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S ô =>> ?@A ð B · B"#$CD TiO2‘ Cr(Ⅵ)/‹›Ž‚23 S ;,ô >,?@A,ð B...

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*"#$+, TiO ` Cr /23 S ;ô <=>>?@Að B þhÑ&$'%&Ñ&$'!(|%&Î-KÚëªmíîÀxÐz@©!(þh 221000 45 )*¡hCHIJDE TiO S Cr *VWfX。[ =>?@F6CHIJ²³.GHIÍ3JHK_oL CMo KH-560 .DE TiO F6OwEF Cr IJCDK\]^NOPQR2VW}~¡hCDK*i j1Sf3TVWfX。[ iJCHIJDE TiO S 0.30mg/mL *JIÍ. pH2.0 TU 30min VW@ 0.30g «q* VW©VWÖ 96.2%@ 13mL1.0mol/L * HCl IÍVW 40min XÖ;UWW 90%oN.YZ¦45ìIJu[IJ K*\uVWIG] 47.7 u 23.5mg/g IJK*frXVW 6.92mg/g ±²^x 100 ^12yz{| 95.7% ~105.2%RSD 1.90% ~5.05%。[ Cr IJCDKª«_*VWXYfrXVW`a678 CHIJDE TiO Cr ); ±²GC .9!:; O647.3  <=>?@ A  <AB; 0517-6611 2016 15-020-04 AdsorptionPropertiesofIonicImprintedNanoTiO onCr ZHAORui ZHANGFan MAOJingjing LIUHui etal  CollegeofFoodEngineering XuzhouInstituteofTechnology FoodResource DevelopmentandQualitySafeKeyConstructionLaboratory Xuzhou Jiangsu221000 Abstract Objective ToresearchtheadsorptionpropertiesofionicimprintednanoTiO onCr Method Byusingsurfaceionimprinted technique Cr imprintednanometerTiO waspreparedinaceticacidsolution withK Cr astemplatemolecule chitosanasthefunctional monomer andKH560ascrosslinker.Besides thestructure appearanceandadsorptionpropertiesofthispolymerwerestudiedbyadoptingscan ningelectronmicroscopy SEM andstaticadsorptionbalancedexperiment. Result ThispolymerhadagoodabilityofadsorbingCr under theconditionofpH2 adsorptionvibratingfor30minandthe0.30gdosage.Theadsorptionratecouldreach96.2%.Whenputin13mLof1 mol/LNaOHsolutionfor40minutes theratewouldreach90%.Themaximumadsorptioncapacityoftheimprintedandnonimprintedpolymer particleswere23.5and47.7mg/g respectively