2024年5月28日 · Herein, the high-loading and well-dispersive Pt clusters on graphitic carbon-supported CeO 2 with abundant oxygen vacancies (Pt AC /CeO 2 -O V @GC) were successfully fabricated by a molten-salt electrochemical-assisted method.

2024年4月3日 · Oxygen vacancy (OV) engineering has been widely applied in different types of metal oxide-based photocatalytic reactions. Our study has shown that the redistributed OVs resulting from voids in CeO 2 rods lead to significant differences in the band structure in space.

Strong anchoring of small Ni nanoparticles on defective CeO x surface facilitates charge transfer and oxygen spillover. A significantly improved catalytic activity in CO 2 methanation is observed due to the enhanced Ni-CeO x interaction.

2024年6月14日 · Here we report a defect-engineered Fe 2 O 3 –CeO 2 heterojunction with rich oxygen vacancies (Fe 2 O 3 @CeO 2 –O V), exhibiting ultralow overpotential of 172 mV at 10 mA cm −2 and 317 mV at 1000 mA cm −2, respectively, alongside superior stability and durability.

2023年9月15日 · Hollow O v -CeO 2 /CdS photocatalyst with atomic-level intimate interface has been synthesized via a defect-induced strategy and exhibits a high hydrogen production rate ∼12.6 mmol·g −1 ·h −1. 1. Introduction.

2024年6月12日 · Herein, the high-loading and well-dispersive Pt clusters on graphitic carbon-supported CeO 2 with abundant oxygen vacancies (Pt AC /CeO 2 -O V @GC) were successfully fabricated by a molten-salt electrochemical-assisted method.

2025年3月3日 · Tunable electronic properties of supported Cu/CeO2 catalysts are critical for improving the active site activity in catalysis. In this contribution, we propose a surface engineering protocol that utilizes unique ascorbic acid (AA) properties to generate surface defects and modify the electronic properties of Cu–Ce catalysts. This approach relies on forming abundant (Ce3+-Ov) defective sites ...

2016年8月24日 · Carbon (C), nitrogen (N), phosphorus (P), sulphur (S), lanthanum (La) and praseodymium (Pr) doped in CeO 2 and CeO 2 containing oxygen vacancies (Ov) were considered. Our spin-polarized...

2024年11月1日 · The oxygen vacancy (OV) is found to be pivotal for the HCO performance of the different CeO 2 catalysts regardless of their morphology or exposed facet. A linear correlation is discerned between the rate of catalytic decomposition of dissolved ozone (O 3) and the density of Frenkel-type OV.

2025年2月5日 · We explore the impact of point defects, including oxygen vacancies (Ov), cerium interstitials (Ce-int), and hydroxyl groups (Hy), on the electronic and optical properties of bulk CeO2 using many-body Green's function theory (GW method and Bethe-Salpeter equation).

2024年11月27日 · Rare-metal Ce-based SACs consisting of single-atomic Ce sites and CeO2 nanoparticles are constructed by facile gas-phase migration strategy. Moreover, experimental and theoretical analysis demonstrat...

2024年12月10日 · The generation of a large number of interfacial oxygen vacancies with Cu-O V -Ce (O V represents an oxygen vacancy site) structures prolongs the O−O bond of H 2 O 2, promotes the rupture of the peroxide bond of H 2 O 2, and thereby promotes the activation of H 2 O 2 on the surface of the catalyst.

2024年9月18日 · Herein, a novel electrocatalyst comprising highly dispersed Cu nanoclusters (Cu NCs) supported on oxygen vacancy (O V)-rich CeO 2 on carbon paper (Cu NCs –CeO 2 /CP) with plentiful interfacial Cu + –O–Ce 3+ –O V sites is constructed via a facile electrodeposition method.

The peaks are shifted to higher binding energies in the P25/CeO2–3 compared to CeO 2 and P25, ... Defect-induced atomic-level intimate interface of a hollow Ov-CeO 2 /CdS photocatalyst with a Z-scheme to boost hydrogen evolution. J. Colloid Interface Sci., 646 (2023), pp. 209-218.

2025年2月8日 · We explore the impact of point defects, including oxygen vacancies (Ov), cerium interstitials (Ce-int), and hydroxyl groups (Hy), on the electronic and optical properties of bulk CeO2 using...

In this work, surficial-enriched ruthenium (Ru) catalyst was developed on octahedral cerium dioxide (CeO 2) through a combination of hydrothermal synthesis and ultrafast (60 s) wet impregnation approaches, utilizing H 2 O 2 as a facilitator (Ru/CeO 2 –H 2 O 2).

2019年12月15日 · The electron localization on Ce(III) in mono-dopant cases induces higher Ov formation energies than in bi-dopant cases. By trivalent doping in the CeO 2 (111) surface, the electronic and geometric factors affecting Ov formation are decomposed.

Three morphology-controlled CeO2, namely nanorods (NRs), nanocubes (NCs), and nanopolyhedra (NPs), with different mainly exposed crystal facets of (110), (100), and (111), respectively, have been...

2024年1月3日 · Here, we comprehensively investigated an iron–cerium–aluminum oxide (Fe 1 /CeO 2 –Al 2 O 3) prepared with a co-precipitation method. Structural identification confirmed that Fe sites are atomically dispersed, bonding with four O atoms in the first coordination shell and with two Ce atoms in the second shell on average.

2023年9月7日 · Through a combination of in situ techniques and resonant inelastic X-ray scattering (RIXS), here, we discovered that upon formation of the VO, the remaining Ce4+-O2- bond energy increases by at...