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Frontiers of Optoelectronics 2011年第1期4卷 53-58页

作者： Jianwei LIU Jun LI Department of Physics and Astronomy University of Kansas Department of Chemistry Kansas State University

An electrochemical method has been developed to analyze dye absorption on the aligned carbon nanofiber arrays coated with TiO2nanoneedles for dyesensitized solar cell. The unique nanostructure with the roughness factor of 90.6 provides a large effective surface area for dye adsorption. The experimental results showed that the dye molecules cover 39.7% of the TiO2surface area which influences the performance of dye-sensitized solar cell. The electrochemical method provides the information of the coverage of dye molecules which is a key issue to optimize solar cell performance.

关键词： electrochemical analysis aligned carbon nanofibers dye adsorption solar cell

Fuel Cell Research Based on electrochemical analysis

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Journal of Electronic Research and Application 2020年第3期4卷 16-19页

作者： Bohong Huang Shenzhen Senior High School ShenzhenGuangdong PrivinceChina

With the development of social economy and the improvement of people’s living level,the global energy demand is rising *** reserves of traditional fossil energy such as coal,oil and natural gas are limited,and its depletion is *** the massive use of fossil energy will also bring a series of environmental problems such as greenhouse ***,it is urgent to find a clean and renewable *** cell(FC)is a new energy technology that has attracted much *** is a power generation system that converts the chemical energy of fossil fuel(coal,oil,natural gas,etc.),biomass fuel or other hydrocarbon fuel(ethanol,propane,butane,etc.)into electrical energy directly without combustion through electrochemical *** the process of fuel cell operation,fuel and air react in different chambers respectively,breaking away from the restriction of Carnot *** this way,the utilization rate of fuel has been greatly ***,the fuel cell will only produce H2O,CO2 and other products in the working process,and will not produce dust or other harmful ***,the research and development of efficient and clean new energy technology is of great significance to promote the rational use of coal resources and biomass fuel and coordinate the harmonious development of environment and economy.

关键词： electrochemical analysis Clean energy Fuel cell

Almond gum assisted synthesis of Mg doped Fe_(2)O_(3) NPs:Structural analysis,electrochemical sensing,and optical applications

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ChemPhysMater 2022年第4期1卷 330-337页

作者： Madanakumara Hanumanthappa Jayanna Halepoojar Siddalingappa Yellamagad Channabasaveshwara Soundeswaran Sundararajan Mruthyunjaya Vishwas Shyamala Kurki Srinivasaiah Surendra Boppanahalli Siddegowda Basavaraju Nandeesh Department of Physics Dr Ambedkar Institute of TechnologyBangalore 560056India Department of Physics Kuvempu UniversityShankaraghatta Shimoga 577451India Yellamagad Channabasaveshwara c Soundeswaran Sundararajan Mruthyunjaya Vishwas e Shyamala Kurki Srinivasaiah fSurendra Boppanahalli Siddegowda School of Physics and Geology Nrupathunga UniversityBangalore 560001India Department of Physics Mount Carmel CollegeBangalore 560001India Department of Chemistry Dayananda Sagar College of EngineeringBengaluru 560078India Department of Physics East West Institute of TechnologyBangalore 560091India

Mg-doped Fe_(2)O_(3)nanoparticles(M-FNPs)are successfully prepared first time by facile green-aided(almond gum)combustion *** structural analysis of synthesized nanoparticles was well analyzed by Powder X-ray Diffrac-tion(PXRD),Fourier Transform Infrared spectroscopy(FT-IR),Scanning Electron Microscope(SEM),Raman spec-troscopy and UV-Visible spectral *** showed a nanocrystalline nature and determined the average particle size to be 85 *** surface morphologies of the prepared nanocomposite was measured by SEM tech-nique reveals the porous and spongy like *** photodegradation activity on 20×10^(−6)of Fast Orange Red(FOR)organic model dye using M-FNPs(50 mg)under UV light irradiation was investigatedin ***-trochemical examination of the prepared material was conducted using graphite-M-FNP electrode paste in 0.1 M KCl solution,and its performance in redox reaction was determined to be very good via cyclic voltammetry and electrochemical impedance ***,an extension to sensor studies revealed broad differences in redox positions for paracetamol sensors,at 0.64 V and 0.41 V,confirming highly chemical sensor activity in alkaline medium for 1∼5 mM concentrations.

