Colloidal Nanoparticles and Surface Science in Environment

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 820

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Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy
Interests: nanosystems; drug delivery; biomacromolecular interactions; biomembranes
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Special Issue Information

Dear Colleagues,

Nanotechnology is playing an increasingly central role in many different fields; in particular, it can represent a precious tool in tackling basic global environmental concerns. Nanomaterial size, shape, crystallinity, and surface can provide unique physical and chemical properties, such as high surface area, well-defined structure, high dispersibility, and high reactivity, to be exploited for the destruction of environmental pollutants, remediation purposes, or energy applications. On the other hand, the relatively recent development of nanotechnology requires the development of green syntheses of nanomaterials and a deeper understanding of the fate of nanomaterials once released into the environment and their potential toxicity.

The aim of this Special Issue is to highlight the progress and fundamental aspects for the application of nanomaterials to address and help solve environmental issues that have an impact on the Earth and human wellbeing, as well as to contribute to a clear picture of their impact on different ecosystems.

Dr. Irene Russo Krauss
Guest Editor

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Keywords

  • nanotechnology
  • pollution
  • remediation
  • green energy
  • green synthesis
  • nanocatalysis
  • photodegradation
  • toxicity

Published Papers (1 paper)

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Research

15 pages, 4094 KiB  
Article
Amplifying Photochromic Response in Tungsten Oxide Films with Titanium Oxide and Polyvinylpyrrolidone
by Min-Sung Kim, Jun-Ho Yoon, Hong-Mo Kim, Dong-Jun Lee, Tamaki Hirose, Yoshihiko Takeda and Jae-Pil Kim
Nanomaterials 2024, 14(13), 1121; https://doi.org/10.3390/nano14131121 - 29 Jun 2024
Viewed by 604
Abstract
Tungsten oxide (WO3) is known for its photochromic properties, making it useful for smart windows, displays, and sensors. However, its small bandgap leads to rapid recombination of electron–hole pairs, resulting in poor photochromic performance. This study aims to enhance the photochromic [...] Read more.
Tungsten oxide (WO3) is known for its photochromic properties, making it useful for smart windows, displays, and sensors. However, its small bandgap leads to rapid recombination of electron–hole pairs, resulting in poor photochromic performance. This study aims to enhance the photochromic properties of WO3 by synthesizing hexagonal tungsten oxide via hydrothermal synthesis, which increases surface area and internal hydrates. Titanium oxide (TiO2) was adsorbed onto the tungsten oxide to inject additional charges and reduce electron–hole recombination. Additionally, polyvinylpyrrolidone (PVP) was used to improve dispersion in organic solvents, allowing for the fabrication of high-quality films using the doctor blade method. Characterization confirmed the enhanced surface area, crystal structure, and dispersion stability. Reflectance and transmittance measurements demonstrated significant improvements in photochromic properties due to the composite structure. These findings suggest that the introduction of TiO2 and PVP to tungsten oxide effectively enhances its photochromic performance, broadening its applicability in various advanced photochromic applications. Full article
(This article belongs to the Special Issue Colloidal Nanoparticles and Surface Science in Environment)
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