TY - JOUR
T1 - UV, visible and near-infrared lights induced NOx destruction activity of (Yb,Er)-NaYF4/C-TiO2 composite
AU - Wu, Xiaoyong
AU - Yin, Shu
AU - Dong, Qiang
AU - Liu, Bin
AU - Wang, Yuhua
AU - Sekino, Tohru
AU - Lee, Soo Wohn
AU - Sato, Tsugio
N1 - Funding Information:
This research was supported in part by the Management Expenses Grants for National Universities Corporations from the Ministry of Education, Culture, Sports, Science for Technology of Japan (MEXT), the Grant-in-Aid for Science Research (No. 23241025, No.25289245), the Nippon Sheet Glass Foundation for Materials Science and Engineering, and also partly supported by the National Research Foundation (NRF) of Korea under the Global Research Laboratory (GRL) program, the TAGEN Project 2013 in Tohoku University, and the Adaptable and Seamless Technology Transfer Program through Target-driven R&D, JST(AS251Z00155M).
PY - 2013/10/10
Y1 - 2013/10/10
N2 - Titanium dioxide (TiO2) is a well-known photocatalyst for environmental cleaning and energy conversion. However, it can only be excited by ultraviolet light for photocatalysis due to its wide band gap (3.2 eV). In this paper, we present a novel (Yb,Er)-NaYF4/C-TiO2 composite which can be perfectly induced not only by ultraviolet light but also weak visible and near infrared lights, owing to the increased carbon doping contents and optimal energy transfer between up-conversion phosphor and C doped TiO2 compared with that of solely C-TiO2. Consequently, the (Yb,Er)-NaYF4/C-TiO2 composite can present the outstanding continuous NOx gas destruction ability under the irradiation of ultraviolet, weak visible and infrared lights much superior to pure C-TiO2, P25 titania and even that of (Yb,Er)-NaYF4/N-TiO2 composite, due to the nice synergetic effect of (Yb,Er)-NaYF4 and C-TiO2, indicating a promising potential in the photocatalyst application with high efficiency of ultraviolet, visible and infrared lights induced photocatalysis simultaneously.
AB - Titanium dioxide (TiO2) is a well-known photocatalyst for environmental cleaning and energy conversion. However, it can only be excited by ultraviolet light for photocatalysis due to its wide band gap (3.2 eV). In this paper, we present a novel (Yb,Er)-NaYF4/C-TiO2 composite which can be perfectly induced not only by ultraviolet light but also weak visible and near infrared lights, owing to the increased carbon doping contents and optimal energy transfer between up-conversion phosphor and C doped TiO2 compared with that of solely C-TiO2. Consequently, the (Yb,Er)-NaYF4/C-TiO2 composite can present the outstanding continuous NOx gas destruction ability under the irradiation of ultraviolet, weak visible and infrared lights much superior to pure C-TiO2, P25 titania and even that of (Yb,Er)-NaYF4/N-TiO2 composite, due to the nice synergetic effect of (Yb,Er)-NaYF4 and C-TiO2, indicating a promising potential in the photocatalyst application with high efficiency of ultraviolet, visible and infrared lights induced photocatalysis simultaneously.
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U2 - 10.1038/srep02918
DO - 10.1038/srep02918
M3 - Article
AN - SCOPUS:84889570628
SN - 2045-2322
VL - 3
JO - Scientific Reports
JF - Scientific Reports
M1 - 2918
ER -