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Molecules, Vol. 28, Pages 3266: Properties of Naked Silver Clusters with Up to 100 Atoms as Found with Embedded-Atom and Density-Functional Calculations
Springborg The structural and energetic properties of small silver clusters Agn with n = 2–100 atoms are reported. For n = 2–100 the embedded atom model for the calculation of the total energy of a given structure in combination with the basin-hopping search strategy for an unbiased structure optimization has been used to identify the energies and structures of the three energetically lowest-lying isomers. These optimized structures for n = 2–11 were subsequently studied further through density-functional-theory calculations. These calculations provide additional information o...
Source: Molecules - April 6, 2023 Category: Chemistry Authors: Shivangi Garg Navjot Kaur Neetu Goel Mohammad Molayem Valeri G. Grigoryan Michael Springborg Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3242: Conductive Polymer Nanoparticles as Solid Contact in Ion-Selective Electrodes Sensitive to Potassium Ions
n Zhang A preparation method of nanocomposites based on poly (3-octylthiophene-2,5-diyl) (POT) and carbon black (CB) as the transducer of an all-solid potassium ion selective electrode is proposed. POT is used as the dispersant of CB, and the obtained nanocomposites have unique characteristics, including high conductivity, high capacitance and high stability. The potassium ion selective electrode based on POT and CB was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronopotentiometry. The results showed that the detection limit of potassium ions was 10−6.2 M, ...
Source: Molecules - April 5, 2023 Category: Chemistry Authors: Hui Bao Jin Ye Xuyan Zhao Yuan Zhang Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3240: Biosynthesis of Gold and Silver Nanoparticles Using Phytochemical Compounds
sanah Gold and silver nanoparticles are nanoparticles that have been widely used in various fields and have shown good benefits. The method of nanoparticle biosynthesis utilizing plant extracts, also known as green synthesis, has become a promising method considering the advantages it has compared to other synthesis methods. This review aims to give an overview of the phytochemical compounds in plants used in the synthesis of gold and silver nanoparticles, the nanoparticle properties produced using plant extracts based on the concentration and structure of phytochemical compounds, and their applications. Phytochemical ...
Source: Molecules - April 5, 2023 Category: Chemistry Authors: Ade Zuhrotun Dede Jihan Oktaviani Aliya Nur Hasanah Tags: Review Source Type: research

Molecules, Vol. 28, Pages 3241: Silver Nanoparticles Loaded on Chitosan-g-PVA Hydrogel for the Wound-Healing Applications
Alduraywish Silver nanoparticle composites have abundant biomedical applications due to their unique antibacterial properties. In the current work, green tea leaf extract was used as a natural reducing agent to synthesize AgNPs (AgNPs) using microwave irradiation technology. Furthermore, microwave irradiation has been used for the preparation of AgNPs/chitosan (Ch) grafted polyvinyl alcohol (PVA) hydrogel samples. To approve the accomplishment of AgNPs hydrogel polymer, UV-spectrum, TEM, and FT-IR spectrum analyses and the release of silver ions, actions were taken. The wound-healing ability of the prepared hydrogel sa...
Source: Molecules - April 5, 2023 Category: Chemistry Authors: Fahad M. Aldakheel Dalia Mohsen Marwa M. El Sayed Khaled Ali Alawam AbdulKarim S. Binshaya Shatha A. Alduraywish Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3215: The Use of Infrared Spectroscopy for the Quantification of Bioactive Compounds in Food: A Review
f Ameer Infrared spectroscopy (wavelengths ranging from 750–25,000 nm) offers a rapid means of assessing the chemical composition of a wide range of sample types, both for qualitative and quantitative analyses. Its use in the food industry has increased significantly over the past five decades and it is now an accepted analytical technique for the routine analysis of certain analytes. Furthermore, it is commonly used for routine screening and quality control purposes in numerous industry settings, albeit not typically for the analysis of bioactive compounds. Using the Scopus database, a systematic search ...
Source: Molecules - April 4, 2023 Category: Chemistry Authors: Joel B. Johnson Kerry B. Walsh Mani Naiker Kashif Ameer Tags: Review Source Type: research

