溶剂改性氧化石墨烯(GO)杂化反渗透膜性能的研究
|
摘要
研究了不同聚砜(PSF)底膜溶剂N,N-二甲基甲酰胺(DMF)浸泡时间、氧化石墨烯(GO)添加量对改性GO纳米杂化反渗透膜(GO-RO膜)性能的影响。结果表明,底膜在40℃、DMF质量分数30%的水溶液中浸泡50 min后,所得GO-RO膜具有较好的分离性能,水通量为85 L/(m~2·h),截留率为99.1%,水通量较底膜未浸泡的GO-RO膜提高近75%。使用浸泡50 min的底膜所制备的GO-RO膜在添加GO的质量分数为0.05%时,膜表面GO团聚较少,性能较为优良,水通量为80 L/(m~2·h),截留率为99.1%,水通量较空白对照组提高近100%。原子力显微镜分析显示,随着GO添加量的增加,膜表面粗糙度不断的增加;X射线光电子能谱仪分析显示,随着GO添加量的增加,膜分离层中GO含量也不断的增加。
The effects of different soaking time of polysulfone(PSF) base membrane in N,N-dimethylformamide(DMF) solvent and graphene oxide(GO)dosage on the properties of modified GO nano hybrid reverse osmosis(GO-RO) membrane were studied. The results showed that, the GO-RO membrane had good separation performance after soaking for 50 min in 40 ℃ and aqueous solution with DMF mass fraction of 30%, the water flux was 85 L/(m~2·h)and the rejection rate was 99.1%, the water flux was nearly 75% higher than the GO-RO membrane with unsoaked base membrane. When the mass fraction of GO was 0.05%, the GO-RO membrane prepared by soaking for 50 min had less GO agglomeration on the surface of the membrane, and the performance was better, the water flux was 80 L/(m~2·h), and the rejection rate was 99.1%, the water flux increased by nearly 100% compared to the blank control group. AFM analysis showed that the surface roughness of the membrane increased with the increase of GO addition; XPS analysis showed that the GO content in the separation layer of the membrane also increased with the increase of GO addition.
The effects of different soaking time of polysulfone(PSF) base membrane in N,N-dimethylformamide(DMF) solvent and graphene oxide(GO)dosage on the properties of modified GO nano hybrid reverse osmosis(GO-RO) membrane were studied. The results showed that, the GO-RO membrane had good separation performance after soaking for 50 min in 40 ℃ and aqueous solution with DMF mass fraction of 30%, the water flux was 85 L/(m~2·h)and the rejection rate was 99.1%, the water flux was nearly 75% higher than the GO-RO membrane with unsoaked base membrane. When the mass fraction of GO was 0.05%, the GO-RO membrane prepared by soaking for 50 min had less GO agglomeration on the surface of the membrane, and the performance was better, the water flux was 80 L/(m~2·h), and the rejection rate was 99.1%, the water flux increased by nearly 100% compared to the blank control group. AFM analysis showed that the surface roughness of the membrane increased with the increase of GO addition; XPS analysis showed that the GO content in the separation layer of the membrane also increased with the increase of GO addition.
引文
[1]ELIMELECH M,PHILLIP W A.The Future of seawater desalination:energy,technology,and the environment[J].Science,2011,333(6043):712-717.
[2]SON S H,JEGAL J.Preparation and characterization of polyamide reverse-osmosis membranes with good chlorine tolerance[J].Journal of Applied Polymer Science,2011,120(3):1245-1252.
[3]International Desalination Association,IDA desalination yearbook2011-2012[R].Oxford:Global Water Intelligence,Media Analytics Ltd,2011.
[4]DUAN J,LITWILLER E,PINNAU I.Preparation and water desalination properties of POSS-polyamide nanocomposite reverse osmosis membranes[J].Journal of Membrane Science,2015,473:157-164.
[5]PERREAULT F,TOUSLEY M E,ELIMELECH M.Thin-film composite polyamide membranes functionalized with biocidal graphene oxide nanosheets[J].Environ Sci Technol Lett,2016,1(1):71-76.
[6]CHOI W,CHOI J,BANG J,et al.Layer-by-Layer assembly of graphene oxide nanosheets on polyamide membranes for durable reverse-osmosis applications[J].Acs Appl Mater Interfaces,2013,5(23):12510-12519.
[7]HUANG X,MARSH K L,MCVERRY B T,et al.Low-fouling antibacterial reverse osmosis membranes via surface grafting of graphene oxide[J].ACS Applied Materials&Interfaces,2016:acsami.6b05293.
[8]XIA X,CHAO D,ZHANG Y,et al.Generic synthesis of carbon nanotube branches on metal oxide arrays exhibiting stable high-rate and long-cycle sodium-ion storage[J].Small,2016,12(22):3048-3058.
[9]SON D R,RAGHU A V,REDDY K R,et al.Compatibility of thermally reduced graphene with polyesters[J].Journal of Macromolecular Science,Part B,2016,55(11):12.
[10]REDDY K R,SIN B C,RYU K S,et al.In situ self-organization of carbon black-polyaniline composites from nanospheres to nanorods:Synthesis,morphology,structure and electrical conductivity[J].Synthetic Metals,2009,159(19):1934-1939.
