests using static "lake" approach completed by DLS and ROS indirect measurements. The toxic effect of the composites which showed the highest photocatalytic activity did not differ from that of their commercial counterparts, showing that these nanoparticles were eco-friendly. This result shows the great capacity of these materials to be used in the next future in photocatalytic applications.
SN  - 2168-0485
UR  - http://doi.org/10.1021/acssuschemeng.8b02465
Y1  - 2018///
IS  - 10
EP  - 13006
TI  - Mapping the photocatalytic activity and ecotoxicology of Au, Pt/TiO2 composite photocatalysts
VL  - 6
JF  - ACS SUSTAINABLE CHEMISTRY & ENGINEERING
AV  - restricted
ID  - publicatio16944
SP  - 12993
N1  - Institute of Environmental Science and Technology, University of Szeged, Tisza Lajos blvd. 103, Szeged, HU-6720, Hungary            
            Faculty of Chemistry and Chemical Engineering, Babe?-Bolyai University, Arany János str. 11, Cluj-Napoca, RO 400028, Romania            
            Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Béla sqr. 1, Szeged, HU-6720, Hungary            
            Nanostructured Materials and Bio-Nano-Interfaces Center, Institute for Interdisciplinary Research on Bio-Nano-Sciences, Babe?-Bolyai University, Treboniu Laurian str. 42, Cluj-Napoca, RO-400271, Romania            
            Faculty of Biology and Geology, Babe?-Bolyai University, Gheorghe Bilascu 44, Cluj-Napoca, RO-400006, Romania            
            Département Surfaces et Interfaces (DSI), IPCMS UMR 7504 CNRS, Université de Strasbourg, 23, rue du L?ss, Strasbourg, France            
            Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babe?-Bolyai University, Cluj-Napoca, 400271, Romania            
            Faculty of Physics, Babe?-Bolyai University, Mihail Kogalniceanu str. 1, Cluj-Napoca, RO-400084, Romania            
            Cited By :1            
            Export Date: 24 September 2019            
            Correspondence Address: Baia, L.; Nanostructured Materials and Bio-Nano-Interfaces Center, Institute for Interdisciplinary Research on Bio-Nano-Sciences, Babe?-Bolyai University, Treboniu Laurian str. 42, Romania; email: lucian.baia@phys.ubbcluj.ro            
            Funding details: EFOP-3.6.2-16-2017-00010, PD 125311            
            Funding text 1: B.H. acknowledges the funding received from ?Bursa de Performanta? ? ?tiinti? fic?? provided by the Babes?? Bolyai University and the ?Ma? ton Áron Tehetse? gondozó Program? by the Balassi Institute. L.B. would like to acknowledge the financial support provided by STAR-UBB Advanced Fellowship. G.K. acknowledges the financial support by National Research, Development and Innovation NKFI PD 125311. All of the authors express their gratitude towards the GINOP-2.3.2-15-2016-00013 and PN?III-P1-1.1-TE-2016-1588 projects for financially supporting this research. The research is also part of the ?RING 2017?, EFOP-3.6.2-16-2017-00010 project, funded by the European Union and the Government of Hungary.
A1  -  Hampel Boglárka
A1  -  Kovács Gábor
A1  -  Czekes Zsolt
A1  -  Hernádi Klára
A1  -  Danciu Virginia
A1  -  Ersen Ovidiu
A1  -  Girleanu Maria
A1  -  Focsan Monica
A1  -  Baia Lucian
A1  -  Pap Zsolt
ER  -