Effective removal of metal ions and cationic dyes from aqueous solution using different hydrazine–dopamine modified sodium alginate

Shi, Tianzhu; Xie, Zhenzhen; Zhu, Zhu; Shi, Wei; Liu, Yucheng; Liu, Minyao; Mo, Xinliang

doi:10.1016/j.ijbiomac.2021.12.039

Cited by 10 publications

(4 citation statements)

References 85 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reason for the decrease of adsorption capacity is ascribed to the cations in the solution that are adsorbed to the adsorption sites on the negatively charged adsorbent surface. 44 This confirmed that the adsorption of MB onto ZIF-67- n HPW was mainly through electrostatic attractions.…”

Section: Resultssupporting

confidence: 59%

“…The result exhibited that the existence of salt ions has a negative effect on electrostatic adsorption, leading to a little decrease in the adsorption of cationic dyes. The reason for the decrease of adsorption capacity is ascribed to the cations in the solution that are adsorbed to the adsorption sites on the negatively charged adsorbent surface . This confirmed that the adsorption of MB onto ZIF-67- n HPW was mainly through electrostatic attractions.…”

Section: Resultsmentioning

confidence: 82%

See 1 more Smart Citation

Integration of Phosphotungstic Acid into Zeolitic Imidazole Framework-67 for Efficient Methylene Blue Adsorption

Shang

Chen

et al. 2022

ACS Omega

View full text Add to dashboard Cite

To enhance the dye adsorption capacity of zeolitic imidazolate framework-67 (ZIF-67), phosphotungstic acid (HPW) was integrated into ZIF-67 to prepare composite adsorbents. Characterization results demonstrated that the electronegative HPW was uniformly and tightly deposited on the electropositive ZIF-67. Methylene blue (MB) was selected as a model contaminant to evaluate the adsorption performance of hybrid adsorbents. Results showed that HPW@ZIF-67 had excellent adsorption capacity toward cationic MB. The optimal ZIF-67-0.2 HPW sample with a HPW dosage of 9.9 wt % presented an adsorption capacity of 446.4 mg g –1 . ZIF-67-0.2 HPW displayed good reusability, and the adsorption data can be well described by pseudo-second order and Langmuir isotherm models. The adsorption mechanism was ascribed to the preferred electrostatic attraction and π–π stacking between MB and composite adsorbents. This work provides a route to enhance organic dye removal efficiency of ZIF materials through regulation of surface charge property and sheds light on the development of ZIF-based adsorbents.

show abstract

Section: Resultssupporting

confidence: 59%

Section: Resultsmentioning

confidence: 82%

Integration of Phosphotungstic Acid into Zeolitic Imidazole Framework-67 for Efficient Methylene Blue Adsorption

Shang

Chen

et al. 2022

ACS Omega

View full text Add to dashboard Cite

show abstract

“…The ΔH > 0 indicated that increasing the temperature increased the resultful collision efficiency between heavy metals, dyes, and FSAH, which promoted diffusion in the microchannels inside, improved adsorption ability to adsorb heavy metals which were very advantageous to adsorption. The ΔS > 0 showed that solute adsorption was accompanied by solvent desorption in the adsorption process; the former process was accompanied by a loss in entropy, whereas the latter process increased entropy [ 37 ]. At various temperatures, the ΔG θ < 0, adsorption processes were viable and spontaneous.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, ethylene glycol (5 mL) was used to terminate reaction, the product was washed 3 times with a mixture of ethanol and water (v/v = 5:4), and finally, DSA was vacuum-dried [ 47 ]. Using an automatic potentiometric titrator and the hydroxylamine hydrochloride method, the oxidation degree (OD) of DSA was determined by potentiometric titration for the detection of aldehyde groups [ 22 , 37 ], and the OD of DSA is 64.28%.…”

Section: Methodsmentioning

confidence: 99%

Highly Efficient Adsorption of Heavy Metals and Cationic Dyes by Smart Functionalized Sodium Alginate Hydrogels

Shi

Xie

Mo³

et al. 2022

Gels

Self Cite

View full text Add to dashboard Cite

In this paper, functionalized sodium alginate hydrogel (FSAH) was prepared to efficiently adsorb heavy metals and dyes. Hydrazide-functionalized sodium alginate (SA) prepared hydrazone groups to selectively capture heavy metals (Pb2+, Cd2+, and Cu2+), and another functional group (dopamine grafting), serves as sites for adsorption methylene blue (MB), malachite green (MG), crystal violet (CV). Thermodynamic parameters of adsorption indicated that the adsorption process is endothermic and spontaneous. The heavy metals adsorption by FSAH was physical adsorption mainly due to ΔHθ < 40 kJ/mol, and the adsorption of cationic dyes fitted with the Langmuir models, which indicated that the monolayer adsorption is dominated by hydrogen bonds, electrostatic interactions, and π-π interactions. Moreover, the adsorption efficiency maintained above 70% after five adsorption-desorption cycles. To sum up, FSAH has great application prospect.

show abstract

Nanocellulose-stabilized nanocomposites for effective Hg(II) removal and detection: a comprehensive review

Chinnappa,

Bai,

Srinivasan

2024

Environ Sci Pollut Res

View full text Add to dashboard Cite

Effective removal of metal ions and cationic dyes from aqueous solution using different hydrazine–dopamine modified sodium alginate

Cited by 10 publications

References 85 publications

Integration of Phosphotungstic Acid into Zeolitic Imidazole Framework-67 for Efficient Methylene Blue Adsorption

Integration of Phosphotungstic Acid into Zeolitic Imidazole Framework-67 for Efficient Methylene Blue Adsorption

Highly Efficient Adsorption of Heavy Metals and Cationic Dyes by Smart Functionalized Sodium Alginate Hydrogels

Nanocellulose-stabilized nanocomposites for effective Hg(II) removal and detection: a comprehensive review

Contact Info

Product

Resources

About