Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Photocatalytic initiation of electroless deposition
AU - Bromley, Michael A.
AU - Boxall, Colin
AU - Galea, Sarah
AU - Goodall, Philip S.
AU - Woodbury, Simon
PY - 2010/12/15
Y1 - 2010/12/15
N2 - We report a one-step photocatalytically initiated electroless deposition (PIED) process that allows for the photogeneration of robust, coherent, conducting metal layers on semiconductor-sensitised insulator surfaces. The PIED process involves two steps, performed simultaneously in the same metal precursor solution:(i) Metal nanoparticles are formed at the surface of the semiconductor by photocatalytic reduction of an appropriate metal precursor.(ii) The nanoparticles then serve as nucleation centres for an autocatalytic electroless deposition process, growing and coalescing to form a continuous metal layer.Layers of various metals including Ag and Pd have been generated by PIED on mesoporous TiO2 (m-TiO2) coated quartz glass slides and PVDF membranes. Deposition occurs only onto areas of the substrate both sensitised with TiO2 and irradiated with ultra-band gap energy light. The morphology of the resultant layer is dependent upon the nucleation density occurring during the primary photocatalytic stage of PIED. PIED provides a cheaper, environmentally cleaner and more controllable option than traditional techniques of plating onto dielectric surfaces. (C) 2010 Elsevier B.V. All rights reserved.
AB - We report a one-step photocatalytically initiated electroless deposition (PIED) process that allows for the photogeneration of robust, coherent, conducting metal layers on semiconductor-sensitised insulator surfaces. The PIED process involves two steps, performed simultaneously in the same metal precursor solution:(i) Metal nanoparticles are formed at the surface of the semiconductor by photocatalytic reduction of an appropriate metal precursor.(ii) The nanoparticles then serve as nucleation centres for an autocatalytic electroless deposition process, growing and coalescing to form a continuous metal layer.Layers of various metals including Ag and Pd have been generated by PIED on mesoporous TiO2 (m-TiO2) coated quartz glass slides and PVDF membranes. Deposition occurs only onto areas of the substrate both sensitised with TiO2 and irradiated with ultra-band gap energy light. The morphology of the resultant layer is dependent upon the nucleation density occurring during the primary photocatalytic stage of PIED. PIED provides a cheaper, environmentally cleaner and more controllable option than traditional techniques of plating onto dielectric surfaces. (C) 2010 Elsevier B.V. All rights reserved.
KW - Photocatalysis
KW - Electroless deposition
KW - Titanium dioxide
KW - Quartz crystal microbalance
KW - PALLADIUM MEMBRANES
KW - TIO2 FILMS
KW - COPPER
KW - WATER
KW - PD
U2 - 10.1016/j.jphotochem.2010.07.029
DO - 10.1016/j.jphotochem.2010.07.029
M3 - Journal article
VL - 216
SP - 228
EP - 237
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
SN - 1010-6030
IS - 2-3
ER -