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Noble-metal-free Electrocatalysts for Selective Hydrogen Peroxide Generation via Oxygen Reduction Reaction.
Chemistry
January 2025
Tianjin University, Department of Chemistry, 92 Weijin Road, 300072, Tianjin, CHINA.
Hydrogen peroxide (H2O2) is a versatile chemical widely used in various industries. The traditional anthraquinone method for H2O2 synthesis has environmental and safety concerns due to the use of organic solvents and hazardous by-products. The direct synthesis of H2O2 from H2 and O2 poses risks of flammability and explosion.
View Article and Find Full Text PDFInvestigation of Natural Dyes and Taxonomic Identification of Fibers Used in Chancay Textiles by Vibrational Spectroscopy and Mass Spectrometry.
J Proteome Res
January 2025
Museum Conservation Institute, Smithsonian Institution, Suitland, Maryland 20746, United States.
Textiles provide a valuable source of information regarding past cultures and their artistic practices. Understanding ancient textiles requires identifying the raw materials used, since the origin of dyes and fibers may be from plants or animals, with the specific species used varying based on geography, trade routes and cultural significance. A selection of nine Chancay textile fragments attributed to 800-1200 CE were studied with liquid chromatography mass spectrometry (LC-MS) and direct analysis in real time mass spectrometry (DART-MS) to identify the chemical compounds in extracts of natural dyes used to create green, blue, red, yellow and black colors.
View Article and Find Full Text PDFRevealing the excited-state mechanisms of the polymorphs of a hot exciton material.
Nat Commun
January 2025
Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China.
As the investigation of high efficiency thermally activated delayed fluorescence (TADF) materials become more mature, regulating the emission properties for single organic luminescence molecules has gained increasing interest recently. Herein, the donor-acceptor compounds F-AQ comprised of fluorene and anthraquinone is reported, and it exhibits a polymorphism with muti-color emission and TADF from high-level intersystem crossing (hRISC). The photodynamics and excited-state transient species were studied by femtosecond transient absorption (fs-TA) spectroscopy.
View Article and Find Full Text PDFIdentification and Characterization of Chemical Compounds in Compound Shougong Powder by UHPLC-Q-TOF/MS Combined With Multiple Data Processing Techniques.
J Sep Sci
January 2025
College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China.
Compound Shougong Powder (CSP) is a traditional Chinese medicine (TCM) preparation recognized for its efficacy in reducing swelling and relieving pain. It is primarily used clinically for the treatment of malignant tumors. However, research on the chemical compounds present in CSP remains limited.
View Article and Find Full Text PDFResearch Progress on the Anti-Liver Cancer Mechanism and Toxicity of Rhubarb Anthraquinone.
Drug Des Devel Ther
December 2024
Department of Pharmacy, Chengdu Integrative TCM & Western Medicine Hospital, Chengdu, Sichuan, 610095, People's Republic of China.
Ethnopharmacological Relevance: Rhubarb has the effect of breaking blood stasis and abnormal mass, and was often used to treat various tumor diseases including liver cancer in ancient China. Recipes containing rhubarb have anti-liver cancer properties and are still used today. However, the main components and mechanism of action of rhubarb against liver cancer are still unclear.
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