andtheselectivityofadsorptionwas6.92mg/g.Themaximumenrichmentmultiplewas100. Addingstandardrecoveryratewasbetween95.7% and105.2%whiletherelativestandarddeviation RSD wasbetween1.90% and5.05%. Conclusion Cr imprintedpolymerhasrelativelygoodadsorptionpropertyandsignificantspecificadsorption. Keywords Ionimprinted NanoTiO Cr ); Enrichment Separation CDEF ¼½¾m2 ¡æhÏÐÍÎÐb+d/~Îæc») SPKF201413 ); ¼½¾¸qÀ¤Àåò à ÃÄ») xcx2015074 )。 GHIJ S;1995-), ¼½deÁä·qååm2Ð ÏÍÎ]ÒÓÔÖ×ÊËÛÜfKTm2ÐÍ Î¡hKLMN 20160413 D91Ë0#1Ñu23dɱupbcmde<./øùAt>Q@+4µ1b%&_&Q#m§AjþÄhbhpbKR S<t8QÁcb1QVJiº£ú´b&+Y Z²5 1-2 # Cr VI -&Qjk£¤0&+Sö÷¯ Ç$}~åÂÙÏ}~=>º]IÄ}~¦?ãä¤ÂlÀ¤ 3-7 åÂÃÄ6Ñ TiO YoÁÂDýK ).T7v0Äh896ÑÓÔåÂÃÄ5Qq Àõ!$@ý+7ùÀåÂÃÄ6Ñ TiO =>m%¢ÚÛ %$¼ w0X § Ú 6 öÑ l R ì »Ì Q Y Z 8-9 à0QÁ$5n]åÂÃÄÅÆÁå./D9å  10-14 @ä 6exQvÿ` Cr ÃÄ6Ñ´Ç: ]:1QÁå./PQ@d+um5n]åÂÃÄÅÆ b6Ñ´Ç:ßúÈÉ Cr ÃÄdA`ÑÒdQßú óôJK=>wFGPQwb Cr QÁå./ã ½Û 1 OPQRS 1.1 -.QT 1.1.1 ¤DTAS-990 \øÂ=IÁCCÞ× Ñv æ³]¤D01;<23$&îï¯Âðñ×ô¯ Â4p=JEOL $&L550 þhåÔ.>"?¤D ·É0123$&pHS-3C \ pH×i$01 23$&EL240 ¯Âpa@ÌA ì*+¤D012 3$&HY-5A\HÚ4BCD!(|DDÀEÿ¤ DÈ0123$&KQ-300B \±²ªË»DÓ-À ±²¤D0123$&¿ÀÁÂð Ñvæ³]01 ;<23 $ &GZX-DH600-2Á ð à $ ¤ D F $&1.1.2 ??6Ñ TiO P25 ), é[ Degussa 23üÑ TÌG%95%ÁæíHöI@dÅÆ01 23γ ;´´S»´S# KH-560 "ÑJCÇÑ/¡0123]]1]<Áæ z@©]·Öéå·1.2 TURS 1.2.1 åÂÃÄ6Ñ TiO ÈÉëßÈão6Ñ TiO ¬ : 500℃GHopä¢~QÇ 2h o 80~90mL0.1mol/L Q¦j£·0 1.8g üÑTQKLMN¦§¢£ 0.5gK Cr MNB¨\ªOÐMN 1h MNu¢£ 18.0mLKH-560 Ù«?PÒB±£BCD }~ 5~6h 9½}~¯Á@ßÞÙ«QTùÑÒdÖ ä 1.5g QÇÜQ6Ñ TiO ¢£½ÑÒd±²Áõ 30~ 50min nKD'Q'ùoÃÄdj£¿RaSÕõK ïÞí: 1cm ãb\ªÁ½Q'Ǩ±£ 60℃¿ÀÁ Âð÷ÁäPîÈñl 100 }] 0.5mol/LHCl \]B^ Þßà \]_` áâ VWXYZ[JournalofAnhuiAgri.Sci.2016 44 15 ): 20-23
Transcript
Page 1: S ô =>> ?@A ð B · B"#$CD TiO2‘ Cr(Ⅵ)/‹›Ž‚23 S ;,ô >,?@A,ð B (þhÑ&$’%&Ñ&$’,!(|%&˛-KÚº“míî†Àx—z@',!(þh 221000)

