Search
Aluminum-TiO2 NPs Composites as Non-precious Catalysts for Efficient Electrochemical Generation of Hydrogen
Abstract
In this paper, we demonstrated, for the first time, aluminum titania nanoparticle (Al-TiO2 NP) composites with variable amounts of TiO2 NPs as nonprecious active catalysts for the electrochemical generation of H2. These materials were synthesized by mixing desired amounts of hydrogen titanate nanotubes (TNTs), fabricated here by a cost-effective approach at moderate hydrothermal conditions, with aluminum powder (purity 99.7%; size 35 μm). The mixture was compacted under an applied uniaxial stress of 300 MPa followed by sintering at 500 °C for 1 h. After sintering had been completed, all TNTs were found to convert to TiO2 NPs (average particle size 15 nm). Finally, Al-xTiO2 NP nanocomposites (x = 1, 3, 5, and 10) were obtained and characterized by scanning electron microscopy/energy-dispersive X-ray, X-ray diffraction, and X-ray photoelectron spectroscopy. The hydrogen evolution reaction (HER) activity of these materials was studied in 0.5 M H2SO4 at 298 K using polarization and impedance measurements. The nanocomposite of chemical composition Al-5% TiO2 NPs showed the best catalytic performance for the HER, with an onset potential (EHER), a Tafel slope (βc), and an exchange current density (j0) of −100 mV (RHE), 59.8 mV decade–1, and 0.14 mA cm–2, respectively. This HER activity is not far from that of the commercial platinum/carbon catalyst (EHER = 0.0 mV, βc = 31 mV dec–1, and j0 = 0.78 mA cm–2). The best catalyst also exhibited good stability after 10000 repetitive cycles with negligible loss in current.
Citations
-
2 5
CrossRef
-
0
Web of Science
-
2 6
Scopus
Authors (9)
-
Mohammed Amin Prof.
- Taif University Department of Chemistry
-
Emad Ahmed Ph.D.
- Taif University Physics Department
-
Nasser Mostafa Ph.D.
- Suez Canal University Chemistry Department
-
Mona Alotibi
- Taif University Physics Department
-
Gitashree Darabdhara
- Materials Sciences and Technology Division CSIR-North East Institute of Science and Technology
-
Manash Das
- Materials Sciences and Technology Division CSIR-North East Institute of Science and Technology
-
Sayed El-rehim Prof.
- Ain Shams University Department of Chemistry
Cite as
Full text
full text is not available in portal
Keywords
Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
ACS Applied Materials & Interfaces
no. 8,
edition 36,
pages 655 - 667,
ISSN: 1944-8244 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Amin M., Ahmed E., Mostafa N., Alotibi M., Darabdhara G., Das M., Wysocka J., Ryl J., El-Rehim S.: Aluminum-TiO2 NPs Composites as Non-precious Catalysts for Efficient Electrochemical Generation of Hydrogen// ACS Applied Materials & Interfaces. -Vol. 8, iss. 36 (2016), s.655-667
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acsami.6b05630
- Verified by:
- Gdańsk University of Technology
seen 116 times
Recommended for you
Enhanced hydrogen evolution reaction on highly stable titania-supported PdO and Eu2O3 nanocomposites in a strong alkaline solution
- M. Ibrahim,
- A. Mezni,
- M. Alsawat
- + 8 authors
Modification of TiO2 nanotubes by graphene–strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium
- M. Szkoda,
- A. Ilnicka,
- M. Skorupska
- + 2 authors
Cathodically activated Au/TiO2 nanocomposite synthesized by a new facile solvothermal method: An efficient electrocatalyst with Pt-like activity for hydrogen generation
- A. Mezni,
- M. Ibrahim,
- M. El-kemary
- + 6 authors
Cathodic activation of synthesized highly defective monoclinic hydroxyl‐functionalized ZrO2 nanoparticles for efficient electrochemical production of hydrogen in alkaline media
- N. Mostafa,
- M. Qhtani,
- S. Alotaibi
- + 7 authors