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Amperometric Hydrogen Peroxide Biosensor Based on Multiwall Carbon Nanotubes and Cadmium Sulfide Quantum Dots

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Chemical Research in Chinese Universities 2010年第4期26卷 541-545页

作者： ZHANG Jin-lei tan xue-cai ZHAO Dan-dan tan Sheng-wei HUANG Zeng-wei MI Yan HUANG Zai-yin College of Chemistry and Ecological Engineering Guangxi University for Nationalities Nanning 530006 P. R. China Department of Chemistry and Life Science Baise University Baise 533000 P. R. China

A novel third-generation hydrogen peroxide（H2O2） biosensor（Hb/CdS/MWNTs/GCE） was fabricated through hemoglobin（Hb） adsorbed onto the mercaptoacetic acid modified CdS QDs/carboxyl multiwall carbon nanotubes＇（MWNTs） films. Cyclic voltammogram of Hb/CdS/MWNTs/GCE showed a pair of well-defined and quasi-reversible redox peaks with a formal potential（E^0） of-0.230 V（vs. Ag/AgCl） in 0.1 mol/L pH=8.0 phosphate buffer solution（PBS）, which was the characteristic of the Hb heme Fe（Ⅲ）/Fe（Ⅱ） redox couple. The biosensor shows an excellent electrocatalytic activity to the reduction of H2O2. The response time of the designed biosensor to H202 at a potential of-0.30 V was less than 2 s and linear relationships were obtained in the concentration ranges of 2.0×10^-6-2.7×10^-3 mol/L and 2.7×10^-3-7.7×10^-3 mol/L with a detection limit of 3.0×10^-7 mol/L（S/N=3）. The apparent Michaelis-Menten constant Km was estimated to be 1.324 mmol/L that illustrated the excellent biological activity of the fixed Hb.

关键词： Hemoglobin CdS quantum dot Multi-wall carbon nanotube Biosensor Direct electrochemistry

Development and Characterization of an Electrochemical Sensor for Cinchonidine Detection Based on Molecularly Imprinted Polymer with Modified Rosin as Cross-linker

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Chemical Research in Chinese Universities 2012年第3期28卷 410-414页

作者： LIU Li tan xue-cai ZHAO Dan-dan WANG Lin LEI Fu-hou HUANG Zai-yin School of Chemistry and Ecological Engineering Guangxi University for NationalitiesNanning 530008P.R.China Guangxi Key Laboratory of Chemistry and Engineering of Forest Produts Guangxi University for NationalitiesNanning 530008P.R.China Key Laboratory of Chemical and Biological Transforming Process Guangxi UniversityNanning 530008P.R.China

Molecularly imprinted polymers（MIPs） were applied as molecular recognition elements to an electro- chemical sensor for cinchonidine（CD）. A kind of MIP was synthesized with cinchonidine as template, modified ro- sin（ethylene glycol maleic rosinate acrylate） containing the skeleton of phenanthrene rings as cross-linker and me- thylacrylic acid as functional monomer. MIP membrane was prepared on a glassy carbon electrode for the determina- tion of CD via free radical polymerization method. Electrochemical impedance spectroscopy（EIS） and cyclic vol- tammetry（CV） were used to characterize the membrane electrochemical behavior in electrode fabrication process. The experimental conditions were discussed. Under optimum conditions, it was found that the response of peak cur- rents was linear to the concentration of CD in a range of 0.013-2.26 mmol/L. The detection limit for CD is 1 μmol/L the relative standard deviation for 100 μmol/L CD is 1.34% and the incubation time is 2 min. The sensor was applied to the determination of CD in urine samples with satisfactory results.

关键词： Ethylene glycol maleic rosinate acrylate Cinchonidine Molecularly imprinted polymer Electrochemicalsensor

A Multi-Objective Particle Swarm Optimization Algorithm Based on Decomposition and Multi-Selection Strategy

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Computers, Materials & Continua 2025年第1期82卷 997-1026页

作者： Li Ma cai Dai Xingsi xue Cheng Peng School of Computer Science Shaanxi Normal UniversityXi’an710119China Fujian Provincial Key Laboratory of Big Data Mining and Applications Fujian University of TechnologyFuzhou350118China Information Construction and Management Center and Institute of Artificial Intelligence and Educational New Productivity Ningxia Normal UniversityGuyuan756099China

