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The development of advanced catalysts for various electrochemical reactions necessitates precise characterization of their structure and dynamic evolution. This study introduces an innovative electrochemical cell tailored for operando X-ray characterizations, including X-ray diffraction (XRD) and X-ray absorption fine structure (XAFS). The cell features an adjustable aqueous electrolyte window to reduce X-ray signal absorption and an integrated flow system for efficient removal of gas products. This design enables simultaneous XRD and XAFS measurements in both fluorescence and transmission modes. Using LiCoO as a model oxygen evolution reaction catalyst, operando measurements reveal structural transformations during the reaction. This device will aid in the exploration of catalyst mechanisms and the development of high-performance catalysts.
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http://dx.doi.org/10.1107/S1600577525005612 | DOI Listing |
ACS Sens
September 2025
College of Chemistry, Beijing Normal University, Beijing 100875, China.
Dopamine (DA) signaling is essential for neurodevelopment and is particularly sensitive to disruption during adolescence. Protein restriction (PR) can impair DA dynamics, yet mechanistic insights remain limited due to challenges in real-time neurochemical sensing. Here, we present aptCFE, a robust implantable aptamer-based sensor fabricated via a reagent-free, 3 min electrochemical conjugation (E-conjugation) using amine-quinone chemistry.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
The development of anode materials for lithium-ion batteries must meet the demands for high safety, high energy density, and fast-charging performance. TiNbO is notable for its high theoretical specific capacity, low structural strain, and exceptional fast-charging capability, attributed to its Wadsley-Roth crystal structure. However, its inherently poor conductivity has hindered its practical application.
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
Narrow electrochemical windows and high reactivity of aqueous solutions remain critical bottlenecks for the practical application of aqueous batteries. However, the mechanisms for tuning microscopic reactivity of HO molecules in aqueous electrolytes remain elusive. This study employs six ether molecules with distinct structures and solvation powers to regulate the microstructure of aqueous solutions.
View Article and Find Full Text PDFAnal Chem
September 2025
Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, P. R. China.
Electroactive bacteria (EAB) hold great promise for the development of electrochemical biosensors given their unique ability to transfer electrons extracellularly via specialized pathways, a process termed extracellular electron transfer (EET). Ongoing research aims to overcome current limitations and fully harness the potential of EABs for high-performance biosensing applications. Herein, we report the fabrication of an electrochemical microsensor based on biomineralized electroactive bacteria, specifically MR-1.
View Article and Find Full Text PDFSmall
September 2025
School of Chemistry and Chemical Engineering, Key Lab of Fuel Cell Technology of Guangdong Province, South China University of Technology, Guangzhou, 510641, China.
Aggregation-induced electrochemiluminescence (AIECL) is a promising strategy for enhancing electrochemiluminescence (ECL) efficiency by minimizing energy loss of excited-state ECL emitters. However, rational design of high-efficiency AIECL emitters is hindered by limited mechanistic understanding and an unclear structure-performance relationship. To address this, four supramolecular coordination frameworks (SCFs) with varying π-bridge structures are synthesized using pyridine-functionalized tetraphenylethene (TPE) as the ligand and Pt(II) as the coordination center.
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