Structure Of CeO2 Research Articles

Facile Design of Bi2S3‐Doped CeO2/Dihydroxybenzoate Composite as Highly Efficient UV‐Shielding Agents

AbstractIn this study, bismuth sulfide (Bi2S3)‐doped cerium oxide (CeO2) was prepared via hydrothermal method, and by depositing ethyl 3,4‐dihydroxybenzoate (EDHB) on the surface of Bi2S3/CeO2 (Bi2S3/CeO2/EDHB and BCE). The samples were characterized by FTIR, XRD, TEM, and UV–vis absorption spectrum means. According to the characterizations, Bi2S3 was successfully incorporated into the CeO2 structure (Bi2S3/CeO2), and the prepared BCE/PVC composite films display excellent UV‐shielding property. Moreover, the result of thermogravimetric analysis (TGA) tests indicated that BCE also was barely catalytic thermal decomposition of PVC matrix. This work not only paves an attractive way for the design of the CeO2‐based UV‐shielding agent, but also provides valuable insights into the inspiration to construct high‐performance UV‐shielding composites.

Antibacterial mechanism of water-soluble CeO2 nanoflowers and its product design in antibacterial application

Antibacterial surface coatings have attracted growing attention in the textile industry. In this study, water-soluble CeO2 nanoflowers were synthesized by a modified critical micelle antisolvent method, displaying the potential for mass production at a low cost. The structure and electronic states of CeO2 were investigated deeply. Moreover, the antibacterial mechanism of CeO2 was studied in depth. The results revealed that CeO2 nanoflowers with abundant oxygen vacancies can adsorb O2 and produce amounts of reactive oxygen species (ROS) by the electron transfer of Ce4+ and Ce3+. These compounds can destroy cell walls, resulting in the leakage of bacterial nucleic acids and proteins, leading to bacterial death. The CeO2 nanoflowers exhibited broad-spectrum antimicrobial properties and biological safety. The antibacterial cotton fabric was prepared by the impregnation method. Considering the material impregnation amounts and impregnation time, a new washing machine was designed to prepare the antibacterial fabric. In this work, fabrics were modified using CeO2 nanoflowers with a simple method suitable for mass production, showing great application potential in antimicrobial cotton fabric. In addition, in order to further expand the application field of CeO2 nanoflowers, antibacterial elevator button patches, antibacterial coatings and other products were designed.

Facile synthesis of Tl, Pb, and Bi doped CeO2 nanoparticles and the evaluation of their in-vitro cytotoxicity and photocatalytic performance

Our work attempted a green route for provisioning of thallium, lead, and bismuth into cerium oxide nanoparticles (Tl, Pb, and Bi–CeO2 NP) via the application of Alhagi maurorum. We configured the physicochemical attributes of procured NPs via PXRD, Raman, FESEM/PSA/EDX, and UV–Vis/DRS assessments. Attendance of doped metals in structure of CeO2 was confirmed by outcomes of PXRD and EDX analyses. Next to the porous morphology, FESEM images also demonstrated the induced alterations in particle size after the doping of different metals. We also tested the photocatalytic function of synthesized NP on Methylene blue (MB) dye on UV light, which displayed the superior degradation functionality of Tl–CeO2 NP. The toxicity function of synthesized pure and Tl, Pb, and Bi–CeO2 NP on breast cancer cell (MDA-MB-231) and breast normal cell (MCF-10 A) lines was considered through the results of MTT trial. The outcomes of synthesized NPs displayed no signs of any cytotoxic effects against MCF-10 A and MDA-MB-231 cells, which signified the creation of non-toxic nanoparticles by the introduced doping process. Therefore, we suggest the applicability of our product in drug delivery systems and also industrial implementations similar to dye photodegradation and annihilation of pollution.

Mn/CeO2 contains enriched surface lewis acid sites and pore structures accelerated catalytic oxidation of propane at low temperature

The development of highly efficient non-precious metal catalysts for the low-temperature catalytic oxidation of volatile organic compounds (VOCs) is a critical imperative in VOCs control. In this study, a series of highly active CeMnOx catalysts with Mn-doped CeO2 were investigated. The catalysts (WHSV=30,000 mL g−1 h−1) exhibited the highest catalytic propane oxidation activity (T90 = 230 °C) and excellent stability over 600 h, When the Mn:Ce ratio was 2.5. The introduction of Mn doping resulted in modifications to the pore structure of CeO2, leading to an increase in specific surface area and enhanced gas transfer kinetics. Additionally, it induced surface electronic defects and elevated the concentration of acidic sites, thereby facilitating the adsorption and activation of propane. Consequently, these improvements contributed to an enhanced catalytic performance of the catalyst. The in-situ DRIFTS infrared spectra revealed that Mn doping reduced the activation energy of the reaction and facilitated the conversion of acetone groups as well as decomposition of carboxylic acid groups.

