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Molecules, Vol. 28, Pages 6554: In2S3@TiO2/In2S3 Z-Scheme Heterojunction with Synergistic Effect for Enhanced Photocathodic Protection of Steel
angli Cao
In this work, a TiO2/In2S3 heterojunction film was successfully synthesized using a one-step hydrothermal method and applied in the photocathodic protection (PCP) of 304SS. The octahedral In2S3 and In2S3@TiO2 nanoparticles combined and coexisted with each other, with In2S3 quantum dots growing on the surface of TiO2 to form In2S3@TiO2 with a wrapping structure. The composite photoelectrode, which includes TiO2 with a mixed crystalline phase and In2S3, exhibited significantly enhanced PCP performance for 304SS compared with pure In2S3 and TiO2. The In2S3@TiO2/In2S3 composites with 0.3 g of P25 titanium dioxide...
Source: Molecules - September 10, 2023 Category: Chemistry Authors: Yue Chang Kaili Suo Yuhang Wang Xiaona Ren Jiangli Cao Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6551: Ordered Mesoporous Carbons with Well-Dispersed Nickel or Platinum Nanoparticles for Room Temperature Hydrogen Adsorption
aroniec
A facile mechanochemical method was used for the synthesis of ordered mesoporous carbons (OMCs) with well-dispersed metal nanoparticles. The one-pot ball milling of tannins with a metal salt in the presence of a block copolymer followed by thermal treatment led to Ni- or Pt-embedded OMCs with high specific surface areas (up to 600 m2·g−1) and large pore volumes (up to ~0.5 cm3·g−1). The as-prepared OMC-based samples exhibited hexagonally ordered cylindrical mesopores with narrow pore size distributions (average pore size ~7 nm), which implies sufficient ...
Source: Molecules - September 10, 2023 Category: Chemistry Authors: Barbara Szcz ęśniak Sylwia G łowniak Jakub Wo źniak Stanis ław Popiel Jerzy Choma Mietek Jaroniec Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6547: Antioxidant and Antibacterial Activity of Mexican Oregano Essential Oil, Extracted from Plants Occurring Naturally in Semiarid Areas and Cultivated in the Field and Greenhouse in Northern Mexico
The objective was to compare the antioxidant and antibacterial activity of Mexican oregano essential oil obtained from plants occurring naturally in semiarid areas (Wild1 and Wild2), and those cultivated in the field (CField) and greenhouse (CGreenhouse) in northern Mexico. The Mexican oregano essential oil extraction was performed using the hydrodistillation method, the antioxidant activity was determined using the ABTS method, and the antibacterial activity was assessed through bioassays under the microwell method at nine different concentrations. The aim was to determine the diameter of the inhibition zone and, conseque...
Source: Molecules - September 9, 2023 Category: Chemistry Authors: Ruben I. Marin-Tinoco Angie Tatiana Ortega-Ram írez Maricela Esteban-Mendez Oscar Silva-Marrufo Laura E. Barragan-Ledesma Luis M. Valenzuela-N úñez Edwin A. Brice ño-Contreras Maria A. Sari ñana-Navarrete Abelardo Camacho-Luis Cayetano Navarrete-Moli Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6530: The Competition between 4-Nitrophenol Reduction and BH4 & minus; Hydrolysis on Metal Nanoparticle Catalysts
Molecules, Vol. 28, Pages 6530: The Competition between 4-Nitrophenol Reduction and BH4− Hydrolysis on Metal Nanoparticle Catalysts
Molecules doi: 10.3390/molecules28186530
Authors:
Shalaka Varshney
Dan Meyerstein
Ronen Bar-Ziv
Tomer Zidki
Assessing competitive environmental catalytic reduction processes via NaBH4 is essential, as BH4− is both an energy carrier (as H2) and a reducing agent. A comprehensive catalytic study of the competition between the borohydride hydrolysis reaction (BHR, releasing H2) and 4-nitrophenol reduction via BH4− on M0- and M/M′ (a...
Source: Molecules - September 8, 2023 Category: Chemistry Authors: Shalaka Varshney Dan Meyerstein Ronen Bar-Ziv Tomer Zidki Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6527: Development of a Colorimetric Paper Sensor for Hg2+ Detection in Water Using Cyanuric Acid-Conjugated Gold Nanoparticles
A. Dhumale
Hg2+ is one of the most dangerous pollutants that can cause damage to organs and the immune system. The common detection methods of Hg2+ require sophisticated instrumentation and a long time for analysis. The purpose of this study was to develop a sensor for the detection of Hg2+ using filter paper immobilized by gold nanoparticles (AuNPs) conjugated with cyanuric acid (CA). The clear color change from pink to bluish purple is the response of the CA-AuNPs filter paper sensor to exposure to Hg2+. Detection can be observed visually with the naked eye and/or with imageJ software; the detection limit is 0.05 &a...
