Carbonaceous Nanofibers-titanium Dioxide Nanocomposites: Synthesis and Use as a Platform for Removal of Dye Pollutants
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摘要
A mild chemistry route was developed to prepare carbonaceous nanofibers-titanium dioxide(CNF-TiO_2) nanocomposites for removal of dye pollutants. In the process of the template-directed hydrothermal carbonization(HTC), ultrathin Te nanowires were adopted as templates and glucose as the carbon source, and TiO_2 was decorated on CNF via the hydrolysis of tetrabutyltitanate in the presence of CNF in ethanol. The as-prepared materials were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), energy-dispersive X-ray(EDX) and X-ray diffraction(XRD). SEM and TEM observations displayed that TiO_2 nanoparticles were anchored on the CNF. EDX and XRD data confirmed that the assynthesized samples were CNF-TiO_2, and TiO_2 belonged to anatase titania. Taking advantage of combined benefits of carbonaceous nanofibers and titanium dioxide, these CNF-TiO_2 nanocomposites exhibited higher removal efficiency in a short time and showed good reusability. It was showed that over 97% of Rhodamine B could be removed in 15 min without generating the solid and liquid wastes. The removal efficiency of dyes was still over 80% after reuse in five cycles. All the results demonstrate that the as-prepared CNF-TiO_2 composites are effective materials for fast and effective removal of dye pollutants and thus can provide a new platform for dye decontamination.
A mild chemistry route was developed to prepare carbonaceous nanofibers-titanium dioxide(CNF-TiO_2) nanocomposites for removal of dye pollutants. In the process of the template-directed hydrothermal carbonization(HTC), ultrathin Te nanowires were adopted as templates and glucose as the carbon source, and TiO_2 was decorated on CNF via the hydrolysis of tetrabutyltitanate in the presence of CNF in ethanol. The as-prepared materials were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), energy-dispersive X-ray(EDX) and X-ray diffraction(XRD). SEM and TEM observations displayed that TiO_2 nanoparticles were anchored on the CNF. EDX and XRD data confirmed that the assynthesized samples were CNF-TiO_2, and TiO_2 belonged to anatase titania. Taking advantage of combined benefits of carbonaceous nanofibers and titanium dioxide, these CNF-TiO_2 nanocomposites exhibited higher removal efficiency in a short time and showed good reusability. It was showed that over 97% of Rhodamine B could be removed in 15 min without generating the solid and liquid wastes. The removal efficiency of dyes was still over 80% after reuse in five cycles. All the results demonstrate that the as-prepared CNF-TiO_2 composites are effective materials for fast and effective removal of dye pollutants and thus can provide a new platform for dye decontamination.
A mild chemistry route was developed to prepare carbonaceous nanofibers-titanium dioxide(CNF-TiO_2) nanocomposites for removal of dye pollutants. In the process of the template-directed hydrothermal carbonization(HTC), ultrathin Te nanowires were adopted as templates and glucose as the carbon source, and TiO_2 was decorated on CNF via the hydrolysis of tetrabutyltitanate in the presence of CNF in ethanol. The as-prepared materials were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), energy-dispersive X-ray(EDX) and X-ray diffraction(XRD). SEM and TEM observations displayed that TiO_2 nanoparticles were anchored on the CNF. EDX and XRD data confirmed that the assynthesized samples were CNF-TiO_2, and TiO_2 belonged to anatase titania. Taking advantage of combined benefits of carbonaceous nanofibers and titanium dioxide, these CNF-TiO_2 nanocomposites exhibited higher removal efficiency in a short time and showed good reusability. It was showed that over 97% of Rhodamine B could be removed in 15 min without generating the solid and liquid wastes. The removal efficiency of dyes was still over 80% after reuse in five cycles. All the results demonstrate that the as-prepared CNF-TiO_2 composites are effective materials for fast and effective removal of dye pollutants and thus can provide a new platform for dye decontamination.
