Hybrid materials with synergistic properties have been used for various applications.Herein,we report a green biosynthesis strategy for the fabrication of a novel Pd/bacteria@ZIF-8 composite,featuring a sandwiched str...Hybrid materials with synergistic properties have been used for various applications.Herein,we report a green biosynthesis strategy for the fabrication of a novel Pd/bacteria@ZIF-8 composite,featuring a sandwiched structure and size-selective capabilities.The Shewanella oneidensis(S.oneidensis)MR-1 was selected as the biological reductant to reduce Pd ions and synthesize Pd nanoparticles anchored on the surface of bacteria without the need for additional chemical reductants,bonding agents and toxic surfactants.This innovative sandwiched Pd/bacteria@ZIF-8 catalyst was further coated by the ZIF-8 to enhance its structural integrity.The as-prepared composite exhibits significant catalytic activity and excellent size-selective performance in the hydrogenation of olefins.This methodology opens up a horizon to designing size-selective catalysts through constructing the sandwiched structure.展开更多
Based on two-dimensional topological structures, a novel molecular electronegativity interaction vector with hybridization （MEHIV） was developed to describe atomic hybridization state in different molecular environm...Based on two-dimensional topological structures, a novel molecular electronegativity interaction vector with hybridization （MEHIV） was developed to describe atomic hybridization state in different molecular environments. Five quantitative models by MEHIV characterization and multiple linear regression modeling were successfully established to predict reduced ion mobility constants （Ko） of alkanes, aromatic hydrocarbons, fatty alcohols, fatty aldehydes and ketones and carboxylic esters. The correlation coefficients Roy by leave-one-out cross-validation are 0.792, 0.787, 0,949, 0.972 and 0.981, respectively, and the standard deviations SDcv are 0.067, 0.086, 0.064, 0.043 and 0.042, respectively. These results suggested that MEHIV is an excellent topological index descriptor with many advantages such as straightforward physicochemical meaning, high characterization competence, convenient expansibility and easy manipulation.展开更多
基金supported by the Young Talent Support Fund from Jiangsu University(No.5501310013)Jiangsu Provincial Founds for Young Scholars(Nos.BK20210782 and BK20210744)+2 种基金the Fellowship of China Postdoctoral Science Foundation(No.2022M720057)Wenzhou Science&Technology Program(No.ZG2021025)Guangdong Basic and Applied Basic Research Foundation(No.2022A1515111017).
文摘Hybrid materials with synergistic properties have been used for various applications.Herein,we report a green biosynthesis strategy for the fabrication of a novel Pd/bacteria@ZIF-8 composite,featuring a sandwiched structure and size-selective capabilities.The Shewanella oneidensis(S.oneidensis)MR-1 was selected as the biological reductant to reduce Pd ions and synthesize Pd nanoparticles anchored on the surface of bacteria without the need for additional chemical reductants,bonding agents and toxic surfactants.This innovative sandwiched Pd/bacteria@ZIF-8 catalyst was further coated by the ZIF-8 to enhance its structural integrity.The as-prepared composite exhibits significant catalytic activity and excellent size-selective performance in the hydrogenation of olefins.This methodology opens up a horizon to designing size-selective catalysts through constructing the sandwiched structure.
基金the State Key Laboratory of Chemo/Biosensing and Chemometrics Foundation(No.05-12-1)
文摘Based on two-dimensional topological structures, a novel molecular electronegativity interaction vector with hybridization （MEHIV） was developed to describe atomic hybridization state in different molecular environments. Five quantitative models by MEHIV characterization and multiple linear regression modeling were successfully established to predict reduced ion mobility constants （Ko） of alkanes, aromatic hydrocarbons, fatty alcohols, fatty aldehydes and ketones and carboxylic esters. The correlation coefficients Roy by leave-one-out cross-validation are 0.792, 0.787, 0,949, 0.972 and 0.981, respectively, and the standard deviations SDcv are 0.067, 0.086, 0.064, 0.043 and 0.042, respectively. These results suggested that MEHIV is an excellent topological index descriptor with many advantages such as straightforward physicochemical meaning, high characterization competence, convenient expansibility and easy manipulation.
