jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Mohamad Nor Amirul Azhar Kamis | Hamizah Mohd Zaki | Adila Mohamad Jaafar | Mohammad Noor Jalil | Nur Shafiqa Nabila Mohd Nor
Source: Universiti Putra Malaysia Institutional Repository (Universiti Putra Malaysia) (article, 2025-11-01)
Field: Materials Science — Materials Chemistry

Synthesis and corrosion protection of 3:1 MgAl Layered Double Hydroxides: metals concentration study via coprecipitation This study investigates the effect of metal ion concentration on the formation and properties of Mg-Al Layered Double Hydroxides (LDHs) with a fixed Mg²⁺/Al³⁺ molar ratio of 3:1. While previous studies often report this ratio, the influence of concentration on LDH purity and structure remains less explored. LDH samples synthesized through coprecipitation method at varying concentrations were characterized using PXRD, TGA, FTIR, FESEM, BET surface area analysis, and elemental analysis techniques. The findings confirm the successful formation of nitrate-intercalated LDHs across all concentrations, with consistent structural and morphological features. Although metal concentration influenced the crystallinity and surface characteristics, the highest metal concentration LDH (S3) was observed to efficiently inhibit the corrosion of mild steel in neutral NaCl solution through ion-exchange process. Coprecipitation ; Layered double hydroxides ; Metal ; Crystallinity ; Corrosion ; Molar ratio Layered Double Hydroxides Synthesis and Applications ; Corrosion Behavior and Inhibition ; Magnesium Oxide Properties and Applications
Authors: Preeti Chahal | P Anastas | J Warner | D Astruc | A Corma | H Garca | A Leyva-Prez | G Hutchings | M Haruta | A Hashmi | V Polshettiwar | R Varma | R Sheldon | Q Zhang | H Su | Y Wang
Source: resMilitaris (article, 2025-05-01)
Field: Chemistry — Organic Chemistry

Nanostructured Catalysts in Green Chemistry: Enhancing Efficiency and Sustainability through Nanotechnology At the vanguard of green chemistry, nanostructured catalysts have become revolutionary instruments in the search for chemical processes that are ecologically sustainable.These nanoscale materials allow catalytic processes to occur with extraordinary efficiency and selectivity at gentler circumstances because of their large surface area, distinct electronic characteristics, and customisable reactivity.The design, synthesis, and functionalisation methods of nanocatalysts are thoroughly reviewed in this work, emphasising how these materials may be modified at the atomic and molecular levels to improve performance.It goes on to examine their many uses in environmentally friendly chemical transformations, such as the conversion of biomass, the breakdown of pollutants, the creation of fuel that uses less energy, and the synthesis of fine chemicals.Nanocatalysts directly support more environmentally friendly industrial processes and less environmental impact by enabling quicker reaction rates, decreasing energy needs, and drastically reducing harmful byproducts.But issues including nanoparticle aggregation, gradual loss of catalytic activity, possible toxicity, and the difficulties of manufacturing scaling up continue to be major obstacles to their widespread use.This paper highlights the value of multidisciplinary research, lifecycle analysis, and regulatory frameworks while also assessing new technical developments meant to get beyond these restrictions.In the end, incorporating nanocatalysts into green chemistry has enormous potential to spur innovation, enhance process sustainability, and forward the international environmental protection agenda. Nanotechnology ; Sustainability ; Green chemistry ; Catalysis ; Chemistry ; Materials science ; Ecology ; Organic chemistry ; Biology Nanomaterials for catalytic reactions
Authors: Mohamad Nor Amirul Azhar Kamis | Hamizah Mohd Zaki | Adila Mohamad Jaafar | Mohammad Noor Jalil | Nur Shafiqa Nabila Mohd Nor
Source: Trends in Sciences (article, 2025-11-01)
Field: Materials Science — Materials Chemistry