引文
[1]Shannon MA,Bohn PW,Elimelech M,et al.Science and Technology for Water Purification in the Coming Decades[J].Nature,2008,452(7185):301-310
[2]Montgomery MA,Elimelech M.Water and Sanitation in Developing Countries:Including Health in the Equation[J].Environ.Sci.Technol.,2007,41(1):17-24
[3]Liang HW,Cao X,Zhang WJ,et al.Robust and Highly Efficient Free-Standing Carbonaceous Nanofiber Membranes for Water Purification[J].Adv.Funct.Mater.,2011,21(20):3 851-3 858
[4]Chong MN,Jin B,Chow C,et al.Recent Developments in Photocatalytic Water Treatment Technology:a Review[J].Water Resources,2010,44(10):2 997-3 027
[5]Kozyatnyk I,L?vgren L,Tysklind M,et al.Multivariate Assessment of Barriers Materials for Treatment of Complex Groundwater Rich in Dissolved Organic Matter and Organic and Inorganic Contaminants[J].Journal of Environmental Chemical Engineering,2017,5(4):3 075-3 082
[6]Sun L,Hu SC,Sun HM,et al.Malachite Green Adsorption onto Fe3O4@SiO2-NH2:Isotherms,Kinetic and Process Optimization[J].RSC Advances,2015,5(16):11 837-11 844
[7]Sun HM,Cao LY,Lu LH.Magnetite/Reduced Graphene Oxide Nanocomposites:One Step Solvothermal Synthesis and Use as a Novel Platform for Removal of Dye Pollutants[J].Nano Res.,2011,4(6):550-562
[8]Beck RJ,Yong Z,Hao F,et al.Electrospun Lignin Carbon Nanofiber Membranes with Large Pores for Highly Efficient Adsorptive Water Treatment Applications[J].Journal of Water Process Engineering,2017,16:240-248
[9]Wu B,Zhu D,Zhang S,et al.The Photochemistry of Carbon Nanotubes and Its Impact on the Photo-degradation of Dye Pollutants in Aqueous Solutions[J].Journal of Colloid&Interface Science,2015,439(439):98
[10]Liang HW,Guan QF,Chen LF,et al.Macroscopic-scale Template Synthesis of Robust Carbonaceous Nanofiber Hydrogels and Aerogels and Their Applications[J].Angew.Chem.Int.Ed.,2012,51(21):5 101-5 105
[11]Asadullah M,Asaduzzaman M,Kabir MS,et al.Chemical and Structural Evaluation of Activated Carbon Prepared from Jute Sticks for Brilliant Green Dye Removal from Aqueous Solution[J].J.Hazard Mater.,2010,174(1):437-443
[12]Yan X,Liu K,Wang T,et al.Atomic Interpretation of High Activity on Transition Metal and Nitrogen-doped Carbon Nanofibers for Catalyzing Oxygen Reduction[J].J.Mater.Chem.A,2017,5(7):3 336-3 345
[13]Chanathaworn J,Bunyakan C,Wiyaratn W,et al.Photocatalytic Decolorization of Basic Dye by Ti O2 Nanoparticle in Photoreactor[J].Songklanakarin Journal o f Science and Technology,2012,34(2):203-210
[14]Chen H,Nanayakkara CE,Grassian VH.Titanium Dioxide Photocatalysis in Atmospheric Chemistry[J].Chem.Rev.,2012,112(11):5 919-5 948
[15]Geltmeyer J,Teixido H,Meire M,et al.TiO2 Functionalized Nanofibrous Membranes for Removal of Organic(Micro)Pollutants from Water[J].Separation&Purification Technology,2017,179:533-541
[16]Lee HU,Lee SC,Choi SH,et al.Highly Visible-light Active Nanoporous TiO2,Photocatalysts for Efficient Solar Photocatalytic Applications[J].Applied Catalysis B Environmental,2013,129(2):106-113
[17]Kasinathan K,Kennedy J,Elayaperumal M,et al.Photodegradation of Organic Pollutants RhB Dye Using UV Simulated Sunlight on Ceria Based TiO2 Nanomaterials for Antibacterial Applications[J].Sci.Rep.,2016,6:38 064
[18]Nakata K,Fujishima A.TiO2 Photocatalysis:Design and Applications[J].Journal of Photochemistry and Photobiology C:Photochemistry Reviews,2012,13(3):169-189
[19]Pelaez M,Nolan NT,Pillai SC,et al.A Review on the Visible Light Active Titanium Dioxide Photocatalysts for Environmental Applications[J].Applied Catalysis B Environmental,2012,125(33):331-349
