ZrO 2 /carbon aerogel composites: A study on the effect of the crystal ZrO 2 structure on cationic dye adsorption

Lin, Yi‐Feng; Liang, Fang-Ling

doi:10.1016/j.jtice.2016.05.015

Cited by 12 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ali et al [ 18 ] prepared ZrO 2 /CeO 2 adsorbent materials for the adsorption of acid green 1 dye using a co-precipitation method. Lin et al [ 19 ] synthesized ZrO 2 /carbon aerogel (CA) composites with different amounts of monoclinic and tetragonal ZrO 2 crystallites. The adsorption capacity of ZrO 2 /CA materials for cationic RhB dyes is 95.42 mg·g −1 .…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic Modification of ZrO2-SiO2 Xerogel and Its Adsorption Properties to Rhodamine B

Liu

Yang

2022

Gels

View full text Add to dashboard Cite

Zirconium nitrate pentahydrate (Zr(NO3)4·5H2O) and tetraethyl orthosilicate (TEOS) are used as the zirconium source and silicon source, respectively, and methyltriethoxysilane (MTES) as the hydrophobic modifier; the hydrophilic and hydrophobic ZrO2-SiO2 xerogels were prepared successfully. The xerogels were characterized using Fourier transform infrared spectra (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and N2 adsorption–desorption measurement. The adsorption mechanism of hydrophobic ZrO2-SiO2 xerogels to RhB was described by the kinetic and adsorption isotherms. The results showed that the introduction of Si-CH3 groups can make the average pore size, BET surface area, and total pore volume of ZrO2-SiO2 xerogel increase. The hydrophobic ZrO2-SiO2 xerogel displays an adsorption capacity of 169.23 mg·g−1 for RhB dye at 25 °C and pH = 3. The adsorption process of hydrophobic ZrO2-SiO2 xerogel to RhB followed a pseudo–second-order kinetic model. Fitting results from the D–R model of adsorption indicate that the adsorption of RhB onto the hydrophobic ZrO2-SiO2 xerogels is mainly physical, accompanied by a spontaneous heat absorption process. The regeneration and recycling properties of hydrophobic xerogels were investigated, and their recoverability and reusability were demonstrated.

show abstract

Section: Introductionmentioning

confidence: 99%

Hydrophobic Modification of ZrO2-SiO2 Xerogel and Its Adsorption Properties to Rhodamine B

Liu

Yang

2022

Gels

View full text Add to dashboard Cite

show abstract

“…The cubic phase is thermally stable above 2300 • C, so it is rarely produced at low temperatures (Figure 1c). Yttrium doping was used to successfully construct cubic ZrO2 structures with abundant OVs, resulting in cubic yttria-stabilized zirconia [39,40].…”

Section: Crystal Structurementioning

confidence: 99%

ZrO2-Based Photocatalysts for Wastewater Treatment: From Novel Modification Strategies to Mechanistic Insights

et al. 2022

View full text Add to dashboard Cite

Zirconium dioxide (ZrO2) has garnered substantial research interest in the field of photocatalytic water treatment due to its appealing properties, such as thermal stability, considerable physical strength, and strong chemical resistance. However, the wide bandgap energy endorses less photoabsorption and rapid charge carrier recombination kinetics, thus restricting the photoactivity of ZrO2. Previously, vast research efforts have been made to improve the photoefficacy of ZrO2, and hence it is worth exploring the potential strategic modifications responsible for incremented photocatalytic efficiency. In this regard, the present review article emphasizes the optical, structural, and electronic features of ZrO2, which makes it an interesting photocatalytic material. The exceptional modification strategies that help to modulate the crystal structure, morphology, bandgap energy, and charge carrier kinetics are primarily discussed. The potential synthetic routes involving bottom-up and top-down methods are also outlined for understanding the rationale for incorporating these techniques. Moreover, the photocatalytic performance evaluation was done by investigating the photodegradation kinetics of various organic and inorganic pollutants degradation by ZrO2. Conclusively, in light of research advances involving ZrO2 photocatalyst, this review article may expedite further investigation for enhancing the large-scale photocatalytic applications for environmental and energy concerns.

show abstract

“…Porous carbon is an attractive candidate as an adsorbent for dye removal from contaminated water. − Carbon aerogels as a three-dimensional (3D) porous carbon material, which are characterized by low density, low thermal conductivity, and high electrical conductivity, − have attracted considerable attention in several fields, including oil absorption, , battery anodes, , supercapacitors, thermal insulation, and catalyst supports . Recently, carbon aerogels exhibiting effective absorption properties have been developed to remove dyes from wastewater. − Chang et al prepared a starch-derived carbon aerogel using high-temperature carbonization, which exhibited high performance for sorption of cationic dyes, such as crystal violet (CV), methyl violet (MV), and methylene blue (MB). The maximum adsorption capacities of CV, MV, and MB are 1515, 1423, and 1181 mg g –1 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Amphiphilic Calcium Alginate Carbon Aerogels: Broad-Spectrum Adsorbents for Ionic and Solvent Dyes with Multiple Functions for Decolorized Oil–Water Separation

Tian

Zhu

Xiao

et al. 2020

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Development of versatile, broad-spectrum adsorbents for the removal of diverse dyes from contaminated water and oil is highly desirable. In this study, a calcium alginate carbon aerogel (CCA) as an adsorbent for various types of dyes was fabricated from sodium alginate by wet spinning, cross-linking, drying, and high-temperature carbonization. The CCA carbonized at 1000 °C (CCA-1000) showed a good adsorption effect on methylene blue as a cationic dye, methyl orange as an anionic dye, oil red O as a solvent dye, and nine other dyes. Adsorption kinetics, adsorption effect of various parameters such as temperature and solution pH, regeneration performance, and adsorption mechanism were studied. The ultrahigh adsorption capacities of CCA-1000 for malachite green, crystal violet, and acid fuchsin, each with similar triphenylmethane structures, were determined to be 7059, 2390, and 6964 mg g–1, respectively. Interestingly, unlike previously reported carbon aerogels with simple oil–water separation, due to the amphiphilicity, CCA-1000 fabricated herein can be utilized to separate oil–water, surfactant-stabilized water-in-oil, and oil-in-water emulsions with simultaneous dye removal from water and oil. The present work may open up a new avenue for designing carbon aerogels with exceptional performance for broad-spectrum dye adsorption and oil–water separation from sustainable natural seaweed resources.

show abstract

ZrO 2 /carbon aerogel composites: A study on the effect of the crystal ZrO 2 structure on cationic dye adsorption

Cited by 12 publications

References 17 publications

Hydrophobic Modification of ZrO2-SiO2 Xerogel and Its Adsorption Properties to Rhodamine B

Hydrophobic Modification of ZrO2-SiO2 Xerogel and Its Adsorption Properties to Rhodamine B

ZrO2-Based Photocatalysts for Wastewater Treatment: From Novel Modification Strategies to Mechanistic Insights

Amphiphilic Calcium Alginate Carbon Aerogels: Broad-Spectrum Adsorbents for Ionic and Solvent Dyes with Multiple Functions for Decolorized Oil–Water Separation

Contact Info

Product

Resources

About