Molecules, Vol. 28, Pages 3230: Ppb-Level Hydrogen Sulfide Gas Sensor Based on the Nanocomposite of MoS2 Octahedron/ZnO-Zn2SnO4 Nanoparticles
In this study, a series of nanocomposites based on MoS2 octahedrons and ZnO-Zn2SnO4 nanoparticles were synthesized through the hydrothermal method. Various characterizations such as X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectrum (XPS) have been used to verify the crystal phase, morphology and composition of synthesized nanocomposites. Three gas sensors based on the nanocomposites of pure ZnO-Zn2SnO4 (MS-ZNO-0), 5 wt% MoS2-ZnO-Zn2SnO4 (MS-...
Source: Molecules - April 4, 2023 Category: Chemistry Authors: Wu Akhtar Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3228: Therapeutic Potential of Albumin Nanoparticles Encapsulated Visnagin in MDA-MB-468 Triple-Negative Breast Cancer Cells
iah Pooi Ling Mok Breast cancer is among the most recurrent malignancies, and its prevalence is rising. With only a few treatment options available, there is an immediate need to search for better alternatives. In this regard, nanotechnology has been applied to develop potential chemotherapeutic techniques, particularly for cancer therapy. Specifically, albumin-based nanoparticles are a developing platform for the administration of diverse chemotherapy drugs owing to their biocompatibility and non-toxicity. Visnagin, a naturally derived furanochromone, treats cancers, epilepsy, angina, coughs, and inflammatory illnes...
Source: Molecules - April 4, 2023 Category: Chemistry Authors: Abdullah Alsrhani Abozer Y. Elderdery Badr Alzahrani Nasser A. N. Alzerwi Maryam Musleh Althobiti Musaed Rayzah Bandar Idrees Ahmed M. E. Elkhalifa Suresh K. Subbiah Pooi Ling Mok Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3175: Study on the Controllable Preparation of Nd3+ Doped in Fe3O4 Nanoparticles for Magnetic Protective Fabrics
Xinqun Feng Magnetic protective fabrics with fine wearability and great protective properties are highly desirable for aerospace, national defense, and wearable protective applications. The study of the controllable preparation method of Nd3+ doped in Fe3O4 nanoparticles with supposed magnetic properties remains a challenge. The characterization of the microstructure, elemental composition, and magnetic properties of NdFe2O4 nanoparticles was verified. Then, the surface of NdFe2O4 was treated with glyceric acid to provide sufficient –OH. Subsequently, the connection of the nanoparticle by the succinimid...
Source: Molecules - April 3, 2023 Category: Chemistry Authors: Xiaolei Song Congzhu Xu Wendong Yao Jieyun Wen Qufu Wei Yonggui Li Xinqun Feng Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3190: Physicochemical and Antibacterial Evaluation of TiO2/CNT Mesoporous Nanomaterials Prepared by High-Pressure Hydrothermal Sol & ndash;Gel Method under an Ultrasonic Composite Environment
Molecules, Vol. 28, Pages 3190: Physicochemical and Antibacterial Evaluation of TiO2/CNT Mesoporous Nanomaterials Prepared by High-Pressure Hydrothermal Sol–Gel Method under an Ultrasonic Composite Environment Molecules doi: 10.3390/molecules28073190 Authors: Huansheng Lai Zilong Zhao Wenhe Yu Yuan Lin Zhiyuan Feng TiO2 has attracted significant research interest, principally due to its nontoxicity, high stability, and abundance. Carbon-doped TiO2 can improve light absorption efficiency. In order to prepare high-efficiency photocatalysts, carbon-doped composites were prepared by hydrothermal react...
Source: Molecules - April 3, 2023 Category: Chemistry Authors: Huansheng Lai Zilong Zhao Wenhe Yu Yuan Lin Zhiyuan Feng Tags: Communication Source Type: research

