High conductivity of novel Ti0.9Ir0.1O2 support for Pt as a promising catalyst for low-temperature fuel cell applications

Rutile Ti0.9Ir0.1O2‐Supported Low Pt Loading: An Efficient Electrocatalyst for Ethanol Electrochemical Oxidation in Acidic Media

“…[ 30,31 ] The conductivity of the rutile TiO 2 phase was higher than that of the anatase TiO 2 phase due to the difference in the bandgap [ 32,33 ] that was also considered as the reason for the high electrical conductivity of the as‐prepared rutile Ti 0.9 Ir 0.1 O 2 nanosupport versus that anatase Ti 0.9 Ir 0.1 O 2 nanoparticles (1.6 × 10 −2 S cm −1 ). [ 21 ]…”

“…[ 4,14,16,17 ] In addition to the complicated multistep preparation, the low electrical conductivity of the rutile TiO 2 nanostructures is a primary challenge for fuel cells that could be solved by the incorporation of transition metals into TiO 2 lattice. [ 18–21 ] Iridium is the platinum‐group metals that show high conductivity and similar properties to Pt. [ 22 ] In addition, iridium has a high affinity for oxygenated species at low overpotential that facilitate the oxidation of CO and other carbonaceous species at the Pt active sites during the alcohol oxidation.…”

Enhanced performance of methanol oxidation reaction via green synthesis of platinum electro‐catalyst from sugar cane bagasse

“…To highlight the distinction, we used mass activities (mA mg ‐1 ) and specific activity (mA cm ‐2 ) as illustrated in Figure 13 to give a standard evaluation by normalizing the current for the Pt mass loading and the ECSA, respectively as to make a comparison for all. It demonstrate that the biosynthesized Pt NPs is performed, comparable and exhibit superior electrocatalytic than that of the Pt‐based catalyst prepared by other conventional techniques, including wet‐chemical reduction with various morphologies, including a bimetallic PtAg, 70 PtRu icosahedra, 71 and Pt.ZSM‐5‐C 72 ; and as well as other conventional techniques, such as laser beam irradiation of bimetallic PtPd 73 and PtAg nanourchains, 74 hydrothermal method of Pt/Ti 0.9 Ir 0.1 O 2 , 75 layer‐by‐layer (LbL) deposition approach of a bimetallic Pt ‐ MoS 2 , 76 wet chemical etching technique of 3D PtAu nanoframe, 77 and electrodeposition techniques of Pt/MCM ‐ 41/C 78 and Pt/GO ‐ ZSM ‐ 5 79 . Thus, CH 3 OH in contact with Pt NPs synthesized using SC bagasse extract, demonstrated a superior electron transport efficiency during MOR.…”

Synthesis and characterization of Ti0.9Ir0.1O2-activated carbon composite as a promising support for catalysts in electrochemical energy conversion

“…Therefore, designing robust support is necessary for the next-generation development of renewable and sustainable energy-related conversion technologies. Recently, our group successfully fabricated Ir-doped TiO 2 material via a green hydrothermal method that served as efficient catalyst support for Pt nanoparticles (NPs) for the alcohol electro-oxidation process [16,17]. The Pt NPs/Irdoped TiO 2 catalyst exhibited high CO-tolerance and great electrochemical durability compared to the commercially available C-supported Pt (NPs) catalyst, which was attributable to the synergistic effects and SMSI between Ir-doped TiO 2 and Pt NPs.…”