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Electrochemically synthesized HO at industrial-level current densities enabled by in situ fabricated few-layer boron nanosheets.
Nat Commun
December 2024
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China.
Carbon nanomaterials show outstanding promise as electrocatalysts for hydrogen peroxide (HO) synthesis via the two-electron oxygen reduction reaction. However, carbon-based electrocatalysts that are capable of generating HO at industrial-level current densities (>300 mA cm) with high selectivity and long-term stability remain to be discovered. Herein, few-layer boron nanosheets are in-situ introduced into a porous carbon matrix, creating a metal-free electrocatalyst (B-C) with HO production rates of industrial relevance in neutral or alkaline media.
View Article and Find Full Text PDFRobust Immobilization and Activity Preservation of Enzymes in Porous Frameworks by Silica-Based "Inorganic Glue".
Adv Mater
December 2024
MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, P. R. China.
The development of novel methods to enhance enzyme-carrier interactions in situ, at a feasible cost, and on a large scale is crucial for improving the stability and durability of current immobilized enzyme systems used in industrial settings. Here, a pioneering approach termed "silica-based inorganic glue" is proposed, which utilizes protein-catalyzed silicification to fix enzyme within porous matrix while preserving enzyme activity. This innovative strategy offers several key benefits, including conformational stabilization of enzymes, improved interactions between enzymes and the matrix, prevention of enzyme leakage, and mitigation of pore blocking.
View Article and Find Full Text PDFPyDNA-templated AgNPs coupled with poly (β‑cyclodextrin) enhanced fluorescence: A facile platform for signal amplification detection of biothiols in living cells and zebrafish.
Spectrochim Acta A Mol Biomol Spectrosc
December 2024
School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, PR China.
Accurate and sensitive fluorescence imaging of biothiols is essential for understanding the mechanism underlying some physiological and pathological events, as well as the prevention and diagnosis of diseases. However, low signal transduction efficiency and poor biocompatibility of fluorescence tags associated with current sensors hinder their potential utilizations. Herein, a smart biothiols sensitive vivo imaging platform on the basis of amplifying nanoprobe has been designed.
View Article and Find Full Text PDFPhotoelectrochemical biosensing platform based on switch of photocurrent polarity of CdS/Ni-CAT nanorod arrays by Au@CuO for highly selective and sensitive CEA detection.
Talanta
December 2024
State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China. Electronic address:
Sensitive and accurate determination of tumour biomarkers is extremely important for early cancer diagnosis. Herein, a photoelectrochemical biosensor platform was constructed for ultrasensitive tumour biomarker detection by utilizing Au@CuO to switch the photocurrent polarity of CdS/Ni-catecholates metal-organic framework (Ni-CAT) nanorod arrays grown in situ on ITO. The Ni-CAT obtains close contact with ITO and forms a Z-scheme heterojunction with CdS, which improves the photogenerated electron transfer ability.
View Article and Find Full Text PDFA Regiospecific Co-Assembly Method to Functionalize Ordered Mesoporous Metal Oxides with Customizable Noble Metal Nanocrystals.
ACS Cent Sci
December 2024
Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China.
An efficient regiospecific co-assembly (RSCA) strategy is developed for general synthesis of mesoporous metal oxides with pore walls precisely decorated by highly dispersed noble metal nanocrystals with customized parameters (diameter and composition). It features the rational utilization of the specific interactions between hydrophilic molecular precursors, hydrophobic noble metal nanocrystals, and amphiphilic block copolymers, to achieve regiospecific co-assembly as confirmed by molecular dynamics simulations. Through this RSCA strategy, we achieved a controllable synthesis of a variety of functional mesoporous metal oxide composites (e.
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