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- Polymer Science (38)
- Otto Vogl (24)
- 02. My Life with Polymer Science (22)
- Memoirs (22)
- Photographs (20)
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- 03. The History of the Pacific Polymer Federation (16)
- Pacific Polymer Federation (16)
- 07. Selected Conferences on Polymer Science (2)
- History of Polymer Science (2)
- Polymer Science Conferences (2)
- 'Soft chemical' method (1)
- (S)-3-Phenylpropane-2-tert-butoxycarbonylamino-1-thiol (1)
- ) α-Fe_2O_(3)-TiO_2 (1)
- AC electrodeposition (1)
- Actinide elements (1)
- Air electrode (1)
- Americium (1)
- Asymmetric synthesis (1)
- Axial elongation (1)
- Biochemical Engineering, Chemical Physics, Biophysics (1)
- Carbon nanotube (1)
- Cation dopant (1)
- CeO_(2) Co-repressing (1)
- Co-sintering (1)
- Commercial catalyst (1)
- Current yield (1)
- Cyclicvoltammetry (1)
- Direct methanol fuel cells(DMFCs) (1)
- Discrete ordinates method (1)
- EIS (1)
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Articles 1 - 30 of 70
Full-Text Articles in Chemical Engineering
My Life With Polymer Science: Scientific And Personal Memoirs, Otto Vogl
My Life With Polymer Science: Scientific And Personal Memoirs, Otto Vogl
Emeritus Faculty Author Gallery
My "life story" will begin with my formative years, my childhood and student days at the University of Vienna, including my dissertation. It will be followed by my teaching appointment as an Instructor at the II. Chemical Institute of the University of Vienna. The urge to see other lands, learn other languages and scientific methods led to the Wandering Years that brought me to the United States. After three years spent as a Research Associate at the University of Michigan and at Princeton University I spent more than 13 years in an industrial career at the Du Pont Company in …
My Life With Polymer Science: Scientific And Personal Memoirs, Otto Vogl
My Life With Polymer Science: Scientific And Personal Memoirs, Otto Vogl
Otto Vogl
My "life story" will begin with my formative years, my childhood and student days at the University of Vienna, including my dissertation. It will be followed by my teaching appointment as an Instructor at the II. Chemical Institute of the University of Vienna. The urge to see other lands, learn other languages and scientific methods led to the Wandering Years that brought me to the United States. After three years spent as a Research Associate at the University of Michigan and at Princeton University I spent more than 13 years in an industrial career at the Du Pont Company in …
Electrochemical Behaviours Of Hemoglobin-Ddab-Modified Powder Microelectrode And The Application Of The Powder Microelectrode In Determination Of Nitric Oxide, Zhi-Mou Guo, Huan Liu, Jian Chen, Wen-Ting Zhang
Electrochemical Behaviours Of Hemoglobin-Ddab-Modified Powder Microelectrode And The Application Of The Powder Microelectrode In Determination Of Nitric Oxide, Zhi-Mou Guo, Huan Liu, Jian Chen, Wen-Ting Zhang
Journal of Electrochemistry
The electrochemical behaviours of DDAB-Hb-PME were studied in this paper. The (apparent) surface concentration of Hb was enhanced greatly by using the powder microelectrode (technique). NO reacts with Hb and absorbs on the surface of the modified carbon powder. Therefore, the output of the electrode was enhanced greatly by employing PME with higher reaction surface (area). The sensitivity of DDAB-Hb-PME is 3.1 mA/μmol·L~(-1)·cm~(2), which is much larger than the values obtained with the traditional electrodes. The detection limit is 9 nmol·L~(-1) and the linear response range is 9～100 nmol·L~(-1).
