The Experts below are selected from a list of 1038 Experts worldwide ranked by ideXlab platform
Celal Duran - One of the best experts on this subject based on the ideXlab platform.
-
synthesis and characterization of Cadmium Sulfide Nanoparticle loaded activated carbon as a novel adsorbent for efficient removal of reactive orange 12
Chemical Engineering Communications, 2013Co-Authors: Mehrorang Ghaedi, A. Amiri Pebdani, B. Sadeghian, Reza Sahraei, Ali Daneshfar, Celal DuranAbstract:The objective of this study was to evaluate the adsorption potential of Cadmium Sulfide Nanoparticle–loaded activated carbon (CdSN-AC) for removal of reactive orange 12 (RO-12) dyestuffs from aqueous solutions. The characterization of CdSN-AC was performed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM) techniques. The effects of experimental parameters such as initial solution pH, contact time, initial RO-12 concentration, amount of CdSN-AC, and temperature on the adsorption process were evaluated in detail. The kinetic studies indicated that the adsorption process was best described by the pseudo-second-order kinetics model. The experimental data were analyzed by the Langmuir, Freundlich, and Tempkin isotherm models, and the monolayer adsorption capacity of CdSN-AC was found to be 150.0 mg g−1 by using the Langmuir isotherm model. The thermodynamic parameters indicated that the adsorption of RO-12 onto CdSN-AC was feasible, spon...
-
SYNTHESIS AND CHARACTERIZATION OF Cadmium Sulfide Nanoparticle–LOADED ACTIVATED CARBON AS A NOVEL ADSORBENT FOR EFFICIENT REMOVAL OF REACTIVE ORANGE 12
Chemical Engineering Communications, 2013Co-Authors: Mehrorang Ghaedi, A. Amiri Pebdani, B. Sadeghian, Reza Sahraei, Ali Daneshfar, Celal DuranAbstract:The objective of this study was to evaluate the adsorption potential of Cadmium Sulfide Nanoparticle–loaded activated carbon (CdSN-AC) for removal of reactive orange 12 (RO-12) dyestuffs from aqueous solutions. The characterization of CdSN-AC was performed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM) techniques. The effects of experimental parameters such as initial solution pH, contact time, initial RO-12 concentration, amount of CdSN-AC, and temperature on the adsorption process were evaluated in detail. The kinetic studies indicated that the adsorption process was best described by the pseudo-second-order kinetics model. The experimental data were analyzed by the Langmuir, Freundlich, and Tempkin isotherm models, and the monolayer adsorption capacity of CdSN-AC was found to be 150.0 mg g−1 by using the Langmuir isotherm model. The thermodynamic parameters indicated that the adsorption of RO-12 onto CdSN-AC was feasible, spon...
Arben Merkoçi - One of the best experts on this subject based on the ideXlab platform.
-
Electrochemical stripping detection of DNA hybridization based on Cadmium Sulfide Nanoparticle tags
Electrochemistry Communications, 2002Co-Authors: Joseph Wang, Guodong Liu, Ronen Polsky, Arben MerkoçiAbstract:Abstract We report on the detection of DNA hybridization in connection to Cadmium Sulfide Nanoparticle tracers and electrochemical stripping measurements of the Cadmium. A Nanoparticle-promoted Cadmium precipitation is used to enlarge the Nanoparticle tag and amplify the stripping DNA hybridization signal. In addition to measurements of the dissolved Cadmium ion we demonstrate solid-state measurements following a ‘magnetic’ collection of the magnetic-bead/DNA-hybrid/CdS-tracer assembly onto a thick-film electrode transducer. The new protocol combines the amplification features of Nanoparticle/polynucleotides assemblies and highly sensitive stripping potentiometric detection of Cadmium, with an effective magnetic isolation of the duplex. The low detection limit (100 fmol) is coupled to good reproducibility (RSD=6%). Prospects for using binary inorganic colloids for multi-target detection are discussed.
-
Electrochemical stripping detection of DNA hybridization based on Cadmium Sulfide Nanoparticle tags
Elsevier, 2002Co-Authors: Joseph Wang, Guodong Liu, Ronen Polsky, Arben MerkoçiAbstract:We report on the detection of DNA hybridization in connection to Cadmium Sulfide Nanoparticle tracers and electrochemical stripping measurements of the Cadmium. A Nanoparticle-promoted Cadmium precipitation is used to enlarge the Nanoparticle tag and amplify the stripping DNA hybridization signal. In addition to measurements of the dissolved Cadmium ion we demonstrate solid-state measurements following a ‘magnetic’ collection of the magnetic-bead/DNA-hybrid/CdS-tracer assembly onto a thick-film electrode transducer. The new protocol combines the amplification features of Nanoparticle/polynucleotides assemblies and highly sensitive stripping potentiometric detection of Cadmium, with an effective magnetic isolation of the duplex. The low detection limit (100 fmol) is coupled to good reproducibility (RSD=6%). Prospects for using binary inorganic colloids for multi-target detection are discussed. Keywords: Nanoparticles, DNA hybridization, Cadmium Sulfide, Stripping potentiometr
Hajime Ishihara - One of the best experts on this subject based on the ideXlab platform.
