📄 Category

chemistry

1676 papers

📄 chemistry

Study on Two-Step and Low-Temperature Wet Activation of Residual Carbon Derived from Coal Gasification Fine Slag and Its Electrochemical Performance for Supercapacitor

This study demonstrates that coal gasification fine slag-derived residual carbon can be effectively converted into high-performance supercapacitor electrodes via a two-step HNO₃ pre-activation and KOH activation process, yielding a material with enhanced surface wettability, a specific capacitance of 155 F g⁻¹, and exceptional cycling stability.

Xiaotian Wang, Jianan Wen, Bingxin Cai, Runguo Li, Zhangcai Zhou, Guoxiang Xin, Jinxiao Bao, Yao Wang, Jinling Song2026-09-08
📄 chemistry

Reaction-Center-Guided Reranking of Transformer Product Predictions with a Product-Conditioned Graph Neural Network

This paper introduces a hybrid framework that enhances Transformer-based product predictions by employing a product-conditioned Graph Neural Network to rerank candidates based on reaction-center consistency, significantly improving Top-1 and Top-3 accuracy on the USPTO-50K dataset without retraining the generator.

Adham Norkobilov, Jaloliddin Eshbobaev, Zafar Turakulov, Sarvar Rejabov, Utkir Safarov, Islomova Farida, Shuhrat Tuxtaev (…)2026-09-08
📄 chemistry

Synthesis, characterization and crystal structures of four copper(II) complexes derived from tridentate Schiff bases with urease inhibitory activity

Four novel copper(II) complexes derived from tridentate Schiff bases were synthesized and structurally characterized, revealing that their urease inhibitory activities are significantly enhanced by coordination, with the polynuclear azide- and thiocyanate-bridged complexes exhibiting superior potency compared to their dinuclear halide-bridged counterparts.

Yang-Lei Li, Zi-Han Pu, Fei-Yang Xie, Zhong-Lu You2026-09-08
📄 chemistry

Effect of Carbon Equivalent and Graphitization Potential on Eutectic Expansion in Gray Cast Iron

This study utilized a novel Thermal Analysis and Linear Displacement Analysis (TA-LDA) method with rigid 3D-printed molds to demonstrate that increasing carbon equivalent, silicon content, graphitization potential, and inoculation significantly enhances eutectic expansion in gray cast iron by promoting stable graphite formation and suppressing shrinkage.

Sarum Boonmee, Auttachai Utsajai2026-09-08
📄 chemistry

Temperature-dependent cation-exchange separation of terbium tracer from gadolinium using α-hydroxyisobutyric acid: relevance to 161Tb production

This study demonstrates that increasing the column temperature to 70°C during cation-exchange chromatography with α-hydroxyisobutyric acid significantly improves the separation efficiency and recovery of terbium from bulk gadolinium, offering a promising method for purifying reactor-produced terbium-161, although the reported results are based on single-run nominal values pending further verification.

Saadatu Bello, Ivan A. Ushakov, Lawal Zubairu, Kamal Babangida, Kabiru Hamzaa2026-09-08
📄 chemistry

Performance of a Two-Stage Ammonia Removal Technology Based on Advanced Oxidation Processes: Effects of Operating Conditions

This study investigates the performance of a two-stage UV-based advanced oxidation process for removing ammonia from contaminated air, demonstrating how optimizing operating conditions enhances conversion efficiency and promotes the formation of recoverable nitrogen species like nitrite and nitrate.

Lucie Spáčilová, Tomáš Mati, Martin Reli, Radim Zebrak, Kamila Kočí2026-09-08
📄 chemistry

Cationic Surfactants as Efficient Corrosion Inhibitors for C-Steel in Oil and Gas Production: Synthesis, Performance Evaluation and Chemical Cleaning

This study demonstrates that two newly synthesized quaternary ammonium cationic surfactants containing Schiff-base moieties, particularly the methoxy-functionalized CS-MB, act as highly efficient corrosion inhibitors for carbon steel in 1 M HCl by forming protective adsorbed layers that significantly reduce surface damage and electrochemical dissolution.

Mohamed A. Hegazy, Hanaa A. El-Boraey, Abdallah M. El-Domiaty2026-09-08
📄 chemistry

Structural, Optical, Dielectric and Ferroelectric Studies of Yttrium Oxide Nanoparticles Synthesised by Hydrothermal Method

This study reports the successful synthesis of surfactant-assisted hydrothermal Yttrium Oxide (Y₂O₃) nanoparticles with an average crystallite size of approximately 19–23 nm, which exhibit favorable structural, optical (3.87 eV band gap), and dielectric properties making them promising candidates for optoelectronic devices, sensors, and polymer-based functional composites.

Nimisha Babu Raj, Arun K.J, Asha K, M D Aggarwal, Padmaja Guggilla2026-09-08
📄 chemistry

Sulfur Addition to Graphene Surfaces Invalidated via Isotopically Pure 13C Graphene

This study invalidates previous claims of covalent sulfur addition to graphene surfaces by demonstrating, through control experiments with isotopically pure 13C graphene, that observed sulfur-carbon bonds were actually artifacts of residual carbon deposition rather than direct radical reactions.

Richard Martel, Simon Sprocq, Elie Hadad, Leonard Schue, Mohammed Amine-Mezour, Pierre Levesque, Alain Rochefort, Mickae (…)2026-09-08