Mildly Alkaline Preparation and Methylene Blue Adsorption Capacity of Hierarchical Flower-like Sodium Titanate

Mao, Feng; Yan, Wen; Zeng, Wu; Cai, Daoping; Zhan, Hongbing

doi:10.1021/am404011k

Cited by 113 publications

(75 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is well known that many dyes and pigments are inert, toxic and difficult to biodegrade when discharged into waste streams. In addition to be being a health threat, the presence of dyes and pigments in water is highly visible and affects the water transparency, resulting in reduction of light penetration, and oxygen gas solubility in water [2][3][4]. Thus, removal of such toxic dyes from the wastewater is a crucial issue.…”

Section: Introductionmentioning

confidence: 99%

MIL-68 (In) nano-rods for the removal of Congo red dye from aqueous solution

Jin

Qian

Wang

et al. 2015

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

MIL-68 (In) nano-rods for the removal of Congo red dye from aqueous solution

Jin

Qian

Wang

et al. 2015

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…The final mixture was stirred continuously for 30 min at room temperature. Subsequently, the mixture was transferred into a Teflon-lined stainless steel autoclave and then hydrothermally heated at 130 °C for 8.0 h. Lastly, the precipitates of flower-like ZnO particles (FL-ZnO) were separated by centrifuge, washed several times with pure water until the pH of the washing water became 7.0, dried in an oven at 80 °C, and stored in closed vessels in a refrigerator at +4 o C for the further studies [10]. The hydrothermally synthesized flower-like ZnO particles (FL-ZnO) were characterized by X-ray Diffractometer (XRD-Philips XPert, Netherlands), Scanning Electron Microscope (SEM-Zeiss/Supra 55, Germany), Energy Dispersive X-ray Spectroscopy (EDX-Zeiss/Supra 55, Germany).…”

Section: Methodsmentioning

confidence: 99%

Synthesis and Characterization of Hierarchical Flower-Like ZnO Particles as Effective Adsorbent and Antibacterial Agent

Karagöz¹,

Mersin²,

Uzunoğlu³

et al. 2017

IJCEA

View full text Add to dashboard Cite

Abstract-In present work, hierarchical flower-like ZnO particles (FL-ZnO) were synthesized by organic-free hydrothermal route. The hexagonal structure and the formation of flower-like structure of FL-ZnO were observed by XRD and SEM analysis, respectively. The adsorption capability of FL-ZnO for the anionic (Sunset Yellow) and cationic (Malachite Green) dyes was investigated in a batch process. The effects of initial pH, initial dye concentration, temperature, and adsorbent concentration on the studied adsorption processes were also evaluated and the results showed that the studied adsorption systems were noticeably dependent of initial pH in the experimental range. The adsorption mechanism was described by the equilibrium, kinetic, and mass transfer modelling. The results showed that the experimental equilibrium data for both dyestuff were fitted well to Langmuir isotherm model, the studied adsorption kinetics were in the best agreement with the pseudo second order model, both intraparticle and film diffusion were effective on the studied adsorption systems as to Weber-Morris model. Besides, the antibacterial activities of FL-ZnO for the gram negative Escherichia-coli (O157: H7) and the gram positive Listeria monocytogenes were tested.Index Terms-Adsorption, adsorbent, antibacterial activity, hierarchical flower-like ZnO, metal oxide materials.

show abstract

“…The sorption kinetic data was further analyzed by Boyd kinetic model, 37,38 which can be calculated by eq 4…”

Section: Methodsmentioning

confidence: 99%

Kinetics and Interfacial Thermodynamics of the pH-Related Sorption of Tetrabromobisphenol A onto Multiwalled Carbon Nanotubes

Zhang

Liu

et al. 2014

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Surface functionalization of multiwalled carbon nanotubes (MWCNTs) was performed using mixed acid and ethylenediamine. The materials were characterized by electron microscope, X-ray diffraction, Raman spectra, Fourier transform infrared, N2 adsorption-desorption, and X-ray photoelectron spectroscopy. The pH-dependent sorption of tetrabromobisphenol A (TBBPA) onto raw and functionalized MWCNTs was investigated. A decrease in TBBPA uptake was found to be dependent on the adsorptive pKa in alkaline conditions. Two types of MWCNTs exhibited rapid binding kinetics for TBBPA sorption within 20 min. The kinetics of TBBPA sorption onto MWCNTs were analyzed using a pseudo-second-order model, an intraparticle diffusion model and Boyd model. The results showed that TBBPA sorption on MWCNTs and N-MWCNTs could be well described by the pseudo-second-order model, and the external diffusion (boundary layer diffusion) was the rate-limiting step. The extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory was applied to calculate interfacial free energies and to explain the sorption characteristics between the sorbent and solute. This analysis revealed that hydrophobic attractive interactions (i.e., interfacial AB interactions) were dominant in TBBPA sorption onto MWCNTs.

show abstract

Mildly Alkaline Preparation and Methylene Blue Adsorption Capacity of Hierarchical Flower-like Sodium Titanate

Cited by 113 publications

References 50 publications

MIL-68 (In) nano-rods for the removal of Congo red dye from aqueous solution

MIL-68 (In) nano-rods for the removal of Congo red dye from aqueous solution

Synthesis and Characterization of Hierarchical Flower-Like ZnO Particles as Effective Adsorbent and Antibacterial Agent

Kinetics and Interfacial Thermodynamics of the pH-Related Sorption of Tetrabromobisphenol A onto Multiwalled Carbon Nanotubes

Contact Info

Product

Resources

About