Article
Biochemical Research Methods
Li Chen, Donghao Liu, Limin Zheng, Simin Yi, Hua He
Summary: By constructing a structure-dependent ratiometric fluorescence sensor with B-CQDs and MOF-76, the sensor demonstrated high sensitivity and excellent selectivity for DPA detection, with a detection limit of 3.05 μM. The distinctive fluorescent responses of B-CQDs and MOF-76 to DPA played a key role in the sensor's performance.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ghader Hootifard, Enayatollah Sheikhhosseini, Sayed Ali Ahmadi, Mahdieh Yahyazadehfar
Summary: Various pyrano[2,3-d]pyrimidines were synthesized via tandem Knoevenagel-Michael cyclocondensation pathway in an environmentally friendly reactive medium using aldehydes, malononitrile, and acidic C-H compounds such as barbituric acid. The reaction was facilitated by a recoverable nanocomposite consisting of Fe3O4 nanoparticles placed on an organometallic framework. The synthesized Fe3O4@iron-based metal-organic framework nanocomposite was characterized using various analytical techniques.
FRONTIERS IN CHEMISTRY
(2023)
Article
Chemistry, Analytical
Abbas Hassan Oghli, Ahmad Soleymanpour
Summary: A cost-effective method for the simultaneous determination of mercury, copper, and cadmium ions using a pencil graphite electrode modified with poly-L-cysteine and Fe3O4 nanoparticles was developed. The method optimized various parameters to enhance sensitivity and investigated the stability and reproducibility of the modified electrode. The modified electrode was successfully applied to determine mercury, copper, and cadmium in real samples.
Article
Chemistry, Physical
P. T. P. Ryan, D. J. Payne, T-L Lee, D. A. Duncan
Summary: By using chemically specific techniques, the dissociative adsorption of formic acid on the Fe3O4(001) surface was investigated, revealing the adsorbed structures and the role of surface hydroxyl species. The findings confirmed previous observations and highlighted the significant role of surface hydroxyl in the termination of the Fe3O4(001) surface.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Electrochemistry
Lara Fernandes Loguercio, Anderson Thesing, Bruno da Silveira Noremberg, Bruno Vasconcellos Lopes, Guilherme Kurz Maron, Giovanna Machado, Michael A. Pope, Neftali Lenin Villarreal Carreno
Summary: In this study, an efficient, low-cost and easy-to-handle non-enzymatic electrochemical sensor was fabricated using a high-throughput CO2 laser-scribing process. The sensor showed good reproducibility and detection limit for the determination of ascorbic acid levels.
Article
Biophysics
Fatemeh Ghanbari Adivi, Payman Hashemi
Summary: A three-step process was developed for the synthesis of magnetic iron oxide nanoparticles coated with agarose, their functionalization with iminodiacetic acid (IDA), and layering with a silica shell. Ion mobility spectrometry (IMS) was successfully used for the ultrafast and interference free determination of histamine in serum samples. The Freundlich model was found to be more applicable for interpreting histamine adsorption on the nanoparticles, which could remove up to 92% of histamine from human serum samples.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Melih Besir Arvas, Sibel Yazar, Yucel Sahin
Summary: In this study, well-designed porous polypyrrole/dicarboxylic acid electrodes were successfully synthesized by hydrothermal method. The structural properties and performance of the synthesized electrodes were characterized by various techniques, and the results showed their potential as high-performance supercapacitor devices with high specific capacity, energy density, good cycling performance, and wide operating voltage range.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Tingrun Lai, Hui Shu, Xu Tian, Jie Ren, Xiuxiu Cui, Huiping Bai, Xuechun C. Xiao, Yude D. Wang
Summary: Erythromycin is often used as an antibiotic in animal husbandry, but excessive use can lead to residues entering the human body through consumption, causing health damage. Developing a fast and precise quantitative detection method for erythromycin is essential. In this study, a molecularly imprinted polymer film was electro-polymerized on an electrode surface, using arginine as a functional monomer and erythromycin as a template molecule, for quantitative monitoring of erythromycin.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Analytical
Preeyanut Butmee, Jittra Mala, Chulalak Damphathik, Kanjana Kunpatee, Gamolwan Tumcharern, Margaret Kerr, Eda Mehmeti, Georg Raber, Kurt Kalcher, Anchalee Samphao
Summary: The sensor utilizes the specific binding of thiol group with Hg2+ and detects Hg2+ concentration by differential pulse anodic stripping voltammetry. The detection limit is 0.5 μg/L, with a wide linear range and results consistent with the standard method.
Article
Engineering, Electrical & Electronic
Tingrun Lai, Hui Shu, Xu Tian, Jie Ren, Xiuxiu Cui, Huiping Bai, Xuechun C. Xiao, Yude D. Wang
Summary: In this study, erythromycin is quantitatively detected using an electrochemical sensor with a molecularly imprinted polymer film on a glassy carbon electrode. The sensor shows satisfactory selectivity, reproducibility, and stability, making it potential for the measurement of erythromycin in food and agro-products.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Analytical
Pwadubashiyi C. Pwavodi, Vasfiye H. Ozyurt, Suleyman Asir, Mehmet Ozsoz
Summary: A sensitive electrochemical sensor was developed using a carbon paste electrode modified with Fe3O4 nanoparticles for the determination of sinapic acid, syringic acid, and rutin, showing excellent sensitivity and performance.
Article
Polymer Science
Mingliang Zhang, Lin Zhang, Zhihui Wu, Ao Ding, Chunhui Shen, Shanjun Gao
Summary: AAEMs based on PPO with piperidinium group-containing multi-cation side chains were successfully fabricated, showing higher hydroxide conductivity and lower conductivity loss compared to traditional AAEMs. These membranes have the potential to be utilized in fuel cells due to their excellent properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Engineering, Chemical
Rongqiang Liao, Dexi Jiang, Ying Liu, Pin Lv
Summary: In this study, poly(e-lysine)-cyclodextrin coated Fe3O4 nanoparticles (PL-CD@Fe3O4) were successfully prepared and their selective separation performance for natural medicine scutellarin was investigated. The experimental results showed that the nanoparticles had good stability and strong adsorption capacity, leading to increased purity of scutellarin during the separation process.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Anna Michalicha, Anna Tomaszewska, Vladyslav Vivcharenko, Barbara Budzynska, Magdalena Kulpa-Greszta, Dominika Fila, Robert Pazik, Anna Belcarz
Summary: In recent years, there has been an increased interest in using curdlan, a naturally derived polymer, for medical applications. However, it requires additives to enhance its biomedical potential, such as antibacterial compounds, magnetic particles, or hemostatic agents. This article presents the production and characterization of hydrogels based on curdlan enriched with Fe3O4 nanoparticles or Fe3O4-based heterostructures and poly(L-DOPA). These hydrogels show great potential in regenerative processes and oncology therapies, but the presence of poly(L-DOPA) may affect the release of nanoparticles and the hemolytic properties of the hydrogel.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Meng Z. Chen, Che Y. Chu, Bradley W. Mansel, Po C. Chang
Summary: This study investigated the dependence of nanoparticle dispersion in nanocomposites on zero-conversion initiator efficiency. Higher efficiency led to network structures, while lower efficiency resulted in small aggregates. Moderate efficiency produced large aggregates.
