📄 chemistry

MOF-derived S-scheme CuFe2O4/CuO/C heterojunctions with broad-spectrum response for efficient and stable tetracycline degradation

This study reports the synthesis of a stable, broad-spectrum S-scheme CuFe2O4/CuO/C heterojunction derived from Prussian blue analogues that efficiently degrades tetracycline antibiotics under visible light via a mechanism dominated by superoxide radicals and photogenerated holes.

Liping Wang, Ziyun Zhang, Chunyan Gao, Zhicong Li, Zhijuan Wang, yingchun Miao2026-09-18
📄 chemistry

Architecting Diabolo-Shaped Ln9 (Ln = Tb, Dy, Ho, Er) Homonuclear Clusters: Structural Topology, Magnetic Relaxation, and Theoretical Elucidation

This study reports the synthesis and characterization of a novel family of air-stable, diabolo-shaped nonanuclear lanthanide (Tb, Dy, Ho, Er) clusters bridged by hydroxide/oxide and 1-phenyl-1,3-butanedione ligands, demonstrating that their specific topology facilitates antiferromagnetic exchange interactions that suppress quantum tunneling and enhance single-molecule magnet performance, as confirmed by both experimental magnetic measurements and advanced ab initio theoretical calculations.

Vipanchi ., Keiichi Katoh, Nobuto Funakoshi, Nabanita Deb, Arun Kumar Bar, Masahiro Yamashita, Kuduva R. Vignesh2026-09-18
📄 chemistry

Production of natural uranium chemical concentrate by sorption-free processing of uranium solutions

This study demonstrates that ultrafiltration serves as an effective diagnostic and concentration tool for identifying and recovering hidden, fine-dispersed uranium losses in production mother liquors without chemical additives, thereby enabling detailed characterization of uranium-bearing particles and minimizing overall process losses.

Yerkebulan Sadykov, Tatyana Chepushtanova, Ata Akcil, Armanbek Omirgali, Manarbek Kylyshkanov, Mariya Kopbayeva2026-09-18
📄 chemistry

Synthesis and Characterization of Sulfonated Catalysts for Biodiesel Production from Cow Tallow via Transesterification

This study demonstrates that a sulfonated dolomite iron (SDI) catalyst, synthesized from waste iron filings and dolomite, outperforms a sulfonated calcined iron (SCI) catalyst in converting cow tallow to biodiesel via transesterification, achieving a 77.995% yield attributed to its superior surface area, pore volume, and sulfate-rich phase composition.

I. A. Tijani, Babatunde E. O, Ajala E. O2026-09-18
📄 chemistry

Synthesis of Cyanoalkyl-Substituted 3-Trifluoromethyl-2-oxindoles via Silver-Catalyzed Radical Cascade Cyclization of α-Imino-Oxy Acids with α-Trifluoromethyl Acrylamides

This paper reports a mild, silver-catalyzed radical cascade cyclization of α-imino-oxy acids with α-trifluoromethyl acrylamides to efficiently synthesize cyanoalkyl-substituted 3-trifluoromethyl-2-oxindoles with broad substrate scope and utility in late-stage functionalization.

Feng Li, Ziyi Li, Maocong Yi, Kaihua Yue, Yukai Liu, Mingyue Cui, Chong Li, Xi Li, Kai Sun, Jingjing Wang2026-09-18
📄 chemistry

Bypassing reductive dimerization of bottleneck PFAS intermediates via asymmetric advanced oxidation for absolute defluorination

This study overcomes the reductive dimerization bottleneck in PFAS degradation by employing an asymmetric advanced oxidation process that utilizes vacuum ultraviolet irradiation to intercept ultra-short intermediates via localized orbital polarization, thereby enabling complete defluorination through a synergistic oxidant-to-reductant ratio defined by a newly established chemical descriptor.

Wenjun Sun, Yanei Xue, Guoqing Jiang, Bing Zhang, Wenxin Shi, Madjid Mohseni Madjid Mohseni, Ted Mao2026-09-18
📄 chemistry

Relativistic Slater–Dirac–Lamb Modelling of Atomic Ionization Energies, Electron Affinities, Covalent Radii and Debye Temperatures: Validation on 56 NIST Reference Indicators

This paper introduces and rigorously validates a closed-form, first-principles physics model for predicting key atomic properties, achieving a mean absolute percentage error of 0.17% across 56 NIST reference indicators while providing comprehensive documentation, comparative analysis, and links to sustainable development goals.

Lucas Lima Freitag2026-09-18
📄 chemistry

Pilot-scale pretreatment of sugarcane straw using a combined sulfuric acid- and bisulfite-catalyzed steam explosion process

This study demonstrates that a pilot-scale steam explosion pretreatment of sugarcane straw, optimized with a specific combination of higher soaking pH and sodium metabisulfite addition, effectively mitigates pseudo-lignin formation to achieve 100% enzyme accessibility and maximum hydrolysis yields at low enzyme dosages.

Marcelo B. W. Saad, Rodrigo H. S. Garcia, Vanessa O. A. Pellegrini, Francisco E. G. Guimaraes, Eduardo R. DeAzevedo, Igo (…)2026-09-18