Electrocatalytic Performances Of Carbon Nanotube Air Electrode For Oxygen Reduction, Feng-Ming Zhao, Chun-An Ma
Electrocatalytic Performances Of Carbon Nanotube Air Electrode For Oxygen Reduction, Feng-Ming Zhao, Chun-An Ma
Journal of Electrochemistry
The air electrodes with different mass ratio of Pt/active carbon or carbon nanotube as catalyst layer material have been prepared. The electrocatalytic performances for oxygen reduction were evaluated by means of polarization curve and electrochemical impedance spectroscopy (EIS). The results disclosed that carbon nanotubes dealt with nitric acid in the catalyst layer had been improved obviously on the electrocatalytic activity. After the surface of carbon nanotube was oxygenated and aggraded with platinum, the catalyst had obviously effects on the electrocatalytic activity. The air electrode with the mass ratio of active carbon to Pt/carbon nanotube in 4∶1 showed better electrocatalytic activity, …
Anodic Dissolution Of Aluminum In Koh-Ethanol Solutions, Hai-Bo Shao, Jian-Ming Wang, Xiao-Yan Wang, Yi Zheng, Jian-Qing Zhang
Anodic Dissolution Of Aluminum In Koh-Ethanol Solutions, Hai-Bo Shao, Jian-Ming Wang, Xiao-Yan Wang, Yi Zheng, Jian-Qing Zhang
Journal of Electrochemistry
The feasibility of employing aluminum in KOH ethanol solution as a battery anode system was discussed. Weight loss measurement showed that the corrosion rate of Al is low enough to be used in sealed batteries. Through the measurements done by anodic polarization, EIS and galvanostatic discharge, it was found that A1 is electrochemical active in a wide potential range in this system, and its discharge mechanism is similar to that of A1 in aqueous solution. The discharge potential increased rapidly after a period of time, which might be caused by the discharge products depositing on the electrode surface.
Preparation And Photo-Catalyst Properties Of The Α-Fe_2o_3-Tio_2 Films On Sodium Alginate Polymer, Li-Qin Chen, Huai-Zhen Zhong, Ri-Yao Chen, Xi Zheng, Zhen Chen
Preparation And Photo-Catalyst Properties Of The Α-Fe_2o_3-Tio_2 Films On Sodium Alginate Polymer, Li-Qin Chen, Huai-Zhen Zhong, Ri-Yao Chen, Xi Zheng, Zhen Chen
Journal of Electrochemistry
Three new nano thin films of α-Fe_2O_(3)、TiO_2 and α-Fe_2O_(3)-TiO_2 by doping their powder with sodium alginate polymer were prepared. Surface structure and catalytic activities of the films were characterized by FTIR、XRD、PL、TEM and I-V techniques. The results of UV-visible absorption showed that the methylene blue was mineralized in aqueous of α-Fe_2O_(3)/SA、TiO_2/SA and (α-(Fe_2O_(3)))-TiO_2 /SA upon radiation with ultra violet light. α-Fe_2O_(3) enhanced their photo-decolorized-activities by doping 15% TiO_2.
Effect Of Fe~(3+) Dopen Of Titanium Dioxide Film On Absorption Spectra And Photo Catalysis, Mei-Qun Xiao, Jia-Nian Shen, Moucheng Li, Peng-Fei Wu, Dong Liu, Yu-Juan Zhang
Effect Of Fe~(3+) Dopen Of Titanium Dioxide Film On Absorption Spectra And Photo Catalysis, Mei-Qun Xiao, Jia-Nian Shen, Moucheng Li, Peng-Fei Wu, Dong Liu, Yu-Juan Zhang
Journal of Electrochemistry
Photo-catalytic titanium dioxide film in nano crystalline has been prepared by electrochemical oxidation process and adding different amount of ferric ion into the electrolyte during the anodic oxidation.The effects of Fe~(3+) dopen on absorption spectra and photo-catalytic of the titanium dioxide films have been studied. It shows that the Fe~(3+) dopen caused the red shife of the absorption edge for the incoming light and exhibited the improved photocatalytic reactivity.
