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Inhibition of Zinc Corrosion by Fucoidan in Natural Sea water

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Acta Metallurgica Sinica(English Letters) 2017年第6期30卷 594-600页

作者： Cui Wang Jie Zhang Xiao-Lin Chen Bin Xiang Ji-Zhou Duan bao-rong hou College of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China Key Laboratory of Marine Environmental Corrosion and Biofouling Institute of OceanologyChinese Academy of SciencesQingdao 266071China Institute of Oceanology Chinese Academy of SciencesQingdao 266071China

Research on corrosion behaviour of zinc in natural sea water without and with fucoidan was carried out by potentiodynamic polarisation test and electrochemical impedance spectroscopy （EIS）. The results revealed that fucoidan serves as a good inhibitor for zinc in sea water. Polarisation curves suggested that corrosion potential values shifted to the positive ones after adding inhibitor and fucoidan retards anodic reaction more. Thus, fucoidan can be acted as anodic inhibitor. EIS results showed two phenomena including a charge transfer and an adsorption film. The corrosion inhibition of fucoidan was further confirmed by the scanning electron microscope （SEM） and atomic force microscope （AFM） analysis. Langmuir＇s adsorption isotherm was found the appropriate adsorption model.

关键词： Zinc Polarisation EIS AFM XRD Anodic protection

Environmentally friendly expanded graphite-doped ZnO superhydrophobic coating with good corrosion resistance in marine environment

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Rare Metals 2023年第9期42卷 3075-3087页

作者： Si-Wei Wu Quan-Tong Jiang Shuai Yuan Qing-Kun Zhao Chang Liu Heng Tang Qiang Sun Ji-Zhou Duan bao-rong hou Sea Institute of Oceanology Chinese Academy of SciencesGuangzhou510301China CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling Institute of OceanologyChinese Academy of SciencesQingdao266071China Sanya Institute of Ocean Eco-Environmental Engineering Sanya572000China University of Chinese Academy of Sciences Beijing100049China Open Studio for Marine Corrosion and Protection Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao266071China

Designing and fabricating the marine anti-corrosion materials without fluorine by superhydrophobic method is a huge challenge. In this study, an environmentally friendly composite coating was prepared by combing modified expanded graphite(EAG) with nano zinc oxide(ZnO). This coating showed superhydrophobic surface and good corrosion resistance. Fourier transform infrared spectroscopy(FITR), X-ray diffraction(XRD),and scanning electron microscopy(SEM) were used to characterize the materials in fabricating process of the coating. The properties of three composite coatings(ZnO,EAG, and EAG@ZnO) were analyzed, including surface roughness, water contact angle, corrosion resistance, selfcleaning and anti-fouling. The combination of ZnO and EAG caused a big water contact angle, leading superhydrophobic surface of the composite coatings. The electrochemical results showed that the superhydrophobic EAG@ZnO coating had a larger capacitive arc diameter and charge transfer resistance, indicating the enhanced anti-corrosion resistance. Meanwhile, the EAG@ZnO coating also showed good self-cleaning and anti-fouling performance according to solid and liquid pollutants *** addition, the mechanical properties and stability of the superhydrophobic EAG@ZnO coatings were evaluated by knife peeling and finger scratch tests. In summary, these superhydrophobic and anti-fouling EAG@ZnO composite coatings provide a potential application in marine corrosion and protection field.

关键词： Coating Superhydrophobic Anti-corrosion Anti-fouling Environmentally friendly

Low-temperature chlorination roasting technology for the simultaneous recovery of valuable metals from spent LiCoO_(2)cathode material

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 80-91页

作者： Junjie Shi Changle hou Jingjing Dong Dong Chen Jianzhong Li Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

