The hybrid composite of cesium phosphomolybdate (CsPM) encapsulated in hierarchical porous UiO-66 (HP-UiO-66) was synthesized using a modulated solvothermal method. A variety of characterization results demonstrated that the pore size distribution of CsPM@HP-UiO-66 is broader than traditional microporous CsPM@UiO-66 and cesium phosphomolybdate clusters are uniformly distributed in the octahedral cages of HP-UiO-66. The catalytic properties of the hybrid composite were investigated in alkene epoxidation reaction with -butyl hydroperoxide (-BuOOH) as an oxidant. CsPM@HP-UiO-66 showed much higher catalytic activity for the alkene epoxidation reaction in comparison with the reference catalysts and could be easily reused by centrifugation and recycled for at least ten runs without significant loss in catalytic activity. The superior catalytic activity and stability of the hybrid composite CsPM@HP-UiO-66 should be mainly attributed to the hierarchical pores in the support HP-UiO-66 promoting the diffusion of alkene molecules, the uniform distribution of highly active CsPM clusters in the octahedral cages of HP-UiO-66, the introduction of cesium cations to form the insoluble cesium phosphomolybdate and the strong metal-support interactions (SMSI) between the CsPM clusters and the HP-UiO-66 framework.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10652060 | PMC |
| http://dx.doi.org/10.1039/d3ra06749a | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Dual Channel HO Photosynthesis in Pure Water over S-Scheme Heterojunction CsPMo/CC Boosted by Proton and Electron Reservoirs.
Small
September 2024
Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, 1 Xuefu Ave., Xi'an, 710127, China.
Article Synopsis
- Researchers developed a dual channel photo-driven method for producing hydrogen oxygen (HO) using a unique combination of cesium phosphomolybdate and carbonized cellulose, achieving promising production rates.
- The process benefits from an S-scheme heterojunction that improves charge carrier separation and accelerates slow oxidation reactions, leading to an apparent quantum yield of 2.1% and a solar-to-chemical conversion efficiency of 0.050%.
- Practical experiments demonstrated the system's effectiveness, successfully generating 0.24 mmol L of HO under natural sunlight, highlighting its potential for on-site applications in photocatalysis.
Efficient Selective Adsorption of Rubidium and Cesium from Practical Brine Using a Metal-Organic Framework-Based Magnetic Adsorbent.
Langmuir
May 2024
Key Laboratory of Green and High-end Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, PR China.
Rubidium (Rb) and cesium (Cs) have important applications in highly technical fields. Salt lakes contain huge reserves of Rb and Cs with industrial significance, which can be utilized after extraction. In this study, a composite magnetic adsorbent (FeO@ZIF-8@AMP, AMP = ammonium phosphomolybdate) was prepared and its adsorption properties for Rb and Cs were studied in simulated and practical brine.
View Article and Find Full Text PDFThe hybrid composite of cesium phosphomolybdate (CsPM) encapsulated in hierarchical porous UiO-66 (HP-UiO-66) was synthesized using a modulated solvothermal method. A variety of characterization results demonstrated that the pore size distribution of CsPM@HP-UiO-66 is broader than traditional microporous CsPM@UiO-66 and cesium phosphomolybdate clusters are uniformly distributed in the octahedral cages of HP-UiO-66. The catalytic properties of the hybrid composite were investigated in alkene epoxidation reaction with -butyl hydroperoxide (-BuOOH) as an oxidant.
View Article and Find Full Text PDFThe chemical microenvironment of polyoxometalates (POMs) encapsulated in metal-organic frameworks (MOFs) presents a significant influence on their catalytic performance, which can be easily regulated by the linker functional group alteration or metal substitution in MOFs. Herein, a series of cesium phosphomolybdate (CsPM) encapsulated in hierarchical porous UiO-66-X composites (CsPM@HP-UiO-66-X, X = H, 2CH, or 2OH, where X represents the alterable group grafted onto the linker benzene ring) were successfully synthesized through a one pot modulated solvothermal method. The catalytic performances of the obtained materials were explored in alkene epoxidation reaction with -butyl hydroperoxide (-BuOOH).
View Article and Find Full Text PDFEffect of settling time on the adsorption of Cs onto AMP in the AMP-coprecipitation method.
Mar Pollut Bull
December 2020
Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, Ministry of Natural Resource, 184 Daxue Road, Xiamen 361005, China.
Ten sets of experiments with different settling times were conducted to investigate the effect of settling time on the adsorption of Cs in seawater onto ammonium phosphomolybdate (AMP). The weight yields of AMP and Cs yields in all groups were generally higher than 90%. The average weight yields of AMP in each group varied from 91.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!