[20]Song Z,Fathizadeh M,Huang Y,et al.TiO2 Nanofiltration Membranes Prepared by Molecular Layer Deposition for Water Purification[J].Journal of Membrane Science,2016,510:72-78
[21]Luo S,Yan B,Cao M,et al.Enhanced Photocatalytic Activity of C-TiO2 Thin Films Prepared by Magnetron Sputtering and Post-carbon Ion Implantation[J].Journal of Wuhan University of Technology-Mater.Sci.Ed.,2015,30(2):245-249
[22]Orha C,Manea F,Pop A,et al.TiO2-nanostructured Carbon Composite Sorbent/Photocatalyst for Humic Acid Removal from Water[J].Desalination&Water Treatment,2016,57(30):14 178-14 187
[23]Sun L,Zhao Z,Zhou Y,et al.Anatase Ti O2 Nanocrystals with Exposed{001}Facets on Graphene Sheets via Molecular Grafting for Enhanced Photocatalytic Activity[J].Nanoscale,2012,4(2):613-620
[24]Zhao L,Chen XF,Wang XC,et al.One-step Solvothermal Synthesis of a Carbon@TiO2 Dyade Structure Effectively Promoting Visible-light Photocatalysis[J].Adv.Mater.,2010,22(30):3 317-3 321
[25]Shi X,Yang X,Wang S,et al.Photocatalytic Degradation of Rhodamine B Dye with MWCNT/TiO2/C60 Composites by a Hydrothermal Method[J].Journal of Wuhan University of Technology-Materials Science Edition,2011,26(1):65-69
[26]Zhang X,Zhang T,Ng J,et al.High-performance Multifunctional Ti O2 Nanowire Ultrafiltration Membrane with a Hierarchical Layer Structure for Water Treatment[J].Adv.Funct.Mater.,2009,19(23):3731-3 736
[27]Roy P,Dey T,Lee K,et al.Size-selective Separation of Macromolecules by Nanochannel Titania Membrane with Self-cleaning(Declogging)Ability[J].J.Am.Chem.Soc.,2010,132:7 893-7 895
[28]Wang L,Chen PY,Lin HT,et al.Carbonaceous Nanofiber Membranes for Selective Filtration and Separation of Nanoparticles[J].Advanced Materials,2010,22(42):4 691-4 695
[29]Liang HW,Zhang WJ,Ma YN,et al.Highly Active Carbonaceous Nanofibers:A Versatile Scaffold for Constructing Multifunctional Free-standing Membranes[J].ACS Nano,2011,5(10):8 148-8 161
[2]Montgomery MA,Elimelech M.Water and Sanitation in Developing Countries:Including Health in the Equation[J].Environ.Sci.Technol.,2007,41(1):17-24
[3]Liang HW,Cao X,Zhang WJ,et al.Robust and Highly Efficient Free-Standing Carbonaceous Nanofiber Membranes for Water Purification[J].Adv.Funct.Mater.,2011,21(20):3 851-3 858
[4]Chong MN,Jin B,Chow C,et al.Recent Developments in Photocatalytic Water Treatment Technology:a Review[J].Water Resources,2010,44(10):2 997-3 027
[5]Kozyatnyk I,L?vgren L,Tysklind M,et al.Multivariate Assessment of Barriers Materials for Treatment of Complex Groundwater Rich in Dissolved Organic Matter and Organic and Inorganic Contaminants[J].Journal of Environmental Chemical Engineering,2017,5(4):3 075-3 082
[6]Sun L,Hu SC,Sun HM,et al.Malachite Green Adsorption onto Fe3O4@SiO2-NH2:Isotherms,Kinetic and Process Optimization[J].RSC Advances,2015,5(16):11 837-11 844
[7]Sun HM,Cao LY,Lu LH.Magnetite/Reduced Graphene Oxide Nanocomposites:One Step Solvothermal Synthesis and Use as a Novel Platform for Removal of Dye Pollutants[J].Nano Res.,2011,4(6):550-562
[8]Beck RJ,Yong Z,Hao F,et al.Electrospun Lignin Carbon Nanofiber Membranes with Large Pores for Highly Efficient Adsorptive Water Treatment Applications[J].Journal of Water Process Engineering,2017,16:240-248
[9]Wu B,Zhu D,Zhang S,et al.The Photochemistry of Carbon Nanotubes and Its Impact on the Photo-degradation of Dye Pollutants in Aqueous Solutions[J].Journal of Colloid&Interface Science,2015,439(439):98
[10]Liang HW,Guan QF,Chen LF,et al.Macroscopic-scale Template Synthesis of Robust Carbonaceous Nanofiber Hydrogels and Aerogels and Their Applications[J].Angew.Chem.Int.Ed.,2012,51(21):5 101-5 105
