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Fabrication of nano-In2O3 Phase Junction by Pulse Alternating Current Synthesis for Enhanced Photoelectrochemical Performance: Unravelling the Role of Synthetic Conditions Научная публикация

Журнал Ceramics International
ISSN: 0272-8842
Вых. Данные Год: 2023, Том: 49, Номер: 7, Страницы: 10986-10992 Страниц : 7 DOI: 10.1016/j.ceramint.2022.11.293
Ключевые слова In2O3; Electrochemical synthesis; Pulse alternating current; Phase-junction; Cubic; Rhombohedral; Photoelectrochemical water splitting
Авторы Molodtsova Tatyana 1 , Gorshenkov Mikhail 2 , Kolesnikov Evgeny 2 , Leontyev Igor 3 , Kaichev Vasily 4 , Zhigunov Denis 5 , Faddeev Nikita 1 , Kuriganova Alexandra 1 , Smirnova Nina 1
Организации
1 Platov South-Russian State Polytechnic University (NPI), Novocherkassk, 346428, Russia
2 National University of Science & Technology “MISIS”, Moscow, 119049, Russia
3 Southern Federal University, Rostov-on-Don, 344006, Russia
4 Boreskov Institute of Catalysis, Novosibirsk, 630090, Russia
5 Skolkovo Institute of Science and Technology, Moscow, 121205, Russia

Информация о финансировании (2)

1 Российский научный фонд 20-79-10063 (121112500153-8)
2 Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) Приоритет 2030

Реферат: Rational design and controllable synthesis of materials with improved activity and stability remains one of the key challenges to be addressed in the field of photoelectrochemical water splitting. In this work, a series of nano-In2O3 (c- and c/rh-In2O3) with tunable cubic-to-rhombohedral phase ratios was obtained via pulse alternating current electrosynthesis followed by air annealing. The physicochemical characterization of In2O3 using XRD, FESEM, TEM, XPS, Raman, UV–vis DRS and BET techniques along with photoelectrochemical test indicate that synthetic conditions greatly influence on structural, morphological and optical properties. The c/rh-phase ratio was feasibly controlled by altering the nature of the electrolyte (LiCl, KCl, NaCl and Na2SO4) without adding any organic additives. The c/rh-In2O3 synthesized using NaCl aqueous electrolyte shows enhanced photoelectrochemical activity (0.35 mA/cm2 at 1.23 V vs RHE) and photoconversion efficiency (0.09%) as well as excellent long-term stability (over 7 h). The improved performance of the c/rh-In2O3 results from the constructing the well-defined phase-junction with optimal phase ratio (72% c-/28% rh-) and the high oxygen deficiency providing a synergistic effect between rh-In2O3 and c-In2O3 for more efficient separation and transfer of photogenerated charges. These results lead to a better understanding of designing metal oxide phase-junctions for photoelectrochemical applications.
Библиографическая ссылка: Molodtsova T. , Gorshenkov M. , Kolesnikov E. , Leontyev I. , Kaichev V. , Zhigunov D. , Faddeev N. , Kuriganova A. , Smirnova N.
Fabrication of nano-In2O3 Phase Junction by Pulse Alternating Current Synthesis for Enhanced Photoelectrochemical Performance: Unravelling the Role of Synthetic Conditions
Ceramics International. 2023. V.49. N7. P.10986-10992. DOI: 10.1016/j.ceramint.2022.11.293 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
Поступила в редакцию: 28 июл. 2022 г.
Принята к публикации: 23 нояб. 2022 г.
Опубликована online: 24 нояб. 2022 г.
Опубликована в печати: 1 апр. 2023 г.
Идентификаторы БД:
Web of science: WOS:000944733600001
Scopus: 2-s2.0-85142817068
РИНЦ: 54106227
Chemical Abstracts: 2022:2976550
OpenAlex: W4309931569
Цитирование в БД:
БД Цитирований
Scopus 10
РИНЦ 13
OpenAlex 11
Web of science 7
Альметрики: