Electrochemical Synthesis-Dependent Photoelectrochemical Properties of Tungsten Oxide Powders
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
ChemEngineering
ISSN: 2305-7084
|
| Вых. Данные |
Год: 2022,
Том: 6,
Номер: 2,
Номер статьи
: 31,
Страниц
: 13
DOI:
10.3390/chemengineering6020031
|
| Ключевые слова |
electrochemical synthesis; photoelectrochemical reforming; pulse alternating current; tungsten oxide |
| Авторы |
Tsarenko Anastasia
1
,
Gorshenkov Mikhail
2
,
Yatsenko Aleksey
1
,
Zhigunov Denis
3
,
Butova Vera
4
,
Kaichev Vasily
5
,
Ulyankina Anna
1
|
| Организации |
| 1 |
Research Institute “Nanotechnologies and New Materials”, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, 346428, Russian Federation
|
| 2 |
Department of Physical Materials Science, National University of Science & Technology (MISIS), Moscow, 119049, Russian Federation
|
| 3 |
Center for Photonics and Quantum Materials, Skolkovo Institute of Science and Technology, Moscow, 121205, Russian Federation
|
| 4 |
The Smart Materials Research Institute, Southern Federal University, Rostov-on-Don, 344090, Russian Federation
|
| 5 |
Department of Investigation of Catalysts, Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
|
|
Информация о финансировании (1)
|
1
|
Российский научный фонд
|
21-79-00079 (121081200028-1)
|
A rapid, facile, and environmentally benign strategy to electrochemical oxidation of metallic tungsten under pulse alternating current in an aqueous electrolyte solution was reported. Particle size, morphology, and electronic structure of the obtained WO3 nanopowders showed strong dependence on electrolyte composition (nitric, sulfuric, and oxalic acid). The use of oxalic acid as an electrolyte provides a gram-scale synthesis of WO3 nanopowders with tungsten electrochemical oxidation rate of up to 0.31 g·cm−2·h−1 that is much higher compared to the strong acids. The materials were examined as photoanodes in photoelectrochemical reforming of organic substances under solar light. WO3 synthesized in oxalic acid is shown to exhibit excellent activity towards the photoelectrochemical reforming of glucose and ethylene glycol, with photocurrents that are nearly equal to those achieved in the presence of simple alcohol such as ethanol. This work demonstrates the promise of pulse alternating current electrosynthesis in oxalic acid as an efficient and sustainable method to produce WO3 nanopowders for photoelectrochemical applications.