Green synthesized AgNPs decorated on Ketjen black for enhanced catalytic dye degradation

Abstract

The green synthesis of nanoparticles using plant-based materials as an alternative to chemical and physical routes provides economic and environmental benefits. In the present study, silver nanoparticles (AgNPs) were fabricated using Pseudocydonia sinensis fruit extract. The fabricated NPs were then decorated on commercial Ketjen black-300 (AgNPs@KB-300) and Ketjen black-600 (AgNPs@ KB-600). The synthesized materials were characterized via XRD, FTIR, XPS, SEM-EDX, and HR-TEM studies. The SEM and HR-TEM results revealed that the synthesized AgNPs were spherical and successfully decorated on KB-300 and KB-600. Additionally, the catalytic ability of the synthesized samples during the degradation of methyl orange in the presence of NaBH 4 was studied. Notably, the catalytic activity of AgNPs@ KB-600 was higher than that of AgNPs@ KB-300.

Nickel-Based Metal-Organic Frameworks as Electrocatalysts for the Oxygen Evolution Reaction (OER)

“…This indicates that the second metal (iron or cobalt) was well incorporated into the structure of the Ni-BTC MOF. Pure KB displayed three broad diffraction peaks corresponding to the (100), (002), (101) planes of amorphous carbon [47,48]. Fourier transform infrared (FT-IR) spectra (Figure 2b) of the Ni-BTC analogs demonstrate the same characteristic bands (listed in Table S2, SI) which are in a good agreement with the literature [39].…”

Rapid synthesis of active Pt single atoms and Ru clusters on carbon black via a highly efficient microwave strategy for the hydrogen evolution reaction in acidic and alkaline media

“…2a), the carbon black particles served as carriers, appearing as irregular polyhedra with a tendency to coalesce, resulting in “grape bunch”-shaped clusters with particle sizes ranging from approximately 20 nm to 50 nm. 61–63 A higher magnification image of individual carbon black particles in Pt 1 Ru x @C (Fig. 2b) revealed that the loaded particles had a size distribution concentrated around 1.0 nm to 1.8 nm ( d = 1.45 nm) and exhibited uniform dispersion.…”

Boosting Antibacterial Photodynamic Therapy in a Nanosized Zr MOF by the Combination of Ag NP Encapsulation and Porphyrin Doping

“…The binding energies of 368.2 and 374.2 eV correspond to Ag 3d 5/2 and Ag 3d 3/2 , respectively. Additionally, the difference of binding energy between the double peaks is 6.0 eV, indicating that Ag species in UiO-66-(SH) 2 @TCPP@AgNPs is metallic silver. , ICP results of UiO-66-(SH) 2 @TCPP@AgNPs are shown in Table S1. The Ag and S contents in UiO-66-(SH) 2 @TCPP@AgNPs are 7.4 and 18.4%, respectively, which indicates that the atomic ratio of Ag to S is 0.12.…”