共 64 条
Novel deep eutectic solvent-functionalized carbon nanotubes adsorbent for mercury removal from water
被引:82
作者:
AlOmar, Mohamed Khalid
[1
,2
]
Alsaadi, Mohammed Abdulhakim
[2
,3
,4
]
Jassam, Taha M.
[5
]
Akib, Shatirah
[6
]
Hashim, Mohd Ali
[2
,7
]
机构:
[1] Univ Malaya, Dept Civil Engn, Kuala Lumpur 50603, Malaysia
[2] Univ Malaya, Ctr Ion Liquids, Kuala Lumpur 50603, Malaysia
[3] Univ Malaya, NANOCAT, Nanotechnol & Catalysis Res Ctr, IPS Bldg, Kuala Lumpur 50603, Malaysia
[4] Univ Nizwa, Natl Chair Mat Sci & Met, Nizwa, Oman
[5] UCSI Univ, Fac Engn Technol & Built Environm, Civil Engn Dept, Kuala Lumpur 56000, Malaysia
[6] Heriot Watt Univ Malaysia, EGIS, Sch Energy Geosci Infrastruct & Soc, Putrajaya 62200, Malaysia
[7] Univ Malaya, Dept Chem Engn, Kuala Lumpur 50603, Malaysia
关键词:
Deep eutectic solvents;
Carbon nanotubes;
Functionalization;
Mercury;
Adsorption;
SHAPE-CONTROLLED SYNTHESIS;
HIGH-INDEX FACETS;
CHOLINE CHLORIDE;
AQUEOUS-SOLUTION;
PHYSICAL-PROPERTIES;
CATALYTIC-ACTIVITY;
IONIC LIQUIDS;
ADSORPTION;
NANOPARTICLES;
CHEMISTRY;
D O I:
10.1016/j.jcis.2017.03.014
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Due to the interestingly tolerated physicochemical properties of deep eutectic solvents (DES5), they are currently in the process of becoming widely used in many fields of science. Herein, we present a novel Hg2+ adsorbent that is based on carbon nanotubes (CNTs) functionalized by DESs. A DES formed from tetra-n-butyl ammonium bromide (TBAB) and glycerol (Gly) was used as a functionalization agent for CNTs. This novel adsorbent was characterized using Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, XRD, FESEM, EDX, BET surface area, and Zeta potential. Later, Hg2+ adsorption conditions were optimized using response surface methodology (RSM). A pseudo-second order model accurately described the adsorption of Hg2+. The Langmuir and Freundlich isotherm models described the absorption of Hg2+ on the novel adsorbent with acceptable accuracy. The maximum adsorption capacity was found to be 177.76 mg/g. (C) 2017 Elsevier Inc. All rights
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页码:413 / 421
页数:9
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