Source: Molecules - September 8, 2023 Category: Chemistry Authors: Febrina Amelia Saputri Eka Ulya Zubaidah Amaranggani Wikan Puspita Kenanga Catur Jatmika Rimadani Pratiwi Vinayak A. Dhumale Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6504: Synthesis, Characterization, and Biological Properties of Iron Oxide Nanoparticles Synthesized from Apis mellifera Honey
May Nasser Bin Jumah
Green approaches for nanoparticle synthesis have emerged as biocompatible, economical, and environment-friendly alternatives to counteract the menace of microbial drug resistance. Recently, the utilization of honey as a green source to synthesize Fe2O3-NPs has been introduced, but its antibacterial activity against one of the opportunistic MDR pathogens, Klebsiella pneumoniae, has not been explored. Therefore, this study employed Apis mellifera honey as a reducing and capping agent for the synthesis of iron oxide nanoparticles (Fe2O3-NPs). Subsequent to the characterization of nanoparticles, their...
Source: Molecules - September 7, 2023 Category: Chemistry Authors: Hamna Shahid Aqeel Ahmed Shah Syed Nizam Uddin Shah Bukhari Anjum Zehra Naqvi Iqra Arooj Mehvish Javeed Muhammad Aslam Ali Dad Chandio Muhammad Farooq Sadaf Jamal Gilani May Nasser Bin Jumah Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6499: Magnetic Adsorbent Fe3O4/ZnO/LC for the Removal of Tetracycline and Congo Red from Aqueous Solution
In this study, the ZIF-8 was successfully loaded onto lignocellulose (LC) to further produce ZnO/LC by in situ growth method and hydrothermal treatment, and then Fe3O4 nanoparticles (Fe3O4 NPs) were loaded onto ZnO/LC to prepare magnetic Fe3O4/ZnO/LC adsorbent for removing tetracycline (TC) and congo red (CR) pollutants from aqueous solution. The adsorption properties of the adsorbent were systematically analyzed for different conditions, such as adsorbent dosage, solution pH, contact time, temperature and initial concentration. The experimental data were fitted using adsorption kinetic and isotherm models. The results sho...
Source: Molecules - September 7, 2023 Category: Chemistry Authors: Anjiu Zhao Qi Tang Yuanlong Chen Chongpeng Qiu Xingyan Huang Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6481: Surface Modification of ZnO with Sn(IV)-Porphyrin for Enhanced Visible Light Photocatalytic Degradation of Amaranth Dye
This study is valuable for the development of highly effective composite photocatalytic systems in advanced oxidation processes and is of importance for the treatment of wastewater containing dyes.
Source: Molecules - September 7, 2023 Category: Chemistry Authors: Nirmal Kumar Shee Hee-Joon Kim Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6464: Bismuth-Antimony Alloy Nanoparticles Embedded in 3D Hierarchical Porous Carbon Skeleton Film for Superior Sodium Storage
Weiwei Yan
A composite film that features bismuth–antimony alloy nanoparticles uniformly embedded in a 3D hierarchical porous carbon skeleton is synthesized by the polyacrylonitrile-spreading method. The dissolved polystyrene is used as a soft template. The average diameter of the bismuth–antimony alloy nanoparticles is ~34.5 nm. The content of the Bi-Sb alloy has an impact on the electrochemical performance of the composite film. When the content of the bismuth–antimony alloy is 45.27%, the reversible capacity and cycling stability of the composite film are the best. Importan...
Source: Molecules - September 6, 2023 Category: Chemistry Authors: Jiafan Wang Yonghui Lin Wei Lv Yongfeng Yuan Shaoyi Guo Weiwei Yan Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6441: Nanoparticles Carrying Conserved Regions of Influenza A Hemagglutinin, Nucleoprotein, and M2 Protein Elicit a Strong Humoral and T Cell Immune Response and Protect Animals from Infection
In this study, we obtained recombinant virus-like particles formed by an artificial self-assembling peptide (SAP) carrying two epitopes from NP, tandem copies of M2e and HA2 peptides, along with a T helper Pan DR-binding epitope (PADRE). Fusion proteins expressed in Escherichia coli self-assembled in vitro into spherical particles with a size of 15–35 nm. Immunization of mice with these particles induced strong humoral immune response against M2e and the entire virus, and lead to the formation of cytokine-secreting antigen-specific CD4+ and CD8+ effector memory T cells. Immunization provided high protection o...
