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- Title
The Preparation of a Highly Efficient Ag<sub>3</sub>PO<sub>4</sub>/Ag/Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> Photo-Catalyst and the Study of Its Photo-Catalytic Organic Synthesis Reaction Driven by Visible Light.
- Authors
Zhi Guo; Hui Xin; Jingjing Ma; Meifen Bai; Yan Wang; Jingyi Li
- Abstract
Ag3PO4/Ag/Bi2O2CO3 composites were prepared by a hydrothermal and precipitation method. The morphology, structure, and valence state of the photo-catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) specific surface areas, and UV-vis diffuse reflectance spectra (UV-vis DRS). They were applied as heterogeneous catalysts in the synthesis of esters from aldehydes (or alcohols) and alcohols and the synthesis of imines from alcohols and amines under visible light irradiation. The photo-catalytic activities of the esterification reactions of aldehydes and alcohols were heavily dependent on the loading of Ag3PO4/Ag/Bi2O2CO3 as well as the intensity and wavelength of the visible light. Furthermore, their conversion under visible light irradiation was superior to that in the dark. Herein a reaction mechanism from aldehydes and alcohols to esters was proposed, and the Ag3PO4/Ag/Bi2O2CO3 catalysts could be used six times without a significant decrease in activity. Using these catalysts under visible light could motivate future studies to develop efficient recyclable photo-catalysts and facilitate many synthetic organic reactions.
- Subjects
PHOTOCATALYSTS; X-ray photoelectron spectroscopy; ESTERIFICATION
- Publication
Catalysts (2073-4344), 2017, Vol 7, Issue 9, p276
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal7090276