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Journal of Materials Science & Technology 2021年第11期70卷 176-184页

作者： Liping Han Bo Li Hao Wen Yuxi guo zhan Lin Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006China

There are multiple contaminants in practical wastewater;and the photodegradation of mixed pollutants is a challenge in the field of ***,we design a mesoporous 2D/2D TiO_(2)(B)-BiOBr heterojunction photocatalyst for the photodegradation of mixed *** a coupling structure results in an enhancement in the disconnection of photoexcited carriers,and the increase of absorption and reaction *** 2D/2D TiO_(2)(B)-BiOBr demonstrates outstanding photocatalytic activity for photodegrading rhodamine B(RhB),methyl orange(MO),tetracycline hydrochloride(TCH),and bisphenol A(BPA)simultaneously under visible light,which is 4.7,1.4,23 and 16.4 times as high as that of original BiOBr,*** work represents a possible solution to devise promising and efficient photocatalysts for the treatment of practical wastewater in the near future.

关键词： 2D/2D TiO_(2)(B)-BiOBr Heterojunction Mixed pollutants Photodegradation

Influence of hydrogen concentration on Fe_2O_3 particle reduction in fluidized beds under constant drag force

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International Journal of Minerals,Metallurgy and Materials 2015年第1期22卷 12-20页

作者： Lei guo Han Gao Jin-tao Yu Zong-liang zhang zhan-cheng guo State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

The fixed-gas drag force from a model calculation method that stabilizes the agitation capabilities of different gas ratios was used to explore the influence of temperature and hydrogen concentration on fluidizing duration, metallization ratio, utilization rate of reduction gas, and sticking behavior. Different hydrogen concentrations from 5vol%to 100vol%at 1073 and 1273 K were used while the drag force with the flow of N2 and H2 （N2：2 L·min^-1;H2：2 L·min^-1） at 1073 K was chosen as the standard drag force. The metallization ratio, mean reduc-tion rate, and utilization rate of reduction gas were observed to generally increase with increasing hydrogen concentration. Faster reduction rates and higher metallization ratios were obtained when the reduction temperature decreased from 1273 to 1073 K. A numerical relation among particle diameter, particle drag force, and fluidization state was plotted in a diagram by this model.

关键词： fluidized beds ferric oxide iron ores agglomeration hydrogen drag force

Stabilizing iridium sites via interface and reconstruction regulations for water oxidation in alkaline and acidic media

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Journal of Energy Chemistry 2024年第2期89卷 355-363,I0009页

作者： Weibin Chen Yanhui Song Lei Li Junjie guo zhan Lin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006GuangdongChina Key Laboratory of Interface Science and Engineering in AdvancedMaterials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024ShanxiChina

Exploring effective iridium(Ir)-based electrocatalysts with stable iridium centers is highly desirable for oxygen evolution reaction(OER).Herein,we regulated the incorporation manner of Ir in Co_(3)O_(4)support to stabilize the Ir sites for effective *** anchored on the surface of Co_(3)O_(4)in the form of Ir(OH)_6 species,the created Ir-OH-Co interface leads to a limited stability and poor acidic OER due to Ir *** doped into Co_(3)O_(4)lattice,the analyses of X-ray absorption spectroscopy,in-situ Raman,and OER measurements show that the partially replacement of Co in Co_(3)O_(4)by Ir atoms inclines to cause strong electronic effect and activate lattice oxygen in the presence of Ir-O-Co interface,and simultaneously master the reconstruction effect to mitigate Ir dissolution,realizing the improved OER activity and stability in alkaline and acidic *** a result,Ir_(lat)@Co_(3)O_(4)with Ir loading of 3.67 wt%requires 294±4 mV/285±3 mV and 326±2 mV to deliver 10 mA cm^(-2)in alkaline(0.1 M KOH/1.0 M KOH)and acidic(0.5 M H_(2)SO_(4))solution,respectively,with good stability.

