📄 chemistry

Synergistic adsorption of heavy metals by magnetic composite biochar: Performance and mechanisms in co‑contamination systems

This study demonstrates that a magnetic composite biochar (M-AMK) fabricated via grinding-assisted pyrolysis and hydrothermal methods effectively and selectively removes lead and tetracycline from co-contaminated water through synergistic mechanisms including ion exchange, surface complexation, and the formation of stable TC–Pb complexes.

Guiling Gao, Haofeng Zhu, Ping Wang, Lei Hu, Xuanyu Zhou, Chenghao Wang, Zhenyu Chen, Zhenya Zhu2026-09-29
📄 chemistry

Pyrolysis-driven molecular reorganization controls photon absorption and reactive-intermediate formation in sewage sludge biochar-derived dissolved organic matter

This study demonstrates that pyrolysis temperature critically controls the release, molecular composition, and photochemical reactivity of sewage sludge biochar-derived dissolved organic matter, revealing that while higher temperatures suppress carbon mobilization, a specific range (400–500 °C) maximizes reactive intermediate formation primarily through enhanced photon absorption driven by the enrichment of aromatic and unsaturated molecular structures.

Xufang Yu, Siyu Liu, Yichun Wang, Siyu Hang, Limeng Shao, Wenchao Ji, Xingjun Fan, Jianzhong Song2026-09-29
📄 chemistry

Dual-Mode Colorimetric Detection of Creatinine Using DTPA-Modified Silver Nanoparticles: Experimental Validation and Computational Analysis

This study presents a dual-mode colorimetric sensor utilizing DTPA-functionalized silver nanoparticles, optimized via Response Surface Methodology and supported by DFT calculations, for the rapid, selective, and sensitive detection of creatinine in urine samples through both UV–Vis spectrophotometry and smartphone-based RGB analysis.

Martina Asti Rahayu, Sonita Afrita Purba Siboro, Lala Adetia Marlina, Muh Rizal B, Nabilah Firyal Suhendra2026-09-29
📄 chemistry

A Novel Model for Predicting Pharmaceutical Stability in Space Environments: Theoretical Formulation of Extended Mean Kinetic Temperature (Space-MKT) Incorporating Space Radiation

This study introduces "Space-MKT," a novel mathematical model that extends traditional Mean Kinetic Temperature calculations by integrating space radiation dose rates to accurately predict pharmaceutical degradation risks in extreme environments, thereby establishing a critical standard for ensuring drug safety in future deep-space missions.

ENSEI MIURA2026-09-29
📄 chemistry

Compatibilization of LDPE/PP Waste Blends Using Acrylamide-Functionalized Phenol- Formaldehyde

This study demonstrates that reactive extrusion of waste-derived LDPE/PP blends with a synthesized acrylamide-functionalized phenol-formaldehyde (AF-PF) compatibilizer significantly enhances interfacial adhesion and microstructural homogeneity, effectively transforming unsorted polyolefin waste into high-performance thermoplastic materials.

Tamerlan Shirinov, Tamilla Naibova, Aytan Mammadova, Christophe Serra, Thibault Parpaite2026-09-29
📄 chemistry

Synergistic enhancement of grinding efficiency, hydration kinetics, and mechanical properties of Portland cement by ethaline

This study demonstrates that incorporating the green deep eutectic solvent ethaline (choline chloride-ethylene glycol) into Ordinary Portland Cement enhances grinding efficiency, extends setting times, reduces hydration heat, and significantly improves 28-day compressive strength by regulating hydration kinetics and refining the microstructure through hydrogen-bond-mediated interactions.

Kuldeep Rajpurohit, ASHOK PANDEY, Hemlata Bagla2026-09-29
📄 chemistry

Excess Molar Enthalpy of Binary Biazeotropic Ester–Carboxylic Acid systems

This study measured and correlated the excess molar enthalpies of three biazeotropic ester–carboxylic acid systems at distillation conditions to determine partial molar vaporization enthalpies, providing essential data for predicting azeotropic behavior under pressure changes for pressure swing distillation.

Farid Bedretdinov, Valentina Raeva, Tatiana Chelyuskina, Nikita Tsvetov, Yuri Anufrikov, Irina Zvereva2026-09-29