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 [)*

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 CHIJ

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 O647.3  <=>?@

 A  <AB;

 0517-6611(2016)15-020-04

AdsorptionPropertiesofIonicImprintedNanoTiO2onCr(Ⅵ)ZHAORui,ZHANGFan,MAOJingjing,LIUHui etal  (CollegeofFoodEngineering,XuzhouInstituteofTechnology,FoodResourceDevelopmentandQualitySafeKeyConstructionLaboratory,Xuzhou,Jiangsu221000)Abstract [Objective]ToresearchtheadsorptionpropertiesofionicimprintednanoTiO2onCr(Ⅵ).[Method]Byusingsurfaceionimprintedtechnique,Cr(Ⅵ)imprintednanometerTiO2waspreparedinaceticacidsolution,withK2Cr2O7astemplatemolecule,chitosanasthefunctionalmonomer,andKH560ascrosslinker.Besides,thestructure,appearanceandadsorptionpropertiesofthispolymerwerestudiedbyadoptingscanningelectronmicroscopy(SEM)andstaticadsorptionbalancedexperiment.[Result]ThispolymerhadagoodabilityofadsorbingCr(Ⅵ)undertheconditionofpH2,adsorptionvibratingfor30minandthe0.30gdosage.Theadsorptionratecouldreach96.2%.Whenputin13mLof1mol/LNaOHsolutionfor40minutes,theratewouldreach90%.Themaximumadsorptioncapacityoftheimprintedandnonimprintedpolymerparticleswere23.5and47.7mg/g,respectively,andtheselectivityofadsorptionwas6.92mg/g.Themaximumenrichmentmultiplewas100.Addingstandardrecoveryratewasbetween95.7% and105.2%,whiletherelativestandarddeviation(RSD)wasbetween1.90% and5.05%.[Conclusion]Cr(Ⅵ)imprintedpolymerhasrelativelygoodadsorptionpropertyandsignificantspecificadsorption.Keywords Ionimprinted;NanoTiO2;Cr(Ⅵ);Enrichment;Separation

CDEF

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,JournalofAnhuiAgri.Sci.2016,44(15):20-23

Page 2: S ô =>> ?@A ð B · B"#$CD TiO2‘ Cr(Ⅵ)/‹›Ž‚23 S ;,ô >,?@A,ð B (þhÑ&$’%&Ñ&$’,!(|%&˛-KÚº“míî†Àx—z@',!(þh 221000)

±²Ë»

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ÅÃÄÑÒdQÈÉ

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K2Cr2O7,KÇë�

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Note:A.NIP;B.IIPun;C.IIP.

9

1 Cr(Ⅵ)#$³G#$abc/������

(200×)

Fig.1 ObservationofSEMimagesofCr(Ⅵ)ionimprintedpolymerandnonimprintedpolymer

2.1.2 ¥ßú¤

(BET)�û¸Q�Vvÿ

。n]a¸Áæ

¤�V

IIP�

NIPQ¥ßú¤�û¸

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2h,�Vvÿ�ß

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。Cr(Ⅵ)åÂÃÄÑÒd

(IIP)Q¥ßú¤#:ÅÃÄ

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ußús0À"

,!

NIPÈÉhÙ¢[¾åÂ

Cr(Ⅵ),��

¥ßú¤í

q

1 abczqÝÞ³H²

Table1 Specificsurfaceareaandporediameterofthepolymer

-&

Sample¥ßú¤

Specificsurfacearea∥m2/g

û¸

Porediameter∥mm

NIP 1.10 7.48IIP-un 5.11 18.95IIP 5.64 20.76

2.2 abc��IJ/��

2.2.1 dÄ

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@=>

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。ç]Þl

ßh

,üÑTb¦¦�a]¦

,!opdakÈ

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9

2 ��

pH`��û/{|

Fig.2 EffectsofpHonadsorptionrate

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KLIJ/��

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 CHIJDE

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Page 3: S ô =>> ?@A ð B · B"#$CD TiO2‘ Cr(Ⅵ)/‹›Ž‚23 S ;,ô >,?@A,ð B (þhÑ&$’%&Ñ&$’,!(|%&˛-KÚº“míî†Àx—z@',!(þh 221000)

