A Multifunctional {P2Mo5}-based Hybrid Applying to Catalysis, Electrocatalysis and Dye Adsorption

• Published in: Chemical research in Chinese universities 2022-12, Vol.38 (6), p.1553-1560
• Main Authors: Liu, Xiaodong, Wang, Xiangchen, Xu, Na, Zhang, Zhong, Li, Xiaohui, Liu, Guocheng, Wang, Xiuli
• Format: Article
• Language: English
• Subjects: Adsorption; Analytical Chemistry; Catalysis; Catalysts; Cationic dyes; Chemical reduction; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Crystals; Hydrogen peroxide; Infrared analysis; Inorganic Chemistry; Methylene blue; Organic Chemistry; Oxidation; Physical Chemistry; Pollutants; Polyoxometallates; Selectivity; Single crystals; Thermogravimetric analysis
• ISSN: 1005-9040; 2210-3171
• DOI: 10.1007/s40242-022-2129-3

As a common environmental pollutant, thioether can cause serious environmental pollution, so selective oxidation of thioether has become one of the current research hotspots. In this paper, an inorganic-organic hybrid based on a Standberg-type polyoxometalate, [Hbiz] 5 [HP 2 Mo 5 O 23 ]·5H 2 O( 1 )(biz=benzimidazole), was obtained by adjusting pH under hydrothermal conditions. The structure was characterized by infrared spectroscopy, thermogravimetric analysis, and single-crystal X-ray diffraction. Compound 1 can be used as an excellent catalyst for the oxidation of thioanisole. The experimental results showed that thioanisole could be catalytically oxidized to methyl phenyl sulfoxide by compound 1 as a catalyst within 40 min. The conversion rate and selectivity reached 99%. Compound 1 had good cycling stability as a heterogeneous catalyst. In addition, the electrocatalytic reduction of H 2 O 2 and Cr 2 O 7 2− for hybrid 1 was preliminarily investigated. In addition, the adsorption performance of hybrid 1 on cationic dye crystal violet and methylene blue was tested, and the adsorption efficiencies can reach 98.5% and 86.3%, respectively.