Perovskite catalysts with different dimensionalities for environmental and energy applications: A review

Effect of film thickness on electrochromic performance of sol-gel deposited tungsten oxide (WO3)

Nanoscale tungsten oxides (WO3/W18O49) are a hot research topic because of their impeccable performance in different fields, such as multi-step responses to one stimulus or selective response to a stimulus under controlled conditions, particularly electrochromic performance and energy saving applications in dynamic controllable smart windows. To satisfy different environments, the transparency and thermal insulation of windows are particularly tailored to reduce energy consumption, thereby decreasing cooling and heating costs. In this review, the nonstoichiometric tungsten oxides (WO3−x) are presented in detail, summarized, and discussed, focusing on various methods for the synthesis of W18O49 and WO3, such as chemical vapor deposition (CVD), physical vapor deposition (PVD), sol–gel, solvothermal, and hydrothermal methods, together with the synthetic strategies for the corresponding thin coatings. Then, the advanced strategies to improve the EC performance of nonstoichiometric W18O49 nanostructures for multi-functionality EC smart windows are discussed. Furthermore, the fundamental mechanisms in coloration/bleaching related to oxygen vacancies, hybridization, elemental doping and surface decoration are explored and discussed in detail. Finally, the key challenges, future developments, and remarks to improve the variability of EC smart windows, such as energy harvesting and energy storing multifunction, coloration enhancement, stability, durability, and reducing toxicity are also highlighted accordingly.

/pdf/advanced-developments-in-nonstoichiometric-tungsten-oxides-1hm8kwo4k2.pdf

Advanced developments in nonstoichiometric tungsten oxides for electrochromic applications

Domestic microwave supported green synthesis of ZnO nanoparticles for electronic, mechano, rheological and frequency intensifying applications

Electrochromic properties of WO3 films based on lithium iodide and lithium perchlorate polymer electrolyte

Tungsten oxide (WO3) is a transition metal oxide with a wide range of applications such as displays, rear-view mirrors, electrochromic (EC) smart windows and gas sensors. Many techniques were adopted for the fabrication of WO3, namely magnetron sputtering, spray pyrolysis and sol-gel synthesis techniques. In this work, WO3 films were deposited on indium tin oxide (ITO) coated glasses by sol-gel spin-coating method. The film thickness was varied by depositing different number of layers. The WO3 film thickness and optical transmittance were determined using step profilometer and ultraviolet-visible (UV-Vis) spectrophotometer, respectively. WO3 film thicknesses increased from 38 nm to 606 nmwith increasing number of deposited layers.The optical transmittance of the WO3 films in visible range decreased with increasing film thickness. The optical transmittance were at least 70 % up to 10 deposited layers.WO3is a promising EC material in the application ofEC devices (ECDs).The application of WO3 in the EC devices will be discussed.

Tungsten Oxide (WO3) Films Prepared by Sol-Gel Spin-Coating Technique

In situ grown ZnO nanoparticles using Begonia leaves–dielectric, magnetic, filter utility and tribological properties for mechano-electronic applications

Magnetically recoverable Nd0.7Ca0.3Mn1-Ni O3 polygonal-shaped perovskite nanophotocatalysts for efficient visible-light degradation of methylene blue and tetracycline

Configuring Nd0.7Ca0.3Mn1-xNixO3 perovskite nanocomposites with magnetocaloric performance

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Tungsten Oxide (WO3) Films Prepared by Sol-Gel Spin-Coating Technique

In situ grown ZnO nanoparticles using Begonia leaves–dielectric, magnetic, filter utility and tribological properties for mechano-electronic applications

Magnetically recoverable Nd0.7Ca0.3Mn1-Ni O3 polygonal-shaped perovskite nanophotocatalysts for efficient visible-light degradation of methylene blue and tetracycline

Configuring Nd0.7Ca0.3Mn1-xNixO3 perovskite nanocomposites with magnetocaloric performance