Design of Graphene- and Polyaniline-Containing Functional Polymer Hydrogel as a New Adsorbent for Removal of Chromium (VI) Ions
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Preparation of G/PANI/FG
2.2.1. Preparation of G/P(AMPS-co-AA)
2.2.2. PANI Modification on G/P(AMPS-co-AA)/PANI/FG
2.3. Instrumentation
2.4. Experiments for Removal of Cr (VI)
2.5. Reproducibility
3. Results and Discussion
3.1. Morphology
3.2. FTIR Studies
3.3. Thermogravimetric Analysis (TGA)
3.4. Adsorption Kinetics of Cr (VI)
3.5. Mechanism of Cr (VI) Adsorption
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Feed composition of the gel in stage I | Precursor gel | Further inclusion stage II | Final gel designation |
---|---|---|---|
G (10 mg), AA (1.125 M) and AMPS (0.125 M) | G/P(AMPS-co-AA) | PANI | G/PANI/FG1 |
G (10 mg) and AA (1.125 M) | G/* PAA | PANI | G/PANI/FG2 |
G (10 mg) and AMPS (0.125 M) | G/** PAMPS | PANI | G/PANI/FG3 |
AA (1.125 M) and AMPS (0.125 M) | P(AMPS-co-AA) | PANI | PANI/*** GNG |
Area (%) | ||
---|---|---|
Before Cr (VI) adsorption | After Cr (VI) adsorption | |
C=N+ | 18.09 | 52.23 |
C–N | 73.25 | 30.34 |
C=N | 08.65 | 17.41 |
* imine/amine ratio | 0.365 | 6.27 |
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Chin, J.-S.; Gopalan, A.-I.; Muthuchamy, N.; Lee, K.-P. Design of Graphene- and Polyaniline-Containing Functional Polymer Hydrogel as a New Adsorbent for Removal of Chromium (VI) Ions. Polymers 2016, 8, 445. https://doi.org/10.3390/polym8120445
Chin J-S, Gopalan A-I, Muthuchamy N, Lee K-P. Design of Graphene- and Polyaniline-Containing Functional Polymer Hydrogel as a New Adsorbent for Removal of Chromium (VI) Ions. Polymers. 2016; 8(12):445. https://doi.org/10.3390/polym8120445
Chicago/Turabian StyleChin, Jae-Seo, Anantha-Iyengar Gopalan, Nallal Muthuchamy, and Kwang-Pill Lee. 2016. "Design of Graphene- and Polyaniline-Containing Functional Polymer Hydrogel as a New Adsorbent for Removal of Chromium (VI) Ions" Polymers 8, no. 12: 445. https://doi.org/10.3390/polym8120445