【摘 要】
：
A novel flower-shaped zeolitic imidazolate framework (ZIF) doped organic-inorganic hybrid monolithic column (ZIF-HMC) was prepared by a simple sol-gel “one-step” method and utilized for efficient capillary microextraction (CME) of four brominated flame re
【机 构】
：
Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province,College of Chemistr
论文部分内容阅读
A novel flower-shaped zeolitic imidazolate framework (ZIF) doped organic-inorganic hybrid monolithic column (ZIF-HMC) was prepared by a simple sol-gel “one-step” method and utilized for efficient capillary microextraction (CME) of four brominated flame retardants.The prepared monolithic was characterized by Fourier transform infrared,scanning electron microscopy,X-ray photoelectron spectroscopy,energy disperse spectroscopy,and N2 adsorption-desorption.The parameters of CME were optimized by orthogonal array design.Under the optimal conditions,the ZIF-HMC showed excellent extraction efficiency,the limit of detection (LODs) and the limit of quantification (LOQs) were in the range of 0.52～3.1 μg/L and 1.7～10 μg/L,respectively,and the proposed method demonstrated good recovery(88.8％-116.6％) with the RSD less than 13.6％ and a reusability of at least 30 times.The ZIF-HMC possessed great potential for separating organic pollutants and the strategy used here could be extended to prepare other derivatized HMC functionalized monoliths.
其他文献
Ammonia (NH3) is considered an attractive candidate as a clean,highly efficient energy carrier.The electrocatalytic nitrogen reduction reaction (NRR) can reduce energy input and carbon footprint;therefore,rational design of effective electrocatalysts is e
In this paper,a novel BC3N2 monolayer has been found with a graphene-like structure using the developed particle swarm optimization algorithm in combination with ab initio calculations.The predicted structure meets the thermodynamical,dynamical,and mechan
Trimethoprim (TMP) is a typical antibiotic to treat infectious disease,which is among the most commonly detected antibacterial agents in natural waters and municipal wastewaters.In the present study,the impacts of dissolved oxygen (DO) on the oxidation ef
In this study,Si-doped ferrihydrite (Si-Fh) was successfully synthesized by a simple coprecipitation method for removal of heavy metals in water.Subsequently,the physicochemical properties of Si-Fh before and after adsorption were further studied using se
Accurate detection of hydrogen sulfide (H2S) is of great significance for environmental monitoring and protection.We propose a colorimetric method for the detection of H2S by the use of mixed-node Cu-Fe metal organic frameworks (Cu-Fe MOFs) as highly effi
The disinfection of waterborne pathogens from drinking water is extremely important for human health.Although countless efforts have been devoted for drinking water inactivation,challenges still exist in terms of relative high energy consumption and compl
In this work,nitric oxide absorption process by using ferrate(Ⅵ)/urea was proposed.The respective influences of the four factors including pH value,ferrate(Ⅵ) concentration,urea concentration,and the temperature and the interactive function of them on nit
Durability is one of the critical issues to restrict the commercialization of proton exchange membrane fuel cells (PEMFCs) for the vehicle application.The practical dynamic operation significantly affects the PEMFCs durability by corroding its key compone
Increasing the charge separation and the utilization efficiency of sunlight are essential factors in a photocatalytic process.In this study,we prepared crystalline N-CQDs@W18O49 heterostructures,through the in situ growth of W18O49 nanocrystals on nitroge
In this research,a novel bird nest-like zinc oxide (BN-ZnO) nanostructures were prepared by a simple solvothermal method.A sensitive electrochemical glucose biosensor was for the first time developed based on the immobilization of glucose oxidase (GOx) on