37 1 Vol37 No1 2018 3 Journal of South-Central University for NationalitiesNatSciEdition Mar2018 - Cu 2+ 1 1 1 1 2 1 4300742 430074 N-4- - - Cu 2+ Fe 3 O 4 10 mg ph 5 10 ml Cu 2+ 25 mg L -1 15 min 93% Cu 2+ EDTA 01 mol L -1 15 min 95%Cu 2+ - O6255 A 1672-4321201801-0025-05 Enrichment of Cu 2+ by Magnetic Polystyrene-Benzyl Iminodiacetic Acid Composites Zhang Huijuan 1 Liu Wangwei 1 Lü Haoyong 1 Liu Huiling 1 2 1 College of Chemistry and Materials ScienceSouth-Central University for NationalitiesWuhan 430074 2 Experimental Teaching and Laboratory Management CenterSouth-Central University for Nationalities Wuhan 430074 Abstract In order to prepare new materials for the rapid separation and enrichment of trace Cu 2+ in watermagnetic polystyrene-benzyl iminodiacetic acid composites was prepared by thermal polymerization using magnetic silica microsphere as the coren-4-vinyl-benzyl iminodiacetic acid as monomerand divinyl benzene as cross-linker respectively The composition and structure of the resulting materials were characterized by Fourier infrared spectroscopytransmission electron microscopy and thermogravimetric analysis Cu 2+ was used to study the enrichment performance and related adsorption kinetics The result showed that the polymer with functional groups was successfully coated on the surface of Fe 3 O 4 nanoparticles Adsorption equilibrium was achieved within 15 min with an adsorption rate of 93% by using 10 mg adsorbent in 10 ml Cu 2+ solution 25 mg L -1 at a ph value of 50 Cu 2+ could be quickly eluted using EDTA solution 01 mol L -1 within 15 minwith elution rate of up to 95% The adsorption behavior of Cu 2+ on the prepared material fitted well with the pseudo two-order kinetics model Keywords polystyrene-benzyl iminodiacetic acidmagnetic materialcopper ionsabsorption 1 5 6 2 7 3 4 8 9 10 2017-08-31 1980- E-mailhuistar119@ 163com 11 21571192 CX201601
26 37 30 ml 25 ml DVB 096 ml mpeg2000m = 21 5 min MPS 12 250 mg MPS Fe 3 O 4 @ SiO 2 - h 50 12 h MPS N-4- - VBIDA mpeg2000m = 21 - Fe 3 O 4 @ SiO 2 @ PS-BIDA TEM FT-IR TG Cu 2+ 1 Fe 3 O 4 @ SiO 2 @ PS-BIDA - Fig1 Synthetic schematicdaiageam of Fe 3 O 4 @ SiO 2 @ PS-BIDA 123 Cu 2+ 1 5 ml 10 ml ph 25 11 mg L -1 Cu 2+ 25 AIBN IDA γ- 2000 4- VBC DVB EDTA KOH HCl 30 mg AIBN 70 10 MPS Cu 2+ q t Fe 3 O 4 q t = Vρ - 0 ρ t 1 TEOS PEG m V Cu 2+ mlm mgρ 0 ρ t t Cu 2+ mg L -1 η η = m t 100% m e NEXUS 470 m t Cu 2+ m e Thermo Nicolet TG-209F3 Cu NETZSCH AA-6300 124 JEM-100CX II Cu 2+ Cu 2+ Jeol 325 nm 2 ma 5 mm 12 25 L min -1 05 L min -1 02 121 VBIDA 0959 g IDA 50 ml02 mol L -1 nm 1255075100 mg L -1 Cu 2+ KOH 60 Cu 2+ Cu 2+ 465 μl VBC 10 ml1 A = 002399ρ-000816 mol L -1 KOH 30 min R 2 09991 VBC 24 h Cu 2+ Cu 2+ 2 50 12 h 125 Cu 2+ 122-5 ml 1 10 g VBIDA 2 ml V V = 101 15 min 2
1 - Cu 2+ 27 A DR DR = m m 0 100% 3 m Cu 2+ m 0 Cu 2+ 2 21-211 Fe 3 O 4 @ SiO 2 MPS Fe 3 O 4 @ SiO 2 @ PS-BIDA 2 2 Fe 3 O 4 @ SiO 2 MPS 3443 cm -1 OH 1083 cm -1 Si O 1710 cm -1 C ==O 590 cm -1 Fe O 30~120 nm Fe 3 O 4 @ SiO 2 @ PS-BIDA Fe 3 O 4 2927 cm -1 Fe 3 O 4 3443 cm -1 VBIDA OH 1639 1619 cm -1 1210 cm -1 C N Fig3 3 Fe 3 O 4 @ SiO 2 @ PS-BIDA TGDTG curves of Fe 3 O 4 @ SiO 2 @ PS-BIDA 213 TEM 4 4 4 Fig4 Fe 3 O 4 @ SiO 2 @ PS-BIDA TEM image offe 3 O 4 @ SiO 2 @ PS-BIDA 22-221 Cu 2+ 5 afe 3 O 4 @ SiO 2 MPSbFe 3 O 4 @ SiO 2 @ PS-BIDA Fig2 2 FTIR spectra of magnetic polymer materials 212 3 3 100~480 223430 223 430 9483 5 10 ml ph 5 Cu 2+ 25 mg L -1 Cu 2+ 4632% Cu 2+ 10 5 Cu 2+ Fig5 Effect of adsorbent amount on adsorption of Cu 2+