Enhancing low-temperature CO2 methanation performance by selectively covering Ni with CeO2 to form Ni-O-Ce interface active sites

The methanation of CO2 is crucial for resource utilization, however, achieving excellent CO2 methanation performance with Ni-based catalysts at low temperatures remains highly challenging. In this study, a high-performance 10Ni-0.1Ce/Al catalyst was synthesized using a simple and efficient one-pot combustion method. Unlike other catalysts with the same components, this catalyst exhibits a unique feature where a small amount of the CeO2 promoter is dispersed on the support, while the majority selectively binds to and coats the Ni nanoparticles. This distinctive structure allows it to achieve approximately 80 % CO2 conversion and 99.9 % CH4 selectivity under conditions of 260 °C, 0.1 MPa, and a GHSV of 48,000 mL·g−1·h−1. The high catalytic performance is attributed to the unique structure of Ni nanoparticles and CeO2, which promotes the formation of numerous Ni-O-Ce interface active sites. These Ni-O-Ce interfaces enhance the reducibility and increase the content of weak basic sites in the catalyst. The combination of in-situ DRIFTS and TPSR reveals that the decomposition of bridged HCOO– to *CO is the rate-determining step. The presence of Ni-O-Ce interface active sites in the 10Ni-0.1Ce/Al catalyst facilitates the generation of abundant bridged HCOO– intermediates with higher activity than the 10Ni/Al catalyst, leading to a substantial enhancement in catalytic performance.

Sealing of cerium oxide coating primers on anodized AA2024-T3 alloy by boiling in Lourier buffers

Although their exceptional re-passivation ability, Al-alloys are susceptible to corrosion due to the amphoteric nature of the alumina passivation films. This issue is exacerbated by the disruption of these films by intermetallics on the surfaces of highly doped ones, like AA2024-T3 aircraft alloy. The combination of anodized aluminium oxide (AAO) and cerium conversion coatings (CeCC) shows promise as a coating primer. However, the defective structures of CeO2 and Al2O3 require additional sealing. This research proposes sealing the CeCC/AAO layer by boiling it for 10 minutes in two relatively neutral Lourier buffers, adjusted to pH 7.75, and in a mixture of them. The samples underwent a series of analyses to compare the impact of the sealing procedure on surface topology, properties (e.g., colour and wettability on two samples from each set), and corrosion protective ability. It was assessed after 24 hours of exposure to 3.5 % NaCl model corrosive medium on six samples from each set. The assessments included electrochemical impedance spectroscopy (EIS) and potentiodynamic scanning (PDS) techniques. The results indicate that the borate buffer improves the corrosion protection of the coating primers more effectively than the phosphate and mixed ones.

Sonochemical synthesis of S-scheme CuO/CeO2 heterojunction for enhanced photocatalytic degradation of rhodamine B dye under solar radiations

CeO2 is renowned photocatalyst with 2.8 eV band gap energy and exceptional optical features. However, the slow charge transportation and the fast recombination of the electron-hole pair hindered the photocatalytic efficiency. In this pioneering research, S-scheme CuO/CeO2 heterojunctions were engineered sonochemically with rational compositions of CeO2 and CuO nanoparticles for enhanced the photocatalytic efficiency of CeO2 in destructing rhodamine B dye under full solar radiations. Diffuse reflectance spectrum [DRS], photoluminescence [PL], high resolution transmission electron microscope [HRTEM], selected area electron diffraction [SAED], N2-adsorption-desorption isotherm, X-ray photoelectron spectroscopy [XPS] and X-ray diffraction [XRD] investigated the physicochemical properties of CuO/CeO2 heterojunction. Monoclinic CuO nanoparticles of 8 nm size are facilely incorporated in cubic CeO2 crystallites of 27.3 nm through substitution of Ce4+ by Cu2+ ions which ascribed to smaller ionic radii of Cu2+ compared with Ce4+ and Ce3+ ions. Homogeneous distribution of CuO nanoparticles on CeO2 surface was further investigated by SEM and TEM analysis. HRTEM, XRD, SAED and XPS analysis recorded the co-existence of crystalline peaks of CeO2 and CuO implying the successful construction of CuO/CeO2 heterojunction. The depression in the surface area of CeO2 from 91.4 to 83.6 m2/g with incorporating 5 wt % of CuO revealed the deposition of CuO on CeO2 surface. XPS analysis implied the existence of Ce3+ and oxygen vacancies that provide more adsorption sites for oxygen, which are beneficial for enhancing the catalytic performance of catalysts. CuO nanoparticles with 1.3 eV band energy enhanced the visible light absorbability of the heterojunctions in deep visible region for broading the photocatalytic response. Significant reduction in photoluminescence signals intensity by 60 % with incorporation 5 wt % of CuO revealed the favorable reduction in the rate of electron-hole recombination. In particular, CeCu5 containing 5 wt % CuO expelled 96 % of RhB dye within 6-h under solar simulator compared with 13 % removal on pristine CeO2 and CuO surface. Hot radicals and positive holes degraded RhB dye molecules on the heterojunction surface as elucidated from scavenger experiments and PL analysis of terephthalic acid. The exceptional removal of RhB dye under solar radiation was ascribed to the alignment in the band structure of CeO2 and CuO nanoparticles and the successful production of an efficient S-scheme heterojunction with strong redox potential and better electron transportation and separation.

Wettability, electronic structure and optical properties of intrinsic, doped, and oxygen-deficient CeO2: A study using DFT+U and DFT+U-D3

Using density functional theory plus U (DFT + U) and considering dispersion correction with the DFT + U-D3 method, the wettability, electronic structure, and optical properties of MO2 (M = Ce, Ce0.75La0.25, Ce0.75Zr0.25, Ce0.75Y0.25) and CeO1.75 were investigated. The results showed that dispersion correction had a significant impact on the wetting behavior. Through comparison, we identified a calculation method for the water contact angle (WCA) that closely matched experimental values. All structures exhibited hydrophilic properties, but Y doping significantly increased the WCA. La and Y doping transformed CeO2 from semiconductor to exhibits metallic characteristics. Oxygen vacancies localized excess electrons by Ce, forming Ce-f gap states between the conduction and valence bands. Zr doping increased the transparency of CeO2. La doping, Y doping, and oxygen vacancies enhanced the extinction coefficients of CeO2 in infrared light and resulted in higher static refractive indices and static reflectivities.

Enhanced PtRu by CeO2 hollow nanofibers: Hydrogen gas sensing with CO-resistant in fuel cell

The broad flammability range of hydrogen (4–75 %) underscores the critical need for precise and efficient detection methods. Traditional catalytic combustion sensors can detect combustible gases rapidly; however, they have disadvantages such as high operating temperatures, increased power consumption, and dependence on platinum, with vulnerability to CO poisoning. This study introduced a groundbreaking approach that utilizes CeO₂ hollow nanofibers supported by PtRu nanoparticles to sense hydrogen under extreme conditions, including environments with CO concentrations up to 500 ppm. The unique structure of CeO₂, derived from the Pt/Ce3+ redox pair, provides a high density of oxygen vacancies, which enhances hydrogen detection and enables reactions at room temperature. Our sensor can detect hydrogen concentrations ranging from as low as 100 ppm to as high as 50 %, showcasing its wide detection range and superior selectivity. Our findings confirmed the superior performance of the sensor in realizing consistent and rapid detection in a CO-rich atmosphere. This study presented a significant step toward robust wide-range hydrogen detection, paving the way for safer and more sustainable environmental monitoring.

Prediction of nanocomposite properties and process optimization using persistent homology and machine learning

Physical property prediction and synthesis process optimization are key targets in material informatics. In this study, we propose a machine learning approach that utilizes ridge regression to predict the oxygen permeability at fuel cell electrode surfaces and determine the optimal process temperature. These predictions are based on a persistence diagram derived from tomographic images captured using transmission electron microscopy (TEM). Through machine learning analysis of the complex structures present in the Pt/CeO2 nanocomposites, we discovered that l2 regularization considering diverse structural elements is more appropriate than l1 regularization (sparse modeling). Notably, our model successfully captured the activation energy of oxygen permeability, a phenomenon that could not be solely explained by the geometric feature of the Betti numbers, as demonstrated in a previous study. The correspondence between the ridge regression coefficient and persistence diagram revealed the formation process of the local and three-dimensional structures of CeO2 and their contributions to pre-exponential factor and activation energies. This analysis facilitated the determination of the annealing temperature required to achieve the optimal structure and accurately predict the physical properties.

Visualization of oxygen vacancies at CeO x /Y-HZO interface by spectrum imaging method and multivariate analysis

Electron energy loss spectroscopy—spectrum imaging measurements using a scanning transmission electron microscope are carried out to clarify the details of microstructure at the interface of the CeO x -capped Y-HZO film prepared by the chemical solution deposition (CSD) method. We confirmed that by the present CSD the independent capped layer of CeOx successively deposited on Y-HZO. The crystal structure of CeO x film is mainly the cubic CeO2 structure with Ce4+. Chemical state maps are also successfully obtained by the multivariate analysis. We found that Ce3+ and Ce4+ coexist in the interface layer with cubic CeO2 crystal structure containing O vacancy. The results of the quantitative elemental distribution maps of energy dispersive X-ray spectroscopy also supported that O vacancies exist at the interface.

Recent Advances of CeO2-Based Composite Materials for Photocatalytic Applications.

Photocatalysis has the advantages of practical, sustainable and environmental protection, so it plays a significant role in energy transformation and environmental utilization. CeO2 has attracted widespread attention for its unique 4 f electrons, rich defect structures, high oxygen storage capacity and great chemical stability. In this paper, we review the structure of CeO2 and the common methods for the preparation of CeO2-based composites in the first part. In particular, we highlight the co-precipitation method, template method, and sol-gel method methods. Then, in the second part, we introduce the application of CeO2-based composites in photocatalysis, including photocatalytic CO2 reduction, hydrogen production, degradation, selective organic reaction, and photocatalytic nitrogen fixation. In addition, we discuss several modification techniques to improve the photocatalytic performance of CeO2-based composites, such as elemental doping, defect engineering, constructing heterojunction and morphology regulation. Finally, the challenges faced by CeO2-based composites are analyzed and their development prospects are prospected. This review provides a systematic summary of the recent advance of CeO2-based composites in the field of photocatalysis, which can provide useful references for the rational design of efficient CeO2-based composite photocatalysts for sustainable development.

Ceria-Terbium-based electrospun nanofiber catalysts for soot oxidation activity and its kinetics

BackgroundCeria-based materials have an excellent potential to be catalysts for catalytic three-way converters in the automobile industry. Developing Ceria-based nanofiber catalysts can be a significant approach for further exploring the application of these materials in automobile industries. MethodsIn this study, Ag, Cu, or Co doped Ceria–Terbium nanofibers were synthesized using the electrospinning technique. The obtained nanofiber catalysts were characterized using FE-SEM, XRD, FT-Raman Spectroscopy, and BET-BJH analysis and tested for soot oxidation activity and its kinetics. Significant findingsFE-SEM examination reveals that the obtained nanofibers have a diameter ranging from around 100 to 600 nm. CeTbCo nanofibers exhibited a reduced particle size and enhanced pore formation. The XRD investigation revealed that all the nanofibers displayed a face-centered fluorite structure of CeO2. In Raman spectroscopy analysis, CeTbCo nanofibes showed the emergence of a secondary Co3O4 phase. The CeTbCo nanofiber catalyst showed better SBET (specific surface area) (66 m2/g) and average pore size (12.08 nm) and total pore volume (0.223 cc/g)), better soot oxidation activity (T50 = 347 ℃) than other nanofiber catalysts. The CeTbCo nanofiber catalyst exhibited an activation energy of 132 kJ mol−1 and a pre-exponential factor (ln (A)) of 25.63 min−1.

Fabrication of CeO2/CaO nanocomposite as ultraviolet screening agent and its application in sunscreen

In order to improve CeO2 ultraviolet absorption performance and transparency, this paper puts forward that different proportions of calcium oxide are doped during the formation of CeO2. Doping calcium ions with larger ion size and lower valence leads to the formation of oxygen defects by inhibiting the precipitation of oxygen from cerium oxide and keeps the fluorite structure of cerium oxide stable. The effects of CaO doping on the crystal structure, morphology, and optical characteristics of CeO2 were analyzed by XRD, SEM, TEM, TGA, XPS, UV–vis spectrophotometry. The pH of sunscreen, spread ability and some physical as well as chemical evaluations were carried out, while to study its UV protection performance the sunscreen SPF test was performed. The UV–vis results revealed that CeO2/20%CaO showed highly efficient UV absorption capacity. After adding calcium oxide, the catalytic activity of the material is reduced, due to which the generation of free radicals is demoted, and the harm to human body is decreased. After the addition of 3 wt% nanomaterials into sunscreen, the sun protection factor（SPF ）values of pure cerium oxide and CeO2/20%CaO are 1.95 and 2.81, and their sun protection coefficient is increased by 69.39%. Therefore, it is an ideal candidate as a component of ultraviolet screening agent in sunscreens and provides a new idea for the research direction of cerium oxide in anti-ultraviolet applications.

Comparative studies on the structural, optical and electrochemical properties of Gd, Nd and In-doped CeO2 nanostructured thin films

Cerium oxide nanostructured thin films, as well as their variants doped with Gadolinium (Gd), Neodymium (Nd) and Indium (In), were successfully deposited onto both glass and ITO substrates using the spray pyrolysis method. Their structural, morphological, optical, and electrochemical properties were then experimentally studied. X-ray diffraction (XRD) has confirmed the generation of a single-phase polycrystalline cubic fluorite structure of CeO2. The crystallite size and microstrain of the thin films were found to depend on the type of doping element. Red-shift, peak broadening, and asymmetry in the Raman mode (F2g), as well as a red-shifted energy gap, were confirmed through Raman spectroscopy and UV–Vis–NIR analyses. SEM images reveal nanograin formation in all the films, while EDS analysis confirms the presence of the elements. The electrochemical measurements indicate that doping CeO2 with Gd, Nd, and In enhances its electrochemical properties. Furthermore, the doped CeO2 thin films maintain full transparency during the intercalation and deintercalation of Li + ions. Such pivotal findings broaden the potential applications of this oxide, particularly in supercapacitors and electrochromic devices.

Synthesis and characterization of Ag-doped cerium oxide nanoparticles for electromagnetic radiation shielding.

In the current study, CeO2: Ag (0 and 11 mol) nanoparticles (NPs) were synthesized by solution combustion method using Aloevera extract as reducing agent. As-obtained NPs were characterized by standard techniques. Bragg's reflections confirm the formation of a single-phase cubic structure of CeO2:Ag NPs. Crystalline size is calculated using both the W-H plot and Scherrer's equation. Crystallite size found to decrease with increase in the dopant concentration. EDAX pattern confirmed the presence of Ce, O and Ag. Direct energy band calculated using Wood and Tauc's was found to be in the range of 2.9-2.2 eV for 0 and 11 mol, respectively. Fourier transformation infrared spectroscopy (FTIR) analysis confirmed the presence of the functional groups. Total shielding efficiency (SET) will give the best representation of EMI shielding properties. SET values calculated for a wide range of wavelengths are found to be as follows: near infrared (1.65 × 102 dB), mid infrared (9.78 × 101 dB) and far infrared (6.32 × 101 dB), followed by microwave region (MW) (6.46 × 101 dB), ultra-high frequency (UHF) (7.31 × 101 dB), very high frequency (VHF) (8.27 × 101 dB), high frequency (HF) (9.26 × 101 dB), medium frequency (MF) (1.02 × 102 dB), low frequency (LW) (1.12 × 102 dB), very low frequency (VLF) (1.22 × 102 dB), ultra-low frequency (ULF) (1.42 × 102 dB) and extremely low frequency (ELF) (1.52 × 102 dB). SET values of CeO2:Ag NPs are compared with other traditional materials and nanocomposites and found to be potential use in EMI shielding applications.

