@article{305c1bc7e05846c4bfeb0b9d45c50ec8,
title = " Fabrication of Pd-TiO 2 nanotube photoactive junctions via Atomic Layer Deposition for persistent pesticide pollutants degradation ",
abstract = " The design of nano-structured heterogeneous catalytic junctions with high interface to volume ratio and discrete surface distribution is critical to promote the photoelectron activity in the catalytic degradation of organic pollutants. In this work, photocatalytic palladium‑titanium dioxide nano-junctions were fabricated via Atomic Layer Deposition (ALD) of palladium nanoparticles over the surface of titanium dioxide nanotubes. The Pd catalytic interface and resulting active site density was tailored by varying the nanoparticle growth and coalescence via ALD, leading to Pd-TiO 2 junctions with distinctive morphological aspects and interface properties. The visible light response of the Pd-TiO 2 junctions was attributed to the Surface Plasmon Resonance effect and correlated to the variation of the catalyst morphology tuned by ALD. Uniform, discrete distribution of Pd nanoparticles with diameter lower than 5 nm led to high catalytic interface to deposited volume ratio. The nano-engineered Pd-TiO 2 junctions showed enhanced photocatalytic activity towards the degradation of methylene blue selected as a model contaminant and 2,4 D, with a kinetic constant 4.5 higher than as-annealed anatase TiO 2 nanotubes. The design of well-defined catalytic junctions obtainable by a scalable, accurate deposition technique such as ALD represents a promising route to develop cutting-edge photoactive devices with high performance and minimum noble-metal loading.",
keywords = "Atomic Layer Deposition, Catalytic junctions, Nanointerfaces, Photocatalysis, Surface plasmon resonance",
author = "Andrea Merenda and Matthieu Weber and Mikhael Bechelany and Allioux, {Francois Marie} and Lachlan Hyde and Lingxue Kong and Dum{\'e}e, {Ludovic F.}",
note = "Funding Information: This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). Mr. Andrea Merenda would like to acknowledge the Australian Research Council (ARC) for funding the Linkage LP140100374 project and Dr. Ludovic Dum{\'e}e also acknowledges the ARC for his DECRA DE180100130 fellowship. Mr. Andrea Merenda and Dr. Ludovic Dum{\'e}e would also like to acknowledge ARC Research Hub for Energy-efficient Separation IH170100009 . Mr. Andrea Merenda would also like to acknowledge the French Embassy of Australia for financing the 2017 Scientific Mobilisation Program Travel Award. The authors also acknowledge the Australian Synchrotron, SAXS/WAXS beamline, for funding the proposal M13027, 2018/1 and Beamline Scientists Dr. Adrian Hawley and Dr. Stephen Mudie for technical support. The authors would like to acknowledge Prof. Peter Hodgson for mentoring and support to the study. The authors also thank Dr. Bertrand Rebi{\`e}re (IEM, France) and Dr. Didier Cot for SEM-EDX measurements. Mr. Andrea Merenda would like to acknowledge Dr. De Ming Zhu for XPS technical support. Deakin University's Advanced Characterisation Facility is acknowledged for use of the Zeiss Supra 55VP FEG SEM and assistance from Dr. Andrew Sullivan. Funding Information: This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). Mr. Andrea Merenda would like to acknowledge the Australian Research Council (ARC) for funding the Linkage LP140100374 project and Dr. Ludovic Dum{\'e}e also acknowledges the ARC for his DECRA DE180100130 fellowship. Mr. Andrea Merenda and Dr. Ludovic Dum{\'e}e would also like to acknowledge ARC Research Hub for Energy-efficient Separation IH170100009. Mr. Andrea Merenda would also like to acknowledge the French Embassy of Australia for financing the 2017 Scientific Mobilisation Program Travel Award. The authors also acknowledge the Australian Synchrotron, SAXS/WAXS beamline, for funding the proposal M13027, 2018/1 and Beamline Scientists Dr. Adrian Hawley and Dr. Stephen Mudie for technical support. The authors would like to acknowledge Prof. Peter Hodgson for mentoring and support to the study. The authors also thank Dr. Bertrand Rebi{\`e}re (IEM, France) and Dr. Didier Cot for SEM-EDX measurements. Mr. Andrea Merenda would like to acknowledge Dr. De Ming Zhu for XPS technical support. Deakin University's Advanced Characterisation Facility is acknowledged for use of the Zeiss Supra 55VP FEG SEM and assistance from Dr. Andrew Sullivan. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",
year = "2019",
month = jul,
day = "31",
doi = "10.1016/j.apsusc.2019.03.285",
language = "British English",
volume = "483",
pages = "219--230",
journal = "Applied Surface Science",
issn = "0169-4332",
publisher = "Elsevier B.V.",
}