关键词： Interface effect Reconstruction Ir dissolution Ir-O-Co Oxygen evolution reaction

Classification and quantification of excavated soil and construction sludge:A case study in Wenzhou,China

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Frontiers of Structural and Civil Engineering 2022年第2期16卷 202-213页

作者： Qimeng guo Liangtong zhan Yunyang SHEN Linbo WU Yunmin Chen MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering Zhejiang UniversityHangzhou310058China College of Civil Engineering and Architecture Zhejiang Sci-Tech UniversityHangzhou310018China

With rapid urbanization in China,a large amount of excavated soil and construction sludge is being generated from geotechnical and underground *** sustainable management of these construction wastes,it is essential to quantify their production *** present study has attempted to classify the excavated soil and construction sludge according to their composition and geotechnical properties(particle size,water content,plasticity index).Based on these classifications,a new approach was proposed to quantify the *** said approach was based on multi-source information,such as the urban topographic map,geological survey reports,urban master plan,and remote sensing images.A case study in Wenzhou city of China was also pursued to illustrate the validity of the newly developed *** research showed that in 2021–2025,the total excavated soils and construction sludge production in Wenzhou would reach 107.5×10^(6) and 81.7×10^(6) m^(3),***,the excavated soil was classified into the miscellaneous fill,crust clay,muddy clay and mud with silty ***,the construction sludge was classified as liquid sludge and paste-like *** classification and quantification can serve as guidance for disposal and recycling,thereby leading to high-level management of waste disposal.

关键词： excavated soil construction sludge geotechnical and underground engineering production classification

Er-modified MnO_(x) for selective catalytic reduction of NO_(x) with NH_(3) at low temperature:Promoting effect of erbium on catalytic performance

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Journal of Rare Earths 2023年第6期41卷 917-925,I0004页

作者： Zhilin Fang Shuwen zhang Aiyong Wang Yanglong guo Yun guo Li Wang Wangcheng zhan Key Laboratory for Advanced Materials Research Institute of Industrial CatalysisSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China International Joint Laboratory of Catalytic Chemistry Department of ChemistryResearch Center of Nano Science and TechnologyCollege of SciencesShanghai UniversityShanghai 200444China

Various Er modified MnO_(x) catalysts were synthesized using co-precipitation approach and tested in the selective catalytic reduction of NO_(x) by ammonia(NH_(3)-SCR).Catalysts were analyzed with various characterization techniques,and it is found that the doping of Er can enormously enhance the catalytic performance of MnO_(x)***_(0.1)demonstrates advantageous catalytic performance in the NH_(3)-SCR reaction owing to rich surface acidic sites,high surface content of Mn^(4+),superior redox capacity,and enhanced surface-adsorbed *** diffuse reflectance infrared Fourier transform spectroscopy(DRIFTs)analysis,it is suggested that the MnEr0.1catalyst follows mainly Eley-Rideal mechanism while MnO_(x) is dominated by Langmuir-Hinshelwood mechanism.

关键词： Mn-based catalyst Selective catalytic reduction Rare earths Co-precipitation

Preparation of Polyimide/BaTiO_3/Ag Nanocomposite Films via in situ Technique and Study of Their Dielectric Behavior

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Chinese Journal of Polymer Science 2014年第4期32卷 424-431页

作者： Jia-yu zhan guo-feng Tian zhan-peng Wu Sheng-li Qi 武德珍 State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing Building Materials Academy of Science Research/State Key Laboratory of Solid Waste Reuse for Building Materials

Triphase polyimide nanocomposite films were fabricated using barium titanate （BaTiO3） with high dielectric constant and silver （Ag） with high conductivity as fillers. In situ method was utilized to obtain the homogeneous dispersion of nanoparticles. The in situ polymerization of polyimide precursor-poly（amic acid） was performed in the presence of BaTiO3 particles. Silver compound 1,1,1-trifluoro-2,4-pentadionato silver（I） was added into the BaTiO3 containing poly（amic acid） solution to achieve silver nanoparticles via in situ self metallization technique. The thermally induced reduction converted silver （I） to metallic silver with concomitant imidization of poly（amic acid） to polyimide. Both BaTiO3 and silver nanoparticles were uniformly dispersed in the polyimide substrate. The dependence of dielectric behavior on the BaTiO3 and Ag contents was studied. The incorporation of small amount of silver nanoparticles greatly increased dielectric constant of composite films.

