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Influence of Keto-Enol Tautomerism in Regulating CO Photoreduction Activity in Porous Organic Porphyrinic Photopolymers.
ACS Appl Mater Interfaces
January 2025
Department of Catalysis & Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, Telangana State 500007, India.
Photoassisted CO reduction employing a metal-free system is both challenging and fascinating. In our study, we present a structural engineering strategy to tune the potential energy barrier, which, in turn, affects the photoreduction ability. A series of porphyrin-based porous organic polymers () were hydrothermally synthesized and the influence of keto-enol tautomerization on the CO photoreduction potential has been rigorously investigated.
View Article and Find Full Text PDFProbing Photo-Assisted Charge Storage Mechanism Using Bi-Fe Perovskite Oxide Electrode for Solar Supercapacitor.
Small Methods
December 2024
Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Indore, Simrol, Indore, 453552, India.
In this study, the rhombohedral crystalline pure phase BiFeO (BFO) of irregularly shaped spherical particles of ≈100 nm and energy bandgap of ≈2.31 eV are synthesized by sol-gel auto-combustion method and explored as electrode material for photo-assisted supercapacitor. The electronic structure studies revealed that the coexistence of heterovalent Bi and Fe elements accelerated the electrochemical redox kinetics and photo-assisted charge storage properties.
View Article and Find Full Text PDFElectric Field-Induced Synergetic Enhancement of Local Hydroxyl Concentration and Photogenerated Carrier Density for Removal of CO in Electrocatalytic Formic Acid Oxidation.
Small
December 2024
Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Material Science, Northwest University, Xi'an, 710127, China.
Direct formic acid fuel cell (DFAFC) is an efficient power generation device, due to its high energy density, low fuel crossover and low emission. However, the anodic reaction of DFAFC, formic acid oxidation (FAOR), inevitably proceeds through an indirect pathway, adsorbing carbon monoxide intermediate (CO), resulting in a rapid decline of activity for FAOR. Therefore, effectively removing CO is the key to the development of DFAFC.
View Article and Find Full Text PDFEfficient and Stable Photoassisted Lithium-Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers Dynamics.
Nanomicro Lett
November 2024
State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, People's Republic of China.
Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries (PLIBs), while there is always a request on fast carrier transport in electrochemical active photocathodes. Present work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic nanocrystals. When employed in PLIBs, it was found effective for synchronously enhanced photocharge separation and transport in light charging process.
View Article and Find Full Text PDFMagnetic field and photon co-enhanced S-scheme MXene/InS/CoFeO heterojunction for high-performance lithium-oxygen batteries.
J Colloid Interface Sci
February 2025
School of Material Sciences & Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China. Electronic address:
Under the spotlight for their potential to reduce over-potential, photo-assisted Li-O batteries still face a key challenge: the rapid recombination of photo-generated electron-hole pairs, which limits their efficiency. In this study, we address this limitation by designing a Li-O battery that integrates both photo and magnetic field assistance, using an S-scheme MXene/InS/CoFeO heterojunction photocathode. This unique combination enhances visible light absorption and generates a strong built-in electric field, facilitating effective charge separation and boosting photocatalytic activity.
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