Adsorption behavior of Cs(I) on natural soils: Batch experiments and model-based quantification of different adsorption sites

H4Ti5O12 nanorods were successfully prepared by hydrothermal methods followed by a calcination process. Batch experiments indicate that the nanorod adsorbent is a promising adsorbent to recover lithium from liquid lithium resources.

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First principles study of IIIA atoms adsorbed on ZnO (0001) surface and the applications in optoelectronic devices

Journal of Physics Conference Series ◽

10.1088/1742-6596/2083/2/022002 ◽

2021 ◽

Vol 2083 (2) ◽

pp. 022002

Author(s):

Haifeng Zhang ◽

Caiping Cheng ◽

Bin Wang

Keyword(s):

Electronic Structure ◽

Band Gap ◽

First Principles ◽

Electronic Structures ◽

Formation Energy ◽

Optoelectronic Devices ◽

Adsorption Behavior ◽

Binding Ability ◽

Impurity States ◽

Adsorption Sites

Abstract First principles method is used to study the adsorption behavior, formation energy and electronic structure of IIIA (B, Al, Ga, In) atoms adsorbed on Top, T4 and H3 sites of ZnO (0001) surface. The date shows that the formation energy of B, Al, Ga and In atoms adsorbed on Top site is highest, then followed by T4 site, and H3 is a more stable adsorption site. With the periodic increase of B, Al, Ga and In atoms, the formation energy of corresponding models decreases gradually, and the binding ability with O atoms also decreases gradually. The electronic structure of ZnO (0001) surface is sensitive to the adsorption sites. When these atoms are adsorbed on Top sites, the electronic structures of B-Top, Al-Top, Ga-Top and In-Top models have a little change compared with ZnO (0001) surface. However, when these atoms are adsorbed on T4 and H3 sites, the impurity states appear on the VBM, which narrowing the band gap of the corresponding models.

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Adsorption sites engineering: Cu-Ni(OH)2 sheet for Efficient Hydrogen Evolution.

Journal of Materials Chemistry A ◽

10.1039/d1ta05941f ◽

2021 ◽

Author(s):

Wenda Zhong ◽

Chenfan Yang ◽

Jing Wu ◽

Wenli Xu ◽

Rong Zhao ◽

...

Keyword(s):

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Catalytic Efficiency ◽

Adsorption Behavior ◽

P Adsorption ◽

Adsorption Sites

Adsorption behavior determines the catalytic efficiency in hydrogen evolution reaction (HER). Thus, engineering catalytic adsorption sites provide an opportunity to investigate the active areas of catalysts deeply. Herein, we put...

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Preparation and Removal Properties of Cimetidine from Aqueous Solution by Waste Bricks Incorporated with Different Iron Oxides

Applied Sciences ◽

10.3390/app9163346 ◽

2019 ◽

Vol 9 (16) ◽

pp. 3346

Author(s):

Zhang ◽

Liu ◽

Xu ◽

Chen ◽

Tan ◽

...

Keyword(s):

Adsorption Process ◽

Ph Value ◽

Water Environment ◽

Outer Sphere ◽

Adsorption Behavior ◽

Iron Species ◽

Simple Method ◽

Construction Waste ◽

Adsorption Sites ◽

New Methods

In this study, to investigate the elimination of micropollutant from aqueous solutions by construction waste, waste red brick (WRB) with and without incorporated of iron species (goethite and hematite) were prepared by a simple method. The prepared materials were systematically characterized and batch experiments were conducted to study the elimination of typical micropollutant cimetidine from the water environment. Results showed that both two iron species could be successfully incorporated onto WRB and the main structure of WRB were maintained. The adsorption process of cimetidine onto bricks was fast due to the microstructure and useful adsorption sites on the surface of bricks. The Langmuir model fitted the experimental data better and the qmax of cimetidine increased about 24.4% and 39.6% for the incorporation of hematite and goethite, respectively. The pH values influenced the adsorption behavior greatly and the favorable pH value was around 6.0. The charge screening effect and competition adsorption may influence the adsorption behavior together. Due to the interaction between cimetidine and bricks, the outer-sphere complexation may be formed in the adsorption process. This study shows new methods for the elimination of the micropollutant from the water environment and offers useful guidelines for the reuse of construction waste.

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Adsorption behavior of a tri-functionalized imprinted resin with high selectivity for 5-sulfosalicylic acid: Batch experiments and DFT calculation

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2021.125271 ◽

2021 ◽

Vol 412 ◽

pp. 125271

Author(s):

Yue Sun ◽

Yingpeng Gu ◽

Yu Jiang

Keyword(s):

Dft Calculation ◽

High Selectivity ◽

Adsorption Behavior ◽

Batch Experiments ◽

Sulfosalicylic Acid

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Sorption of Semi-Volatile Organic Compounds by Bottom and Fly Ashes Using HPLC

Adsorption Science & Technology ◽

10.1177/026361749801600404 ◽

1998 ◽

Vol 16 (4) ◽

pp. 273-283 ◽

Cited By ~ 8

Author(s):

Abd. El-Hakim Daifullah ◽

Hamdy Gad

Keyword(s):

High Performance ◽

Single Component ◽

Ultimate Capacity ◽

Batch Experiments ◽

Fly Ashes ◽

Molecular Configuration ◽

Isotherm Equation ◽

Adsorption Sites ◽

Component Systems ◽

Volatile Organic

The adsorption of phenolic compounds on a mixture of bottom and fly ashes has been investigated. Thus, the effect of molecular weight and molecular configuration on the adsorption of phenol (Ph), m-cresol ( m-Cr), p-cresol ( p-Cr), 2-nitrophenol (2-NP) and 4-nitrophenol (4-NP) from aqueous solution have been determined. The thermodynamic parameters for the adsorption of 2-NP and 4-NP have been calculated on the basis of Everett's isotherm equation. Batch experiments were conducted to produce isotherms for single-component, two-component and four-component systems. For this purpose, high-performance liquid chromatography was used. It was found that the ultimate capacity of the adsorbent is considerably less than that predicted from summing the single-component data; this has been attributed to increased competition for adsorption sites.

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Removal of Hexavalent Chromium on Chitosan-Deposited Activated Carbon

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.135.85 ◽

2008 ◽

Vol 135 ◽

pp. 85-88 ◽

Cited By ~ 10

Author(s):

Jeong Min Lee ◽

K. Palanivelu ◽

Young Seak Lee

Keyword(s):

Aqueous Solution ◽

Surface Modification ◽

Activated Carbon ◽

Specific Surface ◽

Hexavalent Chromium ◽

Removal Efficiency ◽

Solid Surface ◽

Batch Experiments ◽

Adsorption Sites ◽

Ft Ir

This research involved the deposition of chitosan on the surface of activated carbon(AC) to get an adsorbent(CS-AC) to removal Cr(VI) from aqueous solution. Each adsorbent used in this study was characterized using BET specific surface analyzer, FT-IR and elemental analyzer. Batch experiments were conducted to determine the removal efficiency of Cr(VI). Chitosan was physically adsorbed on the surface of the AC and the removal efficiency of CS-AC was greater than that of raw activated carbon(RAC), suggesting that the surface modification of AC by chitosan provides more adsorption sites on their solid surface for Cr(VI) adsorption.

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