Preparation of TiO2/WO3 composite photocatalysts by the adjustment of the semiconductors' surface charge

Baia, Lucian; Orbán, Eszter; Fodor, Szilvia; Hampel, Boglárka; Kedves, Endre-Zsolt; Saszet, Kata; Székely, István; Karácsonyi, É.; Réti, Balázs; Berki, Péter; Vulpoi, Adriana; Magyari, Klára; Csavdari, Alexandra Ana; Bolla, Csaba; Coșoveanu, Veronica; Hernádi, Klára; Baia, Monica; Dombi, András; Danciu, Virginia; Kovács, Gábor; Pap, Zsolt

doi:10.1016/j.mssp.2015.08.042

Cited by 39 publications

(24 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to other published data, this result is interesting, as the WO 3 -TiO 2 composites’ efficiency towards phenol was reported to be lower [6] compared to that of the bare TiO 2 . Higher activity was achieved only when a third composite component (noble metals—Au or Pt) was also introduced or the TiO 2 -WO 3 interparticle contact was maximized by the adjustment of the semiconductors’ surface charge [16,26,27]. The main reason for which the degradation curves were plotted separately after 1 h and 2 h was that, after one hour, the degradation rates were not influenced significantly by the intermediates’ concentration.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Shape-Tailored WO3 Micro-/Nanocrystals and the Photocatalytic Activity of WO3/TiO2 Composites

et al. 2016

Self Cite

View full text Add to dashboard Cite

A traditional semiconductor (WO3) was synthesized from different precursors via hydrothermal crystallization targeting the achievement of three different crystal shapes (nanoplates, nanorods and nanostars). The obtained WO3 microcrystals were analyzed by the means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflectance spectroscopy (DRS). These methods contributed to the detailed analysis of the crystal morphology and structural features. The synthesized bare WO3 photocatalysts were totally inactive, while the P25/WO3 composites were efficient under UV light radiation. Furthermore, the maximum achieved activity was even higher than the bare P25’s photocatalytic performance. A correlation was established between the shape of the WO3 crystallites and the observed photocatalytic activity registered during the degradation of different substrates by using P25/WO3 composites.

show abstract

Section: Resultsmentioning

confidence: 99%

Synthesis of Shape-Tailored WO3 Micro-/Nanocrystals and the Photocatalytic Activity of WO3/TiO2 Composites

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…The nanoparticles of WO 3 are more active than the bulk form, exhibiting good optoelectronic performance in various arrangements. For example, WO 3 nanoparticles exhibit comparable photocatalytic properties for organic degradation compared with the TiO 2 counterpart P25, 172,173 and photovoltaic effects are generated when they are incorporated in dye-sensitized solar cells, achieving a 1.46% power conversion efficiency when treated with TiCl 4 . 174 Polyoxotungstates have been extensively researched for dye-sensitized solar cells subjected to the metal and ligand modification.…”

Section: Polyoxotungstatementioning

confidence: 99%

Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

Zhang

Chen

2020

Int J Energy Res

View full text Add to dashboard Cite

Summary Polyoxometalates could be viewed as the molecular counterpart of the metal oxides, which are essential ingredients for various energy conversion and storage applications. In this manuscript, we review the progress of engineering functional polyoxometalates toward energy applications, focusing on, but not limited to, polyoxotitanate, polyoxotungstate, and polyoxomolybdate. These polyoxometalates are considered to be promising candidates for dye‐sensitized solar cell, perovskite solar cell, lithium‐ion battery, lithium‐sulfur battery, supercapacitor, and water‐splitting system. We believe advanced energy devices with better performance could be derived from further engineering the polyoxometalates owing to their molecular design flexibility.

show abstract

“…TiO 2 is also often used supported with metal/metal oxide particles, creating composite material e.g. TiO 2 -CdS [8], Bi 2 S 3 -TiO 2 [9], TiO 2 -WO 3 [10], TiO 2 -Fe 2 O 3 [11], TiO 2 -SnO 2 [12], or TiO 2 -MoO 3 [13].…”

Section: Introductionmentioning

confidence: 99%

TiO₂ immobilised on biopolymer nanofibers for the removal of bisphenol A and diclofenac from water

Kudlek

Silvestri

Stuchlík

et al. 2017

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

Abstract:Recently electrospinning has gained significant attention due to unique possibilities to produce novel natural nanofibers and fabrics with controllable pore structure. The present study focuses on the fabrication of electrospun fibres based on gum karaya (GK), a natural tree gum, with polyvinyl alcohol (PVA), and functionalization of the membrane with TiO2 nanoparticles with further methane plasma treatment. The GK/PVA/TiO2 membrane was analyzed with several techniques including: fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), and water contact angle, in order to characterize its morphological and physicochemical properties. The GK/PVA/TiO2 membrane was further successfully used for the degradation (under UV irradiation) of bisphenol A and diclofenac from aqueous solution. It was also observed that the degradation kinetics of these compounds are faster in comparison to the UV treatment alone.

show abstract

Preparation of TiO2/WO3 composite photocatalysts by the adjustment of the semiconductors' surface charge

Cited by 39 publications

References 20 publications

Synthesis of Shape-Tailored WO3 Micro-/Nanocrystals and the Photocatalytic Activity of WO3/TiO2 Composites

Synthesis of Shape-Tailored WO3 Micro-/Nanocrystals and the Photocatalytic Activity of WO3/TiO2 Composites

Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

TiO₂ immobilised on biopolymer nanofibers for the removal of bisphenol A and diclofenac from water

Contact Info

Product

Resources

About

Preparation of TiO2/WO3 composite photocatalysts by the adjustment of the semiconductors' surface charge

Cited by 39 publications

References 20 publications

Synthesis of Shape-Tailored WO3 Micro-/Nanocrystals and the Photocatalytic Activity of WO3/TiO2 Composites

Synthesis of Shape-Tailored WO3 Micro-/Nanocrystals and the Photocatalytic Activity of WO3/TiO2 Composites

Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

TiO2 immobilised on biopolymer nanofibers for the removal of bisphenol A and diclofenac from water

Contact Info

Product

Resources

About

TiO₂ immobilised on biopolymer nanofibers for the removal of bisphenol A and diclofenac from water