CdS Quantum Dots in Hierarchical Mesoporous Silica Templated on Clay Nanotubes: Implications for Photocatalytic Hydrogen Production | Sciact - CRIS-система Института катализа

CdS Quantum Dots in Hierarchical Mesoporous Silica Templated on Clay Nanotubes: Implications for Photocatalytic Hydrogen Production Научная публикация

Журнал

ACS Applied Nano Materials
ISSN: 2574-0970

Вых. Данные

Год: 2022, Том: 5, Номер: 1, Страницы: 605–614 Страниц : 10 DOI: 10.1021/acsanm.1c03393

Ключевые слова

cadmium sulfide; halloysite; hydrogen; mesoporous silica; nanoarchitectonics; photocatalysis

Авторы

Stavitskaya Anna ¹ , Glotov Aleksandr ¹ , Pouresmaeil Fereshteh ¹ , Potapenko Ksenia ² , Sitmukhanova Eliza ¹ , Mazurova Kristina ¹ , Ivanov Evgenii ¹ , Kozlova Ekaterina ² , Vinokurov Vladimir ¹ , Lvov Yuri ³

Организации

1	Department of Physical and Colloid Chemistry, Gubkin University, Moscow 119991, Russia
2	Department of Heterogeneous Catalysis Boreskov Institute of Catalysis, SB RAS, Novosibirsk 630090, Russia
3	Institute for Micromanufacturing, Louisiana Tech University, Ruston, Louisiana 71270, United States

Информация о финансировании (3)

1	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	FSZE-2020-0007 (0768-2020-0007)
2	Правительство Российской Федерации	14.Z50.31.0035
3	Совет по грантам Президента Российской Федерации	МД-79.2020.3

A scalable and efficient photocatalyst is a key factor for sustainable hydrogen production. For the first time, clay nanotube-templated mesoporous silica of MCM-41 type was used as an efficient carrier for photocatalytic nanoparticles. 4–5 nm CdS quantum dots (QDs) were synthesized in situ on the surface of this hierarchical aluminosilicate. The influence of the QD composition on the structural, spectral, and photocatalytic properties was investigated. A series of photocatalysts with various QD sizes (3.2–4.8 nm) and band gaps (2.46–2.66 eV) were obtained. Optimization of the CdS and cocatalyst (Ru) concentration resulted in an efficient visible light photocatalyst for hydrogen production. The photocatalytic activity was tested in an aqueous solution of Na2S/Na2SO3 under 30 W 450 nm diode illumination. The hydrogen evolution rate reached 2600 μmol/gcat·h (apparent quantum efficiency of 15%) for the system with 15.0 wt % of CdS doped with 0.2 wt % of Ru, which corresponds to the rate of hydrogen production of 17.1 mmol per hour counting on the active phase. The material demonstrated almost 100% efficiency of the catalytically active phase. It showed better catalytic activity in comparison to MCM-41 due to the hierarchical structure and presence of Al that stimulated electron transfer during the photocatalytic reaction.

Stavitskaya A. , Glotov A. , Pouresmaeil F. , Potapenko K. , Sitmukhanova E. , Mazurova K. , Ivanov E. , Kozlova E. , Vinokurov V. , Lvov Y.
CdS Quantum Dots in Hierarchical Mesoporous Silica Templated on Clay Nanotubes: Implications for Photocatalytic Hydrogen Production
ACS Applied Nano Materials. 2022. V.5. N1. P.605–614. DOI: 10.1021/acsanm.1c03393 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	13 окт. 2021 г.
Принята к публикации:	6 дек. 2021 г.
Опубликована online:	16 дек. 2021 г.
Опубликована в печати:	28 янв. 2022 г.

Web of science:	WOS:000733823500001
Scopus:	2-s2.0-85121982920
РИНЦ:	47550456
Chemical Abstracts:	2021:2753753
OpenAlex:	W4200481209

БД	Цитирований
Web of science	17
Scopus	19
OpenAlex	21