Preparation of poly(GMA-co-PEGDA) microbeads modified with iminodiacetic acid and their indium adsorption properties

Synthesis of chitosan-based hydrogel by using photopolymerization technique

“…It is also notable that the band 1557 cm -1 corresponding to C=C stretching disappears due to the insertion of the acrylate groups of PEGDA to CTS-g-GMA during photopolymerization process in (CTS-g-GMA)-PEGDA. Additionally, as shown in IR spectrum of the (CTS-g-GMA)-PEGDA, the crucial peaks of PEGDA could be displayed, which are at 2916 cm -1 for alkyl-CH stretching, and at 1160 cm -1 for the ether (-C-O-C-) group [21,23]. Additionally, the intensive of peak at the 2994 cm -1 corresponding CH 2 vibrational mode was decreased that indicates that there was reaction between CH 2 groups of CTS-g-GMA and PEGDA.…”

“…The spectra of CTS-g-GMA and (CTS-g-GMA)-PEGDA demonstrated some changes when compared to the pure chitosan, as observed in Figure 1 and Figure 2. For the CTS-g-GMA spectrum, the peaks at 1557 cm -1 and 1635 cm -1 correspond to C=C stretching and C=O vibration indicating the success of grafting of glycidyl methacrylate onto the chitosan structure [4,19,22] For the (CTS-g-GMA)-PEGDA spectrum, the band at 1732 cm −1 clearly showed the presence of the carbonyl group of PEGDA owing to photopolymerization of CTS-g-GMA and PEGDA for the fabrication of chitosan-based hydrogel [23]. It is also notable that the band 1557 cm -1 corresponding to C=C stretching disappears due to the insertion of the acrylate groups of PEGDA to CTS-g-GMA during photopolymerization process in (CTS-g-GMA)-PEGDA.…”

Iminodiacetic acid functionalized polypyrrole modified electrode as Pb(II) sensor: Synthesis and DPASV studies

“…It has been reported that iminodiacetic acid is likely to bind to a range of other divalent metal ions [28,[33][34][35]. The IDA-PPy coated electrode was hence tested by DPASV analysis for some other divalent metal ion systems, such as CuCl 2 , Cd(NO 3 ) 2 , CoCl 2 , Hg(NO 3 ) 2 , NiCl 2 and ZnCl 2 , using solutions of 1 × 10 −6 M concentration and below in all cases.…”

Synthesis and application of a surface-grafted In (III) ion-imprinted polymer for selective separation and pre-concentration of indium (III) ion from aqueous solution

“…A wide range of studies on ways for indium recovery have been reported in recent years, including solvent extraction (Yang et al, 2013), chemical precipitation (Limin et al, 2011), ion-exchange (Kwak et al, 2012), adsorption (Hwang et al, 2013), nanofiltration membranes (Wu et al, 2004), chemical reduction (He et al, 2014), solid-phase extraction (Tokuyama and Iwama, 2009) and electroanalytical techniques (Medvecký and Briančin, 2004). Among them, the adsorption technology is widely considered as one of the best dependable and effective methods due to its simplicity, low recovery cost and high efficiency.…”

“…However, indium considered as one of the most important rare metals is widely dispersed in nature and so far no minerals containing indium as a major component has also found (Adhikari et al, 2012;Li et al, 2012). In addition, indium (III) ion in aqueous solution is suspected to be carcinogenic to human beings and it has been confirmed about indium that it can induce cytotoxicity in certain animal experiments (Hwang et al, 2013). Hence the efforts to find methods to recover or recycle indium are of great significance.…”