Polydopamine/montmorillonite-embedded pullulan hydrogels as efficient adsorbents for removing crystal violet

Qi, Xiao-Liang; Zeng, Qiankun; Tong, Xianqin; Su, Ting; Xie, Lei; Yuan, Kai; Xu, Jianxiong; Shen, Jianliang

doi:10.1016/j.jhazmat.2020.123359

Cited by 134 publications

(57 citation statements)

References 49 publications

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“…This is consistent with the results of a previous study where the adsorption kinetics of Cu(II) on PD hydrogels were suitably modeled by the PSO model [18]. Similar results were obtained for the adsorption of Malachite green on a polycarboxilic acid magnetic polydopamine microspheres [58] and for the adsorption of Crystal violet on an adsorbent prepared by incorporation of polydopamine and montmorillonite into a hydrogel matrix [59]. The fitted model parameter n in the PNO model (n = 2.0; Fig.…”

Section: Modelling the Kinetics Of Cu(ii) Adsorption On Pd-xad7supporting

confidence: 90%

Modelling the kinetics of direct Cu(II) adsorption on two porous resins modified with mussel-inspired chemistry

Bişgin

Gezici

2021

J Polym Res

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Two synthetic resins (i.e. Dowex Optipore V493 (DOV493) and XAD7) were subjected to a physical surface modification with mussel-inspired chemistry. Kinetics of direct Cu(II) adsorption were studied and the experimental data were modeled according to some adsorption kinetic models. The studied kinetic models suggested (i) diffusion-controlled and (ii) adsorption-controlled mechanisms for the direct adsorption of Cu(II) on PD-DOV493 and PD-XAD7, respectively. Regardless of the rate-limiting step, the studied two polymeric resins (i.e. DOV493 and XAD7) could be converted to new forms capable of binding Cu(II), which in their original form is impossible. Equilibrium adsorption capacities around 70 µg/g and 500 µg/g were determined to be accessible for PD-DOV493 and PD-XAD7, respectively, at relatively low initial Cu(II) concentrations (i.e. ~ 1-3 ppm). It is believed that the obtained results will be useful for understanding the nature of heavy metal adsorption kinetics on PDcoated porous polymeric resins.

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Section: Modelling the Kinetics Of Cu(ii) Adsorption On Pd-xad7supporting

confidence: 90%

Modelling the kinetics of direct Cu(II) adsorption on two porous resins modified with mussel-inspired chemistry

Bişgin

Gezici

2021

J Polym Res

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“…The fitting results of the internal diffusion models showed that the adsorption process may be divided into several stages (Figure D). Strobilurins may first be transferred from the aqueous phase to the surface of the MPs, followed by diffusion into the interior of MPs through the pore filling …”

Section: Resultsmentioning

confidence: 99%

Effects of Microplastics on the Adsorption and Bioavailability of Three Strobilurin Fungicides

Hai

et al. 2020

ACS Omega

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Microplastics (MPs) and fungicides have been recognized as two main pollutants in ecological environments, especially in aqueous ecosystems. In this study, the adsorption behavior of three typical strobilurins (azoxystrobin, picoxystrobin, and pyraclostrobin) on polystyrene (PS) and polyethylene (PE) was investigated, and the effects of adsorption on the residual behavior and bioavailability of pyraclostrobin were evaluated. The results showed that MPs had strong adsorption capacity for the three kinds of strobilurins. Under similar conditions, the adsorption capacity was the highest for pyraclostrobin, followed by picoxystrobin and azoxystrobin, which was consistent with their octanol−water partition coefficients. Moreover, the adsorption capacity of PS was slightly higher than that of PE. The pH of aqueous solution had little effect on adsorption capacity, while an increase in ionic strength increased the adsorption capacity of azoxystrobin and picoxystrobin. The Fourier transform infrared spectra of MPs showed that no new chemical groups were formed during the adsorption process. Thus, it is speculated that hydrophobic interactions may be the driving force behind the adsorption of strobilurins on the MPs. Additionally, the adsorption of pyraclostrobin on MPs significantly reduced its residual amount in the aqueous solution, which reduced the adsorption and bioavailability of pyraclostrobin in black bean seedlings. The study provides effective information for environmental safety risk assessments with regard to the combined pollution risks of MPs and strobilurins.

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“…SEM and TEM images showed the relative uniformity of PDA, the smoothed surfaced XK, and the dotted representation of PDA in XKP Fig. 12 b [ 112 , 162 , 163 ]. Fabricated XKP0.5, XKP1 & XKP2 exhibited effective photothermal properties following 10 min exposure to 808 nm NIR laser which revealed an increase in temperature to the concentration of PDA present (0.5, 1, and 2 mg/L) Fig.…”

Section: Dissipation Of Antibacterial/antimicrobial Effectmentioning

confidence: 99%

Polydopamine, harness of the antibacterial potentials-A review

Obeng

Sun

et al. 2022

Materials Today Bio

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Polydopamine/montmorillonite-embedded pullulan hydrogels as efficient adsorbents for removing crystal violet

Cited by 134 publications

References 49 publications

Modelling the kinetics of direct Cu(II) adsorption on two porous resins modified with mussel-inspired chemistry

Modelling the kinetics of direct Cu(II) adsorption on two porous resins modified with mussel-inspired chemistry

Effects of Microplastics on the Adsorption and Bioavailability of Three Strobilurin Fungicides

Polydopamine, harness of the antibacterial potentials-A review

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