A Ternary composite UiO-66/CdS/1% reduced graphene oxide (RGO) was successfully prepared, with a photocatalytic hydrogen evolution rate 13.8 times as high as that of pure commercial CdS. It shows great advantages over the perfect composite photocatalyst-P25/CdS/1%RGO.
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http://dx.doi.org/10.1039/c4cc01776e | DOI Listing |
Langmuir
January 2025
Key Laboratory of Thorium Energy, Chinese Academy of Science Shanghai Institute of Applied Physics, Shanghai 201800, China.
Hydrogen evolution from water, catalyzed by solar energy, is a promising yet challenging endeavor. Small-sized catalysts usually exhibit high utilization and high performance in the hydrogen evolution field. However, the high surface energy tends to make them aggregate.
View Article and Find Full Text PDFNanoscale Adv
January 2025
Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education 01 Vo Van Ngan Street, Linh Chieu Ward, Thu Duc City Ho Chi Minh City 700000 Vietnam
Photocatalytic methane oxidation under mild conditions using single-atom catalysts remains an advanced technology. In this work, gold single atoms (Au SAs) were introduced onto TiO nanostructures using a simple method. The resulting performance demonstrated effective conversion of methane into H and C products at room temperature.
View Article and Find Full Text PDFChemistry
January 2025
The Hong Kong Polytechnic University, Department of Applied Biology and Chemical Technology, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Hom, Hong Kong (P.R. China), 000000, Hong Kong, HONG KONG.
A series of new (donor)₂-donor-π-acceptor (D2-D-π-A) and (acceptor)₂-donor-π-acceptor (A2-D-π-A) organic photosensitizers based on the framework of (Z)-2-cyano-3-(5-(4-(diphenylamino)phenyl)thiophen-2-yl)acrylic acid have been synthesized and characterized. By incorporating groups with different electron-donating or withdrawing abilities, such as dibenzothiophene (DBT), dibenzofuran (DBF), and triazine (TA), into the triphenylamine segment, their photophysical properties have been regulated. Theoretical calculations were used to explore how various donor-acceptor combinations influence their hydrogen production performance.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Shanghai Institute of Ceramics Chinese Academy of Sciences, State Key Laboratory of High Performance Ceramics and Superfine Microstructure, CHINA.
Pairing photocatalytic 1,2,3,4-tetrahydroisoquinoline semi-dehydrogenation reaction (THIQ-SDR) with two-electron oxygen reduction reaction (2e- ORR) is a green solar to chemical strategy by simultaneously utilizing the photo-excited electrons and holes. However, it is still short of high-efficiency photocatalyst to drive two reactions above. In the present work, crystalline pyrene-thiourea/urea covalent organic frameworks (COF-Py-S and -O) were synthesized and demonstrated as high-performance metal-free photocatalysts.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Beijing Institute of Technology, School of Chemistry and Chemical Engineering, 8th Liangxiang East Road, Room 829, Eco-Industrial Building, Beijing, 102488, Beijing, CHINA.
The structural isomerism of atomically precise nanoclusters provides a preeminent theoretical model to investigate the structure-property relationships. Herein, we synthesized three bowl-like polyoxometalate (POM)-encapsulated Ag nanoclusters (denoted as {Ag14(Sb3W30)2}-1, {Ag14(Sb3W30)2}-1a, and {Ag14(Sb3W30)2}-2) via a facile one-pot solvothermal approach. Among them, for the first time, an unprecedented isomeric {Ag14}10+ nanoclusters are obtained in polyoxoanions {Ag14(Sb3W30)2}-1 and {Ag14(Sb3W30)2}-2, which should be probably induced by the different distribution of coordinating O atoms in two isomeric bowl-like {Sb3W30} ligands.
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