Pictures From My Life With Polymer Science: Album 1, Otto Vogl
Pictures From My Life With Polymer Science: Album 1, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Surface Structure Of Alkylsilylated Hzsm-5 As Phase-Boundary Catalyst, Hadi Nur, Yun Hau Ng, Mohd Nazlan Mohd Muhid, Halimaton Hamdan
Surface Structure Of Alkylsilylated Hzsm-5 As Phase-Boundary Catalyst, Hadi Nur, Yun Hau Ng, Mohd Nazlan Mohd Muhid, Halimaton Hamdan
Yun Hau Ng
The need for cleaner environment concerns motivates the development of more efficient catalytic system. Based on this consideration, recently a novel catalyst named "Phase-boundary catalyst", a bimodal amphiphilic solid catalyst, was proposed. It was demonstrated that the catalytic system containing phase-boundary catalyst required neither stirring to make an emulsion nor addition of a co-solvent to make a homogeneous solution to drive the reaction. The driving force that has prompted this paper is to investigate the surface structure of alkylsilylated HZSM-5 as phase-boundary catalyst. Temperature Programmed Desorption (TPD) of ammonia and, 13C and 29Si MAS NMR spectroscopy were used to elucidate …
Pictures From My Life With Polymer Science: Album 01, Otto Vogl
Pictures From My Life With Polymer Science: Album 01, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 2, Otto Vogl
Pictures From My Life With Polymer Science: Album 2, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Pictures From My Life With Polymer Science: Album 02, Otto Vogl
Pictures From My Life With Polymer Science: Album 02, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 3, Otto Vogl
Pictures From My Life With Polymer Science: Album 3, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Pictures From My Life With Polymer Science: Album 03, Otto Vogl
Pictures From My Life With Polymer Science: Album 03, Otto Vogl
Otto Vogl
No abstract provided.
Synthesis And Electrochemical Behavior Of Layered-Structure Limn_(1-X)Cr_Xo_2, Jie Xiao, Hui Zhan, Yun-Hong Zhou
Synthesis And Electrochemical Behavior Of Layered-Structure Limn_(1-X)Cr_Xo_2, Jie Xiao, Hui Zhan, Yun-Hong Zhou
Journal of Electrochemistry
The Layered-structure LiMn_(1-x)Cr_xO_(2 )(x=0,0.15) solid solution has been prepared by the rheological phase method. From the XRD results, undoped LiMnO_(2) crystallized almost entirely in the orthorhombic phase while the structure of LiMn_(0.85)Cr_(0.15)O_(2) belongs to monoclinic phase. TEM investigation shows that the final powder product consists of ultrafine spherical particles which are distributed homogeneously, with the average diameter ranging from 60 to 300nm. The initial discharge capacity of LiMn_(0.85)Cr_(0.15)O_(2) is much higher than that of undoped LiMnO_(2). After 40 cycles, the capacity retention for m-LiMn_(0.85)Cr_(0.15)O_(2 )is 94% at the current rate of 50mA/g under room temperature. The results of electrochemistry tests …
Lithium Insertion Into Tio_2(B) Nanobelts Synthesized By The "Soft Chemical" Method, Cha-Geng Nie, Zheng-Liang Gong, Lan Sun, Juan Zuo, Yue-Kun Lai, Chang-Jian Lin
Lithium Insertion Into Tio_2(B) Nanobelts Synthesized By The "Soft Chemical" Method, Cha-Geng Nie, Zheng-Liang Gong, Lan Sun, Juan Zuo, Yue-Kun Lai, Chang-Jian Lin
Journal of Electrochemistry
TiO_(2)(B) Nanobelts were synthesized by using the "Soft chemical"method. The products were characterized by means of transmission electron microscope(TEM), X-ray diffraction(XRD), Raman spectrum and energy dispersive spectrum(EDS). Galvanostatic charging and discharging tests showed that lithium-ion intercalation/deintercalation occurred reversibly in the TiO_(2)(B) nanobelts electrode, and a high capacity (265 mAh·g~(-1)) can be obtained. The results suggested that TiO_(2)(B) Nanobelts might be a promising negative electrode material of second Lithium battery.
