Mn3O4/Ni foam composites were synthesized by a one-step hydrothermal method in an aqueous solution containing only Mn(NO3)2 and C6H12N4. It was found that Mn3O4 nanorods with lengths of 2 to 3 μm and diameters of 100 nm distributed on Ni foam homogeneously. Detailed reaction time-dependent morphological and component evolution was studied to understand the growth process of Mn3O4 nanorods. As cathode material for supercapacitors, Mn3O4 nanorods/composite exhibited superior supercapacitor performances with high specific capacitance (263 F · g-1 at 1A · g-1), which was more than 10 times higher than that of the Mn3O4/Ni plate. The enhanced supercapacitor performance was due to the porous architecture of the Ni foam which provides fast ion and electron transfer, large reaction surface area, and good conductivity.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3878244 | PMC |
| http://dx.doi.org/10.1186/1556-276X-8-535 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Adhesive thermosensitive polydopamine hydrogel containing MnO anchored halloysite clay for treatment of ulcerative colitis.
J Colloid Interface Sci
December 2024
Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511443, PR China. Electronic address:
Ulcerative colitis (UC), a common inflammatory bowel disease, causes ulcers of the colon and rectum. One of the important reasons for intestinal lesions caused by UC is that immune cells produce large amounts of reactive oxygen species (ROS). Herein, we developed an adhesive thermosensitive polydopamine hydrogel containing MnO nanozyme anchored halloysite nanotubes (MnO@HNTs@PDA) to remove ROS produced by immune cells and treatment of UC.
View Article and Find Full Text PDFThree Distinctive Steps for Heterogeneous Nucleation of Tunnel-Structured Mn Oxide on Quartz under Light Exposure.
Environ Sci Technol
December 2024
Department of Energy, Environmental and Chemical Engineering, Washington University, St. Louis, Missouri 63130, United States.
Natural manganese (Mn) oxide coatings, resulting from the heterogeneous nucleation on foreign substances, have garnered interest based on their importance in the reaction with organic substances and in environmental systems. However, the heterogeneous nucleation of the natural Mn oxide coatings still remains elusive. Here, fast photochemical oxidation of Mn(aq), we show that Mn(IV) oxide nuclei form and aggregate on quartz in three distinct successive stages: (i) a nanocrystalline film of unaligned grain forms, (ii) nanoislands develop on the film, and (iii) nanorods form on the nanoislands.
View Article and Find Full Text PDFData on tuning phase crystal of boron-doped manganese oxide and activation in removal of formaldehyde.
Data Brief
December 2024
Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam.
The data in this work provides the effect of aging temperature on manganese oxide allotropes prepared by hydrothermal method in the presence of boron dopant. The synthesized samples were labeled as B/MnO -100, B/MnO -150, and B/MnO -180 corresponding to the hydrothermal temperature at 100, 150, and 180 °C, respectively. X-ray diffraction (XRD) and inductively coupled plasma mass spectrometry (ICP-MS) methods were conducted to clarify the crystalline structure, as well as the amount of potassium, manganese, and boron elements in the three synthesized samples.
View Article and Find Full Text PDFUnravelling the effect of crystal lattice compression on the supercapacitive performance of hydrothermally grown nanostructured hollandite α-MnO induced by incremental growth time.
Sci Rep
October 2024
Department of Physics, College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1710, South Africa.
Manganese oxide (α-MnO) nanoparticles are highly recognised for their use in supercapacitor applications. This study demonstrates the successful synthesis of flower-like and nanorods hollandite α-MnO by a simple one-pot hydrothermal technique at various reaction times. The synthesised nanoparticles were characterised by various physicochemical and electrochemical characterisation techniques.
View Article and Find Full Text PDFMicrofibrous Carbon Paper Decorated with High-Density Manganese Dioxide Nanorods: An Electrochemical Nonenzymatic Platform of Glucose Sensing.
Sensors (Basel)
September 2024
Institut National de la Recherche Scientifique (INRS), Énergie Matériaux Télécommunications (EMT), 1650, Boulevard Lionel-Boulet, Varennes, QC J3X 1P7, Canada.
Nanorod structures exhibit a high surface-to-volume ratio, enhancing the accessibility of electrolyte ions to the electrode surface and providing an abundance of active sites for improved electrochemical sensing performance. In this study, tetragonal α-MnO with a large K-embedded tunnel structure, directly grown on microfibrous carbon paper to form densely packed nanorod arrays, is investigated as an electrocatalytic material for non-enzymatic glucose sensing. The MnO nanorods electrode demonstrates outstanding catalytic activity for glucose oxidation, showcasing a high sensitivity of 143.
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!