Efficient and selective adsorption of uranium by diamide-pyridine-functionalized hierarchically porous boron nitride

Zhang, Peng; Chen, Yizhi; Guo, Qiqi; Liu, Yusen; Chong, Hanbao; Weng, Hanqin; Zhao, Xiaoying; Yang, Yu; Lin, Meng

doi:10.1016/j.seppur.2022.122538

Cited by 8 publications

(2 citation statements)

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“…35 This assigned the U atom was coordinated with O atoms of the adsorbent as shown in Figure 8, and in harmony with the results of Zhang and coworkers. 84 As a result, at first, adsorption mechanism could involve electrostatic interaction in solution between U (VI) ions and oxygen atoms of composite as shown. Following this, a complexation and redox reaction were developed between them as suggested by Lai and coworkers.…”

Section: Predicted Adsorption Mechanismmentioning

confidence: 99%

Adsorption of uranium (VI) from aqueous solutions using boron nitride/polyindole composite adsorbent

Emre,

Zorer,

Bilici

et al. 2023

J of Applied Polymer Sci

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Turbostratic boron nitride (tBN) surface is modified with polyindole (PIn) by a facile polymerization technique and the uranyl adsorption efficiency of this mesoporous hybrid is investigated. The successful surface modification is confirmed by FT‐IR, Raman, XRD, TEM, SEM, EDX, EDS mapping XPS, BET, and zeta potential techniques. The batch experiments are performed in various temperatures (T), contact times (t), pH, and initial solution concentrations (C0) to evaluate its adsorption performance. The optimum adsorption performance is achieved at pH = 5.0–5.5, T = 307 K, t = 10 min, C0 = 18 mg L−1. These experimental results are evaluated using Freundlich, Redlich–Peterson, and Langmuir isotherm models, which presents equivalent regression coefficients. Maximum adsorption capacity (qm) of the nanoadsorbent (tBN/PIn), determined by the Langmuir isotherm, is 315.29 mg g−1. The adsorption kinetics of uranyl ions on tBN/PIn are in harmony with the pseudo‐second order model. tBN/PIn nanoadsorbent provides high adsorption efficiency even at exceptionally low UO22+ concentration range (4–40 mg L−1) and low adsorbent mass (0.005 g). XPS analysis results show that 0.05% of uranium is adsorbed on tBN/PIn via mainly U‐O coordination. The results of present study demonstrate that tBN/PIn can a potential adsorbent for removing uranium from aqueous solutions.

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Section: Predicted Adsorption Mechanismmentioning

confidence: 99%

Adsorption of uranium (VI) from aqueous solutions using boron nitride/polyindole composite adsorbent

Emre,

Zorer,

Bilici

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…A sizeable body of work featuring the Halsey isotherm has been published across a broad spectrum of scholarly journals. Quite a large fraction of these reports can be found in several major journals (e.g., Chemical Engineering Journal [2][3][4][5][6][7][8][9][10][11][12], Journal of Hazardous Materials [13][14][15][16][17][18][19][20][21], Separation and Purification Technology [22][23][24][25][26][27][28], and Journal…”

Section: Introductionmentioning

confidence: 99%