Study On An Intermediate Temperature Planar Solid Oxide Fuel Cell, Shao-Rong Wang, Wen-Xia Chen, Ting-Lian Wen, Jia-Di Cao, Zhi-Yi Lv, Da-Qian Wang
Study On An Intermediate Temperature Planar Solid Oxide Fuel Cell, Shao-Rong Wang, Wen-Xia Chen, Ting-Lian Wen, Jia-Di Cao, Zhi-Yi Lv, Da-Qian Wang
Journal of Electrochemistry
Tape cast method was applied to prepare green sheets of Ni/YSZ anode supported YSZ thin film. After isostatic pressure treatment and cosintering, the YSZ film on the Ni/YSZ anode was gas-tight dense, and 15~30 μm thick. The area of the composite film was over 100 cm~(2). A Ce_(0.8)Sm_(0.2)O_(1.9 )(CSO) interlayer was sintered on to the YSZ electrolyte film to protect La_(0.6)Sr_(0.4)CoO_(3 )(LSCO) cathode from reaction with YSZ at high temperatures. The LSCO cathode layer was screen printed onto the CSO interlayer and sintered at 1 200 ℃ for 3h to form a single cell. The obtained single cell was operated …
Fabrication Of Solid Oxide Fuel Cells And Analysis Of Their Structure And Performance, Nai-Tao Yang
Fabrication Of Solid Oxide Fuel Cells And Analysis Of Their Structure And Performance, Nai-Tao Yang
Journal of Electrochemistry
An intermediate temperature solid oxide fuel cell (IT-SOFC) was fabricated by co-copressing-sintering methods, and the electrolyte of Ce_(0.8)Gd_(0.2)O_(1.9) (CGO) and cathode materials of La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3-α) (LSCF) were prepared by sol-gel method. The effect of preparation methods on the microstructure of the prepared fuel cells was analyzed by SEM . It shows that the cells prepared by the co-pressing/co-sintering method possess a dense electrolyte layer and a compact interface between electrolyte and anode but a curved configuration, while those prepared by the colloidal technique have a flat configuration but the electrolyte layer is not dense enough. The maximum output power density of …
Electrochemical Reduction Of Nitrobenzene On The Wc Electrode In Acidic Solution, Chun-An Ma
Electrochemical Reduction Of Nitrobenzene On The Wc Electrode In Acidic Solution, Chun-An Ma
Journal of Electrochemistry
The tungsten carbide (WC) electrode was constructed by using polyterafluoroethylene as binder. The electrochemical behavior of nitrobenzene on the WC electrode in acidic solution was investigated by cyclic voltammetry, linear scan method and chronoamperometry. Experimental results showed that WC electrode had good activity for the electrochemical reduction of nitrobenzene, and the electrode process was controlled by diffusion and electrochemical stepssimultaneously. The apparent active energy of the electrode process is 23.7kJ mol~(-1), while the active energy of the electrochemicalstep is 10.91kJ mol~(-1).
Synthesis Of (S)-3-Phenylpropane-2-Tert-Butoxycarbonylamino- 1-Thiol And Its Electrochemical Behavior Self-Assembled On Gold, Sun Ru
Journal of Electrochemistry
The synthesis of (S)-3-Phenylpropane-2-tert-butoxycarbonylamino- 1-thiol(N-Boc-APT) from L-phenylalanine was reported. L-Phenylalanine was reduced to the corresponding amino alcohol, protection of the amino group using tert-butyl pyrocarbonate gave (S)-2-tert-butoxycarbonylamino-3-phenylpropane-1-ol, which was then O-mesylated and treated with potassium thioacetate in DMF to give 3-phenylpropane-2-tert- butoxycarbonylamino-1-etylmercapto. After the acetyl group was removed with ammonia in alcohol, the desired target molecular was obtained. The structure of intermediate and target molecular was conformed by IR and ~(1)HNMR. We made N-Boc-APT self-assemble-modificated gold electrode and investigated its electrochemical behavior. The CV results of methylene blue on nano-Au/N-Boc-APT SAM/Au electrode showed that nano-Au could speed this electron transfer …
Solid State Synthesis And Electrocatalysis Of Pt/Moo_3 For The Oxidation Of Methanol, Wang Qing
Solid State Synthesis And Electrocatalysis Of Pt/Moo_3 For The Oxidation Of Methanol, Wang Qing
Journal of Electrochemistry
The electrocatalyst, Pt/MoO_(3) synthesized by solid state reaction, was used for the oxidation of methanol in direct methanol fuel cells. The X-Ray diffraction and cyclic voltammetry were employed to investigate the performance of the material. It was shown that the typical diffraction peaks for Pt appeared in XRD. And a good electrocatalysis for methanol oxidation was observed. The peak potential of the methanol oxidation appeared at ca. 0.63V(vs.SCE) and the peak current density for the oxidation was 78.1 mA cm~(-2) .
