A Ag-Mn dual co-catalyst deposited on a K2Ti6O13 photocatalyst significantly enhances the photocatalytic CO2 reduction into CO with an extremely high selectivity of 98% by using H2O as an electron donor, owing to the properties of Ag and MnOx species for promoting CO and O2 formation, respectively.
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http://dx.doi.org/10.1039/c9cc06038c | DOI Listing |
Environ Res
December 2024
School of Chemistry and Chemical Engineering, Hainan University, Haikou, 570228, China. Electronic address:
Fenton reactions, commonly employed in environmental remediation, decompose H₂O₂ using Fe⁺ to generate free radicals. However, the efficiency is often limited by the slow conversion of Fe³⁺ to Fe⁺. In this study, we synthesize zero-valent iron nanoparticles (nZVI) via a green, plant extract-mediated reduction method, resulting in nZVI coated with a reductive polyphenolic layer that enhances Fe³⁺/Fe⁺ cycling.
View Article and Find Full Text PDFJ Colloid Interface Sci
December 2024
State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, People's Republic of China. Electronic address:
Heteroatom doping is a promising strategy for optimizing the photocatalytic activity of semiconductors. However, relying solely on single-element doping often poses challenges in modulating the capabilities of semiconductors. Herein, we adopt a strategy of simultaneously modifying ZnInS with the double non-metallic elements nitrogen (N) and oxygen (O) to form (N, O)-ZnInS.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
October 2024
School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.
Nonoxidative dehydrogenation of propane is useful for the high selectivity to propylene but is suffering from the heavy coke deposition on the catalyst surface. Herein, we present a proof-of-concept application of a hole-hydrogen (H) couple on a metallic cobalt surface to decrease the deactivation rate. The coupled H atoms on the Cobalt (Co) surface, partially resulting from propane dehydrogenation, enabled the desorption of propylene to avoid deep hydrogenolysis and coke deposition and realize selective and durable propylene production, while conventional Co metal-based catalysts do not generate propylene.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:
Radioactive nuclides and highly toxic organophosphates are typical deadly threats. Materials with the function of radioactive substances adsorption and organophosphates degradation provide double protection. Herein, dual-functional polyamide (PA)/polyethyleneimine (PEI)@Zr-MOF fiber composite membranes, fabricated by in-situ solvothermal growth of Zr-MOF on PA/PEI electrospun fiber membranes, are designed for protection against two typical model compounds of iodine and dimethyl 4-nitrophenyl phosphate (DMNP).
View Article and Find Full Text PDFChemSusChem
August 2024
State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering of Ministry of Education, State-Local Joint Engineering Lab for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China.
The synthesis of biofuel γ-valerolactone (GVL) from accessible biomass is an attractive and challenging goal. Here, we report an efficient, one-pot, and mild strategy for the efficient production of GVL from various biomass saccharides without using any homogeneous acid as a co-catalyst and molecular hydrogen as a hydrogen donor. A versatile porous tin-containing material (Sn(M)-S) was designed as an individual heterogeneous catalyst.
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