28 37 mg Cu 2+ 93% Cu 2+ Cu 2+ Cu 2+ 10 mg 222 ph 7b Cu 2+ 100 mg L -1 ph 30 ~ 90 ph Cu 2+ Cu 2+ 6 6 10 mg ph Cu 2+ 80% ph 40 ~ 60 ph Cu 2+ ph OH Cu 2+ Cu 2+ Cu 2+ ph = 50 ph 6 ph Cu 2+ Fig6 Effect of ph value on adsorption of Cu 2+ Cu 2+ Fig7 a b 223 Cu 2+ min -1 g /mg min 10 mg Cu 2+ 10 ml ln( q e - q t ) t 5 1 1 7 7 Cu 2+ 1 mg L -1 Cu 2+ Cu 2+ 15 mincu 2+ 7a Tab1 1 7 Cu 2+ Effect of initial Cu 2+ concentration on material adsorption capacity 224 ln( q e - q t ) = ln q e - k 1 t 1 = + t q t k 2 q 2 q e e q e q t t mincu 2+ mg g -1 k 1 k 2 Cu 2+ Adsorption kinetic of Cu 2+ onto Fe 3 O 4 @ SiO 2 @ PS-BIDA materials ρ 0 /mg L -1 k 1 / min -1 R 2 1 k 2 / g mg min -1 R 2 2 25 03303 09554 00389 09918 50 04752 09115 00199 09904 75 03934 09115 00132 09820 100 05113 08599 00115 09607 225 Cu 2+ 2 2 Cu 2+ 珋 x±sn = 3 mg L -1 Cu 2+ Tab2 Effect of coexisting ions on Cu 2 + adsorption Cu 2+ ρ/mg L -1 2 2 Cu 2+ Zn 2+ Mn 2+ 4 Cu 2+ ηcu 2+ /% Na + 60 76±05 K + 40 76±05 Ca 2+ 40 70±16 Mg 2+ 40 70±16 Mn 2+ 40 85±02 Zn 2+ 40 907±01
1 - Cu 2+ 29 226 on growthdevelopmentand population dynamics of HCl EDTA Spodoptera litura LepidopteraNoctuidae J J Econ 15 min Entomol 2012 1051288-294 8 8 01 mol L -1 2Al Othman Z Unsal Y E Habila M et al Determination EDTA 1 mol L -1 HCl 001 mol L -1 of copper in food and water by dispersive liquid-liquid EDTA microextraction and flame atomic absorption spectrometry 2 1 ml 01 J Anal Lett 2015 48111738-1750 mol L -1 EDTA 95%1 mol L -1 3 Liang Y Liu YGuo X et al Phytate functionalized HCl 001 mol L -1 EDTA 59% multi-walled carbon nanotubes modified electrode for 15% 4 ml HCl 83% determining trace Cu II using differential normal 2 ml EDTA01 mol L -1 8 Fig8 6Fan J Zhang S Facile preparation of Fe 3 O 4 /mesoporous Fe 3 O 4 @ SiO 2 @ PS-BIDA TiO 2 nanoparticles shell on polystyrene beads and its Eluting effect of different eluent forfe 3 O 4 @ SiO 2 @ PS-BIDA effective absorption of cyanobacteria in water J J Polym Res 2015 2291-5 3 7 N-4- - J mpeg2000m = 2 93% 2 ml 01 mol L -1 15 min using a polystyrene-coated magnetite nanocomposite for 95%Cu 2+ magnetic solid phase extraction J Anal Lett 2016 49 121835-1846 11 Gu HLou HTian J et al Reproducible magnetic carbon nanocomposites derived from polystyrene with superior tetrabromobisphenol A adsorption performance J J Mater Chem A 2016 42610174-10185 1Huang D Kong J Seng Y Effects of the heavy metal Cu 2+ pulse anodic stripping voltammetry J Sensor Actuat B- Chem 2014 2014107-113 4Yilmaz V Arslan Z Hazer O et al Selective solid phase extraction of copper using a new Cu II -imprinted polymer and determination by inductively coupled plasma optical emission spectroscopy ICP-OES J Microchem J 2014 11466-72 5Tang S C N Lo I M C Magnetic nanoparticlesessential factors for sustainable environmental applicationsj Water research 2013 4782613-2632 2017 3636-9 1 8Yan X He Q Zhang X et almagnetic polystyrene nanocomposites reinforced with magnetite nanoparticles J - Macromol Mater Eng 2014 2994485-494 9Gu H Lou H Ling D et al Polystyrene controlled growth of Fe 3 O 4 zerovalent nanoiron/ magnetite on a sponge-like carbon Cu 2+ 25 mg L -1 10 matrix towards effective Cr VIremoval from polluted water mlph 5 10 mg 15 min J RSC Adv 2016 6111110134-110145 10Yu Y Fan ZDetermination of Rhodamine B in beverages 12 - J 2017 364464-470