Preliminary Study Of Speek Membranes For Direct Methanol Fuel Cells Application, Su-Zhen Ren
Preliminary Study Of Speek Membranes For Direct Methanol Fuel Cells Application, Su-Zhen Ren
Journal of Electrochemistry
This paper describes the methanol permeability characterization of SPEEK membranes and their feasibility for DMFC application. The SPEEK membranes showed a significant lower methanol permeation than Nafion~115 determined from voltammetric methods. An increase in open circuit voltage was found in the performance of SPEEK membranes in DMFC. The power density of the cell using SPEEK membrane was considerably poorer than that of Nafion~115. If modified properly, the SPEEK membranes can be chosen for DMFC application based on this study.
Pictures From My Life With Polymer Science: Album 4, Otto Vogl
Pictures From My Life With Polymer Science: Album 4, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Pictures From My Life With Polymer Science: Album 04, Otto Vogl
Pictures From My Life With Polymer Science: Album 04, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 5, Otto Vogl
Pictures From My Life With Polymer Science: Album 5, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Pictures From My Life With Polymer Science: Album 05, Otto Vogl
Pictures From My Life With Polymer Science: Album 05, Otto Vogl
Otto Vogl
No abstract provided.
Hydrazine/Nitrogen Dioxide Fiber Optic Sensor, Alfred S. Andrawis, Josephine B. Santiago, Rebecca Young, Clayton J. Baum
Hydrazine/Nitrogen Dioxide Fiber Optic Sensor, Alfred S. Andrawis, Josephine B. Santiago, Rebecca Young, Clayton J. Baum
Chemistry and Chemical Engineering Faculty Publications
This paper outlines the development of a dual hydrazine/nitrogen dioxide (HZ/NO2) prototype fiber optic sensor utilizing an acid-base indicator that undergoes color changes depending on which gas is present. Bromothymol blue bromocresol green mixture (1/1) in hydrogel (1/1), produces a blue-green indicator for HZ and/or NO2. The sensor was tested several times over a period of eight weeks and the response was consistent and proved the feasibility of dual HZ/NO2 leak detection. Prototype sensor construction, the hardware, and the software of the electronic interrogator circuitry are briefly explained. The paper presents a summary of sensor response when exposed to 52 …
Pictures From My Life With Polymer Science: Album 6, Otto Vogl
Pictures From My Life With Polymer Science: Album 6, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Pictures From My Life With Polymer Science: Album 06, Otto Vogl
Pictures From My Life With Polymer Science: Album 06, Otto Vogl
Otto Vogl
No abstract provided.
Investigation Of Adsorption And Oxidation Behavior Of Isosafrole On A Smooth Pt, Xiao-Hong Zhang
Investigation Of Adsorption And Oxidation Behavior Of Isosafrole On A Smooth Pt, Xiao-Hong Zhang
Journal of Electrochemistry
The electro-oxidation of isosafrole on a smooth platinum electrode was investigated in the non-aqueous solution. The CV curve shows two oxidation peaks and one reduction peak in the potential region between -0.5 V and 1.95 V. The relation between the oxidation and reduction peaks has been determined also by CV. The adsorption behavior of isosafrole on Pt was also investigated.