Effect of green synthesized silver nanoparticles on optical behavior of feldspathic porcelain

Synthesis of Fe3+/Ce3+-doped poly(para-phenylenediamine) adsorbents and their application in the removal of fluorides, arsenites and pathogens from water

“…The Dubinin-Radushkevich (D-R) model (eqn (10)) was used to determine and assess how the solute interacted with the adsorbent. D-R is a general model that suggests the porosity and adsorption energy of an adsorbent.…”

“…ln q e = ln q o − β e 2 (10) where q e is the quantity of ions adsorbed per unit weight of adsorbent (mg g −1 ), q o is the maximum adsorption capacity, β is the activity coefficient, which is useful in obtaining the mean sorption energy E (kJ mol −1 ), and ε is the Polanyi potential. ε and E are expressed by eqn (11) and (12), respectively, as follows:…”

“…7,8 Among them, adsorption is favoured because of its environmental stability and flexible operation, design, and lower cost. Various materials such as adsorbents doped with transition metals 9 (Fe, Al, Ce, and Ni), 9,10 clay soils, 11 conjugated polymers, activated carbon, and agricultural waste have been developed and used for water purification. 12 Transition metals such as Fe, Ti, and Co elements have emerged as promising materials for the removal of F − and As 3+ from water solution due to their high adsorption efficiency.…”

Green synthesis of silver nanoparticles and evaluation of their effects on the Porphyromonas gingivalis bacterial biofilm formation

“…In recent years, the growing emphasis on biocompatibility, low toxicity, and environmental friendliness has propelled the popularity of biosynthesis or green synthesis of nanoparticles. The utilization of natural materials like fungi (Honary et al, 2013 ), bacteria (Truong et al, 2022 ), algae (Chugh et al, 2021 ), and plant extracts (Firoz et al, 2022 ; Habibipour et al, 2019 ; Varadharaj et al, 2020 ) for AgNPs synthesis presents several advantages, including reduced energy consumption, manageable technology prerequisites, and the absence of harmful chemicals (Khan et al, 2022 ). Biological methods are inherently more eco‐friendly than their chemical and physical counterparts, primarily due to factors like the avoidance of hazardous byproducts, the utilization of biological entities as reducing agents, and their lower energy demands.…”

“…This eliminates the requirement for toxic chemicals to function as capping agents. The approach of synthesizing metallic AgNPs using plant‐derived extracts, which can be sourced from leaves, roots, or stems, represents an eco‐friendly, uncomplicated method that encounters minimal economic and environmental barriers (Firoz et al, 2022 ; Sabri et al, 2016 ). It appears that the nanoparticle synthesis method using propolis is cost‐effective, biocompatible, and a simple alternative to conventional synthesis methods.…”