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Zhao B, Yang P, Zhang N, Inns DR, Kozhevnikova EF, Katsoulidis AP, Kozhevnikov IV, Steiner A, Zhang H. Sulfonated hierarchical ZSM-5 zeolite monoliths as solid acid catalyst for esterification of oleic acid. Chem Commun (Camb) 2024; 60:13356-13359. [PMID: 39450539 DOI: 10.1039/d4cc05044d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2024]
Abstract
Sulfonated hierarchical H-ZSM-5 monoliths were synthesized via ice-templating as solid acid catalysts for biodiesel production. Characterization confirmed successful -SO3 group grafting, increasing acid density. The catalysts achieved over 90% conversion of oleic acid in esterification, with easy recovery and reuse, and the relationship between porosity and acid density was explored.
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Affiliation(s)
- Binhang Zhao
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK.
| | - Pan Yang
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK.
| | - Nan Zhang
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK.
| | - Donald R Inns
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK.
| | - Elena F Kozhevnikova
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK.
| | | | - Ivan V Kozhevnikov
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK.
| | - Alexander Steiner
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK.
| | - Haifei Zhang
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK.
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Zhang M, Dop RA, Zhang H. Polydopamine-Coated Polymer Nanofibers for In Situ Protein Loading and Controlled Release. ACS OMEGA 2024; 9:14465-14474. [PMID: 38559971 PMCID: PMC10976389 DOI: 10.1021/acsomega.4c00263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/22/2024] [Accepted: 02/28/2024] [Indexed: 04/04/2024]
Abstract
Nanofibrous polymeric materials, combined with protein therapeutics, play a significant role in biomedical and pharmaceutical applications. However, the upload of proteins into nanofibers with a high yield and controlled release has been a challenging issue. Here, we report the in situ loading of a model protein (bovine serum albumin) into hydrophilic poly(vinyl alcohol) nanofibers via ice-templating, with a 100% protein drug loading efficiency. These protein-loaded nanofibers were further coated by polydopamine in order to improve the nanofiber stability and achieve a controlled protein release. The mass ratio between poly(vinyl alcohol) and bovine serum albumin influenced the percentage of proteins in composite nanofibers and fiber morphology. More particles and less nanofibers were formed with an increasing percentage of bovine serum albumin. By varying the coating conditions, it was possible to produce a uniform polydopamine coating with tunable thickness, which acted as an additional barrier to reduce burst release and achieve a more sustained release profile.
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Affiliation(s)
- Meina Zhang
- Department
of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
| | - Romy A. Dop
- Department
of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
- Department
of Clinical Infection, Microbiology and Immunology, Institute of Infection,
Veterinary and Ecological Sciences, University
of Liverpool, Liverpool L69 7ZD, U.K.
| | - Haifei Zhang
- Department
of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
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Strach A, Dulski M, Wasilkowski D, Matus K, Dudek K, Podwórny J, Rawicka P, Grebnevs V, Waloszczyk N, Nowak A, Poloczek P, Golba S. Multifaceted Assessment of Porous Silica Nanocomposites: Unraveling Physical, Structural, and Biological Transformations Induced by Microwave Field Modification. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:337. [PMID: 38392710 PMCID: PMC10893391 DOI: 10.3390/nano14040337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/24/2024]
Abstract
In response to the persistent challenge of heavy and noble metal environmental contamination, our research explores a new idea to capture silver through porous spherical silica nanostructures. The aim was realized using microwave radiation at varying power (P = 150 or 800 W) and exposure times (t = 60 or 150 s). It led to the development of a silica surface with enhanced metal-capture capacity. The microwave-assisted silica surface modification influences the notable changes within the carrier but also enforces the crystallization process of silver nanoparticles with different morphology, structure, and chemical composition. Microwave treatment can also stimulate the formation of core-shell bioactive Ag/Ag2CO3 heterojunctions. Due to the silver nanoparticles' sphericity and silver carbonate's presence, the modified nanocomposites exhibited heightened toxicity against common microorganisms, such as E. coli and S. epidermidis. Toxicological assessments, including minimum inhibitory concentration (MIC) and half-maximal inhibitory concentration (IC50) determinations, underscored the efficacy of the nanocomposites. This research represents a significant stride in addressing pollution challenges. It shows the potential of microwave-modified silicas in the fight against environmental contamination. Microwave engineering underscores a sophisticated approach to pollution remediation and emphasizes the pivotal role of nanotechnology in shaping sustainable solutions for environmental stewardship.
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Affiliation(s)
- Aleksandra Strach
- Doctoral School, University of Silesia, Bankowa 14, 40-032 Katowice, Poland
| | - Mateusz Dulski
- Institute of Materials Engineering, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland (S.G.)
| | - Daniel Wasilkowski
- Institute of Biology, Biotechnology, and Environmental Protection, Faculty of Natural Sciences, University of Silesia, Jagiellonska 28, 40-032 Katowice, Poland; (D.W.); (A.N.)
| | - Krzysztof Matus
- Materials Research Laboratory, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland;
| | - Karolina Dudek
- Łukasiewicz Research Network, Institute of Ceramics and Building Materials, Cementowa 8, 31-938 Cracow, Poland; (K.D.); (J.P.)
| | - Jacek Podwórny
- Łukasiewicz Research Network, Institute of Ceramics and Building Materials, Cementowa 8, 31-938 Cracow, Poland; (K.D.); (J.P.)
| | - Patrycja Rawicka
- A. Chełkowski Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Vladlens Grebnevs
- Faculty of Chemistry, University of Latvia, Jelgavas Street 1, LV-1004 Riga, Latvia
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland;
| | - Natalia Waloszczyk
- Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Street 6, 44-100 Gliwice, Poland;
| | - Anna Nowak
- Institute of Biology, Biotechnology, and Environmental Protection, Faculty of Natural Sciences, University of Silesia, Jagiellonska 28, 40-032 Katowice, Poland; (D.W.); (A.N.)
| | - Paulina Poloczek
- Institute of Materials Engineering, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland (S.G.)
| | - Sylwia Golba
- Institute of Materials Engineering, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland (S.G.)
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Liu Y, Guo Q, Zhang X, Wang Y, Mo X, Wu T. Progress in Electrospun Fibers for Manipulating Cell Behaviors. ADVANCED FIBER MATERIALS 2023; 5:1241-1272. [DOI: 10.1007/s42765-023-00281-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 03/08/2023] [Indexed: 01/06/2025]
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