9

3 �����1¼`��û/{|

Fig3 Effectsofadsorbentdosageonadsorptionrate

9

4 ��MN#¬`��û/{|

Fig.4 Effectsofoscillationtimeonadsorptionrate

%¢!%¢

。ç»Ì?Q,ÞK

0.8mol/Lh

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5 ��KL�O®`KLû/{|

Fig.5 Effectsofelutionconcentrationondesorptionratio

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30min,åÔ

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9

6 ��KL�1¼`KLû/{|

Fig.6 Effectsofelutiondosageondesorptionratio

9

7 ��MN#¬`KLû/{|

Fig.7 Effectsofoscillationtimeondesorptionratio

pä�#Q

QIIP�QNIIPÁÏ�

47.7�

23.5mg/g,�5Q=

>m§Oj#

。±Y��ÅÃÄÑÒdb=>}~�ìd

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,!ÃÄd�´b#mQÃÄùÀw^ÌÍÎ

Ï�ÊåÂ

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,!/ß:U²\]Q2§

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8 #$c³G#$abc/P(��Q¼

Fig.8 Themaximumadsorptioncapacityofionimprintedpoly

merandnonimprintedpolymer

2.5 �����

 ÚÛU²�D9åÂ

(�

Cu2+、Pb2+、Cd2+、Zn2+),

��

pH�

2,³l=>?@ÁÏ�V1åÂQ

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j

,×ØKÌÍ�=>êm

。aß

2væ

,ÃÄdA

Cr(Ⅵ)Q=>wÐ#:ÅÃÄd

,ÃÄdQÌÍ�=>m�

6.92mg/g。Cr(Ⅵ)ÃÄdAKLD9åÂì0UVQ=>wÐ

`Y/í:A

Cr(Ⅵ)Q=>

,±Y��ÃÄd�QÃÄÀ"

22           Íãäå·¸

                         2016�

Page 4: S ô =>> ?@A ð B · B"#$CD TiO2‘ Cr(Ⅵ)/‹›Ž‚23 S ;,ô >,?@A,ð B (þhÑ&$’%&Ñ&$’,!(|%&˛-KÚº“míî†Àx—z@',!(þh 221000)

A

Cr(Ⅵ)QÌÍ�ÎÏ

,nKË0ÚÛ�=>QwÐ

q

2 Cr(Ⅵ)#$abc/�����

Table2 TheselectivityadsorptionofCr(Ⅵ)ionimprintedpolymer

;8

Element,Þ

Concentrationmg/mL

QIIPmg/g

QNIIPmg/g

△Qmg/g

Cr 0.60 12.80 5.88 6.92Cu 0.60 4.05 2.80 1.25Pb 0.60 3.03 1.75 1.28Cd 0.30 1.85 1.20 0.65Zn 0.30 0.50 0.25 0.25

q

3 P(R=Sã

Table3 Themaximumpreconcentrationfactors

¡°�6

Dilutionratioø¦#m

Stocksolutioncontent∥mg

Õ=>Qm

Adsorptionamount∥mg

HI%

Recoveryrate∥%

25 3 2.901 96.750 3 2.814 93.8100 3 2.718 90.6150 3 2.592 86.4200 3 2.064 68.8300 3 2.454 81.8400 3 2.454 75.0500 3 2.001 66.7

q

4 fghi/!ljk

Table4 Analysisresultsofpracticalsamples

-&S>

Sampletype

-&#m

Samplecontent∥μg/g

HI%

Recoveryrate∥%

ÊMNO

RSD∥%

�)·

Tapwater 0.004 95.7 1.90}·

Riverwater 1.246 98.5 2.84�

Vinegar 0.017 101.2 5.05^/

Soysauce 0.212 105.2 2.75_o

Shrimp 0.462 96.2 3.62

2.6 P(R=Sã/-ù

 `¦�

Cr(Ⅵ)Q#m2V�

3mg,KLopdU

,A./XÿFGÛÜ

。aß

3væ

,ç

./�6í:

100�h

,vVmHI

,HI%b

90%ì�

��`£¤A

Cr(Ⅵ)Q�#./�6�

100�

2.7 fghi!l

 -&djku

,o-¦b�á?@o

päFG=>�§=

,vÿuß

4。3 

j�

Cr(Ⅵ)ÃÄ6Ñ

TiO2ACr(Ⅵ)bpH2Qopä0j

ÜQ=>�

,à�ß:ÅÃÄÑÒd

,Ë0jßQHI*]

%

。`£¤Ë0gh

、ßX

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