chemistry papers | Gist.Science

Dracocephalum kotschyi Boiss.: Phytochemical profiling, green synthesis of silver nanoparticles, molecular docking, and antibacterial evaluation

This study characterizes the phytochemical profile of *Dracocephalum kotschyi* Boiss., utilizes its aqueous extract for the green synthesis of spherical silver nanoparticles (40–80 nm), and demonstrates the resulting extract, essential oil, and specific phenolic compounds exhibit significant antibacterial activity against various bacterial strains through experimental assays and molecular docking.

Ali Bekhradian, Bahador Karami, Hamid Reza Rajabi, Valiollah Keshavarz2026-07-06

📄 chemistry

Differences in Competitive Adsorption Mechanisms of CH 4 and CO 2 in Mylonitic and Primary Structure Coal

This study utilizes molecular dynamics simulations to demonstrate that mylonitic coal exhibits a significantly stronger competitive adsorption capacity for CO₂ over CH₄ compared to primary structure coal, driven by its unique structural features such as a more complete aromatic ring system, abundant oxygen-containing functional groups, and a higher proportion of ultramicropores.

Wang Lu, Chen Xiaozhen, Li Jing, Li Xiang2026-07-04

📄 chemistry

Innovati̇ve Method of Corrosi̇on Protecti̇on to İncrease the Servi̇ce Li̇fe of Equi̇pment İn Oi̇l and Gas Gatheri̇ng

This paper proposes and evaluates a comprehensive, multi-faceted approach to extending the service life of oil and gas gathering equipment by integrating a new heat-stable naphthenate-based corrosion inhibitor with innovative basalt-plastic and fiberglass insulation and composite pipe technologies, ultimately demonstrating their economic efficiency in highly aggressive field environments.

Almaz Mehdiyeva, Sevinc Bakhshaliyeva, Rovshan Sadigov2026-07-04

📄 chemistry

Soybean and Canola Oils as Sustainable Solvents for the Extraction of Lipid-Soluble Antioxidants from Rosemary Leaves

This study demonstrates that soybean and canola oils serve as effective, sustainable alternatives to chemical solvents for extracting lipid-soluble antioxidants like carnosic acid and carnosol from rosemary leaves, yielding extracts that significantly enhance the oxidative stability of soybean oil.

AbdolHossein Rezaei, Azadeh Bapiri2026-07-04

📄 chemistry

Graphite-Supported Co-ZrO₂ Catalysts for CO₂ Methanation: Influence of Zirconia Loading on Structure and Catalytic Performance

This study demonstrates that graphite-supported Co-ZrO₂ catalysts with an optimal 10 wt.% zirconia loading achieve superior low-temperature CO₂ methanation performance by balancing cobalt reducibility and metal-support interactions, whereas excessive zirconia loading hinders activity by overly strengthening these interactions.

Hajar El Ouahabi, LAURA MARTINEZ Quintana, Inmaculada Rodríguez-Ramos, Mohamed Khaddor, Mohamed Ouzzine, Ana belen Dongi (…)2026-07-04

📄 chemistry

Synergistic iron pyrite-modified cobalt aluminate based on a nanocomposite for advanced oxidative degradation of textile dyes, and practical water treatment

This study demonstrates that a hydrothermally synthesized iron pyrite-modified cobalt aluminate nanocomposite exhibits superior photocatalytic activity, achieving over 90% degradation and mineralization of methylene blue and crystal violet dyes under LED irradiation, even in the presence of real drinking water matrix interference.

Leila Fatolahi2026-07-04

📄 chemistry

Sensing of Nitrogenous Toxic Gases on X-SnSe2/SnO2 Heterostructures by Doping with Rare Earth (X=La, Pr)

This study utilizes density functional theory to demonstrate that Pr-doped SnSe2/SnO2 heterostructures exhibit superior sensing capabilities for oxygen-containing nitrogenous gases like NO2, characterized by high adsorption energy, significant charge transfer, and an increased work function compared to hydrogen-containing gases.

Wisam K. Rhaif, Lafy F. Al-Badry2026-07-04

📄 chemistry

Origin of Negative Permittivity at the Graphene/Polyaniline Two-Dimensional Interface

This study demonstrates that the negative real permittivity observed at the graphene/polyaniline interface originates from the highly uniform orientation and regular stacking of polyaniline chains on graphene, rather than from the graphene itself or the material junction, thereby enabling the interface to function as a geometric metasurface.

Michal Blaha, Martin Mergl, Martin Kalbac2026-07-04

📄 chemistry

Knowledge-informed Bayesian optimization resolves multi-objective trade-offs in 3D printing photopolymers

The paper introduces a knowledge-informed dynamic-constrained Bayesian optimization framework (KI-DC-BO) that iteratively refines feasible search spaces based on experimental feedback to efficiently discover high-performance 3D printing photopolymers with superior tensile strength and thermal resistance within a limited experimental budget.

Zhengyi Fu, Wenjie Gao, Binglin Wang, Shiyue Guo, Shuang Zhao, Zhifang Fei, Guobing Chen, Honglei Wang, Xiaowei Guo, Fan (…)2026-07-03

📄 chemistry

Intercalation of Ag ions into ammonium vanadate toward high-performance and long-lifespan aqueous zinc-ion battery cathodes

This study develops a facile one-pot strategy to fabricate Ag-doped ammonium vanadate cathodes, where synergistic Ag lattice doping and defect engineering simultaneously optimize electronic structure, stabilize the layered framework, and accelerate Zn²⁺ kinetics, resulting in high-performance aqueous zinc-ion batteries with exceptional capacity and long-term cycling stability.

Yu Zhao, Xiu Wang, Yunyun Wang, Hongwei Wang2026-07-03

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