期刊
MATERIALS RESEARCH EXPRESS
卷 7, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/ab71cf
关键词
photocatalysis; TMAH; interlaminar bonding interaction; C, N-TiO2 NRs
资金
- National Natural Science Foundation of China [21676285]
- Qingdao Indigenous Innovation Program [15-9-1-76-jch]
- Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents [2017RCJJ015]
- Higher School Youth Innovation Team of Shandong Province [2019KJA013]
A green and efficient photocatalyst based on C and N co-doped titanium based nanorods (NRs) was prepared by facile hydrothermal synthesis and interlaminar bonding interaction between layered Ti3O72- and tetramethylammonium hydroxide (TMAH). TMAHas one of quaternary ammonium-based compounds was used as the doping source of C and N elements. The results showed that C and Nco-doping did not affect the anatase crystal structure of TiO2 NRs. C,N-TiO2 NRs showed excellent photocatalytic activity for degrading methyl orange under simulated sunlight irradiation. In particular, the 20:1 TiO2 NRs catalyst showed the best catalytic performance, showing efficient photocatalytic rate of 90%. The photocatalytic reaction kinetics of undoped and doped catalysts was also studied. In addition, reactive species (RSs) experiments showed that hydroxyl radical ((OH)-O-center dot), superoxide radical anions (O-center dot(2)-) and photogenerated holes (h(+)) were major active species during the photocatalytic process. The mechanisms of the electrostatic attraction and potential photocatalytic degradation were proposed and discussed.
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