Results 171 to 180 of about 20,918,698 (229)
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, 2020
Traditional positive electrode materials consisting of transition metal oxides, sulfides, hydroxides, and conductive polymers exhibit ultra-high capacitances for asymmetric supercapacitors. However, negative electrode materials are rather poor.
Chao Huangfu +7 more
semanticscholar +1 more source
Traditional positive electrode materials consisting of transition metal oxides, sulfides, hydroxides, and conductive polymers exhibit ultra-high capacitances for asymmetric supercapacitors. However, negative electrode materials are rather poor.
Chao Huangfu +7 more
semanticscholar +1 more source
Chemical Communications, 2019
In this study we synthesized two tetraphenyl-p-phenylenediamine-based covalent organic frameworks (TPPDA-TPPyr and TPPDA-TPTPE COFs) for potential use in high-performance electrochemical supercapacitors.
A. EL-Mahdy +5 more
semanticscholar +1 more source
In this study we synthesized two tetraphenyl-p-phenylenediamine-based covalent organic frameworks (TPPDA-TPPyr and TPPDA-TPTPE COFs) for potential use in high-performance electrochemical supercapacitors.
A. EL-Mahdy +5 more
semanticscholar +1 more source
Analytica Chimica Acta, 2020
A novel method was developed for the sensitive and visual detection of p-phenylenediamine (PPD) via immobilizing the target specie PPD on dialdehyde cellulose membrane (DCM) followed by the reaction with salicylaldehyde.
Shengli Zhang +5 more
semanticscholar +1 more source
A novel method was developed for the sensitive and visual detection of p-phenylenediamine (PPD) via immobilizing the target specie PPD on dialdehyde cellulose membrane (DCM) followed by the reaction with salicylaldehyde.
Shengli Zhang +5 more
semanticscholar +1 more source
Hybrid supercapacitors based on metal organic frameworks using p-phenylenediamine building block
Chemical Engineering Journal, 2019Hybrid supercapacitors using metal–organic frameworks (MOFs) exhibit high power and remarkable rate capability with consistent cyclability. The key limitations in developing MOF supercapacitors are the limited number of ligands and extensive laboratory ...
Yasun Y. Kannangara +2 more
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, 2020
In order to reduce the agglomeration of graphene and improve its supercapacitor performance, graphene oxide was functionalized with p-phenylenediamine, and PANI/PPD-RGO nanocomposites were prepared with aniline monomer by in-situ polymerization.
Tingsheng Wang +5 more
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In order to reduce the agglomeration of graphene and improve its supercapacitor performance, graphene oxide was functionalized with p-phenylenediamine, and PANI/PPD-RGO nanocomposites were prepared with aniline monomer by in-situ polymerization.
Tingsheng Wang +5 more
semanticscholar +1 more source
Poly(p-phenylenediamine)/maghemite composite as highly effective adsorbent for anionic dye removal
, 2020Poly(p-phenylenediamine)/maghemite (PPDA/γ-Fe2O3) composites were prepared by the oxidative polymerization of p-phenylenediamine with ammonium peroxodisulfate as an oxidizing agent in the presence of γ-Fe2O3 nanoparticles.
Islam M. Minisy +6 more
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Chemical Physics Letters, 1977
Abstract Resonance Raman spectra have been observed for the dimers of p -phenylenediamine cation (PPD + ) and of 2,3,5,6-tetramethyl- p -phenylenediamine cation (TMPD + ). When the exciting light frequency approached the absorption bands characteristic of the dimers, new polarized Raman lines appeared at 161 cm −1 for (PPD + ) 2 and at 117 cm −1 ...
K. Yokoyama, S. Maeda
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Abstract Resonance Raman spectra have been observed for the dimers of p -phenylenediamine cation (PPD + ) and of 2,3,5,6-tetramethyl- p -phenylenediamine cation (TMPD + ). When the exciting light frequency approached the absorption bands characteristic of the dimers, new polarized Raman lines appeared at 161 cm −1 for (PPD + ) 2 and at 117 cm −1 ...
K. Yokoyama, S. Maeda
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Interaction of dimethyl-p-phenylenediamine with ceruloplasmin
Archives of Biochemistry and Biophysics, 1967The stoichiometric interaction of dimethyl-p-phenylenediamine (DPD) with ceruloplasmin-Cu2+ has been investigated by spectrophotometric and electron paramagnetic resonance technique. Intermediates in the reaction sequence, DPD → (DPD)+ → (DPD)2+ → further oxidation products, were characterized.
E, Walaas, R A, Lovstad, O, Walaas
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J. Chem. Soc., Perkin Trans. 1, 1978
Mild nitration of NN′-bis(phenylsulphonyl)-p-phenylenediamine affords a mixture of the 2,3-, 2,5-, and 2,6-dinitro derivatives, which after separation and hydrolysis give the corresponding dinitro-p-phenylenediamines. Structural assignmetns are made on the basis of 1H n.m.r. and chemical evidence.
Kwong-Yung Chu, John Griffiths
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Mild nitration of NN′-bis(phenylsulphonyl)-p-phenylenediamine affords a mixture of the 2,3-, 2,5-, and 2,6-dinitro derivatives, which after separation and hydrolysis give the corresponding dinitro-p-phenylenediamines. Structural assignmetns are made on the basis of 1H n.m.r. and chemical evidence.
Kwong-Yung Chu, John Griffiths
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A highly sensitive perovskite oxide sensor for detection of p-phenylenediamine in hair dyes.
Journal of Hazardous Materials, 2019Effective regulation of p-phenylenediamine (PPD), a widely used precursor of hair dye that is harmful to human health in large concentration, relies upon an accurate yet simple detection of PPD.
Juan He +7 more
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