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Chemical Research in Chinese Universities 2016年第2期32卷 284-290页

作者： LIU Yujun ZHOU Feng zhan Su YAnG Yifan YIn Yanfeng Transportation Equipment and Ocean Engineering College Dalian Maritime University Dalian 116026 P. R. China

The films of photocatalysts have been widely used in decomposition pollutants. In this study, the films were successfully prepared from Bi2MoO6 and g-C3n4/Bi2MoO6 by a simple method, respectively. The samples were characterized by X-ray diffraction（XRD）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, Fourier transform infrared spectroscopy（FTIR）, photoluminescence（PL）, UV-Vis diffuse reflectance spectroscopy（DRS） and electrochemical experiments to investigate crystalline structure, morphology, composition and properties. The photocatalytic activity of the photocatalyst films for the pollutants was evaluated by degradation of methylene blue（MB） in aqueous solution under visible light irradiation. Experiments revealed that the film of g-C3na/Bi2MoO6 exhibited higher photocatalytic ability compared to the single-component photocatalyst, and proved its stability. The superior catalytic performance can be attributed to the effective separation of electron-hole pairs and the reduced rate of recombination. This work is of great value for the preparation of photocatalysts films.

关键词： Film g-C3n4 Bi2MoO6 Photocatalyst

Experimental Study and Finite Element Analysis on Ultimate Strength of Dual-Angle Cross Combined Section Under Compression

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Computer Modeling in Engineering & Sciences 2019年第6期119卷 499-539页

作者： Hao Hu Jian He Lian Song Zhifeng zhan Zhengliang Li School of Architectural Engineering Chongqing University of Arts and SciencesChongqing402160China Institute of Civil Engineering Disaster Prevention and Reduction Chongqing University of Arts and SciencesChongqing402160China School of Civil Engineering Chongqing UniversityChongqing400045China

This paper investigates Q420 dual-angle cross combined section columns under axial and eccentric compression by conducting *** specimen parameters,experimental setup,and test results are *** showed that local buckling occurred apparently for single internode specimens(λnder axial compression,while overall bending buckling appeared for others,and no torsional buckling *** theoretical formulas on stability factor were derived by the energy ***-linear finite element models considering residual stress were established using AnSYS which were verified by the corresponding experimental *** parametric study was to evaluate the effects of slenderness ratio(λ),width to thickness ratio of angles(b/t),the number of filled plate(n),load relative eccentricity(e)and the lateral support stiffness on the ultimate strengths of dual-angle cross combined section *** on above analysis,the design equations are proposed by using curve fitting *** is shown from comparison between test results,finite element analysis and related specifications that the ultimate strength from theoretical formulas,proposed equations and finite element models are consistent with experiments results.

关键词： Double angle combined section experimental finite element analysis

High-efficiency quaternary polymer solar cells enabled with binary fullerene additives to reduce nonfullerene acceptor optical band gap and improve carriers transport

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Science China Chemistry 2018年第12期61卷 1609-1618页

作者： Weiping Li Dong Yan Feng Liu Thomas Russell Chuanlang zhan Jiannian Yao eijing national Laboratory for Molecular Sciences CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Department of Physics and Astronomy and Collaborative Innovation Center of IFSA (CICIFSA) Shanghai Jiaotong University Shanghai 200240 China Department of Polymer Science and Engineering Room A516 Conte Research Center University of Massachusetts Amherst120 Governors Drive Amherst MA 01003 USA University of Chinese Academy of Sciences Beijing 100049 China

The polymer/small-molecule electron donor and nonfullerene organic electron acceptor are of structural similarity with both donor and acceptor molecules consisting of polycyclic fused-ring backbone and being decorated with *** this study,we report that the introduction of binary fullerenes(C_(60)-/C_(70)-PCBM and C_(60)-/C_(70)-ICBA)into a nonfullerene binary system PBDB-T:ITIC reduces the polymer-nonfullerene acceptor intermixing,obtaining higher crystallinity with(100)crystal coherence length from 28 to 29–33 nm for the ITIC,and from 14 to 20–24 nm for the PBDB-T,and improved electron and hole mobilities ***,such a protocol reduces the ITIC optical band gap from 1.59 to 1.55 *** consequences,higher short-circuit current-density(17.8–18.4 vs.15.8 m A/cm^2),open-circuit voltage(0.92 vs.0.90 V)and fill-factor(0.72–0.73 vs.0.68)are simultaneously obtained,which ultimately afford higher efficient quaternary polymer solar cells with power conversion efficiencies(PCEs)up to 12.0%–12.8%comparing to the host binary device with 9.9%*** the polymer,ITIC,and ICBA/PCBM ternary blends,11%PCEs were *** use of PCBM leads to larger red-shifting in thin film absorption and external quantum efficiency(EQE)*** effect is more pronounced when ICBA:PCBM mixture is *** results indicate the size and shape of C_(60)and C_(70)as well as the substituent position of the second indene unit on C_(60)-/C_(70)-ICBA affect not only the blend morphology but also the electronic coupling in BHJ mixtures:the quaternary device performance increased in sequences of C_(70)-PCBM:C_(70)-ICBA→C_(70)-PCBM:C_(60)-ICBA→C_(60)-PCBM:C_(70)-ICBA→C_(60)-PCBM:C_(60)-*** resonant soft X-ray scattering(RSoXS)data indicated the most refined phase separation in the C_(60)-PCBM:C_(60)-ICBA based blend,corresponding to its best device function among the quaternary *** results indicate that the using of binary fullerenes as the acceptor add