The multi-objective particle swarm optimization algorithm(MOPSO)is widely used to solve multi-objective optimization *** the article,amulti-objective particle swarm optimization algorithmbased on decomposition and multi-selection strategy is proposed to improve the search ***,two update strategies based on decomposition are used to update the evolving population and external archive,***,a multiselection strategy is *** first strategy is for the subspace without a non-dominated *** the neighbor particles,the particle with the smallest penalty-based boundary intersection value is selected as the global optimal solution and the particle far away fromthe search particle and the global optimal solution is selected as the personal optimal solution to enhance global *** second strategy is for the subspace with a non-dominated *** the neighbor particles,two particles are randomly selected,one as the global optimal solution and the other as the personal optimal solution,to enhance local *** third strategy is for Pareto optimal front(PF)discontinuity,which is identified by the cumulative number of iterations of the subspace without non-dominated *** the subsequent iteration,a new probability distribution is used to select from the remaining subspaces to ***,an adaptive inertia weight update strategy based on the dominated degree is designed to further improve the search ***,the proposed algorithmis compared with fivemulti-objective particle swarm optimization algorithms and five multi-objective evolutionary algorithms on 22 test *** results show that the proposed algorithm has better performance.

关键词： Multi-objective optimization multi-objective particle swarm optimization decomposition multi-selection strategy

Bearing Fault Diagnosis Based on the Markov Transition Field and SE-IShufflenetV2 Model

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Structural Durability & Health Monitoring 2025年第1期19卷 125-144页

作者： Chaozhi cai Tiexin Xu Jianhua Ren Yingfang xue School of Mechanical and Equipment Engineering Hebei University of EngineeringHandan056038China

A bearing fault diagnosis method based on the Markov transitionﬁeld(MTF)and SEnet(SE)-IShufﬂenetV2 model is proposed in this paper due to the problems of complex working conditions,low fault diagnosis accuracy,and poor generalization of rolling ***,MTF is used to encode one-dimensional time series vibration sig-nals and convert them into time-dependent and unique two-dimensional feature ***,the generated two-dimensional dataset is fed into the SE-IShufﬂenetV2 model for training to achieve fault feature extraction and classiﬁ*** paper selects the bearing fault datasets from Case Western Reserve University and Paderborn University to experimentally verify the effectiveness and superiority of the proposed *** generalization performance of the proposed method is tested under the variable load condition and different signal-to-noise ratios(SNRs).The experimental results show that the average accuracy of the proposed method under different working conditions is 99.2%without adding *** accuracy under different working conditions from 0 to 1 HP is 100%.When the SNR is 0 dB,the average accuracy of the proposed method can still reach 98.7%under varying working ***,the bearing fault diagnosis method proposed in this paper is characterized by high accuracy,strong anti-noise ability,and ***,the proposed method can also overcome the inﬂuence of variable working conditions on diagnosis accuracy,providing method support for the accurate diagnosis of bearing faults under strong noise and variable working conditions.

关键词： Bearings Markov transitionﬁeld SE-IShufﬂenetV2

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壳聚糖与茜素红相互作用的电化学研究

高等学校化学学报 2005年第6期26卷 1055-1057页

作者：谭学才麦智彬邹小勇邱俊明蔡沛祥中山大学化学与化学工程学院

The interaction between Alizarin red（AR） and Chitosan（CS） was investigated in （0.1 mol/L） HAc-NaAc buffer solution（pH=4.5） on the glassy carbon electrode（GC） by cyclic and square wave voltammetry. The results show that both AR and AR-CS complex have a well-defined quasi-reversible redox wave(Vpc=-0.46 V, Vpa=-0.41 V) with adsorption characteristics. Electron transfer coefficient（α） and reaction rate constant（Ks） of AR and AR-CS were measured by cyclic voltammetry. The maximum binding numbers m between AR and CS was found to be 2 500. The experiment results confirmed that lower concentration of CS can enhance the detection sensitivity, while higher concentration of CS can lower the detection sensitivity. In the presence of 2.0×10-5 mol/L AR, the peak current of system are proportional to CS concentration in the range of 1.25×10-8～2.5×10-7 mol/L, and inversely proportional to CS concentration in the range of 2.5×10-7～1.25×10-5 mol/L, respectively. The binding interaction mechanism was also discussed.

关键词：壳聚糖茜素红相互作用电化学行为

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导电聚合物传感器的研究进展

分析测试学报 2005年第4期24卷 122-127页

作者：罗利军谭学才邹小勇蔡沛祥中山大学化学与化学工程学院广东广州510275

导电聚合物因其具有特殊的结构和优异的物理化学性能,而成为构建传感器的一种新材料。综述了近5年来导电聚合物在生物传感器、离子传感器、气敏传感器方面的研究进展,并对导电聚合物的研究动向作了展望。

关键词：导电聚合物生物传感器离子传感器气敏传感器

基于金属有机框架材料复合基底表面增强拉曼光谱测定水中的戊二醛

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光谱学与光谱分析 2022年第1期42卷 115-123页

作者：徐阳雷蕾严军陈裕雲谭学才刘玉乾王齐广西民族大学化学化工学院广西高校食品安全与药物分析化学重点实验室广西林产化学与工程重点实验室广西南宁530006 横县综合检验检测中心广西横县530300 昆明理工大学材料科学与工程学院云南昆明615000