Synthesis and Corrosion Protection of 3:1 MgAl Layered Double Hydroxides: Metals Concentration Study via Coprecipitation This study investigates the effect of metal ion concentration on the formation and properties of Mg-Al Layered Double Hydroxides (LDHs) with a fixed Mg²⁺/Al³⁺ molar ratio of 3:1. While previous studies often report this ratio, the influence of concentration on LDH purity and structure remains less explored. LDH samples synthesized through coprecipitation method at varying concentrations were characterized using PXRD, TGA, FTIR, FESEM, BET surface area analysis, and elemental analysis techniques. The findings confirm the successful formation of nitrate-intercalated LDHs across all concentrations, with consistent structural and morphological features. Although metal concentration influenced the crystallinity and surface characteristics, the highest metal concentration LDH (S3) was observed to efficiently inhibit the corrosion of mild steel in neutral NaCl solution through ion-exchange process. HIGHLIGHTS Nitrate-intercalated LDHs were successfully obtained at all concentrations with consistent layered structures. Higher metal ion concentration enhanced LDH crystallinity and surface properties. The LDH prepared at the highest concentration (S3) showed superior corrosion inhibition of mild steel in NaCl solution through the ion-exchange mechanism. GRAPHICAL ABSTRACT Coprecipitation ; Crystallinity ; Layered double hydroxides ; Metal ; Corrosion ; Metal ions in aqueous solution Layered Double Hydroxides Synthesis and Applications ; Corrosion Behavior and Inhibition ; Concrete Corrosion and Durability
Authors: Xinyu Xie | Yufeng Wu | Yunzhi Li | Anqi Li | Jiaoyang Gong | Chang Li | Zhuting Zhang | Hsiang-Shun Chang | Yan Feng | Tanyi Wang | Peng Du | Hehe Wei | Jianchun Xu | Yunjian Guo | Kai Huang | Ming Lei | Ke Bi | Hui Wu
Source: Nano Research (article, 2025-12-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Tunable microwave absorption driven by electrochemically air-breathing With the rapid development of information technology, electromagnetic protection and compatibility issues have an indispensable role in daily life, social development and military applications of national defense. However, the current electromagnetic absorption materials are limited in that they can only offer a fixed level of absorption loss, making them challenging to adapt to complex application environments. This study integrates electrochemical devices with conventional multilayer wave-absorbing structures, leveraging multilayer interfacial coupling effects and dynamic impedance matching during device operation to achieve tunable wave-absorption performance. The system demonstrates a maximum modulation efficiency of 15 dB while retaining its regulatory capability after 200 bending cycles. By incorporating zinc-air battery modules into multilayer wave-absorbing materials, this work overcomes the limitations of traditional tunable absorbers that rely on mechanical deformation or thermally induced phase transitions for performance modulation. The proposed design not only simplifies modulation mechanisms but also significantly reduces energy consumption during absorption adjustment and enhances response speed, offering a novel paradigm for tunable wave-absorbing materials. Microwave ; Absorption (acoustics) ; Modulation (music) ; Impedance matching ; Coupling (piping) ; Electrochemistry ; Electrical impedance Electromagnetic wave absorption materials ; Metamaterials and Metasurfaces Applications ; Advanced battery technologies research
Authors: Alina Sermiagin | Svetlana Lyssenko | Ayan Barbora | Hani Porat | Arie Borenstein | Refael Minnes
Source: Scientific Reports (article, 2025-11-17)
Field: Materials Science — Electronic, Optical and Magnetic Materials

One pot synthesis of klockmannite CuSe nanoparticles for supercapacitors and the electrolyte role In this paper, we successfully developed a rapid and straightforward one-pot synthesis method for klockmannite CuSe nanoparticles, demonstrating their potential application in supercapacitors. This synthesis is notably faster and simpler than previously reported methods, requiring no specialized equipment, and can be completed in just 30 min. This process consistently produces 2 nm CuSe nanoparticles with a well-defined hexagonal crystal structure, which is ideal for enhancing supercapacitor electrode performance. In our study, CuSe@SP (Copper selenide supported on SuperP carbon) electrodes exhibited optimal results in TBABF₄ electrolyte, achieving low resistance, high conductivity, and elevated energy density. Furthermore, our findings demonstrate that electrolyte properties-especially ion concentration and the size of negative anions-play a critical role in determining ion transfer rates, with smaller anions significantly enhancing performance. These results not only highlight the potential of our rapid synthesis method but also contribute to a deeper fundamental understanding of electrolyte behavior in advanced supercapacitor systems. Electrolyte ; Supercapacitor ; Nanoparticle ; Electrode ; Selenide ; One-pot synthesis ; Ion ; Hexagonal crystal system Supercapacitor Materials and Fabrication ; Advancements in Battery Materials ; Copper-based nanomaterials and applications
Authors: Jeesoo Yoon | Jinwon Oh | Dongjun Kim | Pin‐Hung Chung | NaHyeon Hong | Carlos Lizandara‐Pueyo | Roel S. Sánchez‐Carrera | Jungwon Park | Hee-Tae Jung | Matteo Cargnello
Source: ChemRxiv (preprint, 2025-07-31)
Field: Chemistry — Organic Chemistry

