TY - JOUR
T1 - Covalently functionalized TiO2 with ionic liquid
T2 - A high-performance catalyst for photoelectrochemical water oxidation
AU - Jing, Lin
AU - Wang, Min
AU - Li, Xinyuan
AU - Xiao, Ruoyun
AU - Zhao, Yufei
AU - Zhang, Yuxia
AU - Yan, Yi Ming
AU - Wu, Qin
AU - Sun, Kening
N1 - Publisher Copyright:
© 2014 Elsevier B.V.
PY - 2015/5/1
Y1 - 2015/5/1
N2 - Ionic liquid (IL) [BsAIm][HSO4] was covalently introduced to TiO2 through a simple route. The synthesized IL-TiO2 hybrid was thoroughly studied by using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The as-prepared IL-TiO2 not only exhibits a significantly enhanced photoelectrochemical (PEC) activity, which is almost ten-fold higher than that of the bare TiO2, but also possesses promising photo-stability under continuous working conditions. Based on the results, such as charge transfer efficiency, UV-Vis absorption spectroscopy, photoluminescence (PL) emission spectroscopy, and incident-photon-to-current-conversion efficiency (IPCE) tests, we propose a reasonable mechanism to understand the enhanced performance of the IL-TiO2 toward PEC water oxidation. The significant enhanced PEC performance of IL-TiO2 should be ascribed to a synergistic effect between covalently linked IL units and TiO2 particles.
AB - Ionic liquid (IL) [BsAIm][HSO4] was covalently introduced to TiO2 through a simple route. The synthesized IL-TiO2 hybrid was thoroughly studied by using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The as-prepared IL-TiO2 not only exhibits a significantly enhanced photoelectrochemical (PEC) activity, which is almost ten-fold higher than that of the bare TiO2, but also possesses promising photo-stability under continuous working conditions. Based on the results, such as charge transfer efficiency, UV-Vis absorption spectroscopy, photoluminescence (PL) emission spectroscopy, and incident-photon-to-current-conversion efficiency (IPCE) tests, we propose a reasonable mechanism to understand the enhanced performance of the IL-TiO2 toward PEC water oxidation. The significant enhanced PEC performance of IL-TiO2 should be ascribed to a synergistic effect between covalently linked IL units and TiO2 particles.
KW - Ionic liquid
KW - Oxygen
KW - Photoelectrochemical activity
KW - TiO
KW - Water oxidation
UR - http://www.scopus.com/inward/record.url?scp=84918829438&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2014.11.046
DO - 10.1016/j.apcatb.2014.11.046
M3 - Article
AN - SCOPUS:84918829438
SN - 0926-3373
VL - 166-167
SP - 270
EP - 276
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
ER -