Fabrication of carboxymethylated cellulose fibers supporting Ag NPs@MOF‐199s nanocatalysts for catalytic reduction of 4‐nitrophenol

Abstract

In this work, we prepared high‐performance and recyclable nanocatalysts that consist of small and well‐dispersed silver nanoparticles (Ag NPs) immobilized onto Cu‐ based metal–organic framework (MOF‐199 s) supported by carboxymethylated cellulose fibers (CCFs). The as‐prepared green nanohybrid catalysts, namely Ag NPs@ MOF‐199 s/CCFs, were characterized using SEM, TEM, XRD and FT‐IR techniques. The catalytic performances showed that Ag NPs@ MOF‐199 s/CCFs catalysts exhibited a very high catalytic efficiency towards the reduction of 4‐nitrophenol to 4‐aminophenol. The enhanced catalytic performances are attributed to the improved dispersity, small particles of Ag NPs stabilized by the MOF‐199 s, and the porous catalyst structures. The introduction of cellulose fiber further facilitates the reuse and sustainability of the nanohybrid catalysts, showing a stable and high reusability (more than 91% of catalytic activity) even after five runs.

Application of different Nanocatalysts in industrial effluent treatment: A review

“…The efficient separation of pairs of electron hole on Ag-ZnO/CNT was related to improved photocatalytic performance. Duan et al [81] synthesized the recyclable and high-performance nanocatalysts, which are composed of small, well-dispersed Ag nanoparticles that are immobilized on a Cu-based metal-organic substrate (MOF-199s) supported by CCFs (carboxymethylated cellulose fibers). The catalytic activity of AgNPs@ MOF-199s/CCFs catalysts for the reduction of 4-nitrophenol to 4-aminophenol showed a high catalytic efficiency.…”

“…Bao et al [81] studied a one-pot method and used co-reduction growth in polyol mixture to synthesize amino-functionalized (-NH 2 ) graphene oxide (GO-) supported networked nanowires of Pd-Ag. The results showed effective catalytic activity with superior recovering efficiency at ambient temperature (25 ºC) for catalytic Cr(VI) reduction using the H 2 source of formic acid.…”

Tailoring growth of MOF199 on hierarchical surface of bamboo and its antibacterial property

“…Metal-organic frameworks (MOF) have attracted considerable attention due to their high porosity and surface area, exible tunability, and well-de ned architecture (Duan et al 2019a). And it has been used in antibacterial systems, gas storage, heavy metal adsorption and catalysis elds (Nasruddin et al 2020).…”

“…According to previous reports, MOF have been successfully synthesized onto different bio-based materials, such as cellulose ber (Ma et al 2018;Wang et al 2015), wool fabric (Lis et al 2019), cotton fabric (Abdelhameed et al 2016;Emam et al 2016), which all have loose and porous structures and facilitate the attachment of MOF (Duan et al 2018). In cellulose materials, various efforts have been made to improve the attachment between MOF and the substrate by introducing carboxyl groups, such as carboxymethylation (Duan et al 2019a), TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-mediated oxidation (Duan et al 2019b), hydrogen peroxide oxidation (Abdelhameed et al 2016). Woody materials consist of lignin and carbohydrates (cellulose and hemicellulose), such as wood and bamboo.…”

Synthesis of AgNPs functionalized CuMOF/PPy–rGO nanocomposite and its use as an electrochemical sensor for metronidazole determination

“…[11][12][13][14][15][16] In order to improve the electrochemical performance, sensing capability, conductivity, and stability of MOFs, the surface modification and their combination with many nano-materials, including metal nanoparticles (MNPs), nanotubes, nanowires, nanocubes, and graphene, have been suggested. [17][18][19][20] Meanwhile, MNPs functionalized MOF composites could represent interesting features such as better electrical properties and superior stabilities, which are triggered by the combination of the MNPs and MOF as catalysts. Seemingly, incorporating MNPs such as AgNPs with MOFs could eliminate the defect of MOFs (the low active sites).…”