Enhanced adsorption performance for antibiotics by alcohol-solvent mediated boron nitride nanosheets

The development of high-efficient adsorbents for the treatment of antibiotics from contaminated water has been of great concern. This work introduced an alcohol-solvent mediated strategy to increase the specific surface area (SSA) and porosity of hexagonal boron nitride nanosheets (BNNSs) for improv...

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Bibliographic Details
Published in:Rare metals 2022, Vol.41 (1), p.342-352
Main Authors: Wu, Hao-Feng, Chao, Yan-Hong, Xia, Guo-Hua, Luo, Jing, Tao, Duan-Jian, Zhu, Lin-Hua, Luo, Gui-Ling, Huang, Yan, Hua, Ming-Qing, Zhu, Wen-Shuai
Format: Article
Language:English
Subjects:
Adsorption
Antibiotics
Biomaterials
Boron nitride
Chemistry and Materials Science
Energy
Mass transfer
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Nanosheets
Original Article
Physical Chemistry
Solvents
Synthesis
Thermodynamic equilibrium
Wastewater
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Summary:The development of high-efficient adsorbents for the treatment of antibiotics from contaminated water has been of great concern. This work introduced an alcohol-solvent mediated strategy to increase the specific surface area (SSA) and porosity of hexagonal boron nitride nanosheets (BNNSs) for improving tetracycline (TC) removal efficiency. The BNNSs synthesized with the mediation of n-propanol solvent (BN-P) exhibited the largest pore volume and relatively high SSA (increased by 34% and 64%, respectively, compared with that synthesized under the mediation of water) in its structure, which in turn facilitated the mass transfer of TC molecules onto BN-P framework. The remarkable adsorption performance of BN-P, with 20% increase in equilibrium adsorption capacity and Langmuir maximum adsorption capacity of 556 mg·g −1 , was achieved for capturing TC within just 3 h, which is mainly through π-π interaction and electrostatic force. Pseudo-second kinetics equation can well illustrate the adsorption process, while Freundlich and Langmuir isotherm models fitted the equilibrium data well. Thermodynamics study demonstrated a spontaneous exothermal adsorption process. Furthermore, the strong environmental suitability and notable recycling performance of BN-P revealed its good application prospect in removing antibiotic TC from wastewater. Graphical abstract
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-021-01855-5