Self-Enhanced Catalytic Activity of Pt/TiO₂ via Electronic Metal–Support Interaction

Rutile TiO2-Supported Pt Nanoparticle Catalysts for the Low-Temperature Oxidation of Ethane to Ethanol

“…The involvement of oxygen radicals and alkyl radical species in the oxidation of CH 4 and C 2 H 6 has been reported. 7,14,27,28,31,53 The contribution of radicals to the present system was verified by electron spin resonance (ESR) spectroscopy with a spin-trapping technique. A spin-trapping agent (5,5-dimethyl-1-pyrroline N-oxide: DMPO) was added to the reaction system, and the reaction was tested at 50 °C to capture the in situ-generated radicals.…”

“…In the literature, the Pt δ+ species on TiO 2 have been reported to be highly active toward the WGS reaction (CO + H 2 O → H 2 + CO 2 ). 53 H 2 can be oxidized to H 2 O 2 over Pt nanoparticles using feed O 2 . 51 In the present system, the Pt nanoparticle with the abundant surface Pt δ+ species is formed during the reaction, where the WGS reaction can occur on the Pt δ+ site and a subsequent H 2 O 2 formation reaction on the Pt 0 site.…”

Cancer cell membrane-camouflaged CuPt nanoalloy boosts chemotherapy of cisplatin prodrug to enhance anticancer effect and reverse cisplatin resistance of tumor

“…However, the acquired drug resistance and systemic toxicity of CDDP severely compromise its anticancer effect, resulting in a poor prognosis [ [4] , [5] , [6] ]. Compared to CDDP, the platinum(IV) (Pt (IV), (c,c,t-[Pt(NH 3 ) 2 Cl 2 (OOCCH 2 CH 2 COOH) 2 )) prodrug with two axial ligands can specifically respond to tumor cells, which is converted into cytotoxic CDDP by excessive glutathione (GSH) in tumor cells, contributing to chemotherapy [ [7] , [8] , [9] ]. Despite its advantages, Pt (IV) prodrug still exhibits weak anticancer activity in suppressing tumor growth, limiting its clinical application [ 10 ].…”

Insights into the enhanced hydrogen adsorption on M/La2O3 (M = Ni, Co, Fe)

“…La 2 O 3 is commonly considered a non-reducible oxide, whose surface chemistry is less explored compared to that of reducible oxides, such as CeO 2 and TiO 2 . However, in recent years, people have realized that the metal-oxide interface formed between metal nanoparticles and oxide supports could produce large electronic perturbations and increase the reducibility of the oxide supports by forming the oxygen vacancies at the interfacial sites, [14][15][16][17] in turn, enabling the hardly reducible oxides to become reactive. 18,19 Meitu and co-workers found that the oxygen vacancy formation energy on Fe-doped La 2 O 3 (011) surface is decreased to 3.64 eV, much less than that on pure La 2 O 3 (011) with the value of 5.86 eV.…”