关键词： Mg doped Fe_(2)O_(3)photocatalyst Green combustion electrochemical analysis Photocatalysis

Inhibitory Effect of Vibrio neocaledinocus sp. and Pseudoalteromonas piscicida Dual-Species Biofilms on the Corrosion of Carbon Steel

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Acta Metallurgica Sinica(English Letters) 2022年第4期35卷 551-562页

作者： Masoumeh Moradi Jianlin Li Wenhui Liu Dake Xu Fuhui Wang Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang 110819China Key Laboratory for Anisotrotropy and Texture of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang 110819China

Multi-species biofilms are found in various bacterial habitats and have industrial relevance. These complex bacterial communities have synergetic effects, unlike a single species. Therefore, it is critical to evaluate these complex communities as a whole. Here, the inhibitory eff ect of single-and dual-species biofilms of Vibrio neocaledinocus sp. and Pseudoalteromonas piscicida for A36 carbon steel corrosion was investigated. The results demonstrated that the synergistic interactions of the monoculture increased the overall biomass production of the dual-species biofilm, but the growth rate was reduced in the presence of the dual-species culture due to a lack of nutrients. Field emission scanning electron microscopy images also confirmed the development of biofilms—they became more homogenized via exposure time in both the mono-and dual-species cultures. The corrosion resistance of A36 carbon steel positively increased because of the dual-species interactions. This reached the highest value after four weeks of exposure. The highest corrosion inhibition e fficiency of 99.8% was achieved in the dual-species cultures. Microbial community analysis revealed the high relative abundance of Pseudoalteromonas piscicida during the initial days of exposure, demonstrating the dominant role of this bacterium in the biofilm structure.

关键词： Dual-species biofilm Steel alloys Corrosion inhibitory electrochemical analysis Cooperative interaction

A simple and sensitive method for the determination of 4-n-octylphenol based on multi-walled carbon nanotubes modified glassy carbon electrode

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Journal of Environmental Sciences 2012年第9期24卷 1717-1722页

作者： Qiaoli Zheng Ping Yang He Xu Jianshe Liu Litong Jin School of Environmental Science and Engineering Donghua University Shanghai 201620 China Department of Chemistry East China Normal University Shanghai 200062 China

A simple and sensitive electroanalytical method was presented for the determination of 4-n-octylphenol （OP） based on multi-walled carbon nanotubes （MWCNTs） modified glassy carbon electrode （GCE）. OP was directly oxidized on the MWCNTs/GCE, and the electrochemical oxidation mechanism was demonstrated by a one-electron and one-proton process in the reaction. The oxidation peak current of OP was significantly enhanced by the use of MWCNTs/GCE compared with those of bare glassy carbon electrode, suggesting that the modified electrode can remarkably improve the performance for OP determination. Factors influencing the detection processes were optimized. Under these optimal conditions, a linear relationship between concentration of OP and current response was obtained in the range of 5 × 10-8 to 1× 10-5 mol/L with a detection limit of 1.5 × 10-8 mol/L and correlation coefficient 0.9986. The modified electrode showed good selectivity, sensitivity, reproducibility and high stability.

关键词： multi-walled carbon nanotubes 4-n-octylphenol electrochemical analysis linear sweep voltammetry

Emerging wearable flexible sensors for sweat analysis

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Bio-Design and Manufacturing 2022年第1期5卷 64-84页

作者： Wenzheng Heng Geng Yang Woo SooKim Kaichen Xu State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China Andrew and Peggy Cherng Department of Medical Engineering California Institute of TechnologyPasadenaCA 91125USA School of Mechatronic Systems Engineering Simon Fraser UniversitySurreyBC V3T 0A3Canada

Sweat,as a biofluid with the potential for noninvasive collection,provides profound insights into human health conditions,because it contains various chemicals and information to be utilized for the monitoring of well-being,stress levels,exercise,and ***,wearable sweat sensors have been developed as a promising substitute to conventional laboratory sweat detection *** sensors are promising to realize low-cost,real-time,in situ sweat measurements,and provide great opportunities for health status evaluation analysis based on personalized big *** review first presents an overview of wearable sweat sensors from the perspective of basic components,including materials and structures for specific sensing applications and *** strategies and specific methods of the fabrication of wearable power management are also ***,current challenges and future directions of wearable sweat sensors are discussed.

关键词： Flexibleelectronics Wearablesensors Sweat sensors electrochemical analysis Noninvasivehealth monitoring Powersupply

Recovery and separation of Fe and Mn from simulated chlorinated vanadium slag by molten salt electrolysis

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International Journal of Minerals,Metallurgy and Materials 2020年第12期27卷 1678-1686页

作者： Shi-yuan Liu Yu-lan Zhen Xiao-bo He Li-jun Wang Kuo-chih Chou Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

Tailings from the vanadium extraction process are discarded each year as waste,which contain approximately 30 wt%of *** our previous work,we extracted Fe and Mn from vanadium slag,and Fe and Mn existed in the form of FeCl_(2) and MnCl_(2) after chlorination by NH_(4) Cl to achieve effective and green usage of waste containing Fe and *** this work,square wave voltammetry(SWV)and cyclic voltammetry(CV)were applied to investigate the electrochemical behaviors of Fe^(2+)and Mn^(2+)in Na Cl-KCl melt at 800℃.The reduction processes of Fe^(2+)and Mn^(2+)were found to involve one *** diffusion coefficients of FeCl_(2) and Mn Cl_(2) in molten salt of eutectic mixtures Na Cl-KCl molten salt were *** electrodeposition of Fe and Mn were performed using two electrodes at a constant cell *** Mn/Fe mass ratio of the electrodeposited product in Na Cl-KCl-2.13 wt%FeCl_(2)-1.07 wt%Mn Cl_(2) was 0.0625 at 2.3 *** the electrolysis of NaCl-KCl-2.13 wt%Fe Cl_(2)-1.07 wt%MnCl_(2) melted at 2.3 V,the electrolysis was again started under 3.0 V and the Mn/Fe mass ratio of the electrodeposited product was *** process provides a novel method to effectively separate Fe and Mn from simulated chlorinated vanadium slag.

