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Gao J, Wang Y, Yu Y, Zhu M, Kong W, Liu G, Luo X. Carbonized cellulose microspheres loaded with Pd NPs as catalyst in p-nitrophenol reduction and Suzuki-Miyaura coupling reaction. Int J Biol Macromol 2024; 269:131904. [PMID: 38688337 DOI: 10.1016/j.ijbiomac.2024.131904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 04/07/2024] [Accepted: 04/24/2024] [Indexed: 05/02/2024]
Abstract
Catalytic reduction of p-nitrophenol is usually carried out using transition metal nanoparticles such as gold, palladium, silver, and copper, especially palladium nanoparticles (Pd NPs), which are characterized by fast reaction rate, high turnover frequency, good selectivity, and high yield. However, the aggregation and precipitation of the metals lead to the decomposition of the catalyst, which results in a significant reduction of the catalytic activity. Therefore, the preparation of homogeneous stabilized palladium nanoparticles catalysts has been widely studied. Stabilized palladium nanoparticles mainly use synthetic polymers. Cellulose microspheres, as a natural polymer material with low-cost and porous fiber network structure, are excellent carriers for stabilizing metal nanoparticles. Cellulose microspheres impregnated with palladium metal nanoparticles were carbonized to have a larger specific surface area and highly dispersed palladium nanoparticles, which exhibited excellent catalytic activity in the catalytic reduction of p-nitrophenol. In this work, the cellulose carbon-based microspheres palladium (Pd@CCM) catalysts were designed and characterized by SEM, TEM, EDS, XRD, FTIR, XPS, TGA, BET, and so on. Furthermore, the catalytic performance of Pd@CCM catalysts was investigated via p-nitrophenol reduction, which showed high catalytic activity. This catalyst also exhibited excellent catalytic performance in the Suzuki-Miyaura coupling reaction. Linking aromatic monomer and benzene through Suzuki-Miyaura coupling was presented as an effective route to obtaining biaryls, and the synthesis method is low-cost and simple. In addition, Pd@CCM showed desirable recyclability while maintaining its catalytic activity even after five recycles. This work is highly suggestive of the design and application of the heterogeneous catalyst.
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Affiliation(s)
- Jiayin Gao
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China
| | - Yaoyao Wang
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China
| | - Yuqing Yu
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China
| | - Mengxiang Zhu
- Department of Medical Research Center, the First Affiliated Hospital of Ningbo University, Ningbo 315010, PR China
| | - Wen Kong
- Hubei Key Lab for Processing and Application of Catalytic Materials, Huanggang Normal University, Huanggang 438000, China
| | - Genyan Liu
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China.
| | - Xiaogang Luo
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan 430205, Hubei Province, PR China.
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Vasil'kov A, Butenko I, Naumkin A, Voronova A, Golub A, Buzin M, Shtykova E, Volkov V, Sadykova V. Hybrid Silver-Containing Materials Based on Various Forms of Bacterial Cellulose: Synthesis, Structure, and Biological Activity. Int J Mol Sci 2023; 24:ijms24087667. [PMID: 37108827 PMCID: PMC10142189 DOI: 10.3390/ijms24087667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/17/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023] Open
Abstract
Sustained interest in the use of renewable resources for the production of medical materials has stimulated research on bacterial cellulose (BC) and nanocomposites based on it. New Ag-containing nanocomposites were obtained by modifying various forms of BC with Ag nanoparticles prepared by metal-vapor synthesis (MVS). Bacterial cellulose was obtained in the form of films (BCF) and spherical BC beads (SBCB) by the Gluconacetobacter hansenii GH-1/2008 strain under static and dynamic conditions. The Ag nanoparticles synthesized in 2-propanol were incorporated into the polymer matrix using metal-containing organosol. MVS is based on the interaction of extremely reactive atomic metals formed by evaporation in vacuum at a pressure of 10-2 Pa with organic substances during their co-condensation on the cooled walls of a reaction vessel. The composition, structure, and electronic state of the metal in the materials were characterized by transmission and scanning electron microscopy (TEM, SEM), powder X-ray diffraction (XRD), small-angle X-ray scattering (SAXS) and X-ray photoelectron spectroscopy (XPS). Since antimicrobial activity is largely determined by the surface composition, much attention was paid to studying its properties by XPS, a surface-sensitive method, at a sampling depth about 10 nm. C 1s and O 1s spectra were analyzed self-consistently. XPS C 1s spectra of the original and Ag-containing celluloses showed an increase in the intensity of the C-C/C-H groups in the latter, which are associated with carbon shell surrounding metal in Ag nanoparticles (Ag NPs). The size effect observed in Ag 3d spectra evidenced on a large proportion of silver nanoparticles with a size of less than 3 nm in the near-surface region. Ag NPs in the BC films and spherical beads were mainly in the zerovalent state. BC-based nanocomposites with Ag nanoparticles exhibited antimicrobial activity against Bacillus subtilis, Staphylococcus aureus, Escherichia coli bacteria and Candida albicans and Aspergillus niger fungi. It was found that AgNPs/SBCB nanocomposites are more active than Ag NPs/BCF samples, especially against Candida albicans and Aspergillus niger fungi. These results increase the possibility of their medical application.
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Affiliation(s)
- Alexander Vasil'kov
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Ivan Butenko
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
- G.F. Gause Institute of New Antibiotics, 119021 Moscow, Russia
| | - Alexander Naumkin
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Anastasiia Voronova
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Alexandre Golub
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Mikhail Buzin
- A.N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia
| | - Eleonora Shtykova
- Shubnikov Institute of Crystallography, FSRC "Crystallography and Photonics" RAS, 119333 Moscow, Russia
| | - Vladimir Volkov
- Shubnikov Institute of Crystallography, FSRC "Crystallography and Photonics" RAS, 119333 Moscow, Russia
| | - Vera Sadykova
- G.F. Gause Institute of New Antibiotics, 119021 Moscow, Russia
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