TY - JOUR
T1 - Solvent-free nanoalumina loaded nanocellulose aerogel for efficient oil and organic solvent adsorption
AU - Zhou, Xiaomin
AU - Fu, Qiangang
AU - Liu, Hu
AU - Gu, Hongbo
AU - Guo, Zhanhu
N1 - Publisher Copyright:
© 2020 Elsevier Inc.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Hypothesis: Cellulose-based aerogel, due to its rich reserves, environmental friendliness and porous structure, is considered as a new type of adsorbents for treating oil and water pollution. However, the functionalization of cellulose aerogel is still required for the efficient increase of its adsorption performance in wide applications. The combination of nanomaterials could significantly improve the adsorption capability of nanocellulose aerogel. Experiments: In this work, nanocomposite aerogels comprising of nanocellulose and nanoalumina (NC/Al2O3) are produced via a solvent-free method and the effect of weight ratios between nanocellulose and nanoalumina on the adsorption properties of NC/Al2O3 aerogels has been studied. Findings: The results reveal that the NC/Al2O3 aerogel with a low density of 5.1 mg cm−3 could obtain the optimal pore microstructures and the highest oil and organic solvent adsorption capacities with the preparation condition under the nanocellulose/nanoalumina weight ratio of 1:0.25 and 0.4 wt% of nanocellulose in aqueous solution. The presence of nanoalumina facilitates the change of microstructure morphologies, the increase of BET specific surface area and the adsorption capacities of NC aerogel. Compared with pure NC aerogel (74.07 ± 1.67, 69.87 ± 1.01, 81.21 ± 3.20, 52.07 ± 1.70, 48.49 ± 1.01, 75.45 ± 3.58 and 87.03 ± 0.46 g g−1 for thiophene, anhydrous ethanol, ethyl acetate, cyclohexane, sesame oil, acetone and dichloromethane, respectively), the NC/Al2O3 aerogel manifests an outstanding adsorption capacity (108.07 ± 0.37, 89.91 ± 4.83, 93.93 ± 3.81, 71.13 ± 2.48, 64.83 ± 2.25, 85.19 ± 3.87 and 117.65 ± 5.68 g g−1, accordingly). By considering the desirable performance features and the convenient fabrication approach, this nanocellulose nanocomposite aerogel might be a feasible alternative for oily waste water recovery and conservation of environment.
AB - Hypothesis: Cellulose-based aerogel, due to its rich reserves, environmental friendliness and porous structure, is considered as a new type of adsorbents for treating oil and water pollution. However, the functionalization of cellulose aerogel is still required for the efficient increase of its adsorption performance in wide applications. The combination of nanomaterials could significantly improve the adsorption capability of nanocellulose aerogel. Experiments: In this work, nanocomposite aerogels comprising of nanocellulose and nanoalumina (NC/Al2O3) are produced via a solvent-free method and the effect of weight ratios between nanocellulose and nanoalumina on the adsorption properties of NC/Al2O3 aerogels has been studied. Findings: The results reveal that the NC/Al2O3 aerogel with a low density of 5.1 mg cm−3 could obtain the optimal pore microstructures and the highest oil and organic solvent adsorption capacities with the preparation condition under the nanocellulose/nanoalumina weight ratio of 1:0.25 and 0.4 wt% of nanocellulose in aqueous solution. The presence of nanoalumina facilitates the change of microstructure morphologies, the increase of BET specific surface area and the adsorption capacities of NC aerogel. Compared with pure NC aerogel (74.07 ± 1.67, 69.87 ± 1.01, 81.21 ± 3.20, 52.07 ± 1.70, 48.49 ± 1.01, 75.45 ± 3.58 and 87.03 ± 0.46 g g−1 for thiophene, anhydrous ethanol, ethyl acetate, cyclohexane, sesame oil, acetone and dichloromethane, respectively), the NC/Al2O3 aerogel manifests an outstanding adsorption capacity (108.07 ± 0.37, 89.91 ± 4.83, 93.93 ± 3.81, 71.13 ± 2.48, 64.83 ± 2.25, 85.19 ± 3.87 and 117.65 ± 5.68 g g−1, accordingly). By considering the desirable performance features and the convenient fabrication approach, this nanocellulose nanocomposite aerogel might be a feasible alternative for oily waste water recovery and conservation of environment.
KW - Nanoalumina
KW - Nanocellulose
KW - Nanocomposite aerogel
KW - Oil and organic solvent adsorption
KW - Solvent-free
UR - http://www.scopus.com/inward/record.url?scp=85089074214&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2020.07.099
DO - 10.1016/j.jcis.2020.07.099
M3 - 文章
C2 - 32777625
AN - SCOPUS:85089074214
SN - 0021-9797
VL - 581
SP - 299
EP - 306
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -