The electrochemical N reduction reaction (NRR) demonstrates a process of NH synthesis from N molecules under ambient conditions, which is environmentally friendly and recyclable. However, it requires an efficient electrocatalyst to activate inert N molecules, which is still difficult to satisfy. Recently, as an active NRR electrocatalyst and a typical metal oxide, CeO has featured ultrahigh thermal stability and the ability to apply heteroatom doping, which is an imperative approach importing oxygen vacancy by replacing metal ions with selective elements to greatly influence the activity of catalysts. Here, we analyze the unique properties of manganese dopants in modulating the activity of CeO nanospheres for NRR. It attains a larger NH yield of 27.79 μg h mg and a higher Faradaic efficiency of 9.1% than pure CeO at -0.30 V in 0.1 M HCl, with high electrochemical and structure stability. With calculations by density functional theory, the performance enhancement of Mn-doped CeO is also proved mathematically.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.inorgchem.1c02989 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Relation between shape-tailored CeO nanoparticles morphology and hemocompatibility and antimicrobial effect.
Biomater Adv
June 2025
Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, Treboniu Laurian str. 42, RO-400271, Cluj-Napoca, Romania; Faculty of Physics, Babeș-Bolyai University, M. Kogălniceanu str. 1, RO-400084 Cluj-Napoca, Romania. Electronic address:
Cerium is one of the most studied rare elements whose oxidative state (Ce and Ce) can be changed in different environments. Cerium oxide nanoparticles (CeO NPs), which are nevertheless more complex chemical structures, are nowadays very exciting entities involved in the biomedical field, particularly in the four stages of wound healing. In the first stage, called hemostasis, several issues such as the required morphology to be biologically efficient, and the effect of Ce and Ce on the applicability potential of CeO NPs remain unclear.
View Article and Find Full Text PDFCerium Oxide with Specific Surface Oxygen Vacancy and Facet for Nitrate Synthesis through Electrocatalytic Nitrogen Oxidation.
Inorg Chem
February 2025
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
Recently, the green and sustainable synthesis of nitric acid (HNO) through the electrochemical nitrogen oxidation reaction (NOR) has attracted significant attention. Developing high-efficiency electrocatalysts to overcome the challenges caused by the chemical inertness of N and the slow, 10-electron transfer kinetics is highly desirable. In this work, we investigated the NOR performance of cerium oxide (CeO), which is known for its excellent oxygen storage and release capabilities.
View Article and Find Full Text PDFHollow-structured Zn-doped CeO mesoporous spheres boost enhanced antioxidant activity and synergistic bactericidal effect.
Colloids Surf B Biointerfaces
February 2025
School of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing 100048, PR China; Institute of Cosmetic Regulatory Science, Beijing Technology and Business University, Beijing 100048, PR China. Electronic address:
The increasing prevalence of antibiotic-resistant bacteria is regarded as one of the worst threats to the environment and global health, and antimicrobial nanomaterials have been increasingly explored to provide solutions for antimicrobial resistance problems. In this paper, mesostructured Zn-doped CeO hollow spheres (ZDCHS) with various Zn/Ce ratios were successfully prepared by a conventional one-pot hydrothermal synthesis method. The ingenious incorporation of Zn playing a vital role in the fabrication of hollow structure of ZDCHS with high specific surface area, and detailed transmission electron microscopy (TEM) characterization confirmed the homogeneous distribution of Zn element across the ZDCHS.
View Article and Find Full Text PDFEnhanced Electrochemical Performance of Highly Porous CeO-Doped Zr Nanoparticles for Supercapacitor Applications.
Microsc Res Tech
March 2025
UNESCO-UNISA Africa Chair in Nanoscience's/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), Pretoria, South Africa.
The aim of this work was to develop an ultrasonic-assisted synthesis method for the fabrication of CeO-doped Zr nanoparticles that would improve the performance of supercapacitor electrodes. This method, which eliminates the need for high-temperature calcination, involves embedding CeO into Zr nanoparticles through 1 hr (CeO-Zr-1) and 2 hrs (CeO-Zr-2) of ultrasonic irradiation, resulting in the formation of nanostructures with significant improvements in their electrochemical properties. Through physicochemical analysis, we observed that the CeO-doped Zr nanoparticles, particularly those treated for 2 hrs (CeO-Zr-2), exhibit superior crystalline phase purity, optimal chemical surface composition, minimal agglomeration with particle sizes below 50 nm, and an impressive average surface area of 178 m/g.
View Article and Find Full Text PDFUltrasensitive ECL immunoassay for CA15-3 via self-enhanced L012-loaded ZnNi-MOF as an emitter and CeO-Pt as a co-reaction accelerator.
Talanta
February 2025
State Key Laboratory of Analytical Chemistry for Life and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
Article Synopsis
- The study focuses on enhancing ECL biosensors' sensitivity and accuracy through a novel ZnNi-MOF/PEI nanosphere-based immunosensor for detecting the CA15-3 cancer biomarker.
- PEI not only helps link the luminophore and the detection antibody but also boosts the ECL signal by acting as a co-reactant.
- The combined effect of a Pt nanoparticle-functionalized CeO nanorod system improves signal detection further, allowing the biosensor to effectively identify low levels of biomarkers, paving the way for better clinical breast cancer diagnosis.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!