Highly adsorptive removal of emerging antibiotics in water using novel Al2O3/SiO2 nanocomposites fabricated from rice husk

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces Pub Date : 2025-02-01 DOI:10.1016/j.surfin.2025.105792

Thi Thuy Trang Truong , Thi Kim Chi Tran , Thi Ngan Vu , Thi Duyen Tran , Huy Tuan Dat Pham , Khanh An Nguyen , Duc Anh Pham , Ha Vy Nguyen , Thanh Binh Nguyen , Tien Duc Pham

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引用次数: 0

Abstract

Novel Al₂O₃/SiO₂ nanocomposites were successfully synthesized utilizing rice husk as a precursor. Comprehensive characterization of the Al₂O₃/SiO₂ nanocomposites was performed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy-dispersive Xray spectroscopy (EDX), transmission electron microscopy (TEM), and zeta potential analysis. The nanocomposites achieved high removal efficiencies exceeding 90 % for emerging antibiotics, ciprofloxacin (CFX) and ofloxacin (OFX). Optimal conditions for CFX the removal were determined to be a pH of 7, a contact time of 90 min, and an adsorbent dosage of 10 mg/mL while for OFX the optimum paramerers were a pH of 5, a contact time of 60 min, and an adsorbent dosage of 5 mg/mL. The maximum adsorption capacities for CFX and OFX were found to be 124.8 and 22.5 mg/g, respectively. The adsorption processes for both CFX and OFX on the Al₂O₃/SiO₂ nanocomposites follow the pseudo-second-order kinetic and the Freundlich isotherm models, suggesting multilayer chemical adsorption with the interaction force mainly driven by electrostatic interactions. The Al₂O₃/SiO₂ nanocomposites exhibited reusability, retaining over 60 % removal efficiency after four reuse cycles. These results highlight the substainbility for the Al₂O₃/SiO₂ nanocomposites derived from nanosilica rice husk for the removal of antibiotics from aqueous environments.

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来源期刊

Surfaces and Interfaces Chemistry-General Chemistry

CiteScore

8.50

自引率

6.50%

发文量

753

审稿时长

35 days

期刊介绍： The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)