期刊
APPLIED SURFACE SCIENCE
卷 527, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2020.146693
关键词
Photocatalysis; Photodegradation; TiO2; Benzyl amine; Phenol
类别
资金
- National Natural Science Foundation of China [21603054, 21773053]
- One Hundred Talent Project of Hebei Province
- Advanced Talents Incubation Program of Hebei University [801260201019]
- High-Performance Computing Center of Hebei University
A kind of phosphorus-doped TiO2 (P-TiO2) is fabricated by boric acid-induced hydrolysis of tetrabutyl titanate in ethanol solution of triphenylphosphine, then calcination and removal of boron oxide resulted from boric acid. Under the irradiation of blue light-emitting diode (LED), P-TiO2 can successfully realize the oxidative coupling of benzylamine (conversion > 95%, selectivity > 99%) with air as an oxidant. The photocatalyst exhibits excellent recycling stability and broad applicability for various benzylamine derivatives. Besides, the photodegradation of phenol can also be conducted smoothly with the photocatalyst under the irradiation of Xenon lamp. Control experiments demonstrate that boric acid-induced hydrolysis and calcination temperature determine the size-distribution and surface area of TiO2 nanoparticles, which further impact the photocatalytic performance. Density Functional Theory (DFT) calculations demonstrate that the orthophosphate species covalently bonding to the titania surface facilitates the adsorption of oxygen molecule on the surface of P-TiO2 by forming P-O bond.
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