The Experts below are selected from a list of 71370 Experts worldwide ranked by ideXlab platform

Rodney D Priestley - One of the best experts on this subject based on the ideXlab platform.

  • core shell fe3o4 polydopamine nanoparticles serve multipurpose as drug carrier Catalyst Support and carbon adsorbent
    ACS Applied Materials & Interfaces, 2013
    Co-Authors: Rui Liu, Gloria Odusote, Yunlong Guo, Rodney D Priestley
    Abstract:

    We present the synthesis and multifunctional utilization of core–shell Fe3O4 polydopamine nanoparticles (Fe3O4@PDA NPs) to serve as the enabling platform for a range of applications including responsive drug delivery, recyclable Catalyst Support, and adsorbent. Magnetite Fe3O4 NPs formed in a one-pot process by the hydrothermal approach were coated with a polydopamine shell layer of ∼20 nm in thickness. The as prepared Fe3O4@PDA NPs were used for the controlled drug release in a pH-sensitive manner via reversible bonding between catechol and boronic acid groups of PDA and the anticancer drug bortezomib (BTZ), respectively. The facile deposition of Au NPs atop Fe3O4@PDA NPs was achieved by utilizing PDA as both the reducing agent and the coupling agent. The nanoCatalysts exhibited high catalytic performance for the reduction of o-nitrophenol. Furthermore, the recovery and reuse of the Catalyst was demonstrated 10 times without any detectible loss in activity. Finally, the PDA layers were converted into car...

  • Core-shell Fe3O4 polydopamine nanoparticles serve multipurpose as drug carrier, Catalyst Support and carbon adsorbent
    ACS Applied Materials and Interfaces, 2013
    Co-Authors: Rui Liu, Gloria Odusote, Fengli Qu, Yunlong Guo, Rodney D Priestley
    Abstract:

    We present the synthesis and multifunctional utilization of core-shell Fe3O4 polydopamine nanoparticles (Fe3O4@PDA NPs) to serve as the enabling platform for a range of applications including responsive drug delivery, recyclable Catalyst Support, and adsorbent. Magnetite Fe3O4 NPs formed in a one-pot process by the hydrothermal approach were coated with a polydopamine shell layer of ~20 nm in thickness. The as prepared Fe3O4@PDA NPs were used for the controlled drug release in a pH-sensitive manner via reversible bonding between catechol and boronic acid groups of PDA and the anticancer drug bortezomib (BTZ), respectively. The facile deposition of Au NPs atop Fe3O4@PDA NPs was achieved by utilizing PDA as both the reducing agent and the coupling agent. The nanoCatalysts exhibited high catalytic performance for the reduction of o-nitrophenol. Furthermore, the recovery and reuse of the Catalyst was demonstrated 10 times without any detectible loss in activity. Finally, the PDA layers were converted into carbon to obtain Fe3O4@C and used as an adsorbent for the removal of Rhodamine B from an aqueous solution. The synergistic combination of unique features of PDA and magnetic nanoparticles establishes these core-shell NPs as a versatile platform for multiple applications.

Wei Zhou - One of the best experts on this subject based on the ideXlab platform.

  • Laser micro-milling of microchannel on copper sheet as Catalyst Support used in microreactor for hydrogen production
    International Journal of Hydrogen Energy, 2014
    Co-Authors: Wei Zhou, Wenjun Deng, Zhang Junpeng, Lifeng Qin, Ma Shenglin, Yong Tang
    Abstract:

    Abstract Microchannel structure as Catalyst Support has been widely used to construct numerous microreactors for hydrogen production. In this work, the laser micro-milling technique was introduced into the fabrication process of microchannels with different geometry and dimensions. The effects of varying scanning speed, laser output power and number of scans on the surface morphology and geometrical dimension of microchannels have been investigated based on SEM observations. It is found that the change of scanning speed and laser output power significantly affected the surface morphology of microchannel. Moreover, the depth of microchannel was increased when the laser output power and number of scans were increased. Subsequently, the microchannels on copper sheet fabricated by the laser micro-milling technique were used as Catalyst Support to conduct the methanol steam reforming reaction. The better reaction performance of methanol steam reforming in microchannels indicates that laser micro-milling process is probably suitable to fabricate the microchannel reactor for the commercial application.