[11]HASSAN M,HAQUE E,REDDY K R,et al.Edge-enriched graphene quantum dots for enhanced photo-luminescence and supercapacitance[J].Nanoscale,2014,6(20):11988-11994.
[12]REDDY K R,SIN B C,YOO C H,et al.A new one-step synthesis method for coating multi-walled carbon nanotubes with cuprous oxide nanoparticles[J].Scripta Materialia,2008,58(11):1010-1013.
[13]RAGHAVA R K,GOMES V G,HASSAN M.Carbon functionalized TiO2nanofibers for high efficiency photocatalysis[J].Materials Research Express,2014,1(1):015012.
[14]Sabine F,Rainer K,Nielsen J.Synthesis of metal(Fe or Pd)/alloy(FePd)-nanoparticles-embedded multiwall carbon nanotube/sulfonated polyaniline composites byγirradiation[J].Journal of Polymer Science Part A Polymer Chemistry,2010,44(10):3355-3364.
[15]KHAN M U,REDDY K R,SNGUANWONGCHAI T,et al.Polymer brush synthesis on surface modified carbon nanotubes via in situ emulsion polymerization[J].Colloid and Polymer Science,2016,294(10):1599-1610.
[16]REDDY K R,HASSAN M,GOMES V G.Hybrid nanostructures based on titanium dioxide for enhanced photocatalysis[J].Applied Catalysis A General,2015,489:1-16.
[17]CAKICI M,KAKARLA R R,ALONSOMARROQUIN F.Advanced electrochemical energy storage supercapacitors based on the flexible carbon fiber fabric-coated with uniform coral-like MnO2structured electrodes[J].Chemical Engineering Journal,2017,309:151-158.
[2]SON S H,JEGAL J.Preparation and characterization of polyamide reverse-osmosis membranes with good chlorine tolerance[J].Journal of Applied Polymer Science,2011,120(3):1245-1252.
[3]International Desalination Association,IDA desalination yearbook2011-2012[R].Oxford:Global Water Intelligence,Media Analytics Ltd,2011.
[4]DUAN J,LITWILLER E,PINNAU I.Preparation and water desalination properties of POSS-polyamide nanocomposite reverse osmosis membranes[J].Journal of Membrane Science,2015,473:157-164.
[5]PERREAULT F,TOUSLEY M E,ELIMELECH M.Thin-film composite polyamide membranes functionalized with biocidal graphene oxide nanosheets[J].Environ Sci Technol Lett,2016,1(1):71-76.
[6]CHOI W,CHOI J,BANG J,et al.Layer-by-Layer assembly of graphene oxide nanosheets on polyamide membranes for durable reverse-osmosis applications[J].Acs Appl Mater Interfaces,2013,5(23):12510-12519.
[7]HUANG X,MARSH K L,MCVERRY B T,et al.Low-fouling antibacterial reverse osmosis membranes via surface grafting of graphene oxide[J].ACS Applied Materials&Interfaces,2016:acsami.6b05293.
[8]XIA X,CHAO D,ZHANG Y,et al.Generic synthesis of carbon nanotube branches on metal oxide arrays exhibiting stable high-rate and long-cycle sodium-ion storage[J].Small,2016,12(22):3048-3058.
[9]SON D R,RAGHU A V,REDDY K R,et al.Compatibility of thermally reduced graphene with polyesters[J].Journal of Macromolecular Science,Part B,2016,55(11):12.
[10]REDDY K R,SIN B C,RYU K S,et al.In situ self-organization of carbon black-polyaniline composites from nanospheres to nanorods:Synthesis,morphology,structure and electrical conductivity[J].Synthetic Metals,2009,159(19):1934-1939.
[11]HASSAN M,HAQUE E,REDDY K R,et al.Edge-enriched graphene quantum dots for enhanced photo-luminescence and supercapacitance[J].Nanoscale,2014,6(20):11988-11994.
[12]REDDY K R,SIN B C,YOO C H,et al.A new one-step synthesis method for coating multi-walled carbon nanotubes with cuprous oxide nanoparticles[J].Scripta Materialia,2008,58(11):1010-1013.
[13]RAGHAVA R K,GOMES V G,HASSAN M.Carbon functionalized TiO2nanofibers for high efficiency photocatalysis[J].Materials Research Express,2014,1(1):015012.
[14]Sabine F,Rainer K,Nielsen J.Synthesis of metal(Fe or Pd)/alloy(FePd)-nanoparticles-embedded multiwall carbon nanotube/sulfonated polyaniline composites byγirradiation[J].Journal of Polymer Science Part A Polymer Chemistry,2010,44(10):3355-3364.
[15]KHAN M U,REDDY K R,SNGUANWONGCHAI T,et al.Polymer brush synthesis on surface modified carbon nanotubes via in situ emulsion polymerization[J].Colloid and Polymer Science,2016,294(10):1599-1610.
[16]REDDY K R,HASSAN M,GOMES V G.Hybrid nanostructures based on titanium dioxide for enhanced photocatalysis[J].Applied Catalysis A General,2015,489:1-16.
[17]CAKICI M,KAKARLA R R,ALONSOMARROQUIN F.Advanced electrochemical energy storage supercapacitors based on the flexible carbon fiber fabric-coated with uniform coral-like MnO2structured electrodes[J].Chemical Engineering Journal,2017,309:151-158.