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4,100 Newest Publications about the topic dyes

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Removal of methylene blue and neutral red from aqueous solutions by surfactant‐modified magnetic nanoparticles as highly efficient adsorbent

22-Jun-2015 | Mohammad Bagher Gholivand, Yadollah Yamini, Manijeh Dayeni, Shahram Seidi, Environmental Progress, 2015

Sodium dodecyl sulfate‐coated magnetic nanoparticles were utilized as the inexpensive and effective adsorbents to remove neutral red and methylene blue (two cationic dyes) from aqueous solutions. Factors affecting adsorption, including the amounts of adsorbent and surfactant, pH, and contact ...

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High‐Performance Aqueous/Organic Dye‐Sensitized Solar Cells Based on Sensitizers Containing Triethylene Oxide Methyl Ether

22-Jun-2015 | Ryan Yeh‐Yung Lin, Feng‐Ling Wu, Chun‐Ting Li, Pei‐Yu Chen, Kuo‐Chuan Ho, Jiann T. Lin, ChemSusChem, 2015

Abstract Metal‐free dyes (EO1 to EO4) containing the hydrophilic triethylene oxide methyl ether (TEOME) unit in the spacer have been synthesized and used in dye‐sensitized solar cells (DSSCs). Efficient lithium‐ion trapping by TEOME results in improved open‐circuit voltage (VOC), leading to ...

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Molecular Reorganization Energy as a Key Determinant of J-Band Formation in J-Aggregates of Polymethine Dyes

19-Jun-2015 | Alexander Petrenko; Matthias Stein, Journal of Physical Chemistry A, 2015

This work demonstrates the feasibility of the theory of extended multiphonon electron transitions for the description of optical spectra of polymethine dyes and J-aggregates using quantum chemistry. The formation of a strong absorption band in dye monomers and a J-band in their aggregates is ...

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Materials, Vol. 8, Pages 3633-3647: Photocatalytic Membrane Reactor for the Removal of C.I. Disperse Red 73

18-Jun-2015 | Buscio, Valentina ; Brosillon, Stephan ; Mendret, Julie ; Crespi, Martí ; Gutiérrez-Bouzán, Carmen, Materials, 2015

After the dyeing process, part of the dyes used to color textile materials are not fixed into the substrate and are discharged into wastewater as residual dyes. In this study, a heterogeneous photocatalytic process combined with microfiltration has been investigated for the removal of C.I. ...

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Symmetry-Breaking in Cationic Polymethine Dyes: Part 2. Shape of Electronic Absorption Bands Explained by the Thermal Fluctuations of the Solvent Reaction Field

18-Jun-2015 | Artëm E. Masunov; Dane Anderson; Alexandra Ya. Freidzon; Alexander A. Bagaturyants, Journal of Physical Chemistry A, 2015

The electronic absorption spectra of the symmetric cyanines exhibit dramatic dependence on the conjugated chain length: whereas short-chain homologues are characterized by the narrow and sharp absorption bands of high intensity, the long-chain homologues demonstrate very broad, structureless ...

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Facile synthesis of magnetic OMS-2 catalyst for decomposition of organic dyes in aqueous solution with peroxymonosulfate

18-Jun-2015 | Wei Mingyu; Ruan Yang; Luo Shilu; Li Xiaoxia; Xu Aihua; Zhang Ping, New Journal of Chemistry, 2015

Magnetically recyclable nanocomposite, manganese oxide octahedral molecular sieves (OMS-2) coated Fe3O4 nanoparticle, was prepared by a facile solvent-free process with manganese salts and Fe3O4 under a low temperature. XRD, SEM, TEM, FT-IR, XPS and N2 adsorption–desorption isotherm analysis ...

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Modular Polyoxometalate‐Layered Double Hydroxide Composites as Efficient Oxidative Catalysts

17-Jun-2015 | Yang Chen, Zhixiao Yao, Haralampos N. Miras, Yu‐Fei Song, Chemistry - A European Journal, 2015

Abstract The exploitation of intercalation techniques in the field of two‐dimensional layered materials offers unique opportunities for controlling chemical reactions in confined spaces and developing nanocomposites with desired functionality. In this study, the exploitation of the novel and ...

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Effective solar-based iron oxide supported HY zeolite catalyst for decolorization of organic and simulated dyes

17-Jun-2015 | Norzahir Sapawe, New Journal of Chemistry, 2015

Highly dispersed of electrogenerated nanoparticles iron oxide onto HY zeolite (EGFe2O3/HY) was prepared by a facile electrochemical method, and has been characterized using XRD, TEM, BET, and UV–vis/DRS. The formation of EGFe2O3 ...

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Stable Synthetic Bacteriochlorins: Potent Light-Activated Anti-Cancer Drugs

17-Jun-2015 | Huang, Ying-Ying; Luo, Dianzhong; R. Hamblin, Michael, Organic Chemistry, 2015

Abstract: Photodynamic therapy (PDT) uses non-toxic dyes called photosensitizers (PS) to absorb light of visible or near-infrared wavelengths at non-thermal power densities that (in the presence of oxygen) combine together to produce reactive oxygen species (ROS). The main ROS formed are ...

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Tropolone as a High‐Performance Robust Anchoring Group for Dye‐Sensitized Solar Cells

16-Jun-2015 | Tomohiro Higashino, Yamato Fujimori, Kenichi Sugiura, Yukihiro Tsuji, Seigo Ito, Hiroshi Imahori, Angewandte Chemie International Edition, 2015

Abstract A tropolone group has been employed for the first time as an anchoring group for dye‐sensitized solar cells (DSSCs). The DSSC based on a porphyrin, YD2‐o‐C8T, with a tropolone moiety exhibited a power‐conversion efficiency of 7.7 %, which is only slightly lower than that observed for ...

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