CeO2 crystal plane engineering to modulate CuO-CeO2 interactions and modify the CO-PROX reaction pathway

Adjustment of the CeO2 exposed planes is an effective tool for modifying the metal-support interaction, which is the basis for the excellent CO preferential oxidation (CO-PROX) performance of CuO/CeO2 catalysts. However, the relationship between the CeO2 exposed planes, CuO-CeO2 interaction and reaction performance is still unclear. Herein, we investigated the effect of interactions on the structure of CuO/CeO2 catalysts and the CO-PROX reaction by modulating the CeO2 exposed planes (CuCe-NC (nanocubes) exposed {100} planes and CuCe-NP (nanoparticles) exposed {111} planes). The results indicate that the {100} plane exhibits greater CuO dispersal capabilities due to electron transfer caused by stronger interactions produces an anchoring effect on CuO. This promotes increased contact between CO and CuO during the reaction, creating more CO adsorption sites and improving low temperature activity. Furthermore, effective electron transfer between CuO and {100} planes during reaction maintains Cu+ stability while widening the temperature window. In-situ spectroscopy and DFT calculations showed that the Cu+–CO bond strength is weakened by the enhanced interaction, which together with the excellent surface structure of CeO2-{100}, favours the direct desorption of CO2. However, forming carbonate on CuCe-NP seems to be preferable. Various CO-PROX reaction pathways are suggested for different exposed crystal planes. This insight into crystal plane effects on CO-PROX may guide the design of high-performance catalysts.

Uncovering proton transportation enabled via the surface and interfacial engineering for ceramic fuel cells

Ultra-wide bandgap semiconductor Ceria oxide attracts tremendous interest because of its high stability and electrical properties. The ionic transport properties of CeO2 have tremendously been elaborated in terms of electrolytes, especially using bulk doping like Sm doped Ceria and gadolinium doped Ceria, but challenges remain. In this work, we propose the surface doping of Sn into CeO2 for the engineering of the electronic structure of CeO2 with a focus on surface properties. The Sn doping into CeO2 enables the Fermi-level to lower level, which further induces a local electric field, dramatically enhancing the surface proton transport at the surface and interface. Furthermore, higher concentrations of Oxygen vacancies and lattice disturbance on the surface layer are mainly ascribed to surface modification, which eventually promotes proton transport. The prepared fuel cell device based on Ce0.9Sn0.1O2 as an electrolyte has delivered a total high performance of 905 mW cm−2 and proton performance of 787 mW/cm2 along with an ionic and protons conductivity of 0.21 and 0.19 S cm−1 at 520 °C. The surface doping of Sn in CeO2 builds continuous surfaces as proton channels for high-speed transport. This work presents a reasonable methodology to develop high-performance, low-temperature ceramic fuel cells.

CeO2-ZnO nano composites: Dual-functionality for enhanced photocatalysis and biomedical applications

In present study, we employed a simple and cost-effective chemical precipitation method to synthesize CeO2:ZnO nanocomposites with various Ce:Zn molar ratios. The X-ray diffraction pattern confirms the formation of a cubic structure of CeO2 and a hexagonal wurtzite structure of ZnO in the Ce:Zn nanocomposites. Structural parameters were determined through a Rietveld refinement process using the X-ray diffraction pattern. The elemental composition of the synthesized compounds were assessed using energy-dispersive X-ray spectroscopy (EDX). Raman spectroscopy revealed the presence of the F2g vibrational mode corresponding to CeO2 NPs as well as the E2 mode corresponding to ZnO NPs. Transmission electron microscopy shows the lateral dimensions of both CeO2 and ZnO nanoparticles in the prepared composites. Photoluminescence (PL) spectra were analysed to examine the defects present in the samples. Absorption spectra were recorded in the wavelength range of 325–1100 nm using UV–Vis spectroscopy. The photocatalytic activity of the synthesized samples was studied for the degradation of methylene blue (MB) under UV light irradiation. Among all prepared composites, the Ce: Zn (1:3) nanocomposite showed the highest photodegradation activity (95 %) against the methylene blue (MB) dye. We also examined in detail the anticancer potential of the Ce:Zn composites against human lung carcinoma cells (A549).

The corrosion resistant Pt5Ce–CeO2 structure provides significant oxygen reduction catalysis

Platinum-based alloy catalysts have been extensively studied in the oxygen reduction reaction (ORR) because of their excellent performance. In this study, Pt5Ce–CeO2/C composite catalysts were synthesized by polyol reduction method and high-temperature calcination method. Owing to the dual effects of the alloying effect of forming Pt5Ce intermetallic compound and the electronic effect of CeO2 modulating the electronic structure of Pt, it exhibits further improved ORR performance than the commercial Pt/C catalysts. The material possesses a 1.0 V starting potential, a 0.83 V half-wave potential, high durability, and methanol resistance. It has strong ORR catalytic activity and works well in Zn-air batteries. The experimental findings demonstrate that metal oxide and alloy structure can be combined to enhance catalyst ORR performance.