戊二醛在精细化工中的使用,导致大量戊二醛产品如鞣革剂、消毒剂、蛋白质交联剂、组织固化剂等被排放到水体中,对水体生物及生态环境造成严重污染,对整个生态系统带来危害,因此开发对戊二醛快速简易的检测技术至关重要。表面增强拉曼光... 详细信息

戊二醛在精细化工中的使用,导致大量戊二醛产品如鞣革剂、消毒剂、蛋白质交联剂、组织固化剂等被排放到水体中,对水体生物及生态环境造成严重污染,对整个生态系统带来危害,因此开发对戊二醛快速简易的检测技术至关重要。表面增强拉曼光谱法(SERS)是一种基于待测物分子对光的散射效应而建立起来的定量检测技术,具有灵敏度高,所需样品量少,水干扰小等优势,功能强大,被广泛应用于分析检测领域中。目前尚未见文献报道基于SERS技术用于定量检测环境水体中戊二醛的案例。基于金纳米粒子(AuNPs)的局域表面等离子体共振效应、金属有机框架材料MIL-101(Cr)的富集能力以及对氨基苯硫酚(PATP)与戊二醛之间的席夫碱反应,基于Au@MIL-101/PATP复合材料建立了一种检测水中戊二醛的表面增强拉曼光谱分析方法。通过溶液浸渍法制备Au@MIL-101材料,再利用Au-S共价键作用将PATP修饰到AuNPs表面得到Au@MIL-101/PATP复合基底。利用透射电镜(TEM)、能量色散X射线光谱(EDS)、X射线衍射(XRD)、X射线光电子能谱(XPS)和拉曼光谱等方法对基底材料进行表征。论文研究了MIL-101(Cr)中AuNPs的密度对拉曼增强效果的影响,氯金酸浓度为0.6 g·L^(-1)时增强效果最好。戊二醛与PATP的席夫碱反应产物在1621 cm^(-1)处产生C N特征峰,戊二醛浓度与I 1078/I 1621信号比值在1×10^(-7)~1×10^(-5) mol·L^(-1)范围内具有良好的线性,检出限(LOD)为3.5×10^(-8) mol·L^(-1)。实际样品分析结果表明,自来水和河水水样中戊二醛的加标回收率分别为91.4%~111.8%,89.8%~114.2%,相对标准偏差分别为5.2%~14.5%,8.6%~13.4%。本方法具有操作简单、分析时间短、绿色等优点,为检测水中的痕量戊二醛提供了新思路。

关键词：表面增强拉曼光谱 MIL-101(Cr) 戊二醛席夫碱反应

纳米氧化铜掺杂的苯巴比妥分子印迹电化学传感器的制备及其识别性能研究

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分析化学 2014年第11期42卷 1661-1666页

作者：余会成黄学艺韦贻春雷福厚谭学才吴海鹰广西民族大学化学化工学院广西林产化学与工程重点实验室广州有色金属研究院

为了提高苯巴比妥分子印迹传感器的灵敏度,以甲基丙烯酸为功能单体,马来松香丙烯酸乙二醇酯为交联剂,热聚合了一种纳米氧化铜掺杂的苯巴比妥分子印迹传感器。分别采用循环伏安法（CV）、电化学交流阻抗法（EIS）、差分脉冲伏安法（DPV... 详细信息

为了提高苯巴比妥分子印迹传感器的灵敏度,以甲基丙烯酸为功能单体,马来松香丙烯酸乙二醇酯为交联剂,热聚合了一种纳米氧化铜掺杂的苯巴比妥分子印迹传感器。分别采用循环伏安法（CV）、电化学交流阻抗法（EIS）、差分脉冲伏安法（DPV）、计时电流法（CA）对这种印迹传感器的电化学性能进行了研究。分别采用红外光谱、扫描电镜对此印迹传感器的结构及形貌进行了表征。结果表明,以铁氰化钾为分子探针的间接检测中,铁氰化钾的峰电流值与苯巴比妥的浓度在1.2×107;.5×104mol/L范围内呈现良好的线性关系（线性相关系数R=0.9984）,检出限（S/N=3）为8.2×109mol/L。将此印迹传感器用于实际应用,回收率在96.5%;03.0%之间。

关键词：纳米氧化铜苯巴比妥马来松香丙烯酸乙二醇酯分子印迹聚合物

基于碳纳米管的化学修饰电极及电化学生物传感器的研究进展

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分析测试学报 2006年第3期25卷 120-125页

作者：麦智彬谭学才邹小勇中山大学化学与化学工程学院广东广州510275

综述了碳纳米管的结构、合成、纯化、功能化、分散及基于碳纳米管的化学修饰电极和电化学生物传感器的研究进展。

关键词：碳纳米管化学修饰电极电化学生物传感器评述