关键词： Polyimide Silver Barium titanate Nanocomposites Dielectrics.

Spatial-temporal Characteristics of Green Development Efficiency and Influencing Factors in Restricted Development Zones:A Case Study of Jilin Province,China

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Chinese Geographical Science 2020年第4期30卷 736-748页

作者： LI ping TONG Lianjun guo Yanhua guo Fuyou Northeast Institute of Geography and Agroecology Chinese Academy of SciencesChangchun 130102China University of Chinese Academy of Sciences Beijing 100049China Urban Development Institute Jilin Province Academy of Social SciencesChangchun 130000China College of Geographical Science Northeast Normal UniversityChangchun 130024China College of Geography and Tourism Qufu Normal UniversityRizhao 276826China

Green development is an important issue of sustainable development in *** to the relatively backward economy and the fragile ecological environment,restricted development zones need to embrace green *** 38 counties in Jilin Province as the empirical research objects,and based on cross-sectional data for each county in 2005,2010,and 2015,we accurately depicted the spatiotemporal evolutionary characteristics of green development efficiency(GDE)in restricted development zones of Jilin Province using the slacks-based measure-data envelope analysis(SBM-DEA)***,the factors that influence GDE were further analyzed using the Tobit *** found that:first,GDE showed a V-shaped trend in restricted development zones of Jilin *** differences in GDE in the eastern,central,and western Jilin Province increased ***,76%of counties in the restricted development zones had high or higher *** resource-based cities were the main areas with low or lower ***,the economic development level was the core factor affecting *** level had a significant negative effect on GDE in the restricted development *** effect of technological innovation level on GDE fluctuated,and we found that a‘backward mechanism’of technological innovation was beginning to *** structure and environmental governance had no significant effects on GDE.

关键词： green development efficiency spatiotemporal evolution influencing factor restricted development zones Jilin Province

基底膜相关基因在类风湿关节炎不同中医证型中的转录组学分析及药物预测

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中国组织工程研究 2025年第25期29卷 5486-5500页

作者：刘源渠源万雅坤郭婧宇姜萍山东中医药大学第一临床医学院山东省济南市250014 山东中医药大学康复医学院山东省济南市250014 山东中医药大学中医学院山东省济南市250014 山东中医药大学附属医院山东省济南市250014

背景:基底膜基因与类风湿关节炎的发生发展密切相关,但不同中医证型下基底膜相关基因在其发病机制中的作用尚不明确。目的:基底膜基因联合转录组学分析探讨类风湿关节炎5种不同中医证型的发病机制差异,并进行潜在治疗药物预测。方法:基... 详细信息

背景:基底膜基因与类风湿关节炎的发生发展密切相关,但不同中医证型下基底膜相关基因在其发病机制中的作用尚不明确。目的:基底膜基因联合转录组学分析探讨类风湿关节炎5种不同中医证型的发病机制差异,并进行潜在治疗药物预测。方法:基于GEO数据库整理类风湿关节炎相关中医证型芯片数据以及基底膜相关基因,利用R-limma包筛选差异表达基因,Mfuzz包进行表达趋势分析。借助STRING数据库构建PPI网络,UPset筛选关键基因,通过R-clusterProfiler包对差异表达基因进行GSEA及富集分析,同时绘制ROC曲线评估基底膜相关核心靶点对5种证型分别的诊断价值。基于CIBERSORT核心算法计算每种证型的免疫浸润情况。最后,利用SymMap和COREMINE数据库预测可靶向基底膜相关核心基因治疗类风湿关节炎不同证型的潜在中药及小分子药物。结果与结论:①在5种类风湿关节炎中医证型中(风湿痹阻证、寒湿痹阻证、肝肾亏虚证、气血两虚证及血瘀阻络证)分别筛选出67,47,59,57,55个基底膜相关差异表达基因,其中关键靶点分别为5,7,5,3,5个。③各证型中富集最多的为细胞基质黏附、免疫细胞迁移及胶原代谢等生物过程以及细胞外基质受体相互作用、PI3K-Akt、局灶性粘连和Rap1信号通路等。④药物预测结果显示,土茯苓、川乌、绵马贯众及黄精是通过影响基底膜基因治疗5种类风湿关节炎中医证型最具潜力的中药。⑤结果证实,基底膜相关基因的异常表达可能是通过调控细胞附着、免疫细胞迁移及炎症反应等多个途径影响类风湿关节炎的发生和发展,在不同证型中有着差异表现,其中ITGA6可作为5种类风湿关节炎证型中共同的诊断标志物。清热解毒类中药可能是类风湿关节炎不同证型治疗中可以贯穿始终的潜在有效药物。