-
plasmon enhanced photocatalytic activity of Cadmium Sulfide Nanoparticle immobilized on silica coated gold particles
Journal of Physical Chemistry Letters, 2011Co-Authors: Tsukasa Torimoto, Hiroki Horibe, Tatsuya Kameyama, Kenichi Okazaki, Shigeru Ikeda, Michio Matsumura, Akira Ishikawa, Hajime IshiharaAbstract:Nanocomposite photocatalysts of CdS Nanoparticles immobilized on Au core–SiO2 shell particles, in which the SiO2 layer acts as an insulator layer to prevent direct electron transfer from photoexcited CdS to Au particles, were prepared. The photocatalytic activity of CdS particles for H2 evolution was greatly dependent on the distance between CdS and Au particles, due to the locally enhanced electric field produced by photoexcitation of the localized surface plasmon resonance (LSPR) peak of Au particles. Increase in Au core size enlarged the optimal distance between Au and CdS for the enhancement of photocatalysis. This behavior was theoretically reproduced by solving a self-consistent equation system, in which the range of energy dissipation became wider for larger diameter of the Au sphere, and then the balance with the enhancement of photoexcitation of CdS particles by the LSPR-induced electric field was changed.
A. A. Rempel’ - One of the best experts on this subject based on the ideXlab platform.
-
Structure of Cadmium Sulfide Nanoparticle micelle in aqueous solutions
Russian Chemical Bulletin, 2013Co-Authors: A. A. Rempel’, N. S. Kozhevnikova, S. V. Rempel’Abstract:The structure of Cadmium Sulfide (CdS) micelle in stable aqueous solution of ethylenediaminetetraacetic acid was determined by dynamic light scattering, small-angle X-ray scattering and neutron scattering. The micelle aggregate is a single CdS Nanoparticle with an average size of about 3 nm, the Nanoparticle organic shell and the solvation shell are about 1 nm and 5 nm thick, respectively. These parameters were confirmed by the scanning semi-contact atomic force microscopy and powder X-ray diffraction studies of dry micelle cores isolated by high-speed centrifugation. The CdS micelle was correctly described by a simple double-shell model and was found to possess the structure corresponding to CdS quantum dots.
-
Direct-space visualization of the short and “average” long-range orders in the noncrystalline structure of a single Cadmium Sulfide Nanoparticle
JETP Letters, 2010Co-Authors: A. S. Vorokh, A. A. Rempel’Abstract:A method has been proposed for identifying the noncrystalline structure of CdS Nanoparticles in the direct space by interpreting an image obtained by high-resolution transmission electron microscopy. The short and average long-range orders and microstrains in the disordered close-packed structure of the CdS Nanoparticle have been visualized. It has been shown that the direct-space image of the average lattice with the space group P 6 appears due to the moiré effect in the noncrystalline structure.
Mehrorang Ghaedi - One of the best experts on this subject based on the ideXlab platform.
-
synthesis and characterization of Cadmium Sulfide Nanoparticle loaded activated carbon as a novel adsorbent for efficient removal of reactive orange 12
Chemical Engineering Communications, 2013Co-Authors: Mehrorang Ghaedi, A. Amiri Pebdani, B. Sadeghian, Reza Sahraei, Ali Daneshfar, Celal DuranAbstract:The objective of this study was to evaluate the adsorption potential of Cadmium Sulfide Nanoparticle–loaded activated carbon (CdSN-AC) for removal of reactive orange 12 (RO-12) dyestuffs from aqueous solutions. The characterization of CdSN-AC was performed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM) techniques. The effects of experimental parameters such as initial solution pH, contact time, initial RO-12 concentration, amount of CdSN-AC, and temperature on the adsorption process were evaluated in detail. The kinetic studies indicated that the adsorption process was best described by the pseudo-second-order kinetics model. The experimental data were analyzed by the Langmuir, Freundlich, and Tempkin isotherm models, and the monolayer adsorption capacity of CdSN-AC was found to be 150.0 mg g−1 by using the Langmuir isotherm model. The thermodynamic parameters indicated that the adsorption of RO-12 onto CdSN-AC was feasible, spon...
-
SYNTHESIS AND CHARACTERIZATION OF Cadmium Sulfide Nanoparticle–LOADED ACTIVATED CARBON AS A NOVEL ADSORBENT FOR EFFICIENT REMOVAL OF REACTIVE ORANGE 12
Chemical Engineering Communications, 2013Co-Authors: Mehrorang Ghaedi, A. Amiri Pebdani, B. Sadeghian, Reza Sahraei, Ali Daneshfar, Celal DuranAbstract:The objective of this study was to evaluate the adsorption potential of Cadmium Sulfide Nanoparticle–loaded activated carbon (CdSN-AC) for removal of reactive orange 12 (RO-12) dyestuffs from aqueous solutions. The characterization of CdSN-AC was performed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM) techniques. The effects of experimental parameters such as initial solution pH, contact time, initial RO-12 concentration, amount of CdSN-AC, and temperature on the adsorption process were evaluated in detail. The kinetic studies indicated that the adsorption process was best described by the pseudo-second-order kinetics model. The experimental data were analyzed by the Langmuir, Freundlich, and Tempkin isotherm models, and the monolayer adsorption capacity of CdSN-AC was found to be 150.0 mg g−1 by using the Langmuir isotherm model. The thermodynamic parameters indicated that the adsorption of RO-12 onto CdSN-AC was feasible, spon...
