The Experts below are selected from a list of 82506 Experts worldwide ranked by ideXlab platform
Erkang Wang - One of the best experts on this subject based on the ideXlab platform.
-
easy synthesis and imaging applications of cross linked green fluorescent hollow Carbon Nanoparticles
ACS Nano, 2012Co-Authors: Youxing Fang, Chengzhou Zhu, Shaoju Guo, Shaoju Dong, Erkang WangAbstract:We propose an ingenious method for synthesizing cross-linked hollow fluorescent Carbon Nanoparticles (HFCNs) with green emission by simply mixing acetic acid, water, and diphosphorus pentoxide. This is an automatic method without external heat treatment to rapidly produce large quantities of HFCNs, in contrast to other syntheses of fluorescent Carbon Nanoparticles that required high temperature, complicated operations, or long reaction times. Characterizations of HFCNs through high-resolution transmission electron microscopy, infrared/Raman spectroscopy, and X-ray diffraction indicate that abundant small oxygenous graphite domains existed and endowed the HFCNs with fluorescent properties. After simple post-treatments, the cross-linked HFCNs can be used for cell-imaging applications. Compared with traditional dyes and CdTe quantum dots, HFCNs are the superior fluorescent bioimaging agent according to their low toxicity, stability, and resistance to photobleaching. The HFCNs were also applied to watermark i...
-
Easy synthesis and imaging applications of cross-linked green fluorescent hollow Carbon Nanoparticles
ACS Nano, 2012Co-Authors: Youxing Fang, Wen Ren, Shaojun Guo, Chengzhou Zhu, Shaojun Dong, Erkang WangAbstract:We propose an ingenious method for synthesizing cross-linked hollow fluorescent Carbon Nanoparticles (HFCNs) with green emission by simply mixing acetic acid, water, and diphosphorus pentoxide. This is an automatic method without external heat treatment to rapidly produce large quantities of HFCNs, in contrast to other syntheses of fluorescent Carbon Nanoparticles that required high temperature, complicated operations, or long reaction times. Characterizations of HFCNs through high-resolution transmission electron microscopy, infrared/Raman spectroscopy, and X-ray diffraction indicate that abundant small oxygenous graphite domains existed and endowed the HFCNs with fluorescent properties. After simple post-treatments, the cross-linked HFCNs can be used for cell-imaging applications. Compared with traditional dyes and CdTe quantum dots, HFCNs are the superior fluorescent bioimaging agent according to their low toxicity, stability, and resistance to photobleaching. The HFCNs were also applied to watermark ink and fluorescent powder, showing their promising potentials for further wide usage.
Shuittong Lee - One of the best experts on this subject based on the ideXlab platform.
-
water soluble Carbon Nanoparticles hydrothermal synthesis and excellent photoluminescence properties
Colloids and Surfaces B: Biointerfaces, 2011Co-Authors: Yang Liu, Zhenhui Kang, Shuittong Lee, Hui HuangAbstract:Water-soluble Carbon Nanoparticles (CNPs) were fabricated by a facile, one step hydrothermal synthetic route using acid/alkali as additives. These CNPs emit bright photoluminescence (PL) covering the entire visible-near infrared (NIR) spectral range. PL measurements confirmed that the CNPs have up-conversion of PL properties, and that the NIR PL of the CNPs can also be observed by NIR excitation. Control experiments indicated that different additives can strongly affect the PL properties of the CNPs. With a combination of free dispersion in water and attractive PL properties, these CNPs hold promise for applications in nanotechnology.
