Detail
Článek
Článek online
FT
Medvik - BMČ
  • Je něco špatně v tomto záznamu ?

Photochromic and Photocatalytic Properties of Ultra-Small PVP-Stabilized WO3 Nanoparticles

DA. Kozlov, AB. Shcherbakov, TO. Kozlova, B. Angelov, GP. Kopitsa, AV. Garshev, AE. Baranchikov, OS. Ivanova, VK. Ivanov,

. 2019 ; 25 (1) : . [pub] 20191230

Jazyk angličtina Země Švýcarsko

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc20023305

Grantová podpora
18-73-10150 Russian Science Foundation

Tungsten oxide-based bulk and nanocrystalline materials are widely used as photocatalytic and photo- and electrochromic materials, as well as materials for biomedical applications. In our work, we focused our attention on the effect of sodium cations on the structure and photochromic properties of the WO3@PVP aqueous sols. To establish the effect, the sols were synthesized by either simple pH adjusting of sodium or ammonium tungstates' solutions, or using an ion exchange technique to remove the cations from the materials to the greatest possible extent. We showed that the presence of sodium cations in WO3@PVP favors the formation of reduced tungsten species (W+5) upon UV irradiation of the materials, strongly affecting their photochromic and photocatalytic properties. The pronounced photoreductive properties of WO3@PVP sols in photocatalytic reactions were demonstrated. Due to photoreductive properties, photochromic sols of tungsten oxide can act as effective photoprotectors in photooxidation processes. We believe that our work provides a considerable contribution to the elucidation of photochromic and redox phenomena in WO3-based materials.

Citace poskytuje Crossref.org

000      
00000naa a2200000 a 4500
001      
bmc20023305
003      
CZ-PrNML
005      
20201214125715.0
007      
ta
008      
201125s2019 sz f 000 0|eng||
009      
AR
024    7_
$a 10.3390/molecules25010154 $2 doi
035    __
$a (PubMed)31905983
040    __
$a ABA008 $b cze $d ABA008 $e AACR2
041    0_
$a eng
044    __
$a sz
100    1_
$a Kozlov, Daniil A $u Lomonosov Moscow State University, Leninskiye Hills 1, 119234 Moscow, Russia. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky av., 119991 Moscow, Russia.
245    10
$a Photochromic and Photocatalytic Properties of Ultra-Small PVP-Stabilized WO3 Nanoparticles / $c DA. Kozlov, AB. Shcherbakov, TO. Kozlova, B. Angelov, GP. Kopitsa, AV. Garshev, AE. Baranchikov, OS. Ivanova, VK. Ivanov,
520    9_
$a Tungsten oxide-based bulk and nanocrystalline materials are widely used as photocatalytic and photo- and electrochromic materials, as well as materials for biomedical applications. In our work, we focused our attention on the effect of sodium cations on the structure and photochromic properties of the WO3@PVP aqueous sols. To establish the effect, the sols were synthesized by either simple pH adjusting of sodium or ammonium tungstates' solutions, or using an ion exchange technique to remove the cations from the materials to the greatest possible extent. We showed that the presence of sodium cations in WO3@PVP favors the formation of reduced tungsten species (W+5) upon UV irradiation of the materials, strongly affecting their photochromic and photocatalytic properties. The pronounced photoreductive properties of WO3@PVP sols in photocatalytic reactions were demonstrated. Due to photoreductive properties, photochromic sols of tungsten oxide can act as effective photoprotectors in photooxidation processes. We believe that our work provides a considerable contribution to the elucidation of photochromic and redox phenomena in WO3-based materials.
650    _2
$a katalýza $7 D002384
650    _2
$a kationty $7 D002412
650    _2
$a koncentrace vodíkových iontů $7 D006863
650    _2
$a molekulární struktura $7 D015394
650    _2
$a nanočástice $x chemie $7 D053758
650    _2
$a oxidy $x chemie $7 D010087
650    _2
$a velikost částic $7 D010316
650    _2
$a fotochemické procesy $7 D055668
650    _2
$a povidon $x chemie $7 D011205
650    _2
$a maloúhlový rozptyl $7 D053838
650    _2
$a sodík $x chemie $7 D012964
650    _2
$a wolfram $x chemie $7 D014414
650    _2
$a ultrafialové záření $7 D014466
650    _2
$a difrakce rentgenového záření $7 D014961
655    _2
$a časopisecké články $7 D016428
700    1_
$a Shcherbakov, Alexander B $u Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, D0368 Kyiv, Ukraine.
700    1_
$a Kozlova, Taisiya O $u Lomonosov Moscow State University, Leninskiye Hills 1, 119234 Moscow, Russia. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky av., 119991 Moscow, Russia.
700    1_
$a Angelov, Borislav $u Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, Na Slovance 2, CZ-18221 Prague, Czech Republic.
700    1_
$a Kopitsa, Gennady P $u Konstantinov Petersburg Nuclear Physics Institute NRC KI, Orlova Roscha, 188300 Gatchina, Leningrad district, Russia. Grebenshchikov Institute of Silicate Chemistry of the Russian Academy of Sciences, Adm. Makarova emb. 2, 199155 St. Petersburg, Russia.
700    1_
$a Garshev, Alexey V $u Lomonosov Moscow State University, Leninskiye Hills 1, 119234 Moscow, Russia.
700    1_
$a Baranchikov, Alexander E $u Lomonosov Moscow State University, Leninskiye Hills 1, 119234 Moscow, Russia. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky av., 119991 Moscow, Russia.
700    1_
$a Ivanova, Olga S $u Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky av., 119991 Moscow, Russia.
700    1_
$a Ivanov, Vladimir K $u Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky av., 119991 Moscow, Russia.
773    0_
$w MED00180394 $t Molecules (Basel, Switzerland) $x 1420-3049 $g Roč. 25, č. 1 (2019)
856    41
$u https://pubmed.ncbi.nlm.nih.gov/31905983 $y Pubmed
910    __
$a ABA008 $b sig $c sign $y a $z 0
990    __
$a 20201125 $b ABA008
991    __
$a 20201214125714 $b ABA008
999    __
$a ok $b bmc $g 1595624 $s 1113981
BAS    __
$a 3
BAS    __
$a PreBMC
BMC    __
$a 2019 $b 25 $c 1 $e 20191230 $i 1420-3049 $m Molecules $n Molecules $x MED00180394
GRA    __
$a 18-73-10150 $p Russian Science Foundation
LZP    __
$a Pubmed-20201125

Najít záznam

Citační ukazatele

Možnosti archivace