Preparation of cationic polymeric nanoparticles as an effective adsorbent for removing diclofenac sodium from water

Abstract

New cationic polymeric nanoparticles were synthesised with high adsorption capacities for diclofenac sodium and showed fast adsorption and desorption.

Molecularly Imprinted Polymer Colloids Synthesized by Miniemulsion Polymerization for Recognition and Separation of Nonylphenol

“…Table 2). This value, far beyond values previously reported in other studies 41,45 [80][81][82] Here, the interaction of NP with imprinted and non-imprinted polymer particles was investigated in mixture of ethanol/water 50/50 (v/v) at 25°C. ITC allows to measure the enthalpic contribution of NP binding and the association constant (K A ).…”

“…ITC is a very sensitive technique based on heat change detection occurring in ligand–receptor interactions. ITC has already been successfully applied to MIP characterization. − Here, the interaction of NP with imprinted and nonimprinted polymer particles was investigated in a mixture of ethanol/water 50/50 (v/v) at 25 °C. ITC allows us to measure the enthalpic contribution of NP binding and the association constant ( K A ).…”

The Interactions Between Three Typical PPCPs and LDH

“…The zeta potential of Cl-LDH was 36.2 mV, indicating that Cl-LDH had a good dispersity in water (Liu et al, 2017 ; Li et al, 2018 ). The DLS method resembled the size distribution of Cl-LDH in the range of 200–620 nm.…”

“…The adsorption capacity at pH-values lower than the pKa (4.2) of DF was smaller than that at pH of 5.0, because DF was in the form of neutral molecules (–COOH) (Liu et al, 2017 ; Sun et al, 2017 ) and the structure of DF was given in Figure 3C . On increasing the pH from 5.0 to 9.0, the adsorption capacity reached maximum and kept constant due to DF in the form of anions (–COO − ) at pH > pKa, finally decreased at pH > 9.0.…”

Fluoropolymer Nanoparticles Prepared Using Trifluoropropene Telomer Based Fluorosurfactants

“…The importance of nanoparticles in modern science and engineering has received increasing attention because of their wide variety of applications. , According to their composition, nanoparticles can be categorized as inorganic and organic, where inorganic nanoparticles can be prepared from a wide range of inorganic materials including metals, alloys, semiconductors, and ceramics. Inorganic nanoparticles are applied in many fields, including catalysis, environmental remediation, and cancer therapy. − For organic nanoparticles, the field of polymer nanoparticles (PNPs), composed of synthetic or natural polymers, has grown quickly over the past few decades and has played a key role in the development of electronics, sensors, medicine, biotechnology, pollution control, and environmental technology. − PNPs can be prepared from preformed polymers via solvent evaporation, dialysis, and supercritical fluid technology or from monomers using various polymerization techniques including microemulsion, mini-emulsion, and interfacial polymerization. − Compared to conventional PNPs, nanoparticles composed of fluoropolymers exhibit unique properties. For example, fluoropolymer nanoparticles are more tolerant to high temperatures, solvents, ultraviolet radiation, acid or base corrosion, and other extreme conditions. , This tolerance arises from the high dissociation energy of the C–F bond (>116 kcal/mol) compared to that of C–H (approximately 99 kcal/mol).…”