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Synthesis, Characteristics, Oil Adsorption, and Thermal Insulation Performance of Cellulosic Aerogel Derived from Water Hyacinth

Lookup NU author(s): Professor Anh Phan

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Abstract

© 2021 The Authors. Published by American Chemical Society.Cellulosic aerogel from water hyacinth (WH) was synthesized to address the dual environmental issues of water hyacinth pollution and the production of a green material. Raw WH was treated with sodium hydroxide (NaOH) with microwave assistance and in combination with hydrogen peroxide (H2O2). The results from X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and scanning electron microscopy (SEM) showed that lignin and hemicellulose were markedly decreased after treatment, reducing from 24.02% hemicellulose and 5.67% lignin in raw WH to 8.32 and 1.92%, respectively. Cellulose aerogel from the pretreated WH had a high porosity of 98.8% with a density of 0.0162 g·cm-3 and a low thermal conductivity of 0.030 W·m-1·K-1. After modification with methyl trimethoxysilane (MTMS) to produce a highly hydrophobic material, WH aerogel exhibited high stability for oil absorption at a capacity of 43.3, 43.15, 40.40, and 41.88 (g·g-1) with diesel oil (DO), motor oil (MO), and their mixture with water (DO + W and MO + W), respectively. The adsorption remained stable after 10 cycles.

Publication metadata

Author(s): Nguyen TTV, Tri N, Tran BA, Dao Duy T, Nguyen ST, Nguyen T-A, Phan AN, Mai Thanh P, Huynh HKP

Publication type: Article

Publication status: Published

Journal: ACS Omega

Year: 2021

Volume: 6

Issue: 40

Pages: 26130-26139

Print publication date: 12/10/2021

Online publication date: 28/09/2021

Acceptance date: 16/09/2021

Date deposited: 03/12/2021

Publisher: American Chemical Society

URL: https://doi.org/10.1021/acsomega.1c03137

DOI: 10.1021/acsomega.1c03137

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