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- Title
Synergetic effect of BiOCl/Bi<sub>12</sub>O<sub>17</sub>Cl<sub>2</sub> and MoS<sub>2</sub>: in situ DRIFTS investigation on photocatalytic NO oxidation pathway.
- Authors
Zhang, Wen-Dong; Dong, Xing-An; Liang, Yi; Liu, Rui; Sun, Yan-Juan; Dong, Fan
- Abstract
The BiOCl/Bi12O17Cl2@MoS2 (BOC-MS) composites were successfully synthesized by a facile method at room temperature. The physicochemical properties of the as-obtained samples were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ultraviolet–visible diffuse reflection spectra (UV–Vis DRS), photoluminescence (PL), Brunauer–Emmett–Teller–Barrett–Joyner–Halenda (BET–BJH), and electron spin resonance (ESR) in detail. Moreover, the in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was applied to elucidate the adsorption and photocatalytic reaction mechanism. The optimized BOC-MS-1.0 composites exhibited excellent visible light photocatalytic capability (51.1%) and photochemical stability for removal of NO. Based on the DMPO-ESR spin trapping, the ·O2− radicals and ·OH radicals were identified as the main active species generated from BOC-MS-1.0 under visible light irradiation. The enhanced photocatalytic performance can be ascribed to the positive synergetic effect of the MoS2 and the effective carrier separation ability.
- Publication
Rare Metals, 2019, Vol 38, Issue 5, p437
- ISSN
1001-0521
- Publication type
Article
- DOI
10.1007/s12598-019-01230-5