With the continuous increase in the disposal volume of spent lithium-ion batteries(LIBs),properly recycling spent LIBs has become essential for the advancement of the circular *** study presents a systematic analysis of the chlorination roasting kinetics and proposes a new two-step chlorination roasting process that integrates thermodynamics for the recycling of LIB cathode *** activation energy for the chloride reaction was 88.41 kJ/mol according to thermogravimetric analysis–derivative thermogravimetry data obtained by using model-free,model-fitting,and Z(α)function(αis conversion rate).Results indicated that the reaction was dominated by the first-order(F1)model when the conversion rate was less than or equal to 0.5 and shifted to the second-order(F2)model when the conversion rate exceeded *** conditions were determined by thoroughly investigating the effects of roasting temperature,roasting time,and the mass ratio of NH_(4)Cl to LiCoO_(2).Under the optimal conditions,namely 400℃,20 min,and NH_(4)Cl/LiCoO_(2)mass ratio of 3:1,the leaching efficiency of Li and Co reached 99.43% and 99.05%,*** of the roasted products revealed that valuable metals in LiCoO_(2)transformed into CoCl_(2) and ***,the reaction mechanism was elucidated,providing insights for the establishment of a novel low-temperature chlorination roasting technology based on a crystal structure *** technology can guide the development of LIB recycling processes with low energy consumption,low secondary pollution,high recovery efficiency,and high added value.

关键词： spent lithium-ion battery thermodynamics chlorination roasting kinetics circular economy

Synthesis and Crystal Structure of N′-(4-fluorobenzylidene)-2-(1H-1,2,4-triazole-1-yl)acetohydrazide

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Chemical Research in Chinese Universities 2006年第5期22卷 571-573页

作者： LI Wei-hua ZHANG Shu-fang hou bao-rong YU Zhi-gang Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 P. R. China College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266033 P. R. China

N′-（4-fluorobenzylidene）-2-（ 1H-1,2,4-triasole-1-yl） acetohydrazide was synthesized by the reaction of 4-flu- orobenzaldehyde with 2-（ 1H-1,2,4-triazole-1-yl） acetohydrazide. The structure was confirmed via elemental analysis, MS, ^1H NMR, IR, and X-ray diffraction. It crystallized in a monoclinic system with space group P2 （ 1 ）, α = 0.4905（1） nm, b =0. 8160（2） nm, c = 1.4105（3） nm, β =93. 33（3）°, Z=2, V=0.5636（2） nm^3, Do =1.457 Mg/m^3,μ =0. 112 mm^-1 , F（000） =256, and final R1 =0. 0685. Several intermolecular hydrogen-bond interactions existed in the crystal structure, facilitating the stabilization of the compound.

关键词： 1H-1,2,4-Triazole Acetohydrazide Crystal structure Biological activity

Viscosity and structure relationship with equimolar substitution of CaO with MgO in the CaO–MgO–Al_(2)O_(3)–SiO_(2)slag melts

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 70-79页

作者： Yong hou Shuo Zhang Jie Dang Jia Guo Hanghang Zhou Xuewei Lü College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing UniversityChongqing 400044China

Currently,the Al_(2)O_(3)content in the high-alumina slag systems within blast furnaces is generally limited to 16wt%–18.5wt%,making it challenging to overcome this *** most studies that concentrated on managing the MgO/Al_(2)O_(3)ratio or basicity,this paper explored the effect of equimolar substitution of MgO for CaO on the viscosity and structure of a high-alumina CaO-MgO-Al_(2)O_(3)-SiO_(2)slag system,providing theoretical guidance and data to facilitate the application of high-alumina *** results revealed that the viscosity first decreased and then increased with higher MgO substitution,reaching a minimum at 15mol%MgO *** transform infrared spectroscopy(FTIR)results found that the depths of the troughs representing[SiO_(4)]tetrahedra,[AlO_(4)]tetrahedra,and Si-O-Al bending became progressively deeper with increased MgO *** of the Raman spectra showed that the average number of bridging oxygens per Si atom and the X_(Q^(3))/X_(Q^(2))(X_(Q^(i))is the molar fraction of Q^(i) unit,and i is the number of bridging oxygens in a[SiO_(4)]tetrahedral unit)ratio increased from 2.30 and 1.02 to 2.52 and 2.14,respectively,indicating a progressive polymerization of the silicate structure.X-ray photoelectron spectroscopy(XPS)results highlighted that non-bridging oxygen content decreased from 77.97mol% to 63.41mol% with increasing MgO concentration,whereas bridging oxygen and free oxygen contents *** analysis demonstrated a gradual increase in the polymerization degree of the tetrahedral structure with the increase in MgO ***,bond strength is another important factor affecting the slag *** occurrence of a viscosity minimum can be attributed to the complex evolution of bond strengths of non-bridging oxygens generated during depolymerization of the[SiO_(4)]and[AlO_(4)]tetrahedral structures by CaO and MgO.

