Synthesis and characterization of a new starch/SnO2 nanocomposite for efficient adsorption of toxic Hg2+ metal ion

Naushad, Mu.; Ahamad, Tansir; Sharma, Gaurav; Al-Muhtaseb, Ala’a H.; Albadarin, Ahmad B.; Alam, Mohammad Mumtaz; ALOthman, Zeid A.; Alshehri, Saad M.; Ghfar, Ayman A.

doi:10.1016/j.cej.2016.04.084

Cited by 358 publications

(81 citation statements)

References 52 publications

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“…This behavior could be explained due to the fact that further available sorption sites on the WICF were found to be limited, hence, resulting in the decrease of the overall adsorption percentage. Similar findings have been reported elsewhere (Naushad et al, 2016;Soliemanzadeh & Fekri, 2017;.…”

Section: Effect Of Initial Concentration Of Patulin On Patulin Adsosupporting

confidence: 93%

Assessment of patulin adsorption efficacy from aqueous solution by water‐insoluble corn flour

Guo

Zhang

et al. 2017

Journal of Food Safety

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This study investigated water-insoluble corn flour (WICF) as a novel biosorbent for removing patulin from aqueous solutions, including contaminated fruit juices. Batch adsorption experiments were performed to assess the effect of granularity of WICF, adsorbent dosage, contact time, temperature, pH, and initial patulin concentration. The results showed that the maximum removal percentage of 92.21% was achieved at 37 8C, pH value of 4.0 in 100 mg/L patulin concentration for 25 hr. The adsorption data could be well fitted with the Freundlich isotherm model and the pseudo-first order model. Thermodynamic parameters indicated that mycotoxin adsorption is an endothermic and spontaneous process. Subsequently, scanning electron microscopy images showed obvious morphological changes in WICF after adsorbing patulin. Fourier transform infrared spectroscopy spectroscopic evidence demonstrated that the main functional groups involved in the adsorption were O-H, C 5 O and C-O groups. Practical applicationsPatulin was found as a contaminant in various fruit juices, which raised serious concerns about developing an effective and cheap adsorbent for detoxification of patulin toxin in fruit juice and their products. Water-insoluble corn flour was applied to strengthen the control of patulin for the first time. Results of this study indicated that water-insoluble corn flour has a strong ability to remove patulin from aqueous solutions and various fruit juices. Therefore, using water-insoluble corn flour as an adsorbent and combining the filtration process could be potentially applied in fruit juice industry for detoxification of patulin.

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Section: Effect Of Initial Concentration Of Patulin On Patulin Adsosupporting

confidence: 93%

Assessment of patulin adsorption efficacy from aqueous solution by water‐insoluble corn flour

Guo

Zhang

et al. 2017

Journal of Food Safety

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“…The characteristic peak of chloric alkyl in Pc-QAE by the intense vibration of band can be seen at 650cm -1 [31].The intense vibration band region at 1400-1500 cm −1 indicated that large number of amino groups have been grafted onto the Pectin back bone [36,40]. The peak at 2974 cm -1 was associated with the special vibration of C-H aliphatic in pectin [42,51]. The peak at 1630 cm -1 showed free (-COO) carboxyl group of pectin.…”

Section: Characterizationmentioning

confidence: 99%

Efficient removal of toxic phosphate anions from aqueous environment using pectin based quaternary amino anion exchanger

Naushad

Sharma

Kumar

et al. 2018

International Journal of Biological Macromolecules

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128

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Pectin based quaternary amino anion exchanger (Pc-QAE) was prepared using simple crosslinking polymerization method. This anion exchanger was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Pc-QAE was applied for the removal of phosphate anion from the aqueous solution. The adsorption process which was pH dependent showed maximum adsorption of phosphate anions at pH 7. Pc-QAE showed good monolayer adsorption capacity for phosphate anions which demonstrated its good capability towards Langmuir isotherm model. Moreover, the adsorption was evaluated thermodynamically and the negative value of Gibbs free energy (-1.791KJ/mol) revealed the spontaneity of adsorption process. The value of ΔH° and ΔS° were found to be 15.28 and 49.48KJ/mol, respectively representing the endothermic nature and enhancement in degree of freedom due to the adsorption process.

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“…The nanocomposite hydrogels were methodically mixed with KBr and were then powdered. A pressure of about 80,000 psi was applied to make a transparent disk and it was then completely characterized to find the type of functional groups present [33].…”

Section: Fourier Transform Infrared (Ftir) Spectroscopymentioning

confidence: 99%

Fabrication and characterization of a nanocomposite hydrogel for combined photocatalytic degradation of a mixture of malachite green and fast green dye

Sharma

ALOthman

Kumar

et al. 2017

Nanotechnol. Environ. Eng.

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In this study, starch/poly(alginic acid-cl-acrylamide)/Fe/Zn nanocomposite hydrogel (ST/PL(AA-clAAm)/Fe/Zn NCHG) was synthesized by polymerization/ co-precipitation method. This nanocomposite hydrogel was prepared with the notion to remove the mixture of organic pollutants from the water system. Mixture of malachite green and fast green dye was used to check the photocatalytic degradation ability of the prepared nanocomposite hydrogel. ST/PL(AA-cl-AAm)/Fe/Zn NCHG was characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy and Fourier transform infrared. The degradation of the two dyes followed the pseudo-first-order kinetics. The results showed that by using the prepared nanocomposite hydrogel, 91% of malachite green and 82% of fast green dye, respectively, were degraded within 5 h of their contact.

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Synthesis and characterization of a new starch/SnO2 nanocomposite for efficient adsorption of toxic Hg2+ metal ion

Cited by 358 publications

References 52 publications

Assessment of patulin adsorption efficacy from aqueous solution by water‐insoluble corn flour

Assessment of patulin adsorption efficacy from aqueous solution by water‐insoluble corn flour

Efficient removal of toxic phosphate anions from aqueous environment using pectin based quaternary amino anion exchanger

Fabrication and characterization of a nanocomposite hydrogel for combined photocatalytic degradation of a mixture of malachite green and fast green dye

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