Silver nanoparticle loaded silica adsorbent for wastewater treatment

Thamilselvi, V.; Radha, K. V.

doi:10.1007/s11814-017-0075-4

Cited by 15 publications

(5 citation statements)

References 39 publications

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“…The BET surface area for 1% PVC@SiO 2 nanocomposite was 458.4 m 2 /g and the pore volume was 0.91 cc/g. The more loading of the nano-silica, a decrease in surface area to 277.1 m 2 /g was observed due to the filling of pores of the PVC with the nano-silica structure and this was in accordance with Thamilselvi and Radha study 55 . Silica nanoparticle loaded PVC showed further decrease in surface area to 276.9 m 2 /g and 208.9 m 2 /g for increasing the loaded nano-silica to 3% and 4%.…”

Section: Bet Surface Area Of Pvc@sio 2 Nanocompositesupporting

confidence: 88%

Exploration of PVC@SiO2 nanostructure for adsorption of methylene blue via using quartz crystal microbalance technology

Ali,

Hassan,

Ismail

et al. 2023

Sci Rep

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Methylene blue (MB) dye is considered a well-known dye in many industries and the low concentration of MB is considered very polluted for all environment if it discharged without any treatment. For that reason, many researchers used advanced technologies for removing MB such as the electrochemical methods that considered very simple and give rapid response. Considering these aspects, a novel quartz crystal microbalance nanosensors based on different concentrations of PVC@SiO2 were designed for real-time adsorption of MB dye in the aqueous streams at different pHs and different temperatures. The characterization results of PVC@SiO2 showed that the PVC@SiO2 have synthesized in spherical shape. The performance of the designed QCM-Based PVC@SiO2 nanosensors were examined by the QCM technique. The sensitivity of designed nanosensors was evaluated at constant concentration of MB (10 mg/L) at different pHs (2, 7 and 11) and temperatures (20 °C, 25 °C, and 30 °C). From the experimental, the best concentration of PVC@SiO2 was 3% for adsorbed 9.99 mg of cationic methylene blue at pH 11 and temperature 20 °C in only 5.6 min.

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Section: Bet Surface Area Of Pvc@sio 2 Nanocompositesupporting

confidence: 88%

Exploration of PVC@SiO2 nanostructure for adsorption of methylene blue via using quartz crystal microbalance technology

Ali,

Hassan,

Ismail

et al. 2023

Sci Rep

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“…The calculated separation factor (R L ) of 2.41 × 10 −17 for E. coli adsorption on TM@ZnO/TMC NC hydrogel further suggests for the monolayer coverage process to be the dominating adsorption mechanism [55]. This finding followed similar other findings with the adsorption of E. coli onto NPs fitting well with the Langmuir isotherm model [53,[56][57][58]. The lower values of R 2 derived for Freundlich isotherm implied lesser applicability of adsorption onto a heterogeneous adsorbent surface and multilayered adsorption as, evidently described by the lower values of 1/n (−0.4929).…”

Section: Studies Of Adsorption Isothermsupporting

confidence: 84%

Biosorption of Escherichia coli Using ZnO-Trimethyl Chitosan Nanocomposite Hydrogel Formed by the Green Synthesis Route

Bwatanglang,

Mohammad,

Janet

et al. 2023

Gels

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In this study, we tested the biosorption capacity of trimethyl chitosan (TMC)-ZnO nanocomposite (NC) for the adsorptive removal of Escherichia coli (E. coli) in aqueous suspension. For the formation of ZnO NPs, we followed the green synthesis route involving Terminalia mantaly (TM) aqueous leaf extract as a reducing agent, and the formed ZnO particles were surface-coated with TMC biopolymer. On testing of the physicochemical characteristics, the TM@ZnO/TMC (NC) hydrogel showed a random spherical morphology with an average size of 31.8 ± 2.6 nm and a crystal size of 28.0 ± 7.7 nm. The zeta potential of the composite was measured to be 23.5 mV with a BET surface area of 3.01 m2 g−1. The spectral profiles of TM@ZnO/TMC NC hydrogel on interaction with Escherichia coli (E. coli) revealed some conformational changes to the functional groups assigned to the stretching vibrations of N-H, C-O-C, C-O ring, and C=O bonds. The adsorption kinetics of TM@ZnO/TMC NC hydrogel revealed the pseudo-second-order as the best fit mechanism for the E. coli biosorption. The surface homogeneity and monolayer adsorption of the TM@ZnO/TMC NC hydrogel reflects majorly the entire adsorption mechanism, observed to display the highest correlation for Jovanovic, Redlich–Peterson, and Langmuir’s isotherm models. Further, with the use of TM@ZnO/TMC NC hydrogel, we measured the highest adsorption capacity of E. coli to be 4.90 × 10 mg g−1, where an in-depth mechanistic pathway was proposed by making use of the FTIR analysis.

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“…A peak observed at 2400 cm À1 corresponded to the carbonyl group, which is evidence of the effective attachment of the Si-NH 2 QDs to the AuNPs. 33,34 Fig. S10 † demonstrates the FTIR spectrum of the cit-AuNPs-MPA/Si-NH 2 QDs/Con A NPs.…”

Section: Resultsmentioning

confidence: 99%

Concanavalin A-conjugated gold nanoparticle/silica quantum dot (AuNPs/SiQDs-Con A)-based platform as a fluorescent nanoprobe for the bioimaging of glycan-positive cancer cells

et al. 2022

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Silver nanoparticle loaded silica adsorbent for wastewater treatment

Cited by 15 publications

References 39 publications

Exploration of PVC@SiO2 nanostructure for adsorption of methylene blue via using quartz crystal microbalance technology

Exploration of PVC@SiO2 nanostructure for adsorption of methylene blue via using quartz crystal microbalance technology

Biosorption of Escherichia coli Using ZnO-Trimethyl Chitosan Nanocomposite Hydrogel Formed by the Green Synthesis Route

Concanavalin A-conjugated gold nanoparticle/silica quantum dot (AuNPs/SiQDs-Con A)-based platform as a fluorescent nanoprobe for the bioimaging of glycan-positive cancer cells

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