关键词： aluminosilicate viscosity structure spectroscopy

新型抗癫痫发作药物吡仑帕奈添加治疗0~18岁儿童难治性癫痫的临床观察研究

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中国全科医学 2025年第2期28卷 250-256页

作者：马湖萍任蓉侯梅苑爱云青岛大学附属妇女儿童医院神经康复科山东省青岛市266034 山东省潍坊市寿光市人民医院新生儿科 262700

背景目前儿童难治性癫痫(RE)仍是癫痫的治疗难点,国内吡仑帕奈(PER)治疗儿童RE尚属新药,缺少PER对儿童RE添加治疗的建议,且国内报道中使用PER治疗的RE患儿样本量较少。因此PER对于儿童RE,尤其低年龄RE患儿的疗效仍需大样本、进一步研究... 详细信息

背景目前儿童难治性癫痫(RE)仍是癫痫的治疗难点,国内吡仑帕奈(PER)治疗儿童RE尚属新药,缺少PER对儿童RE添加治疗的建议,且国内报道中使用PER治疗的RE患儿样本量较少。因此PER对于儿童RE,尤其低年龄RE患儿的疗效仍需大样本、进一步研究。目的探究PER添加治疗儿童RE的疗效、可能的适应证、不良反应及耐受性。方法对2022年1月—2023年1月在青岛大学附属妇女儿童医院诊治的0~18岁RE患儿进行自身对照、回顾性分析,对比PER添加治疗前后不同观察时点的癫痫发作频率的变化,评估PER的治疗效果,记录药物不良反应及药物保留率,并分析PER有效组与无效组的临床特征。结果共纳入192例研究对象,PER添加治疗后,第12、24、36周的有效率分别为56.3%(108/192)、62.1%(113/182)、69.7%(122/175),无发作率分别为19.3%(37/192)、21.4%(39/182)、24.6%(43/175)。不良反应发生率为16.1%(31/192),主要为头晕、暴躁易怒、无力嗜睡等,末次随访药物保留率为91.1%(175/192)。PER添加治疗的RE患儿连续用药12周时,治疗总有效与无效/恶化患儿起病年龄、抗癫痫治疗病程、起源类型、发作形式、添加PER前发作频率、联合其他抗癫痫发作药物(ASMs)数量、生酮饮食/外科治疗情况,差异有统计学意义(P<0.05)。此外,178例患儿进行了脑电图检查,167例患儿进行了头颅磁共振检查;治疗总有效与无效/恶化患儿脑电图检查结果、头颅磁共振检查结果比较,差异有统计学意义(P<0.05)。脑电图检查结果中以脑前部(前、中、颞前、中部)放电总有效占比较高;头颅影像学检查结果中以正常者总有效占比较高,其次为以脑白质损伤为主的患儿。结论PER添加治疗儿童RE整体有效率及保留率较高,不良反应轻微,药物耐受情况好。对于起病年龄晚、发作形式为运动性发作、局灶性起源、抗癫痫治疗病程短、联合用药数量及发作频率少的RE患儿更为有效。脑电图中以脑前部(前、中、颞前、颞中部)放电、头颅磁共振结果正常者总有效占比较高。

关键词：难治性癫痫儿童吡仑帕奈治疗结果药物不良反应

Crystal Structure and DFT Studies of a Triazole Derivative: 4-(2-Hydrobenzylideneamino)-3-(1,2,4-triazol-4-yl-methyl)1H-1,2,4-triazole-5(4H)-thione

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Chemical Research in Chinese Universities 2007年第3期23卷 343-348页

作者： LI Wei-hua ZHANG Shu-fang LIU Fa-qian hou bao-rong Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 P. R. China Graduate School of the Chinese Academy of Sciences Beijing 100049 P. R. China Key Laboratory of Advanced Materials Qingdao University of Science and Technology Qingdao 266042 P. R. China

