The artificial N2 fixation to NH3 is dominated by the traditional Haber-Bosch process, which consumes large amounts of energy and natural gas with low energy efficiency and large amounts of CO2 emissions. Electrochemical N2 reduction is a promising and environmentally friendly route for artificial N2-to-NH3 fixation under milder conditions. Herein, we report that dendritic Cu acts as a highly active electrocatalyst to catalyze N2 to NH3 fixation under ambient conditions. When tested in 0.1 M HCl, such an electrocatalyst achieves a high faradaic efficiency of 15.12% and a large NH3 yield rate of 25.63 μg h-1 mgcat.-1 at -0.40 V versus a reversible hydrogen electrode. Notably, this catalyst shows high electrochemical stability and excellent selectivity toward NH3 synthesis.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c9cc08234d | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Role of nitrogen amendments on carbon fixation efficiency of ozone exposed lemongrass: Interrelationship between secondary metabolite production and yield.
J Hazard Mater
December 2024
Laboratory of Ecotoxicology, Centre of Advanced Studies, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India. Electronic address:
The phytotoxic nature of Ozone (O) has been well documented in a number of scientific literatures during the last few decades. Although there are sufficient studies related to O impact assessment studies on crop plants and tree species, studies pertaining to O effects on medicinal plants are comparatively sparse. During the recent years, the mitigation strategies for management of O stress in plants have also assumed paramount significance.
View Article and Find Full Text PDFSingle-Atom Mo Supported by TiO for Photocatalytic Nitrogen Fixation.
Langmuir
December 2024
State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, PR China.
The challenge of achieving efficient photocatalysts for the fixation of ambient nitrogen to ammonia persists. The utilization efficiency of single-metal-atom catalysts leads to an increased number of active sites, while their distinctive geometrical and electronic characteristics contribute to enhancing the intrinsic activity of each individual site. In this study, we present a method using an organic molecule to assist in loading TiO with Mo single atoms for the purpose of photocatalytic nitrogen fixation.
View Article and Find Full Text PDFSulfur-bridged iron and molybdenum Catalysts for Electrocatalytic Ammonia Synthesis.
ChemSusChem
December 2024
ICIQ: Institut Catala d'Investigacio Quimica, ICIQ, Av. Paisos Catalans, 16, 43007, Tarragona, SPAIN.
Carbon zero electrocatalytic nitrogen reduction reaction (NRR), converting N2 to NH3 under ambient temperature and pressure, offers a sustainable alternative to the energy-intensive Haber-Bosch process. Nevertheless, NRR still faces major challenges due to direct dissociation of the strong N≡N triple bond, poor selectivity, as well as other issues related to the inadequate adsorption, activation and protonation of N2. In nature's nitrogen fixation, microorganisms are able to convert N2 to ammonia at ambient temperature and pressure, and in aqueous environment, thanks to the nitrogenase enzymes.
View Article and Find Full Text PDFEvaluating the effectiveness of various agents as interim preservative media for biopsy specimens: An experimental in vitro study.
Saudi Dent J
November 2024
Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
In the field of medicine, diagnosing diseases involves various steps, procedures, and protocols. Histopathological examination remains the gold standard for a definitive and accurate diagnosis. This process relies on an initial step of tissue fixation.
View Article and Find Full Text PDFHighly efficient CO capture and chemical fixation of a microporous (3, 36)-connected -type Cu(II)-MOF with multifunctional sites.
Dalton Trans
January 2025
Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
Article Synopsis
- - The study focuses on enhancing CO capture and chemical fixation in Metal-Organic Frameworks (MOFs) by incorporating multiple functional sites, resulting in the development of a new microporous MOF called HNUST-17.
- - HNUST-17 is constructed from a unique ligand and Cu(II) clusters, featuring strong CO-attracting sites like open metal and amino groups that enable efficient CO capture over other gases at room temperature.
- - Additionally, HNUST-17 demonstrates effective catalytic properties for converting CO and epoxides into cyclic carbonates, showing good recyclability and functioning under mild, solvent-free conditions.
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!