[11]Asadullah M,Asaduzzaman M,Kabir MS,et al.Chemical and Structural Evaluation of Activated Carbon Prepared from Jute Sticks for Brilliant Green Dye Removal from Aqueous Solution[J].J.Hazard Mater.,2010,174(1):437-443
[12]Yan X,Liu K,Wang T,et al.Atomic Interpretation of High Activity on Transition Metal and Nitrogen-doped Carbon Nanofibers for Catalyzing Oxygen Reduction[J].J.Mater.Chem.A,2017,5(7):3 336-3 345
[13]Chanathaworn J,Bunyakan C,Wiyaratn W,et al.Photocatalytic Decolorization of Basic Dye by Ti O2 Nanoparticle in Photoreactor[J].Songklanakarin Journal o f Science and Technology,2012,34(2):203-210
[14]Chen H,Nanayakkara CE,Grassian VH.Titanium Dioxide Photocatalysis in Atmospheric Chemistry[J].Chem.Rev.,2012,112(11):5 919-5 948
[15]Geltmeyer J,Teixido H,Meire M,et al.TiO2 Functionalized Nanofibrous Membranes for Removal of Organic(Micro)Pollutants from Water[J].Separation&Purification Technology,2017,179:533-541
[16]Lee HU,Lee SC,Choi SH,et al.Highly Visible-light Active Nanoporous TiO2,Photocatalysts for Efficient Solar Photocatalytic Applications[J].Applied Catalysis B Environmental,2013,129(2):106-113
[17]Kasinathan K,Kennedy J,Elayaperumal M,et al.Photodegradation of Organic Pollutants RhB Dye Using UV Simulated Sunlight on Ceria Based TiO2 Nanomaterials for Antibacterial Applications[J].Sci.Rep.,2016,6:38 064
[18]Nakata K,Fujishima A.TiO2 Photocatalysis:Design and Applications[J].Journal of Photochemistry and Photobiology C:Photochemistry Reviews,2012,13(3):169-189
[19]Pelaez M,Nolan NT,Pillai SC,et al.A Review on the Visible Light Active Titanium Dioxide Photocatalysts for Environmental Applications[J].Applied Catalysis B Environmental,2012,125(33):331-349
[20]Song Z,Fathizadeh M,Huang Y,et al.TiO2 Nanofiltration Membranes Prepared by Molecular Layer Deposition for Water Purification[J].Journal of Membrane Science,2016,510:72-78
[21]Luo S,Yan B,Cao M,et al.Enhanced Photocatalytic Activity of C-TiO2 Thin Films Prepared by Magnetron Sputtering and Post-carbon Ion Implantation[J].Journal of Wuhan University of Technology-Mater.Sci.Ed.,2015,30(2):245-249
[22]Orha C,Manea F,Pop A,et al.TiO2-nanostructured Carbon Composite Sorbent/Photocatalyst for Humic Acid Removal from Water[J].Desalination&Water Treatment,2016,57(30):14 178-14 187
[23]Sun L,Zhao Z,Zhou Y,et al.Anatase Ti O2 Nanocrystals with Exposed{001}Facets on Graphene Sheets via Molecular Grafting for Enhanced Photocatalytic Activity[J].Nanoscale,2012,4(2):613-620
[24]Zhao L,Chen XF,Wang XC,et al.One-step Solvothermal Synthesis of a Carbon@TiO2 Dyade Structure Effectively Promoting Visible-light Photocatalysis[J].Adv.Mater.,2010,22(30):3 317-3 321
[25]Shi X,Yang X,Wang S,et al.Photocatalytic Degradation of Rhodamine B Dye with MWCNT/TiO2/C60 Composites by a Hydrothermal Method[J].Journal of Wuhan University of Technology-Materials Science Edition,2011,26(1):65-69
[26]Zhang X,Zhang T,Ng J,et al.High-performance Multifunctional Ti O2 Nanowire Ultrafiltration Membrane with a Hierarchical Layer Structure for Water Treatment[J].Adv.Funct.Mater.,2009,19(23):3731-3 736
[27]Roy P,Dey T,Lee K,et al.Size-selective Separation of Macromolecules by Nanochannel Titania Membrane with Self-cleaning(Declogging)Ability[J].J.Am.Chem.Soc.,2010,132:7 893-7 895
[28]Wang L,Chen PY,Lin HT,et al.Carbonaceous Nanofiber Membranes for Selective Filtration and Separation of Nanoparticles[J].Advanced Materials,2010,22(42):4 691-4 695
[29]Liang HW,Zhang WJ,Ma YN,et al.Highly Active Carbonaceous Nanofibers:A Versatile Scaffold for Constructing Multifunctional Free-standing Membranes[J].ACS Nano,2011,5(10):8 148-8 161