Arsenite remediation by an amine-rich graphitic carbon nitride synthesized by a novel low-temperature method

Hybrid [polysulfone–Zero Valent Iron] membranes: Synthesis, characterization and application for AsIII remediation

“…A rational design strategy implicated here is based on the observation that in natural waters As III is predominantly in the H 3 AsO 3 0 species form [10,27]. This neutral species has been shown by many researchers [27,28] including our group [29] to be preferably adsorbed by neutral surface sites on adsorbing materials [27,29,30]. Thus, in the present work we have manufactured a hybrid polysulfone/ZVI membrane where the polysulfone constitutes a strongly reducing/electron rich bed, where ZVI particles are hosted.…”

“…The concentration of As III in aqueous solution was determined by square-wave Cathodic Stripping Voltammetry (SW-CSV) using a Trace Master5-MD150 polarograph by Radiometer Analytica as detailed previously [29]. CSV is well suited for analytical determination of trace amounts (ppb level) of As III [29], and in our set up we routinely achieve a detection limit, of 0.5 lg L À1 [29].…”

“…CSV is well suited for analytical determination of trace amounts (ppb level) of As III [29], and in our set up we routinely achieve a detection limit, of 0.5 lg L À1 [29]. The measuring cells were borosilicate glass cells obtained from Radiometer.…”

“…In addition, we have studied by EPR, the adsorption of Cu II ions on the polysulfone i.e. using Cu-atoms as local structure probes of the metal-binding site on the material [29]. The hybrid polysulfone/ZVI membranes were characterized by scanning electron microscopy (SEM-EDX), X-ray diffraction (XRD), thermo-gravimetric analysis (TGA)/differential thermal analysis (DTA), Mercury intrusion porosity measurements.…”

Characterization of urea derived polymeric carbon nitride and resultant thermally vacuum deposited amorphous thin films: Structural, chemical and photophysical properties

“…Additionally, low temperature synthesis methods of p-CN are constantly developed e.g. solvolysis [39]. Synthesis of p-CN via thermal decomposition of urea is particularly attractive as a low-cost and scalable.…”