Source: Molecules - September 5, 2023 Category: Chemistry Authors: Anna A. Zykova Elena A. Blokhina Liudmila A. Stepanova Marina A. Shuklina Olga O. Ozhereleva Liudmila M. Tsybalova Victor V. Kuprianov Nikolai V. Ravin Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6424: Green Synthesis of Silver Nanoparticles Derived from Papaver rhoeas L. Leaf Extract: Cytotoxic and Antimicrobial Properties
Beylerli
In the last few decades, the search for metal nanoparticles as an alternative to cancer treatments and antibiotics has increased. In this article, the spectroscopic (ultraviolet–visible (UV-vis), electron-dispersing X-ray (EDX), and Fourier transform infrared (FT-IR)), microscopic (field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), and atomic force microscope (AFM)), structural (X-ray diffractometer (XRD) and zetasizer), and analytic (thermogravimetric/differential thermal analyzer (TGA-DTA)) characterization of the silver nanoparticles (AgNPs) produced...
Source: Molecules - September 4, 2023 Category: Chemistry Authors: Polat İpek Re şit Yıldız Mehmet F ırat Baran Abdulkerim Hatipo ğlu Ay şe Baran Albert Sufianov Ozal Beylerli Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6431: Exploring the Biomedical Applications of Biosynthesized Silver Nanoparticles Using Perilla frutescens Flavonoid Extract: Antibacterial, Antioxidant, and Cell Toxicity Properties against Colon Cancer Cells
In this study, we also explained the plausible mechanisms of the biosynthesis, anticancer, and antibacterial effects of PFFE-AgNPs. Overall, these findings suggest that PFFE-AgNPs have potential as a multi-functional nanomaterial for biomedical applications, particularly in cancer therapy and infection control. However, it is important to note that further research is needed to determine the safety and efficacy of these nanoparticles in vivo, as well as to explore their potential in other areas of medicine.
Source: Molecules - September 4, 2023 Category: Chemistry Authors: Tianyu Hou Yurong Guo Wanyu Han Yang Zhou Vasudeva Reddy Netala Huizhen Li He Li Zhijun Zhang Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6412: The Synergistic Effect in CdS/g-C3N4 Nanoheterojunctions Improves Visible Light Photocatalytic Performance for Hydrogen Evolution Reactions
This study focuses on the development of heterojunction photocatalysts for the efficient utilization of solar energy to address the energy crisis and reduce environmental pollution. Cadmium sulfide (CdS)/graphite-type carbon nitride (g-C3N4) nanocomposites were synthesized using a hydrothermal method, and their photoelectrochemical properties and photocatalytic performance for hydrogen evolution reaction (HER) were characterized. Scanning electron microscope images showed the intimate interface and caviar-like nanoheterojunction of the CdS nanoparticles on g-C3N4 nanospheres, suggesting their potential involvement in the p...
Source: Molecules - September 3, 2023 Category: Chemistry Authors: Yu Niu Jinni Shen Wenqin Guo Xiaoyan Zhu Lanlan Guo Yueqi Wang Fuying Li Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6372: Electrochemical Determination of 17- & beta;-Estradiol Using a Glassy Carbon Electrode Modified with & alpha;-Fe2O3 Nanoparticles Supported on Carbon Nanotubes
In this study, a novel electrochemical assay for determining 17-β-estradiol (E2) was proposed. The approach involves modifying a glassy carbon electrode (GCE) with a nanocomposite consisting of α-Fe2O3 nanoparticles supported on carbon nanotubes (CNTs)—denoted as α-Fe2O3-CNT/GCE. The synthesis of the α-Fe2O3-CNT nanocomposite was achieved through a simple and cost-effective hydrothermal process. Morphological and chemical characterization were conducted using scanning electron microscopy (SEM), Raman spectroscopy, and energy-dispersive X-ray spectroscopy ...
Source: Molecules - August 31, 2023 Category: Chemistry Authors: Juliana Costa Rolim Galv ão Mayara da Silva Araujo Maiyara Carolyne Prete Vanildo Le ão Neto Luiz Henrique Dall ’Antonia Roberto Matos Cesar Ricardo Texeira Tarley Roberta Antigo Medeiros Tags: Article Source Type: research
Molecules, Vol. 28, Pages 6364: Multifunctional Spirogyra-hyalina-Mediated Barium Oxide Nanoparticles (BaONPs): Synthesis and Applications
In conclusion, the biomolecules derived from Spirogyra hyalina have demonstrated remarkable ability to generate stable nanoparticles, offering promising prospects for their utilization as therapeutic agents and coating materials in various biomedical applications.
Source: Molecules - August 31, 2023 Category: Chemistry Authors: Abdullah Anees ur Rahman Shah Faisal Mervt M. Almostafa Nancy S. Younis Galal Yahya Tags: Article Source Type: research