关键词：基底膜相关基因证型类风湿关节炎中药转录组学分析 GSEA分析免疫浸润分子对接药物预测机制研究

Studies　on　the　Reactivities　of　Undecatungstogallates　K＿n［GaW＿（11）O＿（39）M（H＿2O）］·xH＿2O（M＝Mn，Co，Ni，Cu，Cr，FeorZn）

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Chemical Research in Chinese Universities 1995年第1期11卷 1-8页

作者： LIU Jing-fu zhan Xiao-peng WANG Fu-quan LI guo-ping YANG Qi-hua and WANG Jing-ping( Department of Chemistry , Northeast Normal University , Changchun , 130024) NE NORMAL UNIV DEPT CHEMCHANGCHUN 130024PEOPLES R CHINA

ndecatungstogallates K_n[GaW_(11)O_(39)M (H_2O)]· xH_2O (M=Mn, Co , Ni , Cu ,Cr, Fe or Zn) were prepared and their redox properties in solution were investigat-ed using polarographic and cyclic voltammographic methods. Experimental resultsindicated that the heteropolyanions underwent two-step , two-electron tungsten re-duction processes, and each reduction process was accompanied by *** complexes of Cu and Mn exhibit voltammetric redox features corresponding toreduction of Cu￣Ⅰ to Cu￣Ⅰ and oxidation of Mn￣Ⅱ to Mn￣Ⅲ and Mn￣Ⅳ. The title het-eropolyanions show catalysis effect on olefin epoxidation by iodosylbenzene or hy-drogen peroxide.

关键词： Undecatungstogallate with a transition metal Redox property Olefinepoxidation.

Modeling the WMAP large-angle anomalies as an effect of a local density inhomogeneity

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Research in Astronomy and Astrophysics 2010年第2期10卷 116-124页

作者： Li-ping He Quan guo National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

We investigate large-angle scale temperature anisotropy in the Cosmic Microwave Background （CMB） with the Wilkinson Microwave Anisotropy Probe （WMAP） data and model the large-angle anomalies as the effect of the CMB quadrupole anisotropies caused by the local density inhomogeneities. The quadrupole caused by the local density inhomogeneities is different from the special relativity kinematic quadrupole. If the observer inhabits a strong inhomogeneous region, the lo- cal quadrupole should not be neglected. We calculate such local quadrupole under the assumption that there is a huge density fluctuation field in the direction （284°, 74°）, where the density fluctuation is 10-3, and its center is - 112 h-1 Mpc away from us. After removing such mock signals from WMAP data, the power in the quadrupole, C2, increases from the range （200 - 260 μK2） to - 1000 μK2. The quantity S, which is used to estimate the alignment between the quadrupole and the octopole, decreases from （0.7 - 0.74） to （0.31 - 0.37）, while the model predicts that C2 = 1071.5 μK2, and S = 0.412. So our local density inhomogeneity model can, in part, explain the WMAP low-l anomalies.

关键词： cosmology: cosmic microwave background -- cosmology: large-scale structure of universe