TY - JOUR
T1 - Synthesis of TiO 2 nanoparticles using novel titanium oxalate complex towards visible light-driven photocatalytic reduction of CO 2 to CH 3OH
AU - Truong, Quang Duc
AU - Le, Thi Hang
AU - Liu, Jen Yu
AU - Chung, Cheng Chi
AU - Ling, Yong Chien
N1 - Funding Information:
We gratefully acknowledge the financial support from the National Science Council of Republic of China ( NSC98-2113-M-007-016-MY3 and NSC99-2627-M-007-011 ) and National Tsing Hua University . The constructive and valuable comments by the reviewers to improve the quality of the work are also acknowledged.
PY - 2012/9/26
Y1 - 2012/9/26
N2 - TiO 2 nanoparticles (NPs) with controlled crystalline structure and morphology were synthesized by a facile hydrothermal method using a novel titanium oxalate complex. The structure, morphology, and spectral properties of the synthesized TiO 2 NPs were characterized by X-ray diffraction, Raman spectroscopy, scanning/transmission electron microscopy, and UV-vis diffuse reflectance spectroscopy. The titania phases of anatase, rutile, or brookite can be easily tuned by tailoring the solution pH during reaction. Highly ordered flower-like rutile could be obtained with oxalic acid additive. The synthesized TiO 2 catalysts showed excellent visible light absorption and remarkable photocatalytic activity for CO 2 reduction to CH 3OH under both UV-vis and visible light irradiation, mainly due to doped carbon and nitrogen. Bicrystalline anatase-brookite composite afforded maximum CH 3OH yield, attributed mainly to the unique electrical band structures and efficient charge transfer between the two crystalline phases.
AB - TiO 2 nanoparticles (NPs) with controlled crystalline structure and morphology were synthesized by a facile hydrothermal method using a novel titanium oxalate complex. The structure, morphology, and spectral properties of the synthesized TiO 2 NPs were characterized by X-ray diffraction, Raman spectroscopy, scanning/transmission electron microscopy, and UV-vis diffuse reflectance spectroscopy. The titania phases of anatase, rutile, or brookite can be easily tuned by tailoring the solution pH during reaction. Highly ordered flower-like rutile could be obtained with oxalic acid additive. The synthesized TiO 2 catalysts showed excellent visible light absorption and remarkable photocatalytic activity for CO 2 reduction to CH 3OH under both UV-vis and visible light irradiation, mainly due to doped carbon and nitrogen. Bicrystalline anatase-brookite composite afforded maximum CH 3OH yield, attributed mainly to the unique electrical band structures and efficient charge transfer between the two crystalline phases.
KW - CH OH
KW - CO reduction
KW - TiO nanoparticles
KW - Titanium oxalate complex
KW - Visible light response
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U2 - 10.1016/j.apcata.2012.06.009
DO - 10.1016/j.apcata.2012.06.009
M3 - Article
AN - SCOPUS:84864277074
VL - 437-438
SP - 28
EP - 35
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
SN - 0926-860X
ER -