Competitive reactivity determines size- and composition-focusing and optimized catalytic performance in multi-domain multimetallic nanocrystals Multimetallic nanocrystals (NCs) offer unique properties driven by synergistic interactions among their constituent metals. While colloidal chemistry enables control over size and composition, competing reactivities among metal precursors often complicate the synthesis of complex NCs. Here, we systematically elucidate how the competitive reactivity of different metals in solution can be exploited to synthesize uniform pentametallic NCs despite numerous competing pathways. Mechanistic studies reveal heterodimers as key intermediates that mediate further metal incorporation via selective nucleation. Remarkably, the addition of more metals suppresses homogeneous nucleation, resulting in size- and composition-focusing to produce complex NCs with distinct multimetallic domains. When supported, these NCs show excellent thermal stability and catalytic activity for ammonia decomposition, offering a promising strategy for designing complex nanomaterials for energy-related applications. Nanocrystal ; Reactivity (psychology) ; Domain (mathematical analysis) ; Catalysis ; Composition (language) ; Materials science ; Chemical engineering ; Nanotechnology ; Chemistry ; Mathematics ; Organic chemistry ; Engineering ; Medicine Nanomaterials for catalytic reactions ; Catalytic Processes in Materials Science ; Nanocluster Synthesis and Applications
Authors: A. A. El-Saady | A.A.M. Farag | Magdy A. Ibrahim | A. M. Mansour | M.M. El-Nahass | Nesma Salah | Hend S. Magar
Source: Scientific Reports (article, 2025-12-11)
Field: Chemistry — Spectroscopy

Exploring the Structural, Optical, and electrochemical behavior of semicarbazone pyranoquinoline ligand (PQMHC) and its Cu(II) complex for efficient hydrogen peroxide sensing The structural, morphological, and optical features of a newly synthesized PQMHC ligand and its Cu(II)-coordinated complex were thoroughly investigated using powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and UV-Vis diffuse reflectance spectroscopy. XRD results confirmed that the PQMHC ligand crystallizes in an orthorhombic phase (space group Imma), while the Cu(II)-PQMHC complex exhibits a monoclinic phase (space group P2₁/m), indicating successful coordination with the metal center. FE-SEM images showed vertically aligned nanofibers, with average diameters of approximately 73 nm for the ligand and 52 nm for the complex, supporting their potential in optoelectronic applications. Diffuse-reflectance UV-Vis spectroscopy coupled with Kubelka-Munk/Tauc analysis yielded optical band gaps of (2.661 and 2.460 eV in the direct transition case) and (2.305 and 1.896 eV in the indirect transition case) for PQMHC and Cu(II)-PQMHC, respectively, consistent with charge-transfer-mediated gap narrowing upon complexation. The electrochemical properties of the PQMHC ligand and its Cu(II)-PQMHC complex were investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Both the ligand and its Cu(II) complex demonstrated efficient electron transfer and rapid, linear sensitivity toward hydrogen peroxide detection within the 0.05-1000 µM range and a detection limit of 0.009 µM using the chronoamperometric (CA) technique. These enhanced electrochemical characteristics suggest their potential suitability for applications in sensors and biosensors. Ligand (biochemistry) ; Monoclinic crystal system ; Cyclic voltammetry ; Dielectric spectroscopy ; Orthorhombic crystal system ; Electrochemistry ; Hydrogen peroxide ; Analytical Chemistry (journal) Molecular Sensors and Ion Detection ; Metal complexes synthesis and properties ; Metal-Organic Frameworks: Synthesis and Applications
Authors: Hongpeng Li
Source: Highlights in Business Economics and Management (article, 2025-08-19)
Field: Materials Science — Materials Chemistry

The Basic Status and Future Development of The Hydrogen Economy As the world tackles climate change by reducing greenhouse gas emissions, hydrogen energy is believed to play a crucial role in the global shift to cleaner energy sources. Collaborative efforts across sectors are currently propelling the hydrogen energy industry to overcome obstacles and challenges, transitioning from pilot projects to widespread commercialization, thus advancing a cleaner, low-carbon, safer, and more efficient energy system. This article provides an in-depth examination at the hydrogen energy industry’s current development. We will then examine the hydrogen energy industry chain, providing an in-depth analysis at each link and its projected development. We anticipate future hydrogen energy industry trends and hope this information improves everyone’s understanding of it. Hydrogen economy ; Economics ; Hydrogen ; Hydrogen fuel ; Chemistry Hydrogen Storage and Materials ; Hybrid Renewable Energy Systems ; Spacecraft and Cryogenic Technologies
Authors: Evgeniy Dryuchkov | С. В. Борознин | И. В. Запороцкова | N. P. Boroznina | Govindhasamy Murugadoss | Shaik Gouse Peera
Source: Journal of Composites Science (article, 2025-06-19)
Field: Materials Science — Materials Chemistry

