Yang Zhang,Baihe Sun,Lin Jiang,Jiahui Fan,Fangjie Qin,Zhuo Liu,Jue Wang,Kan Kan,Keying Shi
A facile polymer heat treatment and reflux method are used for developing growth of flower-like BiOCl (BiOCl NFs) on 3D honeycomb-like N-doped graphitic carbon (N-GC) to form BiOCl/N-GC composites. The N-GC hierarchical structure effectively heightened the dispersion of BiOCl NFs, which increased the contacted area for the NO x gas molecule. Benefiting from the hierarchical structure, the (102) plane of BiOCl has a suitable adsorption energy for NO x , synergistic effect of large specific surface area and mesopores of N-GC, the formation of p-p heterojunctions , Bi–C interfacial bond, N-doping and the role of chemisorbed oxygen. The BiOCl/N-GC composites have satisfactory response and selectivity for NO x gas at room temperature. It reveals an exceptionally excellent response and response time of 52.54 and 3.2 s for NO x gas. It also exhibits a low detection limit (10 ppb) and a long-stability of 12 weeks. Thus, the BiOCl/N-GC nanocomposites are one of the most potential materials in gas sensor.
The promoted effect of Cu(NO 3 ) 2 on aerobic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) catalyzed by VOSO 4 in acetonitrile was intensively investigated. It was revealed that Cu(NO 3 ) 2 facilitated the activation of VOSO 4 to generate active V 5+ species via the generation of NO x gas. The high DFF selectivity is ascribed to Cu 2+ cation which can effectively prohibit oxidative C C bond cleavage reaction of HMF and prevent radical reaction of DFF to humins. In addition, the polarity of solvent plays a great role on high selectivity of DFF.
危险品化学品经营许可证（带存储）