  • a performance study of methanol steam reforming microreactor with porous copper fiber sintered felt as Catalyst Support for fuel cells
    International Journal of Hydrogen Energy, 2009
    Co-Authors: Hongqing Chen, Minqiang Pan, Yong Tang, Wei Zhou, Xiaoling Wei, Jianhua Xiang
    Abstract:

    Abstract A porous copper fiber sintered felt (PCFSF) as Catalyst Support is used to construct a methanol steam reforming microreactor for hydrogen production. The PCFSF has been produced by solid-state sintering of copper fibers which is fabricated using the cutting method. The impregnation method is employed to coat Cu/Zn/Al/Zr Catalyst on the PCFSF. In this study, the effect of the porosity and manufacturing parameters for the PCFSF on the performance of methanol steam reforming microreactor is studied by varying the gas hourly space velocity (GHSV) and reaction temperature. When the 80% porosity PCFSF sintered at 800 °C in the reduction atmosphere is used as Catalyst Support, it is found that the microreactor shows remarkable superiority in the methanol conversion and H 2 flow rate in comparison to the ones fabricated under other manufacturing parameters. Moreover, the microreactor with this Catalyst-coated PCFSF also demonstrates the excellent stability of catalytic reaction in the methanol steam reforming process.

  • Porous copper fiber sintered felts: An innovative Catalyst Support of methanol steam reformer for hydrogen production
    International Journal of Hydrogen Energy, 2008
    Co-Authors: Yong Tang, Hongqing Chen, Minqiang Pan, Wangyu Liu, Wei Zhou, Hao Yu
    Abstract:

    An innovative Catalyst Support-porous copper fiber sintered felt (PCFSF) with high porosity and large pore size was developed by sintering copper fibers. In the developed process, Cu/Zn/Al/Zr Catalyst was coated on the PCFSF by an impregnation method, and then the coated PCFSF was used in a methanol steam reformer (MSR) for hydrogen production. Comparing with commercial stainless steel fiber sintered felts (SSFSFs) coated with equal mass of Cu/Zn/Al/Zr Catalyst by the same process, obvious advantages were observed in methanol conversion, reformate gas flow rate and H2 production rate when the PCFSF was used as Catalyst Support. The H2 selectivity could reach 98% on PCFSFs. The developed MSR can generate hydrogen enough to provide a power output of 18 W for a fuel cell. Crown Copyright © 2008.

Rui Liu - One of the best experts on this subject based on the ideXlab platform.

  • core shell fe3o4 polydopamine nanoparticles serve multipurpose as drug carrier Catalyst Support and carbon adsorbent
    ACS Applied Materials & Interfaces, 2013
    Co-Authors: Rui Liu, Gloria Odusote, Yunlong Guo, Rodney D Priestley
    Abstract:

    We present the synthesis and multifunctional utilization of core–shell Fe3O4 polydopamine nanoparticles (Fe3O4@PDA NPs) to serve as the enabling platform for a range of applications including responsive drug delivery, recyclable Catalyst Support, and adsorbent. Magnetite Fe3O4 NPs formed in a one-pot process by the hydrothermal approach were coated with a polydopamine shell layer of ∼20 nm in thickness. The as prepared Fe3O4@PDA NPs were used for the controlled drug release in a pH-sensitive manner via reversible bonding between catechol and boronic acid groups of PDA and the anticancer drug bortezomib (BTZ), respectively. The facile deposition of Au NPs atop Fe3O4@PDA NPs was achieved by utilizing PDA as both the reducing agent and the coupling agent. The nanoCatalysts exhibited high catalytic performance for the reduction of o-nitrophenol. Furthermore, the recovery and reuse of the Catalyst was demonstrated 10 times without any detectible loss in activity. Finally, the PDA layers were converted into car...

  • Core-shell Fe3O4 polydopamine nanoparticles serve multipurpose as drug carrier, Catalyst Support and carbon adsorbent
    ACS Applied Materials and Interfaces, 2013
    Co-Authors: Rui Liu, Gloria Odusote, Fengli Qu, Yunlong Guo, Rodney D Priestley
    Abstract:

    We present the synthesis and multifunctional utilization of core-shell Fe3O4 polydopamine nanoparticles (Fe3O4@PDA NPs) to serve as the enabling platform for a range of applications including responsive drug delivery, recyclable Catalyst Support, and adsorbent. Magnetite Fe3O4 NPs formed in a one-pot process by the hydrothermal approach were coated with a polydopamine shell layer of ~20 nm in thickness. The as prepared Fe3O4@PDA NPs were used for the controlled drug release in a pH-sensitive manner via reversible bonding between catechol and boronic acid groups of PDA and the anticancer drug bortezomib (BTZ), respectively. The facile deposition of Au NPs atop Fe3O4@PDA NPs was achieved by utilizing PDA as both the reducing agent and the coupling agent. The nanoCatalysts exhibited high catalytic performance for the reduction of o-nitrophenol. Furthermore, the recovery and reuse of the Catalyst was demonstrated 10 times without any detectible loss in activity. Finally, the PDA layers were converted into carbon to obtain Fe3O4@C and used as an adsorbent for the removal of Rhodamine B from an aqueous solution. The synergistic combination of unique features of PDA and magnetic nanoparticles establishes these core-shell NPs as a versatile platform for multiple applications.

Yong Tang - One of the best experts on this subject based on the ideXlab platform.

  • Laser micro-milling of microchannel on copper sheet as Catalyst Support used in microreactor for hydrogen production
    International Journal of Hydrogen Energy, 2014
    Co-Authors: Wei Zhou, Wenjun Deng, Zhang Junpeng, Lifeng Qin, Ma Shenglin, Yong Tang
    Abstract:

    Abstract Microchannel structure as Catalyst Support has been widely used to construct numerous microreactors for hydrogen production. In this work, the laser micro-milling technique was introduced into the fabrication process of microchannels with different geometry and dimensions. The effects of varying scanning speed, laser output power and number of scans on the surface morphology and geometrical dimension of microchannels have been investigated based on SEM observations. It is found that the change of scanning speed and laser output power significantly affected the surface morphology of microchannel. Moreover, the depth of microchannel was increased when the laser output power and number of scans were increased. Subsequently, the microchannels on copper sheet fabricated by the laser micro-milling technique were used as Catalyst Support to conduct the methanol steam reforming reaction. The better reaction performance of methanol steam reforming in microchannels indicates that laser micro-milling process is probably suitable to fabricate the microchannel reactor for the commercial application.

  • a performance study of methanol steam reforming microreactor with porous copper fiber sintered felt as Catalyst Support for fuel cells
    International Journal of Hydrogen Energy, 2009
    Co-Authors: Hongqing Chen, Minqiang Pan, Yong Tang, Wei Zhou, Xiaoling Wei, Jianhua Xiang
    Abstract:

    Abstract A porous copper fiber sintered felt (PCFSF) as Catalyst Support is used to construct a methanol steam reforming microreactor for hydrogen production. The PCFSF has been produced by solid-state sintering of copper fibers which is fabricated using the cutting method. The impregnation method is employed to coat Cu/Zn/Al/Zr Catalyst on the PCFSF. In this study, the effect of the porosity and manufacturing parameters for the PCFSF on the performance of methanol steam reforming microreactor is studied by varying the gas hourly space velocity (GHSV) and reaction temperature. When the 80% porosity PCFSF sintered at 800 °C in the reduction atmosphere is used as Catalyst Support, it is found that the microreactor shows remarkable superiority in the methanol conversion and H 2 flow rate in comparison to the ones fabricated under other manufacturing parameters. Moreover, the microreactor with this Catalyst-coated PCFSF also demonstrates the excellent stability of catalytic reaction in the methanol steam reforming process.

  • Porous copper fiber sintered felts: An innovative Catalyst Support of methanol steam reformer for hydrogen production
    International Journal of Hydrogen Energy, 2008
    Co-Authors: Yong Tang, Hongqing Chen, Minqiang Pan, Wangyu Liu, Wei Zhou, Hao Yu
    Abstract:

    An innovative Catalyst Support-porous copper fiber sintered felt (PCFSF) with high porosity and large pore size was developed by sintering copper fibers. In the developed process, Cu/Zn/Al/Zr Catalyst was coated on the PCFSF by an impregnation method, and then the coated PCFSF was used in a methanol steam reformer (MSR) for hydrogen production. Comparing with commercial stainless steel fiber sintered felts (SSFSFs) coated with equal mass of Cu/Zn/Al/Zr Catalyst by the same process, obvious advantages were observed in methanol conversion, reformate gas flow rate and H2 production rate when the PCFSF was used as Catalyst Support. The H2 selectivity could reach 98% on PCFSFs. The developed MSR can generate hydrogen enough to provide a power output of 18 W for a fuel cell. Crown Copyright © 2008.

Gloria Odusote - One of the best experts on this subject based on the ideXlab platform.

  • core shell fe3o4 polydopamine nanoparticles serve multipurpose as drug carrier Catalyst Support and carbon adsorbent
    ACS Applied Materials & Interfaces, 2013
    Co-Authors: Rui Liu, Gloria Odusote, Yunlong Guo, Rodney D Priestley
    Abstract:

    We present the synthesis and multifunctional utilization of core–shell Fe3O4 polydopamine nanoparticles (Fe3O4@PDA NPs) to serve as the enabling platform for a range of applications including responsive drug delivery, recyclable Catalyst Support, and adsorbent. Magnetite Fe3O4 NPs formed in a one-pot process by the hydrothermal approach were coated with a polydopamine shell layer of ∼20 nm in thickness. The as prepared Fe3O4@PDA NPs were used for the controlled drug release in a pH-sensitive manner via reversible bonding between catechol and boronic acid groups of PDA and the anticancer drug bortezomib (BTZ), respectively. The facile deposition of Au NPs atop Fe3O4@PDA NPs was achieved by utilizing PDA as both the reducing agent and the coupling agent. The nanoCatalysts exhibited high catalytic performance for the reduction of o-nitrophenol. Furthermore, the recovery and reuse of the Catalyst was demonstrated 10 times without any detectible loss in activity. Finally, the PDA layers were converted into car...

  • Core-shell Fe3O4 polydopamine nanoparticles serve multipurpose as drug carrier, Catalyst Support and carbon adsorbent
    ACS Applied Materials and Interfaces, 2013
    Co-Authors: Rui Liu, Gloria Odusote, Fengli Qu, Yunlong Guo, Rodney D Priestley
    Abstract:

    We present the synthesis and multifunctional utilization of core-shell Fe3O4 polydopamine nanoparticles (Fe3O4@PDA NPs) to serve as the enabling platform for a range of applications including responsive drug delivery, recyclable Catalyst Support, and adsorbent. Magnetite Fe3O4 NPs formed in a one-pot process by the hydrothermal approach were coated with a polydopamine shell layer of ~20 nm in thickness. The as prepared Fe3O4@PDA NPs were used for the controlled drug release in a pH-sensitive manner via reversible bonding between catechol and boronic acid groups of PDA and the anticancer drug bortezomib (BTZ), respectively. The facile deposition of Au NPs atop Fe3O4@PDA NPs was achieved by utilizing PDA as both the reducing agent and the coupling agent. The nanoCatalysts exhibited high catalytic performance for the reduction of o-nitrophenol. Furthermore, the recovery and reuse of the Catalyst was demonstrated 10 times without any detectible loss in activity. Finally, the PDA layers were converted into carbon to obtain Fe3O4@C and used as an adsorbent for the removal of Rhodamine B from an aqueous solution. The synergistic combination of unique features of PDA and magnetic nanoparticles establishes these core-shell NPs as a versatile platform for multiple applications.