Highly efficient scavenging of Ni(II) by porous hexagonal boron nitride: Kinetics, thermodynamics and mechanism aspects

Li, Li; Chang, Kaikai; Fang, Ping; Du, Kui; Chen, Chaogui; Zhou, Shaodong; Shen, Chao; Linghu, Wensheng; Sheng, Guodong; Hayat, Tasawar; Guo, Xinwen

doi:10.1016/j.apsusc.2020.146373

Cited by 27 publications

(4 citation statements)

References 38 publications

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“…As the dosage of sorbent increased, the Cr(VI) diffusion rate and the reactive sites of adsorption onto Ti 3 C 2 T x MXene were reduced at high dosage. Jun et al and Li et al explored the effects of adsorbent dose on lead by GO and MOF, and Ni(II) by porous hexagonal boron nitride, respectively (Jun et al 2019b;Li et al 2020), and similar founding have been reported by them.…”

Section: Effects Of Ph and Sorbent Dosagesupporting

confidence: 58%

Highly efficient scavenging of Cr(VI) by two-dimensional titanium carbide nanosheets: kinetics, isotherms and thermodynamics analysis

Chang

et al. 2021

Water Science and Technology

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In this study, two-dimensional (2D) MXene material (Ti3C2Tx) was employed to investigate its potentials toward the Cr(VI) removal in aqueous system by batch experiments. Characterization techniques such as SEM-EDS, HRTEM, XRD, FI-TR and XPS were used to analyze the structure and interaction of Ti3C2Tx before and after Cr(VI) adsorption. The results indicated that layered structure of Ti3C2Tx had unique surface functional properties and abundant active sites, such as –OH, Ti–O, C = O, which exhibited high adsorption capacity for the Cr(VI) removal. The Cr(VI) adsorption capacity by Ti3C2Tx decreased with the increase of pH, and its maximum value can reach 169.8 mg/g at pH = 2.0. The adsorption kinetic was well-explained by a pseudo-second-order kinetic, indicating that chemical interaction played a dominant role in the adsorption of Cr(VI) on Ti3C2Tx. Meanwhile, the isotherm data was calculated to conform the Freundlich isotherm model. Thermodynamic analysis indicated that the adsorption process of Cr(VI) on Ti3C2Tx was a spontaneous endothermic process. These experimental results revealed that Ti3C2Tx had tremendous potential in heavy metals adsorption from aqueous solutions.

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Section: Effects Of Ph and Sorbent Dosagesupporting

confidence: 58%

Highly efficient scavenging of Cr(VI) by two-dimensional titanium carbide nanosheets: kinetics, isotherms and thermodynamics analysis

Chang

et al. 2021

Water Science and Technology

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“…And the binding energy of Ni 2p 2/3 is lower in Cu 0.9 Ni 0.1 / p ‐BN than that of Ni/ p ‐BN (855.9 eV) [36] . This is sufficient to show that the Cu in the alloy catalyst transfers some electrons to Ni, and the doping of Ni in Cu can produce a synergistic effect to change the electronic structure of Cu [37] …”

Section: Resultsmentioning

confidence: 97%

“…[36] This is sufficient to show that the Cu in the alloy catalyst transfers some electrons to Ni, and the doping of Ni in Cu can produce a synergistic effect to change the electronic structure of Cu. [37] To determine the true loading of Cu and Ni on the p-BN supporter, all samples are tested with ICP-AES. The results are demonstrated in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Non‐precious Metal Cu‐Ni Alloy Nanoparticles Supported on Porous Boron Nitride Fibers as Catalysts for Dehydrogenation from Methanolysis of Ammonia‐Borane**

Liu

Wang

et al. 2023

ChemistrySelect

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Dehydrogenation from methanolysis of ammonia borane is a promising strategy for the development of sustainable hydrogen energy. Developing an effective and inexpensive catalyst is essential. In our study, a series of CuÀ Ni nanoparticles, in the form of alloy, are supported onto porous boron nitride fibers by impregnation reduction. Cu and Ni synergistically interact through the alloys, Cu 0.9 Ni 0.1 /p-BN demonstrates excellent catalytic effect with high turnover frequency (27.1 min À 1 ) and low activation energy (27.8 kJ/mol) at 298 K. Kinetics indicates that the catalyst concentration follows the quasi-primary reaction. Moreover, the pores of the p-BN supporter prevent agglomeration of the metal particles while limiting their size, as well as providing protection to the particles. After passing 8 cycles, the catalyst does not suffer from severe poisoning effects. This work greatly enriches the non-precious metal catalyst system and plays a very meaningful role in the study of dehydrogenation from methanolysis of AB.

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“…This shows that we need to reasonably choose high removal rate (low residue) or high adsorption capacity (low adsorbent consumption) according to the actual application. [30]. In this study, 70 mg of calcareous sand was taken as an example for follow-up experiments.…”

Section: Adsorption Science and Technologymentioning

confidence: 99%

Study on the Adsorption Mechanism of Graphene Oxide by Calcareous Sand in South China Sea

Luo

et al. 2021

Adsorption Science & Technology

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To remove graphene oxide from wastewater, we used batch experiments with calcareous sand to recover GO. The adsorption properties and mechanisms of GO by calcareous sand were investigated by different characterization techniques. In this paper, the relationship between the coagulation of GO on calcareous sand and pH, calcareous sand content, GO initial concentration, and temperature was studied. The results show that calcareous sand can effectively adsorb GO from aqueous solution, the interaction of GO with calcareous sand achieved interaction equilibrium in 5 h, and the adsorption of GO by calcareous sand strongly depends on pH. The isotherm data fitted to a Langmuir equation. A possible mechanism can be expressed from FT-IR, XRD, Raman spectra, SEM, EDS, TEM, AFM, and XPS results. The test results indicate that calcareous sand is a potentially recoverable GO material.

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Highly efficient scavenging of Ni(II) by porous hexagonal boron nitride: Kinetics, thermodynamics and mechanism aspects

Cited by 27 publications

References 38 publications

Highly efficient scavenging of Cr(VI) by two-dimensional titanium carbide nanosheets: kinetics, isotherms and thermodynamics analysis

Highly efficient scavenging of Cr(VI) by two-dimensional titanium carbide nanosheets: kinetics, isotherms and thermodynamics analysis

Non‐precious Metal Cu‐Ni Alloy Nanoparticles Supported on Porous Boron Nitride Fibers as Catalysts for Dehydrogenation from Methanolysis of Ammonia‐Borane**

Study on the Adsorption Mechanism of Graphene Oxide by Calcareous Sand in South China Sea

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