Single-step synthesis of sub-stoichiometric tungsten oxide particles in mixed acetic and oleic acids: Structural conversion and photoluminescence enhancement

Abstract Herein, the evolution of reduction process of ultrafine tungsten powder in industrial conditions was investigated. The transition process of morphology and composition was examined via SEM, XRD, and calcination experiments. The results show that the reduction sequence of WO2.9 was WO2.9 → WO2.72 → WO2 → W on the surface, but WO2.9 → WO2 → W inside the oxide particles. With the aid of chemical vapor transport of WO x (OH) y , surface morphology transformed into rod-like, star-shaped cracking, floret, irregularly fibrous structure, and finally, spherical tungsten particles.

Download Full-text

Physical and Biophysical Characteristics of Nanoscale Tungsten Oxide Particles and Their Interaction with Human Genomic DNA

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2011.4122 ◽

2011 ◽

Vol 11 (6) ◽

pp. 4659-4666 ◽

Cited By ~ 6

Author(s):

Vijay Bhooshan Kumar ◽

Clara Ermine Sawian ◽

Dambarudhar Mohanta ◽

Shashi Baruah ◽

NashreenS. Islam

Keyword(s):

Tungsten Oxide ◽

Genomic Dna ◽

Oxide Particles ◽

Human Genomic ◽

Human Genomic Dna

Download Full-text

Laser desorption ionization of small molecules assisted by tungsten oxide and rhenium oxide particles

Journal of Mass Spectrometry ◽

10.1002/jms.3597 ◽

2015 ◽

Vol 50 (7) ◽

pp. 891-898 ◽

Cited By ~ 14

Author(s):

Matthew C. Bernier ◽

Vicki H. Wysocki ◽

Shai Dagan

Keyword(s):

Small Molecules ◽

Tungsten Oxide ◽

Laser Desorption ◽

Laser Desorption Ionization ◽

Rhenium Oxide ◽

Desorption Ionization ◽

Oxide Particles

Download Full-text

Small Nanosized Oxygen-Deficient Tungsten Oxide Particles: Mechanistic Investigation with Controlled Plasma Generation in Water for Their Preparation

ACS Omega ◽

10.1021/acsomega.7b00986 ◽

2017 ◽

Vol 2 (8) ◽

pp. 5104-5110 ◽

Cited By ~ 3

Author(s):

Yohei Ishida ◽

Shingo Motono ◽

Wataru Doshin ◽

Tomoharu Tokunaga ◽

Hiroki Tsukamoto ◽

...

Keyword(s):

Tungsten Oxide ◽

Plasma Generation ◽

Mechanistic Investigation ◽

Oxide Particles

Download Full-text

Sensors: Single-Step Deposition of Au- and Pt-Nanoparticle-Functionalized Tungsten Oxide Nanoneedles Synthesized Via Aerosol-Assisted CVD, and Used for Fabrication of Selective Gas Microsensor Arrays (Adv. Funct. Mater. 10/2013)

Advanced Functional Materials ◽

10.1002/adfm.201370049 ◽

2013 ◽

Vol 23 (10) ◽

pp. 1226-1226 ◽

Cited By ~ 1

Author(s):

Stella Vallejos ◽

Polona Umek ◽

Toni Stoycheva ◽

Fatima Annanouch ◽

Eduard Llobet ◽

...

Keyword(s):

Tungsten Oxide ◽

Single Step ◽

Pt Nanoparticle ◽

Microsensor Arrays

Download Full-text

Doping Mo on Tungsten Oxide Thin Film and Photoelectrochemical Measurement

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2021.19256 ◽

2021 ◽

Vol 21 (9) ◽

pp. 4813-4817

Author(s):

Sang-Hyeok Yoon ◽

Kyo-Seon Kim

Keyword(s):

Thin Film ◽

Tungsten Oxide ◽

High Surface ◽

High Surface Area ◽

Single Step ◽

Oxide Thin Film ◽

Mo Doping ◽

Chemical Bonding State ◽

Electron Hole Pair ◽

Molybdenum Doping

Tungsten oxide (WO3) is semiconductor material which can be used for various applications. Especially, one-dimensional (1-D) nanostructured WO3 shows the high photoelectrochemical (PEC) performance due to high surface area and short transport route of electron–hole pair. The flame vapor deposition (FVD) process is an efficient and economical method for preparation of the 1-D nanos-tructured WO3 thin film. Molybdenum doping is a well-known method to improve the PEC performance of WO3 by reducing band gap and increasing electrical property. In this study, we prepared the 1-D WO3 nanostructures doped with Mo by FVD single step process. We confirmed that Mo was successfully doped on WO3 without changing significantly the original nanostructure, crystal structure and chemical bonding state of WO3 thin film. As a result of PEC measurement, the pho-tocurrent densities of WO3 thin film with Mo doping were higher by about 1.4 to 2 times (for applied voltage above 0.7 V vs. SCE) than those without Mo doping.

Download Full-text