Molecules, Vol. 28, Pages 3167: Fabrication of Ternary MoS2/CdS/Bi2S3-Based Nano Composites for Photocatalytic Dye Degradation
We report the fabrication of MoS2/CdS nanoparticles functionalized with Bi2S3 nanoflakes. The ternary composites of “MoS2/CdS/Bi2S3” were synthesized in situ by a hydrothermal method at different temperatures. The changes in structural, optical, and morphological properties of the synthesized CdS/MoS2/Bi2S3 were explored. The effects of Bi2S3 on CdS/MoS2 were thoroughly studied by performing an X-ray diffractometer (XRD), a scanning electron microscope (SEM), an ultra-violet–visible spectrometer (Uv–vis), and Fourier transform infrared spectroscopic (FT-IR) studies of...
Source: Molecules - April 2, 2023 Category: Chemistry Authors: Asif Nazir Muhammad Suleman Tahir Ghulam Mustafa Kamal Xu Zhang Muhammad Bilal Tahir Bin Jiang Muhammad Safdar Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3154: Fabrication of Naturally Derived Chitosan and Ilmenite Sand-Based TiO2/Fe2O3/Fe-N-Doped Graphitic Carbon Composite for Photocatalytic Degradation of Methylene Blue under Sunlight
Vigneswaran Fabrication of chitosan and ilmenite sand-based novel photocatalysts through the catalytic graphitization of chitosan is reported. Nanocomposites consisted of TiO2, Fe2O3 and Fe nanoparticles dispersed on a nitrogen-doped graphitic carbon framework. The surface area, pore volume and macropore structure of the carbon matrix is disturbed by the heterogeneously distributed nanoparticles. The extent of graphitization expanded with increasing metal loading as indicated by variation in the ID/IG ratio. The nanomaterial’s surface consists of Fe3+ and Ti4+, and graphitic, pyridinic and pyrrolic nitrog...
Source: Molecules - April 1, 2023 Category: Chemistry Authors: Amavin Mendis Charitha Thambiliyagodage Geethma Ekanayake Heshan Liyanaarachchi Madara Jayanetti Saravanamuthu Vigneswaran Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3145: Polycaprolactone-Modified Biochar Supported Nanoscale Zero-Valent Iron Coupling with Shewanella putrefaciens CN32 for 1,1,1-Trichloroethane Removal from Simulated Groundwater: Synthesis, Optimization, and Mechanism
In conclusion, the nZVI@PBC composite coupling with CN32 can be a potential technique to apply for 1,1,1-TCA removal in groundwater.
Source: Molecules - March 31, 2023 Category: Chemistry Authors: Jing Ye Yacen Mao Liang Meng Junjie Li Xilin Li Lishan Xiao Ying Zhang Fenghua Wang Huan Deng Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3086: Metal Oxides Nanoparticles: General Structural Description, Chemical, Physical, and Biological Synthesis Methods, Role in Pesticides and Heavy Metal Removal through Wastewater Treatment
i Nanotechnology (NT) is now firmly established in both the private home and commercial markets. Due to its unique properties, NT has been fully applied within multiple sectors like pharmacy and medicine, as well as industries like chemical, electrical, food manufacturing, and military, besides other economic sectors. With the growing demand for environmental resources from an ever-growing world population, NT application is a very advanced new area in the environmental sector and offers several advantages. A novel template synthesis approach is being used for the promising metal oxide nanostructures preparation. Synth...
Source: Molecules - March 30, 2023 Category: Chemistry Authors: Zahrah Alhalili Tags: Review Source Type: research

Molecules, Vol. 28, Pages 3075: Characterization of the Volatile Profiles of Insect Flours by (HS)-SPME/GC-MS: A Preliminary Study
chivio The growing world population, combined with scarcities of agricultural land, water, forest, fisheries, and biodiversity resources, makes it necessary to search for alternative sources of nutrients. For this reason, in recent years, edible insects have been introduced into the diet, even in areas where entomophagy is not traditional. In light of this, the present study aims at characterizing the aromatic profile of three edible insects flours: cricket (Acheta domesticus, CP), buffalo worm (Alphitobius diaperinus, BW), and mealworm (Tenebrio molitor, MW). This goal has been achieved by means of an (HS)-SPME/GC-MS ...
Source: Molecules - March 30, 2023 Category: Chemistry Authors: Samantha Reale Alessandra Biancolillo Martina Foschi Angelo Antonio D ’Archivio Tags: Article Source Type: research

Molecules, Vol. 28, Pages 3060: Biosynthesis of Nanoparticles Using Plant Extracts and Essential Oils
amed Bououdina Plant extracts and essential oils have a wide variety of molecules with potential application in different fields such as medicine, the food industry, and cosmetics. Furthermore, these plant derivatives are widely interested in human and animal health, including potent antitumor, antifungal, anti-inflammatory, and bactericidal activity. Given this diversity, different methodologies were needed to optimize the extraction, purification, and characterization of each class of biomolecules. In addition, these plant products can still be used in the synthesis of nanomaterials to reduce the undesirable effects ...
Source: Molecules - March 29, 2023 Category: Chemistry Authors: S érgio Antunes Filho Mayara Santana dos Santos Ot ávio Augusto L. dos Santos Bianca Pizzorno Backx Maria-Loredana Soran Ocsana Opri ş Ildiko Lung Adina Stegarescu Mohamed Bououdina Tags: Review Source Type: research