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Highly efficient dye adsorption by hierarchical porous SA/PVA/ZIF-8 composite microgels prepared via microfluidics.
Carbohydr Polym
February 2025
Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, Republic of Korea; School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea. Electronic address:
Hierarchical porous composite microgels (SPZ microgels) were synthesized using microfluidic technology, composed of sodium alginate (SA), polyvinyl alcohol (PVA), and zeolitic imidazolate framework-8 (ZIF-8). The incorporation of ZIF-8 nanoparticles led to the formation of significant porous structures within the microgels, greatly enhancing their dye adsorption performance. Additionally, the diffusion of acetone during the crosslinking reaction resulted in sodium chloride crystal formation, creating a hierarchical porous structure with larger internal porous channels and smaller external channels.
View Article and Find Full Text PDFAn innovative and efficient strategy for removing Congo red using magnetic hollow Zn/Co zeolitic imidazolate framework composite.
Environ Res
January 2025
College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun 130012, China.
The discharge of wastewater containing Congo red (CR) poses a significant threat to aquatic ecosystems and human health, underscoring the urgent need for effective removal methods. In this study, we have developed a novel strategy for efficient removing CR, utilizing the synthesized magnetic hollow Zn/Co zeolitic imidazolate framework composite (MH-ZIF). Comprehensive characterization of MH-ZIF and comparison with contrasting materials were conducted.
View Article and Find Full Text PDFGrowth and Structure of Ultrathin Iron Silicate and Iron Germanate Films.
J Phys Chem C Nanomater Interfaces
November 2024
Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, Berlin D-14195, Germany.
Article Synopsis
- The study explores the growth and structure of ultrathin iron silicate and iron germanate films on a ruthenium substrate, focusing on how temperature affects their formation.
- These two-dimensional films serve as simplified models for more complex, catalytically active structures like zeolites, which have applications as catalysts and molecular sieves.
- Researchers used advanced experimental techniques for real-time analysis and theoretical modeling to reveal that both film systems consist of a two-layer structure, with distinct compositions impacting the arrangement and properties of iron atoms within the films.
Preparation of NaA zeolite with graphite tailings and its adsorption of ammonia nitrogen.
Sci Rep
November 2024
College of Civil Engineering, Heilongjiang University, Xidazhi Road 74, Nangang District, Harbin, 150080, People's Republic of China.
Environmental pollution caused by the accumulation of graphite tailings (GT) is a significant global challenge. In this study, GT was utilized as a raw material to synthesize NaA zeolite (GTA), with synthesis conditions optimized. The synthesized GTA was characterized by SEM, EDS, BET, XRD, and FTIR, and its ammonia nitrogen (AN) adsorption performance was investigated under varying conditions, including dosage, pH, adsorption time, and temperature.
View Article and Find Full Text PDFEfficient removal of ammonia-nitrogen in wastewater by zeolite molecular sieves prepared from coal fly ash.
Sci Rep
September 2024
Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, 310015, People's Republic of China.
Zeolite molecular sieves are potential adsorbents for wastewater treatment, characterized by high efficiency, simple process, easy regeneration, and low treatment cost. In this study, zeolite A molecular sieves were prepared using coal fly ash (CFA), which is an effective method for the utilization of CFA. The results showed that the CFA-based zeolite molecular sieves synthesized under optimized conditions exhibited excellent adsorption and removal rates (> 40%) for ammonia-nitrogen in wastewater of different concentrations and properties.
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