TiO2 nanotube arrays supported Pd nanoparticles for ethanol electrooxidation in alkaline media

Pd-Au/C catalysts with different alloying degrees for ethanol oxidation in alkaline media

“…In addition, the incorporation of Au, which could cause less-exposed Pd surface atoms, may also lead to the small cathodic peak presented by Pd-Au/C catalyst. Since the coulombic charge consumed during the reduction of Pd oxide to Pd is proportional to the electrochemically active surface area (EASA) of Pd on the catalyst, the coulombic charge, which can be determined by integrating the well-defined peak, could be used to estimate the EASA of Pd and evaluate the utilization of Pd on catalyst [25,26]. The EASAs based on the coulombic charge are 1.19, 0.688 and 0.850 mC cm À2 for Pd/C, Pd-Au/C-H and Pd-Au/C-L, respectively.…”

Enhancement of Photoelectrocatalysis Efficiency by Using Nanostructured Electrodes

“…TiO 2 NTs and Ag/TiO 2 NTs showed a similar maximum photocurrent density λ (i max 330 nm), but Ag/TiO 2 NTs displayed much more intensive photocurrent response, which can be explained by the Schottky barrier formation separating the charge carriers more efficiently. Zhang and colleagues [156] prepared N-doped TiO 2 NTs and loaded Ag nanoparticles on the TiO 2 surface by In the paper of Qin and colleagues [159] Pd particles were deposited onto the TiO 2 NTs electrode by a pulse electrodeposition technique in PdCl 2 (2 g L −1 ) electrolyte solution (pH 1.5).…”

Artificial Photosynthesis of Alcohols by Multi‐Functionalized Semiconductor Photocathodes

“…[8][9][10][11][12][13][14] As the most frequently studied photocatalysts, titaniumd ioxide (TiO 2 )a nd zinc oxide (ZnO) have many advantages such as abundance, low-cost,l ow-toxicity,a nd chemical stability. [24][25][26][27][28][29] The electrochemical reduction reaps the benefits of utilizingw ater as reaction medium that facilitates proton and electron transfer. There have been many studies on looking for suitable metal co-catalysts,s uch as Pt, Rh, Au, Ag, Cu, and Pd coatedo nT iO 2 ,t oi mprovet he catalytic properties of TiO 2 for CO 2 reduction, nonetheless, these reported strategies are very restricted to enhance the catalytic abilities of semiconductors.…”

“…There have been many studies on looking for suitable metal co-catalysts,s uch as Pt, Rh, Au, Ag, Cu, and Pd coatedo nT iO 2 ,t oi mprovet he catalytic properties of TiO 2 for CO 2 reduction, nonetheless, these reported strategies are very restricted to enhance the catalytic abilities of semiconductors. [24][25][26][27][28][29] The electrochemical reduction reaps the benefits of utilizingw ater as reaction medium that facilitates proton and electron transfer. [30,31] However,t he electrodes commonly suffer from high overpotential as well as large H 2 release and low selectivity forc arbon-based molecules.…”