Enhanced C3H6O and CO2 Sensory Properties of Nickel Oxide-Functionalized/Carbon Nanotube Composite: A Comprehensive Theoretical Study Carbon nanotubes (CNTs) functionalized with metal oxides exhibit synergistic properties that enhance their performance across various applications, particularly in electrochemistry. Recent advancements have highlighted the potential of CNT–metal oxide heterostructures, with a specific focus on their electrochemical properties, which are pivotal for applications in sensors, supercapacitors, batteries, and catalytic systems. Among these, nickel oxide (NiO)-modified CNTs have garnered significant attention due to their cost-effectiveness, facile synthesis, and promising gas-sensing capabilities. This study employs quantum-chemical calculations within the framework of density functional theory (DFT) to elucidate the interaction mechanisms between CNTs and NiO. The results demonstrate that the adsorption process leads to the formation of stable CNT-NiO complexes, with detailed analysis of adsorption energies, equilibrium distances, and electronic structure modifications. The single-electron spectra and density of states (DOS) of the optimized complexes reveal significant alterations in the electronic properties, particularly the modulation of the energy gap induced by surface and edge functionalization. Furthermore, the interaction of CNT-NiO composites with acetone (C3H6O) and carbon dioxide (CO2) is modeled, revealing a physisorption-dominated mechanism. The adsorption of these gases induces notable changes in the electronic properties and charge distribution within the system, underscoring the potential of CNT-NiO composites for gas-sensing applications. This investigation provides a foundational understanding of the role of metal oxide modifications in tailoring the sensory activity of CNTs toward trace amounts of diverse substances, including metal atoms, inorganic molecules, and organic compounds. The findings suggest that CNT-NiO systems can serve as highly sensitive and selective sensing elements, with potential applications in medical diagnostics and environmental monitoring, thereby advancing the development of next-generation sensor technologies. Materials science ; Carbon nanotube ; Non-blocking I/O ; Physisorption ; Density functional theory ; Nanotechnology ; Oxide ; Adsorption ; Nickel oxide ; Nickel ; Electrochemistry ; Surface modification ; Chemical engineering ; Catalysis ; Chemistry ; Computational chemistry ; Electrode ; Physical chemistry ; Organic chemistry Carbon Nanotubes in Composites ; Gas Sensing Nanomaterials and Sensors ; Supercapacitor Materials and Fabrication
Authors: Kaihong Qi
Source: Science and Technology of Engineering Chemistry and Environmental Protection (article, 2025-12-19)
Field: Materials Science — Materials Chemistry

Applications and Mechanism of Nanotechnology in Metal for Corrosion Protection Utilizing the unique properties of nano-scale materials, nanotechnology has emerged as an innovative approach for combating metal corrosion. Based on a meta-analysis of current literature, this article reviews the developmental trajectory of nanotechnology in this field and categorizes its anti-corrosion mechanisms into three primary types: barrier enhancement, active inhibition, and destruction of occurrence conditions. Among these, barrier enhancement relies on physical mechanisms such as the tortuous path effect and pore blocking to passively impede the penetration of corrosive agents and reduce their diffusion rates. In contrast, active inhibition employs chemical strategies, often through stimuli-responsive nanocontainers that release corrosion inhibitors upon damage—enabling self-healing functionality either autonomously or through external control. The most proactive mechanism aims to eliminate the fundamental conditions required for corrosion, with representative examples including superhydrophobic surfaces that repel electrolytes and surface modifications that enhance chemical inertness. Each strategy is evaluated in terms of performance, durability, and practicality, while future prospects highlight the need for multi-functional integrated systems, smarter responsive coatings, improved economic viability, and environmentally sustainable designs. Mechanism (biology) ; Penetration (warfare) ; Corrosion ; Applications of nanotechnology ; Metal Corrosion Behavior and Inhibition ; Concrete Corrosion and Durability ; Surface Modification and Superhydrophobicity
Authors: Derya Güngördü Solğun
Source: Bitlis Eren Üniversitesi Fen Bilimleri Dergisi (article, 2025-09-30)
Field: Materials Science — Materials Chemistry