-
one step ultrasonic synthesis of water soluble Carbon Nanoparticles with excellent photoluminescent properties
Carbon, 2011Co-Authors: Yang Liu, Huihui Huang, Suoyua Lia, Shuittong Lee, Zhenhui KangAbstract:Monodispersed water-soluble fluorescent Carbon Nanoparticles (CNPs) were synthesized directly from glucose by a one-step alkali or acid assisted ultrasonic treatment. The CNPs were characterized by transmission electron microscopy, optical fluorescent microscopy, fluorescent spectrophotometry, fourier transform infrared spectrophotometry and ultraviolet-visible spectrophotometry. The results showed that the particle surfaces were rich in hydroxyl groups, giving them high hydrophilicity. The CNPs could emit bright and colorful photoluminescence covering the entire visible-to-near infrared (NIR) spectral range. Notably, the NIR emission of the CNPs could be obtained by NIR excitation. Furthermore, these CNPs also had excellent up-conversion fluorescent properties.
Shuji Nakanishi - One of the best experts on this subject based on the ideXlab platform.
-
platinum modified covalent triazine frameworks hybridized with Carbon Nanoparticles as methanol tolerant oxygen reduction electrocatalysts
Nature Communications, 2014Co-Authors: Kazuhide Kamiya, Ryo Kamai, Kazuhito Hashimoto, Shuji NakanishiAbstract:Covalent triazine frameworks, which are crosslinked porous polymers with two-dimensional molecular structures, are promising materials for heterogeneous catalysts. However, the application of the frameworks as electrocatalysts has not been achieved to date because of their poor electrical conductivity. Here we report that platinum-modified covalent triazine frameworks hybridized with conductive Carbon Nanoparticles are successfully synthesized by introducing Carbon Nanoparticles during the polymerization process of covalent triazine frameworks. The resulting materials exhibit clear electrocatalytic activity for oxygen reduction reactions in acidic solutions. More interestingly, the platinum-modified covalent triazine frameworks show almost no activity for methanol oxidation, in contrast to commercial Carbon-supported platinum. Thus, platinum-modified covalent triazine frameworks hybridized with Carbon Nanoparticles exhibit selective activity for oxygen reduction reactions even in the presence of high concentrations of methanol, which indicates potential utility as a cathode catalyst in direct methanol fuel cells.
-
platinum modified covalent triazine frameworks hybridized with Carbon Nanoparticles as methanol tolerant oxygen reduction electrocatalysts
Nature Communications, 2014Co-Authors: Kazuhide Kamiya, Ryo Kamai, Kazuhito Hashimoto, Shuji NakanishiAbstract:Covalent triazine frameworks are known catalysts for some catalytic reactions, but show no electrocatalytic activity. Here, the authors synthesize platinum modified covalent triazine frameworks hybridized with Carbon Nanoparticles, which are electro-active for oxygen reduction reactions.
Youxing Fang - One of the best experts on this subject based on the ideXlab platform.
-
easy synthesis and imaging applications of cross linked green fluorescent hollow Carbon Nanoparticles
ACS Nano, 2012Co-Authors: Youxing Fang, Chengzhou Zhu, Shaoju Guo, Shaoju Dong, Erkang WangAbstract:We propose an ingenious method for synthesizing cross-linked hollow fluorescent Carbon Nanoparticles (HFCNs) with green emission by simply mixing acetic acid, water, and diphosphorus pentoxide. This is an automatic method without external heat treatment to rapidly produce large quantities of HFCNs, in contrast to other syntheses of fluorescent Carbon Nanoparticles that required high temperature, complicated operations, or long reaction times. Characterizations of HFCNs through high-resolution transmission electron microscopy, infrared/Raman spectroscopy, and X-ray diffraction indicate that abundant small oxygenous graphite domains existed and endowed the HFCNs with fluorescent properties. After simple post-treatments, the cross-linked HFCNs can be used for cell-imaging applications. Compared with traditional dyes and CdTe quantum dots, HFCNs are the superior fluorescent bioimaging agent according to their low toxicity, stability, and resistance to photobleaching. The HFCNs were also applied to watermark i...
