Facile fabrication of WO ₃ crystalline nanoplate on FTO glass and their application in electrochromism

Abstract

Tungsten trioxide (WO 3) thin films are of great interest as counter electrodes in electrochromic (EC) devices such as 'smart window' for energy-efficient buildings. Uniform WO 3 nanoplates filmed as EC working electrodes were fabricated on seed-free fluorine-tin-oxide (FTO) coated glass via a facile and addictive agent-free hydrothermal process. The WO 3 nanoplates were characterised by scanning electron microscopy and the X-ray photoelectron spectroscopy. The morphological analysis of the film showed that the WO 3 nanoplates lying on the FTO glass uniformly. Fourier transform infrared spectroscopy was applied to study the vibrational information of the sample. Furthermore, uniform WO 3 nanoplates exhibit well performance of EC properties. Owing to the highly two-dimensional nanostructure, a fast switching speed of 12 and 3 s for colouration and bleaching are achieved for WO 3 film. These properties of the WO 3 nanoplates film endow its promising practical applications in smart windows.

Enhancement of photocatalytic and photoelectrochemical properties of BiOI nanosheets and silver quantum dots co‐modified TiO2 nanorod arrays

“…Bismuth nitrate pentahydrate Bi(NO 3 ) 3 ·5H 2 O, titanium butoxide (TBOT), ethylene glycol [(CH 2 OH) 2 ], and potassium iodide (KI) were purchased from Sinopharm Chemical Reagent Co., Ltd. Fluorine‐doped tin oxide (FTO) conducting glasses were purchased from Aladdin Industrial Corporation . Concentrated hydrochloric acid (HCl), ethanol, acetone, and methanol were purchased from Aladdin Industrial Corporation …”

“…7,8 Concentrated hydrochloric acid (HCl), ethanol, acetone, and methanol were purchased from Aladdin Industrial Corporation. 9,10 Before the hydrothermal synthesis of TiO 2 nanorods, acetone, ethanol, and deionized water were used to ultrasonically clean the FTO substrate. A TNR film can be prepared on an FTO substrate by a simple hydrothermal method.…”

İyi Elektrokromik Performans Gösteren WO3 Nanoplakaların Çekirdeklenmiş FTO Üzerine Yeni Sentezi

“…In this paper, we report the synthesis of WO3 nanoplates prepared by a simple hydrothermal synthesis method.. Several studies have reported the production of tungsten oxide using hydrothermal techniques but tungsten oxide structures have been obtained as a powder by long-term synthesis at high temperatures by a salt-acid assisted process [1,9,[11][12][13][14]. It has also been formed without the use of any seed layers on the substrate [15][16][17][18][19][20].…”

Enhanced Electrochromic Properties of WO3 Nanotree-like Structures Synthesized via a Two-Step Solvothermal Process Showing Promise for Electrochromic Window Application

“…Therefore, growing nanotree-like WO 3 structures from nanowires aligned vertically on the substrate would more efficiently use the substrate surface, thus increasing the WO 3 active surface area and improving the EC performance. 23−26 Solvothermal processing is a facile method for the synthesis of uniquely structured, high surface area, crystalline WO 3 materials, including nanorods, 27−29 nanowires, 30−32 nanosheets, 33,34 nanohoneycombs, 35 nanothorns, 36 and nanoflowers. 37 Most reported synthesis approaches to form WO 3 nanostructures require a seed layer.…”

“…Solvothermal processing is a facile method for the synthesis of uniquely structured, high surface area, crystalline WO 3 materials, including nanorods, − nanowires, − nanosheets, , nanohoneycombs, nanothorns, and nanoflowers . Most reported synthesis approaches to form WO 3 nanostructures require a seed layer.…”