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- 저자 : Amine Achour (검색결과 1 건)
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Naimeh Naseri,Ştefan Ţălu,Slawomir Kulesza,Shervin Qarechalloo,Amine Achour,Miroslaw Bramowicz,Atefeh Ghaderi,Shahram Solaymani 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-
To overcome recent energy and environment challenges, developing efficient and low cost photocatalystsare unavoidable. In this context, design of semiconductor nanostructures modified with earth abundantco-catalysts for water splitting reactions requires well engineered and controlled process to optimizesurface interface and maximize nanocomposite system efficiency. Here, TiO2 nanotube were synthesizedelectrochemically and decorated with cobalt based nanostructure co-catalyst for water oxidationreaction using low cost and scalable electro-deposition approach. By changing deposition parametersand complete studying on samples surface morphology and related statistical analysis data, correlationbetween all morphological parameters and photoelectrochamical activity of correspondence photo-anode was illustrated for thefirst time. Based on SEM analysis and surface analysis data as well ascatalytic performance investigation, nanotubes decorated with Co nanoparticles at 0.1 mA cm 2deposited for 2000 s presented the best performance with most isotropic surface. Results suggestedthat by tuning deposition parameters surface structural parameters like fractal dimension, cornerfrequency, roughness and feature shape and size can be engineered completely. Moreover, X-raydiffraction data along with Rietveld method revealed coexistence of anatase, rutile and Ti2O3 phases inthe photoanode while poor crystallinity of grown cobalt based nanostructures was confirmed.
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