In order to achieve in-situ HO generation in multi-environment systems, polyvinylpyrrolidone (PVP) and modified carbon nitride (t-g-CN) are co-doped onto graphite felt-matrix (GF-matrix) by electrodeposition to develop a novel cathode electrode. By means of 3D-X-ray CT, High-Resolution Transmission Electron Microscope (HRTEM), X-ray Photoelectron Spectrometer (XPS), Raman and Electrochemical Workstation, microscopic physical-chemical properties of materials are researched to optimize the electrode structure. Results show that the optimal electrode presents over HO production rate of 2000 mgL·h, and as high as current efficiency of 93% to 98% in simulated freshwater (50 mM NaSO, pH = 1-12) at 20 mAcm. Furthermore, we built an original three-dimensional (3D) flow-through GF-matrix cathode model on HO generation in simulated freshwater, explaining solution pH change reasons from solution inlet to outlet.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jcis.2022.04.108 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Magnetic, conductive nanoparticles as building blocks for steerable micropillar-structured anodic biofilms.
Biofilm
December 2024
Institute of Technical Microbiology, University of Technology Hamburg, Hamburg, Germany.
In bioelectrochemical systems (BES), biofilm formation and architecture are of crucial importance, especially for flow-through applications. The interface between electroactive microorganisms and the electrode surface plays an important and often limiting role, as the available surface area influences current generation, especially for poor biofilm forming organisms. To overcome the limitation of the available electrode surface, nanoparticles (NPs) with a magnetic iron core and a conductive, hydrophobic carbon shell were used as building blocks to form conductive, magnetic micropillars on the anode surface.
View Article and Find Full Text PDF3D-Printed Dual-Channel Flow-Through Miniaturized Devices with Dual In-Channel Electrochemical Detection.
Anal Chem
December 2024
Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, E-28802 Madrid, Spain.
Here, we present three-dimensional-printed dual-channel flow-through miniaturized devices (3D) with dual electrochemical detection (ED) integrating two working electrodes each in an in-channel configuration (3D-ED). Prussian Blue (PB) shell-gold nanoparticles ((PB)AuNP) core-based electrochemistry was chosen for selective hydrogen peroxide determination. 3D-ED devices exhibited impress stability, identical intrachannel and interchannel electrochemical performances, and excellent interdevice precision with values under 9%, revealing the reliability of the design and fabrication of the devices.
View Article and Find Full Text PDFFlow field design and visualization for flow-through type aqueous organic redox flow batteries.
Proc Natl Acad Sci U S A
December 2024
Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, P. R. China.
Aqueous organic redox flow batteries (AORFBs), which exploit the reversible redox reactions of water-soluble organic electrolytes to store electricity, have emerged as a promising electrochemical energy storage technology. Organic electrolytes possess fast electron-transfer rates that are two or three orders of magnitude faster than those of their inorganic or organometallic counterparts; therefore, their performance at the electrode is limited by mass transport. Direct adoption of conventional cell stacks with flow fields designed for inorganic electrolytes may compromise AORFB performance owing to severe cell polarization.
View Article and Find Full Text PDFMR dacryocystography - Optimising a dynamic imaging protocol for patients with epiphora.
Radiography (Lond)
January 2025
Department of Ophthalmology, Sussex Eye Hospital, Eastern Road, Kemptown, Brighton, BN2 5BF, United Kingdom.
Article Synopsis
- The report discusses the development of a non-invasive Magnetic Resonance Dacryocystography (MRDCG) technique for assessing the nasolacrimal drainage system (NLDS), which avoids ionising radiation.
- A protocol was created using a 1.5 Tesla MRI scanner, where gadolinium contrast is slowly infused to visualize the NLDS anatomy and functionality in real-time.
- Results showed that 85% of cases allowed for clear visualization of the NLDS, highlighting the technique's potential, though further comparison with traditional methods is needed.
Implantable 3D printed hydrogels with intrinsic channels for liver tissue engineering.
Proc Natl Acad Sci U S A
November 2024
Department of Surgery, Massachusetts General Hospital, Boston, MA 02114.
This study presents the design, fabrication, and evaluation of a general platform for the creation of three-dimensional printed devices (3DPDs) for tissue engineering applications. As a demonstration, we modeled the liver with 3DPDs consisting of a pair of parallel millifluidic channels that function as portal-venous (PV) and hepatobiliary (HB) structures. Perfusion of medium or whole blood through the PV channel supports the hepatocyte-containing HB channel.
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!