Synthesis and Electronic Properties of Axially Disubstituted Silicon (IV) Phthalocyanine 9-phenyl-9H-xanthene-9-oxy In this research, a new axial phthalocyanine complex compound was synthesized. This study involved the synthesis of the novel silicon phthalocyanine prepared by reacting SiPcCl2, 9-phenyl-9H-xanthen-9-ol and K2CO3 in dry toluene. The novel silicon phthalocyanine was characterized by using different spectroscopic techniques including 1H NMR, UV-Visible, FT-IR and mass spectroscopy. The electronic properties of the compound for example the aggregation and solubility parameters investigated. Aggregation is a crucial parameter dictating the functional performance of phthalocyanines. Aggregation is closely related to temperature, concentration, type of ligand attached to the phthalocyanine ring, substituents attached to peripheral positions and polarity of the solvent. Ligands attached to the phthalocyanine ring disrupt the planarity of the ring, resulting in reduced aggregation. For these reasons, in this study, we focused on the aggregation characteristics of phthalocyanines and how axial ligand modifications regulate this behavior. Axial ligand (especially those with metals like Si, Ge, Sn) coordination increases steric bulk and reduces stacking. The low aggregation tendency of phthalocyanines provides significant advantages, especially in photodynamic therapy (PDT), optoelectronics and sensor applications. Photodynamic therapy (PDT) is a light based therapeutic modality that requires the coordinated presence of three key components: a photosensitizer (PS), a light source, and molecular oxygen. Phthalocyanine based photosensitizers (Pcs) are among the most promising candidates for photodynamic therapy (PDT) due to their favorable photophysical and photochemical properties. An ideal photosensitizer should exhibit strong absorption (600–800 nm), where tissue penetration of light is optimal. Phthalocyanines meet this criterion through their intense Q band absorption, usually around 670–700 nm. Moreover, they are capable of efficiently generating singlet oxygen (ΦΔ), a key cytotoxic agent in PDT. In addition to their photodynamic efficiency, phthalocyanines demonstrate excellent chemical and photostability. Preliminary research was conducted for photosensitizer properties of the compound. After researches, the results have showed that singlet oxygen quantum yield has increased in the photodynamic study (ΦΔ=0.19) compare to the Std-SiPc (Φ∆= 0.15) Phthalocyanine ; Photosensitizer ; Photodynamic therapy ; Porphyrin ; Ligand (biochemistry) ; Silicon Porphyrin and Phthalocyanine Chemistry ; Photodynamic Therapy Research Studies ; Photosynthetic Processes and Mechanisms
Authors: Guanwu Lian | Zuliang Du | Yifan Wang | Ye-Lan Xiao | Mengyao Su | Chao Wu | Yucong Huang | Yuansheng Lin | Jingjing Xiong | Yichen Chen | Shibo Xi | Wenguang Tu | Zhigang Zou | Zhongxin Chen
Source: Aggregate (article, 2025-05-19)
Field: Materials Science — Materials Chemistry

Solid‐Phase Upcycling Toward the Production of Ultrahigh‐Loading Single‐Atom Catalysts ABSTRACT The recovery of valuable transition metals from deactivated catalysts is crucial for alleviating the challenges of resource scarcity and environmental pollution. Guided by AI‐powered big data analysis, we identified an important research gap in the sustainable recovery of early transition metals and proposed a solid‐phase upcycling strategy to transform waste catalysts into highly valuable single‐atom catalysts (SACs). This involves a heat‐induced redispersion of metal aggregates into single atoms on the polycrystalline carbon nitride (PCN) support, producing highly active M 1 ‐PCN SACs up to 20 wt% (M = Cu, Fe, Co, and Ni). Subsequent techno‐economic analysis confirms a two‐thirds reduction in production cost and greenhouse gas emissions compared to conventional hydrometallurgical and pyrometallurgical processes, thus paving a new path in the development of sustainable technologies for metal recovery. Catalysis ; Materials science ; Atom (system on chip) ; Phase (matter) ; Production (economics) ; Chemical engineering ; Chemistry ; Computer science ; Organic chemistry ; Engineering ; Embedded system Catalytic Processes in Materials Science ; Nanomaterials for catalytic reactions ; Catalysis and Hydrodesulfurization Studies