Palladium membrane on TiO2 nanotube arrays-covered titanium surface by combination of photocatalytic deposition and modified electroless plating processes and its hydrogen permeability

Palladium-Based Nanomaterials: Synthesis and Electrochemical Applications

“…Photochemical deposition offers a simple and cost-effective method for the creation of ultrathin films and nanoparticles. − TiO 2 -nanotube-supported PdAu nanoparticles were successfully prepared by Tian et al via photoassisted deposition. A pregrown TiO 2 naotube plate was immersed in a solution that contained the appropriate amounts of 0.04 M Pd and Au precursors [Pd­(NO 3 ) 2 and AuCl 3 ], as well as 5 mL of 50% (v/v) methanol.…”

Structural and Optical Interplay of Palladium-Modified TiO2 Nanoheterostructure

“…It is well-documented that the existence of a Schottky potential barrier at the interface between Pd NPs (metal) and TiO 2 NTs (semiconductor) facilitates electron transfer from the conduction band of TiO 2 to Pd, as the electron affinity of anatase (∼4.2 eV) is lower than the work function of Pd (∼5.12 eV), which can effectively reduce electron–hole recombination so that an enhanced photoactivity can be achieved. , Although many works have reported the achievement of superior photocatalytic performance of TiO 2 NTs upon Pd decoration, ,− to the best of our knowledge, a comprehensive understanding of the synergetic effect between noble metals and TiO 2 is lacking. Thus, the objective of this work was to provide insights into the electronic structure and its interplay with the optical properties of Pd NP-coated TiO 2 NTs.…”

Turning Waste to Resource: An Example of Dehydrogenation Catalyst Cr/ZrO2 Derived from Photoreduction Treatment of Chromium-Containing Wastewater with ZrO2

“…Photoreduction deposition has been developed as an efficient method to prepare supported catalyst. − Photoreduction is able to reduce Cr­(VI) anions into Cr­(III) cations and turn it into chromium-contained products without extra energy demand. Titanium dioxide and some other semiconductors have been tested as the photocatalyst for the reduction of metallic ions including Cr­(VI) in water by light. − First, the aqueous Cr­(VI) species were transformed into Cr­(III) cation, then Cr­(III) was precipitated in the form of Cr­(OH) 3 by introducing the basic reactant .…”