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We describe herein the construction of a glucose biosensor system that senses glucose without the use of potentiostat and harness usable electrical energy from glucose to power a digital electronic device simultaneously. This system is powered by a single enzymatic glucose biofuel cell comprising a highly dense mesh network of multi-walled carbon nanotubes and enzymes that results in the immobilization...
ZnO nanowires have potential applications as large area field emitters for plat panel x-ray source and high emission current is needed for such application. In this study, patterned ZnO nanowires with different separations have been fabricated on ITO coated glass substrate by thermal oxidation technique. It is found that the separation of the patterns affects the growth of ZnO nanowires. The field...
The protection from corrosion of buried Pipelines used to transport gas and oil is always ensured by an insulation coating and secondly by a cathodic protection (CP), the latter reduces the corrosion and avoids eventual damage. But when pipelines are near a high voltage power lines, an alternating current (AC) is induced, thus causes the perturbation of the protection, and then serious damage by corrosion...
Thin-film transistors based on anodized indium-tin-oxide (ITO) active layer and anodic tantalum oxide (Ta2O5) gate dielectric were investigated. The electrical and optical properties of ITO film can be affected by an anodization treatment. The anodized ITO TFT shows an on/off current ratio of 108, a saturation mobility of 28.8 cm2V−1s−1, a subthreshold swing of 0.51 V/dec, and a threshold voltage...
In this paper, we report our recently developed large area 4H-SiC n-IGBTs that have a chip size of 1 cm2 and an active conducting area of 0.37 cm2. A blocking voltage of 22.6 kV has been demonstrated with a leakage current of 9 μA at a gate bias of 0 V at room-temperature. This is the highest breakdown voltage of a single MOS-controlled semiconductor switch reported to date. To improve the conductivity...
The TiO2 film was produced on the pure Ti plate substrate in the electrolyte solution of Na3PO4 by micro-arc oxidation (MAO) process. The effect of electrolyte concentration, oxidation time and current density on structure, chemical composition of the TiO2 film had been investigated. It was found that the TiO2 film was consisted of anatase and the rutile phases. H2 production activity was examined...
Titanium oxide coatings (TiO2/Ti) were formed on the titanium net surface by micro-arc oxidation(MAO) in Na3PO4 solution using an AC power supply. Using the TiO2/Ti photoelectrode as anod electrode, the Ti plat as counter electrod the same size with the TiO2, and with the UV lamp, constant current meter make up the photoelectrocatalytic reactor was built. The project was focused on the investigation...
There is considerable recent interest in forming nano-materials with enhanced or unique properties and there has already been a great deal of interest in applying nanotechnology to improve fuel cell performance. Researchers have shown that the power output of fuel cells can be enhanced by using carbon nanotubes as catalyst supports. This paper aims to combine the advantages high resolution lithography...
A new method for Nitrate-N removal in water has been presented in this paper, and related experiments have been carried out to study its technical characteristics. Results showed that in designed electrolysis system, Fe modified Ti substrate cathode can catalytic reduce NO3--N to NH4+-N under suitable conditions. Furthermore NH4+-N can be oxidized to N2-N in same system by supporting of Cl-. Under...
Summary form only given. Commercial expandable graphite was heat at 900 °C to get the worm-like graphene nanosheets. Using sulfuric acid and potassium permanganate to oxidize the expanded graphene nanosheet could further minish the thickness of graphene oxide sheet to less than 1nm, and this way to get the graphene was proved to be mass producible (tens of gram). Free-standing graphene oxide paper...
This study aimed to investigate the corrosion resistance in 3.5%NaCl solution and high temperature oxidation behavior of Pb-5Sn solder and its alternatives under development, Bi-11Ag and Zn-40Sn. Compared with Pb-5Sn and Zn-40Sn, Bi-11Ag exhibited higher corrosion potential and relatively low corrosion current density. The ductile Ag-rich phase which dispersed in the Bi matrix was able to accommodate...
The electrochemical oxidation of atrazine on Ti/SnO2-Sb2O5/PbO2 electrode was studied by cyclic voltammetry in this paper. The electrochemical behaviour of the electrode in sodium sulfate solution and in the mixture solution of sodium sulfate and atrazine has been studied. The experimental results of cyclic voltammetry showed that acidic media was suitable for efficient electrochemical oxidation of...
Different metal (Bi, Ni, La, Ce and Er) doped PbO2 electrodes were successfully prepared by electro-deposition method, and their electrocatalytic degradation capacity for 2, 4-dichlorphenol (2, 4-DCP) in water was compared in a batch experiment. The electrodes were characterized by scanning electron microscope (SEM). The morphology and component analysis showed that metal (Bi, Ni, La, Ce and Er) was...
This paper suggests a technological process to oxidize stench sulfide wastewater containing dodecyl mercaptan with electrolyzing NaOH in the presence of active carbon. Preliminary experiments were conducted and good results were obtained. Under the condition that electrolyzing 1% NaOH with 3A current and the reaction temperature remains 20°C and the reaction time lasts 10~30 s, the stench dodecyl...
SnCl4-5H2O, Sb2O3, and Gd(NO3)3 were used as the precursors to prepare the film of rare earth Gd doping SnO2/Sb coating anode by coprecipitation method. The phenolic wasterwater was treated by the Gd doping SnO2/Sb coating anode. The factors affecting the degradation rate of phenol were examined, such as the electrolyte concentration, current density, solution pH , solution temperature and doping...
Azo dyes brilliant red X-3B wastewater simulated were treated by process containing bio-electrochemical hydrolysis-acidification reactor(BEH) and biological contact oxidation process (BCO), and by process containing biological hydrolysis-acidification reactor(BH) and zeolite MBR. The performance of aforementioned two processes was compared. The result indicated that the treatment effect by BEH for...
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