A new La‐Doped CuBi2O4 Catalysts for the Reduction of Nitroaromatic Compounds and Toxic Organic Dyes. Issue 47 (14th December 2020)

• Record Type: Journal Article
• Authors: Yang, Li; Quan, Shanyu; Li, Ting; Shi, Xuefeng; Liu, Cong
• Is Part Of: ChemistrySelect. Volume 5:Issue 47(2020)
• Page Start: 14935
• Page End: 14942
• Publication Date: 2020-12-14
• Subjects: CuBi2O4 -- La doping -- H absorption -- electron transfer -- Catalytic reduction; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202003867
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: The new La‐doped CuBi2 O4 catalysts were prepared by one‐pot hydrothermal method. The prepared catalysts were investigated by high‐resolution transmission electron microscopy (HRTEM), powder X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), Hydrogen temperature‐programmed desorption (H2 ‐TPD), and Electrochemical impedance spectroscopy (EIS). The synthetic catalysts have been investigated for the reduction of 4‐nitrophenol and toxic organic dyes. La‐doping improve the surface electron transport and H2 ‐adsorption ability. The La−CuBi2 O4 (C) catalyst has higher electron transfer efficiency and stronger H absorption ability. It was proposed that the doped La 3+ and surface hydrogen species play key roles in reduction reaction. The electron transfer can be achieved by La 3+ capture electron to be reduced La 2+, then La 2+ return to original state. Meanwhile, the improvement of H absorption ability due to La‐doping is also benefit to reduce the 4‐NP. This study is helpful in acquiring an in‐depth insight into the catalytic role of doping. Abstract : The new La‐doped CuBi2 O4 catalysts were prepared by one‐pot hydrothermal method. La‐doping improve the surface electron transport and H2 ‐adsorption ability, which show high catalytic activities for the reduction of 4‐NP and degradation of toxic organic dyes.