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Modification with chloride and phosphate anions, and coupling with carbon nanotubes could effectively trap holes and transfer the electrons of rutile nanorods, respectively, so as to greatly promote photogenerated charge separation, leading to an obviously-improved cocatalyst-free photocatalytic conversion of CO2 to CH4 and CO, along with the positive effects of constructed phosphate bridges.
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http://dx.doi.org/10.1039/c6cc00772d | DOI Listing |
J Phys Chem A
September 2025
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
The gas-phase structures of dibenzo-24-crown-8 (DB24C8) and dinaphtho-24-crown-8 (DN24C8) complexes with divalent metal ions (Mg, Ca, Sr, Ba, Fe, Ni, and Zn) were investigated by cryogenic ion mobility-mass spectrometry (IM-MS) in combination with density functional theory calculations. Several complexes, particularly those of DN24C8, exhibited multiple coexisting conformers. DFT-optimized structures were classified based on the relative orientation of the two aromatic rings in the crown ether.
View Article and Find Full Text PDFACS Nano
September 2025
State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China.
Airborne pathogens and pollution control typically necessitate multiple membranes, each specializing in efficient aerosol filtration, moisture regulation, or antimicrobial protection. Integrating all these functions into a single membrane is highly advantageous but remains inherently challenging due to material incompatibility and inevitable performance trade-offs. Here, we present a photoactive Janus nanofibrous membrane for highly efficient air purification, engineered via sequential electrospinning.
View Article and Find Full Text PDFChem Sci
August 2025
College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Institute of Life Science and Green Development Hebei University Baoding Hebei 071002 P. R. China
The photocatalytic oxidative dipolar [3 + 2] cycloaddition reaction is a promising green approach for producing pyrrolo[2,1-]isoquinolines. However, developing sustainable cycloaddition methods with heterogeneous photocatalysts is still in its infancy, largely owing to their low reactivity and photostability. Herein, we propose a charge-oxygen synergy strategy through a dual-engineered covalent organic framework (COF) by integrating π-spacers with donor-acceptor motifs to promote intermolecular cycloaddition.
View Article and Find Full Text PDFInt J Mass Spectrom
December 2025
Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907-2084, USA.
An electrostatic linear ion trap (ELIT) is used to trap ions between two ion mirrors with image current detection by central detection electrode. Transformation of the time-domain signal to the frequency-domain via Fourier transform (FT) yields an ion frequency spectrum that can be converted to a mass-to-charge scale. Injection of ions into an ELIT from an external ion source leads to a time-of-flight ion separation that ultimately determines the range of over which ions can be collected from a given ion injection step.
View Article and Find Full Text PDFRSC Adv
August 2025
King Abdulaziz City for Science and Technology (KACST), Hydrogen Technologies Institute Saudi Arabia
This study reports the enhanced photoelectrochemical (PEC) performance of TiO/α-FeO heterostructure films fabricated a sequential aerosol-assisted chemical vapour deposition (AACVD) of hematite at 450 °C, followed by atmospheric pressure CVD (APCVD) of anatase TiO with controlled thickness. Structural analyses (XRD, Raman, XPS) confirmed phase purity and oxidation states, while UV-vis spectroscopy revealed a narrowed bandgap and extended visible light absorption for the heterostructures compared to pristine films. The optimized TiO/α-FeO (8 min) photoanode achieved a photocurrent density of 1.
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