Controlling Size Distribution of Silver Nanoparticles using Natural Reducing Agents in MCM‐41@Ag

This work examines the physical and chemical interactions between the polar and nonpolar solvents and the surface of the MCM‐41 material, which serves as the isolating layer, employing sensing capacitance‐voltage measurements with a Metal‐Insulator‐Semiconductor (MIS) capacitor. It was observed that the MCM‐41 surface is more sensitive to methanol, which is a protic solvent, than to other nonpolar solvents like chloroform, according to the data. Furthermore, by analyzing the interaction of the methanol with the surface of MCM‐41 as a function of the applied field, the electron transfer, and the orientation of the solvent molecule, DFT Calculations using the Siesta simulation software enable us to assess this sensitivity. Based on the performance of MCM‐41 as the insulator in the MIS capacitor, MCM‐41 has a strong potential for the creation of high‐sensitivity sensors for solvent detection avoiding the functionalization process.

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Physical and Chemical Interactions of the Polar and Nonpolar Solvents on the Mesoporous Silica Material to Developing Solvent Sensors.

Panecatl‐Bernal

Alvarado

Ortiz‐Medina

et al. 2023

ChemistrySelect

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Influence of Baccharis salicifolia Extract on Iron Oxide Nanoparticles in MCM-41@IONP and Its Application in Room-Temperature-Fabricated Metal–Insulator–Semiconductor Diodes

Bravo de Luciano,

Soto-Cruz,

Romero-López

et al. 2024

Applied Nano

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This work presents the green synthesis of iron oxide nanoparticles (IONPs) using Baccharis salicifolia extract and their incorporation in mesoporous silica MCM-41, obtaining an MCM-41@IONP composite. The MCM-41@IONP composite was characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), nitrogen adsorption and desorption, scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The use of the natural reducing agent Baccharis salicifolia resulted in nanoparticles with an average size of 31 nm. Furthermore, we showcase the application of the MCM-41@IONP nanocomposite in a metal–insulator–semiconductor (MIS) diode, which was fabricated at room temperature. The current–voltage and capacitance–voltage curves of the MIS diode were carefully measured and subjected to detailed analysis. The results demonstrate the potential utility of MCM-41@IONP nanocomposite-based MIS diodes, suggesting their applicability in the design of biosensors or as discrete components in electronic devices.

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Cellulose-Based Metallogels—Part 1: Raw Materials and Preparation

Михаилиди

Volf

Belosinschi

et al. 2023

Gels

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Metallogels are a class of materials produced by the complexation of polymer gels with metal ions that can form coordination bonds with the functional groups of the gel. Hydrogels with metal phases attract special attention due to the numerous possibilities for functionalization. Cellulose is preferable for the production of hydrogels from economic, ecological, physical, chemical, and biological points of view since it is inexpensive, renewable, versatile, non-toxic, reveals high mechanical and thermal stability, has a porous structure, an imposing number of reactive OH groups, and good biocompatibility. Due to the poor solubility of natural cellulose, the hydrogels are commonly produced from cellulose derivatives that require multiple chemical manipulations. However, there is a number of techniques of hydrogel preparation via dissolution and regeneration of non-derivatized cellulose of various origins. Thus, hydrogels can be produced from plant-derived cellulose, lignocellulose and cellulose wastes, including agricultural, food and paper wastes. The advantages and limitations of using solvents are discussed in this review with regard to the possibility of industrial scaling up. Metallogels are often formed on the basis of ready-made hydrogels, which is why the choice of an adequate solvent is important for obtaining desirable results. The methods of the preparation of cellulose metallogels with d-transition metals in the present state of the art are reviewed.

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Controlling Size Distribution of Silver Nanoparticles using Natural Reducing Agents in MCM‐41@Ag

Cited by 3 publications

References 89 publications

Physical and Chemical Interactions of the Polar and Nonpolar Solvents on the Mesoporous Silica Material to Developing Solvent Sensors.

Physical and Chemical Interactions of the Polar and Nonpolar Solvents on the Mesoporous Silica Material to Developing Solvent Sensors.

Influence of Baccharis salicifolia Extract on Iron Oxide Nanoparticles in MCM-41@IONP and Its Application in Room-Temperature-Fabricated Metal–Insulator–Semiconductor Diodes

Cellulose-Based Metallogels—Part 1: Raw Materials and Preparation

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