Developing low-cost electrocatalysts for the nitrate reduction reaction (NORR) with superior performance is of great significance for wastewater treatment. Herein, we synthesized bimetal Cu/Fe nanoparticles encased in N-doped carbon nanofibers (Cu/Fe@NCNFs) through simple electrospinning followed by a pyrolysis reduction strategy. Metallic copper is beneficial for reducing nitrate to nitrite, and the existence of Fe is conducive to convert nitrate and nitrite into nitrogen. Additionally, the nitrogen-doped carbon nanofibers also facilitate the adsorption of nitrate, and the continuous and complete fiber structure enhances the stability of the catalyst and prevents the corrosion of the active sites. Therefore, the synergetic effect of bimetal Cu/Fe and N-doped carbon fiber plays a key role in promoting the efficiency of nitrate reduction. The obtained Cu/Fe@NCNF catalyst exhibits a satisfactory nitrate conversion efficiency of 76%, removal capacity of 5686 mg N g Cu/Fe and nitrogen selectivity of 94%.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d1nr01489g | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nanofibrous Hydrogel with Highly Salt-Resistant Radial/Vertical-Combined Structure for Efficient Solar Interfacial Evaporation.
Small
March 2025
College of Textile and Clothing Engineering, National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, 215021, P. R. China.
Hydrogel-based solar interfacial evaporators, featuring various channels such as random, unidirectional, and radial array, are considered effective for seawater desalination owing to their porous structure, lower evaporation enthalpy, and controllable water transport capacity. However, each individual array structure has its own strengths and limitations, influencing water transportation, thermal management, and salt rejection. By combining the benefits of each array configuration into a single evaporator, the evaporation performance can be maximized.
View Article and Find Full Text PDFChemically Polymerized Polypyrrole on Glucose-Porcine Skin Gelatin Nanofiber as Multifunctional Electrochemical Actuator-Sensor-Capacitor.
Polymers (Basel)
February 2025
Conducting Polymers in Composites and Applications Research Group, Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam.
Multifunctional materials requiring low functional voltages are the main goal of new industrial smart technologies. Polypyrrole (PPy) was chemically synthesized by a simple dip-coating process on glucose-porcine skin gelatin nanofibers, accelerating mass production, here shown on nanofiber scaffolds (NFs) with those consisting of composites. The isometric and isotonic characterizations by electro-chemo-mechanical deformation (ECMD) of NFS-PPy are obtained from cyclic voltammetric and chronoamperometric responses in lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), lithium triflouromethanesulfonate (LiTF) and sodium perchlorate (NaClO) in propylene carbonate (PC).
View Article and Find Full Text PDFCost-effective sewage-powered microbial fuel cells with nitrogen-doped cobalt carbon nanofiber cathodes and biomass-derived graphitized anodes.
Bioprocess Biosyst Eng
March 2025
Department of Mechanical Engineering, College of Engineering, Qassim University, 51452, Buraydah, Saudi Arabia.
This study presents the design and performance of microbial fuel cells (MFCs) utilizing sewage water as a renewable source for electricity generation. The proposed MFCs employ an air-cathode, single-chamber configuration that harnesses atmospheric oxygen as the electron acceptor, eliminating the need for consumable electron acceptor chemicals. Unlike traditional systems, no external microorganisms are introduced; instead, indigenous microbial communities present in sewage are utilized as efficient biocatalysts.
View Article and Find Full Text PDFMicrowave Absorption Properties of Graphite Nanosheet/Carbon Nanofiber Hybrids Prepared by Intercalation Chemical Vapor Deposition.
Nanomaterials (Basel)
March 2025
School of Mechanical Engineering, Chengdu University, Chengdu 610106, China.
Carbon-based microwave absorption materials have garnered widespread attention as lightweight and efficient wave absorbers, emerging as a prominent focus in the field of functional materials research. In this work, FeNi nanoparticles, synthesized in situ within graphite interlayers, were employed as catalysts to grow carbon nanofibers in situ via intercalation chemical vapor deposition (CVD). We discovered that amorphous carbon nanofibers (CNFs) can exfoliate and separate highly conductive graphite nanosheets (GNS) from the interlayers.
View Article and Find Full Text PDFEffective approaches to co-dope lignin based concave shaped carbon nanofibers with multiple elements for supercapacitors.
Int J Biol Macromol
March 2025
School of Environmental and Natural Resources, Zhejiang University of Science & Technology, Hangzhou 310023, Zhejiang, China.
High-value utilization of lignin to fabricate carbon nanofibers for supercapacitors has drawn much attention due to its sustainability. However, the heterogeneity of crude lignin structure led to the comparatively poor performance of lignin-based carbon nanofibers (LCNF) as electrodes in supercapacitors. Herein, flexible and porous LCNF simultaneously doped with N, S and Zn were firstly synthesized by electrostatic spinning followed by carbonization.
View Article and Find Full Text PDFWant 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!