A novel triazole derivative 4-（ 2-hydrobenzylideneamino ） -3-（ 1,2,4-triazol-4-ylmethyl ） -1H-1,2,4-triazole-5 （4H）-thione（1） was synthesized and characterized using elemental analysis, FTIR, and 1^H NMR, and its crystal structure was determined via X-ray single crystal diffraction analysis. Crystal data： monoclinic, P2 （ 1 ）/c, a = 0. 83335（9） nm, b = 1. 49777（16） nm, c = 1. 14724（12） nm,β = 107. 990（2）°, D = 1. 470 Mg/m^3, and Z =4. The geometries and the vibrational frequencies were determined using the density functional theory（DFT） method at the B3LYP/6-31G^＊ level. To demonstrate the accuracy of the reaction route of compound 1, one of the important intermediates was also tested using the same method. The structural parameters of the two compounds calculated using the DFT study are close to those of the crystals, and the harmonic vibrations of the two compounds computed via the DFT method are in good agreement with those in the observed IR spectral data. The thermodynamic properties of the title compound were calculated, and the compound shows a good structural stability at normal temperature. The test results of biological activities show that it has a certain bactericidal ability.

关键词： Triazoles Synthesis Crystal structure DFT

Inhibition of the cGAS–STING pathway:contributing to the treatment of cerebral ischemia-reperfusion injury

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Neural Regeneration Research 2025年第7期20卷 1900-1918页

作者： Hang Yang Yulei Xia Yue Ma Mingtong Gao Shuai hou Shanshan Xu Yanqiang Wang School of Clinical Medicine Shandong Second Medical UniversityWeifangShandong ProvinceChina Department of Emergency The Affiliated Hospital of Weifang Medical UniversityWeifangShandong ProvinceChina Department of Neurology Ⅱ The Affiliated Hospital of Weifang Medical UniversityWeifangShandong ProvinceChina

The cGAS–STING pathway plays an important role in ischemia-reperfusion injury in the heart,liver,brain,and kidney,but its role and mechanisms in cerebral ischemia-reperfusion injury have not been systematically ***,we outline the components of the cGAS–STING pathway and then analyze its role in autophagy,ferroptosis,cellular pyroptosis,disequilibrium of calcium homeostasis,inflammatory responses,disruption of the blood–brain barrier,microglia transformation,and complement system activation following cerebral ischemia-reperfusion *** further analyze the value of cGAS–STING pathway inhibitors in the treatment of cerebral ischemia-reperfusion injury and conclude that the pathway can regulate cerebral ischemia-reperfusion injury through multiple *** of the cGAS–STING pathway may be helpful in the treatment of cerebral ischemia-reperfusion injury.

关键词： calcium homeostasis cellular autophagy cerebral ischemia-reperfusion injury cGAS–STING pathway ferroptosis gut–brain–microbiota axis inflammatory light chain 3 microglial cells Syntaxin-17 protein

Structure and Properties of Semiconductor Microclusters Ga_nP_n(n=1-4): A First Principle Study

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Chemical Research in Chinese Universities 2004年第5期20卷 640-646页

作者： ZHANGCai-rong CHENHong-shan WANGGuang-hou CollegeofPhysicsandElectronicEngineering NorthwestNormalUniversityLanzhou730070PRChina NationalLaboratoryofSolidStateMicrostructure NanjingUniversityNanjing210093P.R.China

The possible geometrical structures and relative stabilities of semiconductor microclusters Ga\-\%n\%P\-\%n(n\%=1\_4) were studied by virtue of density functional calculations with generalized gradient approximation(B3LYP). For the most stable isomers of Ga\-\%n\%P\-\%n(n\%=1\_4) clusters, the electronic structure, vibrational properties, dipole moment, polarizability and ionization potential were analyzed by means of HF, MP2, CISD and B3LYP methods with different basis sets.

关键词： Ga\-\%n\%P\-\%n(n\%=1\_4) cluster Vibrational property Ionization potential Dipole moment Polarizability