关键词： vanadium slag molten salt electrolysis separation electrochemical analysis

electrochemical and analytical characterization of three corrosion inhibitors of steel in simulated concrete pore solutions

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International Journal of Minerals,Metallurgy and Materials 2012年第1期19卷 38-47页

作者： Jin-jie Shi Wei Sun School of Materials Science end Engineering Southeast University Nanjing 211189 China Jiangsu Key Laboratory of Construction Materials Southeast University Nanjing 211189 China

Corrosion inhibitors for steel, such as sodium phosphate （Na3PO4）, sodium nitrite （NaNO2）, and benzotriazole （BTA）, in simulated concrete pore solutions （saturated Ca（OH）2） were investigated. Corrosion behaviors of steel in different solutions were studied by means of corrosion potential （Ecorr）, linear polarization resistance （LPR）, electrochemical impedance spectroscopy （EIS）, and potentiodynamic polarization （PDP）. A field emission scanning electron microscope （FESEM） equipped with energy dispersive X-ray analysis （EDXA） was used for observing the microstructures and morphology of corrosion products of steel. The results indicate that, compared with the commonly used nitrite-based inhibitors, Na3PO4 is not a good inhibitor, while BTA may be a potentially effective inhibitor to prevent steel from corrosion in simulated concrete pore solutions.

关键词： steel corrosion inhibitors electrochemical analysis concrete solutions

electrochemical Performance of Starch-Polyaniline Nanocomposites Synthesized By Sonochemical Process Intensification

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Journal of Renewable Materials 2019年第12期7卷 1279-1293页

作者： Narsimha Pandi Shirish H.Sonawane Sarang P.Gumfekar Anand Kishore Kola Pramod H.Borse Swapnil B.Ambade Sripadh Guptha Muthupandian Ashokkumar Department of Chemical Engineering National Institute of TechnologyWarangalTelanganaIndia Department of Chemical and Materials Engineering University of AlbertaEdmontonCanada International Advanced Research Centre for Powder Metallurgy and New Materials Balapur POHyderabadTelanganaIndia Department of Organic and Nano Engineering Hanyang University 222Wangsimni-roSeongdong-guSeoulKorea Department of Chemistry University of MelbourneVictoriaAustralia.

The present study deals with the intensified synthesis of starch-polyaniline(starch-PANI)nanocomposite using an ultrasound-assisted *** is a key component in this nanocomposite,which acts as a backbone of the nucleation of *** electrochemical property of the nanocomposite arises due to the addition of *** is one of green approach for the synthesis of bio nanocomposite using *** crystallinity of the composite is evaluated using the Scherrer *** starch-PANI nanocomposite was characterized by XRD,FT-IR,Raman,XPS and *** composite nanoparticles show spherical *** elemental composition of starch-PANI showed O 1s peak at 546 eV,N 1s peak at 416 eV,C 1s peak at 286 eV and S 1s peak at 176 *** electrochemical studies of the starch-PANI electrodes are evaluated by cyclic voltammetry(CV),galvanostatic charge/discharge(GCD),and electrochemical impedance spectroscopy(EIS).Starch-PANI electrode has shown the maximum specific capacitance of 499.5 F/g at 5 mV/s scan rate.

关键词： Starch polyaniline sonochemical synthesis ultrasound biocomposite electrochemical analysis supercapacitor

CoSb_3-graphite composite anode material for lithium ion batteries

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Rare Metals 2005年第1期24卷 42-45页

作者： XIEJian CAOGaoshao ZHAOXinbing DepartanentofMaterialsScienceandEngineering ZhejiangUniversityHangzhou310027China

The CoSb_3-graphite composite was prepared by ball-milling. Theelectrochemical performance of the composite material was evaluated using the lithium ion model cellLi / LiPF_6 (EC + DMC) / CoSb_3C_4. It was found that the CoSb_3C_4 composite shows higherreversible capacity than the pure CoSb_3 alloy, and its first reversible (Li-ions removal) capacityreaches 721 mA centre dot h centre dot g^(-1), which exceeds the theoretical capacity (550 mA centredot h centre dot g^(-1)) of CoSb_3C_4.

关键词： electrochemistry CoSb_3-graphite composite electrochemical analysis anodematerials lithium-ion batteries