Study on the energy band structure and photoelectrochemical performances of spinel Li{sub 4}Ti{sub 5}O{sub 12}

Journal Article · Thu Jan 15 04:00:00 EST 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.10.064· OSTI ID:22420794

Ge, Hao; Tian, Hui ^[1]; Song, Hua ^[2]; Liu, Daliang; Wu, Shuyao ^[1]; Shi, Xicheng ^[2]; Gao, Xiaoqiang; Lv, Li ^[2]; Song, Xi-Ming ^[1]

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1. Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036 (China)
2. Research Institute of Chemical Defense, Beijing 100083 (China)

Highlights: • Spinel Li{sub 4}Ti{sub 5}O{sub 12} possesses more positive potential of valence band and wider band gap than TiO{sub 2}. • Spinel Li{sub 4}Ti{sub 5}O{sub 12} displays typical n-type semiconductor characteristic and excellent UV-excitateded photocatalysis activity. • Our preliminary study will open new perspectives in investigation of other lithium-based compounds for new photocatalysts. - Abstract: Energy band structure, photoelectrochemical performances and photocatalysis activity of spinel Li{sub 4}Ti{sub 5}O{sub 12} are investigated for the first time in this paper. Li{sub 4}Ti{sub 5}O{sub 12} possesses more positive valence band potential and wider band gap than TiO{sub 2} due to its valence band consisting of Li{sub 1s} and Ti{sub 3d} orbitals mixed with O{sub 2p}. Li{sub 4}Ti{sub 5}O{sub 12} shows typical photocatalysis material characteristics and excellent photocatlytic activity under UV irradiation.

• OSTI ID: 22420794
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 61; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTROCHEMISTRY
ELECTRONIC STRUCTURE
ENERGY GAP
ENERGY STORAGE
IRRADIATION
LITHIUM TITANATES
N-TYPE CONDUCTORS
PHOTOCATALYSIS
SPINELS
TITANIUM OXIDES
ULTRAVIOLET RADIATION
VALENCE