-
Easy synthesis and imaging applications of cross-linked green fluorescent hollow Carbon Nanoparticles
ACS Nano, 2012Co-Authors: Youxing Fang, Wen Ren, Shaojun Guo, Chengzhou Zhu, Shaojun Dong, Erkang WangAbstract:We propose an ingenious method for synthesizing cross-linked hollow fluorescent Carbon Nanoparticles (HFCNs) with green emission by simply mixing acetic acid, water, and diphosphorus pentoxide. This is an automatic method without external heat treatment to rapidly produce large quantities of HFCNs, in contrast to other syntheses of fluorescent Carbon Nanoparticles that required high temperature, complicated operations, or long reaction times. Characterizations of HFCNs through high-resolution transmission electron microscopy, infrared/Raman spectroscopy, and X-ray diffraction indicate that abundant small oxygenous graphite domains existed and endowed the HFCNs with fluorescent properties. After simple post-treatments, the cross-linked HFCNs can be used for cell-imaging applications. Compared with traditional dyes and CdTe quantum dots, HFCNs are the superior fluorescent bioimaging agent according to their low toxicity, stability, and resistance to photobleaching. The HFCNs were also applied to watermark ink and fluorescent powder, showing their promising potentials for further wide usage.
Zhenhui Kang - One of the best experts on this subject based on the ideXlab platform.
-
water soluble Carbon Nanoparticles hydrothermal synthesis and excellent photoluminescence properties
Colloids and Surfaces B: Biointerfaces, 2011Co-Authors: Yang Liu, Zhenhui Kang, Shuittong Lee, Hui HuangAbstract:Water-soluble Carbon Nanoparticles (CNPs) were fabricated by a facile, one step hydrothermal synthetic route using acid/alkali as additives. These CNPs emit bright photoluminescence (PL) covering the entire visible-near infrared (NIR) spectral range. PL measurements confirmed that the CNPs have up-conversion of PL properties, and that the NIR PL of the CNPs can also be observed by NIR excitation. Control experiments indicated that different additives can strongly affect the PL properties of the CNPs. With a combination of free dispersion in water and attractive PL properties, these CNPs hold promise for applications in nanotechnology.
-
one step ultrasonic synthesis of water soluble Carbon Nanoparticles with excellent photoluminescent properties
Carbon, 2011Co-Authors: Yang Liu, Huihui Huang, Suoyua Lia, Shuittong Lee, Zhenhui KangAbstract:Monodispersed water-soluble fluorescent Carbon Nanoparticles (CNPs) were synthesized directly from glucose by a one-step alkali or acid assisted ultrasonic treatment. The CNPs were characterized by transmission electron microscopy, optical fluorescent microscopy, fluorescent spectrophotometry, fourier transform infrared spectrophotometry and ultraviolet-visible spectrophotometry. The results showed that the particle surfaces were rich in hydroxyl groups, giving them high hydrophilicity. The CNPs could emit bright and colorful photoluminescence covering the entire visible-to-near infrared (NIR) spectral range. Notably, the NIR emission of the CNPs could be obtained by NIR excitation. Furthermore, these CNPs also had excellent up-conversion fluorescent properties.
-
Synthesis of fluorescent Carbon Nanoparticles directly from active Carbon via a one-step ultrasonic treatment
Materials Research Bulletin, 2010Co-Authors: Haitao Li, Xiaodie He, Hang Yu, Zhenhui KangAbstract:Water-soluble fluorescent Carbon Nanoparticles were synthesized directly from active Carbon by a one-step hydrogen peroxide-assisted ultrasonic treatment. The Carbon Nanoparticles were characterized by transmission electron microscopy, optical fluorescent microscopy, fluorescent spectroscopy, Fourier transform infrared spectroscopy and ultraviolet-visible spectrophotometer. The results showed that the surface of Carbon Nanoparticles was rich of hydroxyl groups resulting in high hydrophilicity. The Carbon Nanoparticles could emit bright and colorful photoluminescence covering the entire visible-to-near infrared spectral range. Furthermore, these Carbon Nanoparticles also had excellent up-conversion fluorescent properties.