关键词： quaternary bulk-heterojunction polymer solar cell nonfullerene acceptor fullerene-free fullerene

Enantioselectivity Tunable Gold-Catalyzed Intermolecular[3+2]Cycloaddition of n-Allenamides with nitrones

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Chinese Journal of Chemistry 2022年第12期40卷 1407-1412,I0002页

作者： Bing Xu zhan-Ming zhang Jie Han Guangxin Gu Junliang zhang Department of Chemistry Fudan University2005 Songhu RoadShanghai 200438China Department of Materials Science Fudan University2005 Songhu RoadShanghai 200438China Zhuhai Fudan Innovation Institute ZhuhaiGuangdong 519000China

A highly enantioselective gold-catalyzed intermolecular[3+2]cycloaddition of n-allenamides with nitrones was realized by the application of Ming-Phos M6 as a chiral *** enantiomers of the cycloadducts with opposite configuration could be obtained in high yields with high regio-and enantioselectivity by the employment of either diastereomer of the chiral *** acidic n—H bond(hydrogen bonding)of sulfinamide moiety of Ming-Phos and pentaflurophenyl substituent(fluorine effect)may play important roles in enhancement of enantioselectivity,that is,Ming-Phos is a multifunctional ligand in this transformation.

关键词： Gold Asymmetric catalysis Fluorine effect Cycloaddition Multifunctional ligand

Electrochemical behavior of C-(60) modified electrode in aqueous solutions

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Chinese Journal of Chemistry 1994年第2期12卷 117-122页

作者： SHI, zhan-Ling MAO, Yi-Ping TOnG, Wei JIn, Li-TongDepartment of chemistry, East China normal University, 3663 Zhong Shan Road (n), Shanghai 200062,China Department of chemistry East China Normal University 3663 Zhong Shan Road (N) Shanghai 200062 China

The construction of adsorptive type C60 modified electrode and its electrochemical reduction and oxidation behavior in aqueous solutions are described in this report. Four pairs of one-electron transfer reduction and oxidation cyclic voltammetry is obtained in aqueous solution containing 30% CH3Cn and 2% (C2H5)4nOH. It is reported in this paper that the C60 modified electrode also catalyzes the electrochemical reduction of dissolved oxygen in 40% DMF and 2% (C2H5)4nOH aqueous solution and this might open a new field for the potential applications of C60 in electrochemistry and electroaualytical chemistry.

关键词： C60 modified electrode electrochemistry.

Cucurbit[n]uril-based nanostructure construction and modification

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Chinese Chemical Letters 2024年第8期35卷 138-148页

作者： Lijun Mao Shuo Li Xin zhang zhan-Ting Li Da Ma School of Pharmaceutical Engineering&Institute for Advanced Studies Taizhou UniversityJiaojiang 318000China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsFudan UniversityShanghai 200438China

new fabrication method of nanostructures is of great importance for the applications of nanoscience and *** review summarizes cucurbit[n]uril(CB[n])-based nanostructure fabrication and modification *** strategies include the use of CB[n]s as building blocks and supramolecular crosslinkers to fabricate nanostructures,to surface modify nanostructures,and as gatekeepers to control the release of encapsulated *** nanostructures are used for drug delivery,bioimaging,chemical sensing,catalysis and other ***[n]s often play a vital role in the fabrication of these nanos-tructures,and the realization of the applications.

关键词： Cucurbit[n]uril nanostructure Host-guest interaction nanofabrication

Differences in nitrous oxide distribution patterns between the Bering Sea basin and Indian Sector of the Southern Ocean

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Acta Oceanologica Sinica 2014年第6期33卷 9-19页

作者： CHEn Liqi zhanG Jiexia zhan Liyang LI Yuhong SUn Heng College of Ocean and Earth Science Xiamen University Key Laboratory of Global Change and Marine-Atmospheric Chemistry of State Oceanic Administration Third Institute of OceanographyState Oceanic Administration

nitrous oxide （n2O） distribution patterns in the Bering Sea basin （BSB） and Indian Sector of the Southern Ocean （ISSO） were described and compared. In both sites, the waters were divided into four layers： surface layer, subsurface layer, n2O maximum layer, and deep water. Simulations were made to find out the most important factors that regulate the n2O distribution patterns in different layers of both sites. The results showed that in the surface water, n2O was more understaturated in the ISSO than the BSB. This phenom- enon in the surface water of ISSO may result from ice melt water intrusion and northeastward transport of the Antarctic surface water. Results of the rough estimation of air-sea fluxes during the expedition were （-0.34±0.07）-（-0.64±0.13） μmol/（m2·d） and （-1.47±0.42）-（-1.77±0.51） μmol/（m-2·d） for the BSB and the ISSO, respectively. Strongly stratified surface layer and temperature minimum layer restricted exchange across the thermocline. The n2O maximum existed in higher concentration and deeper in the BSB than the ISSO, but their contribution to the upper layer by eddy diffusions was negligible. In deep waters, a concentration difference of 5 nmol/L n2O between these two sites was found, which suggested that n2O production occurred during thermohaline circulation. n2O may be a useful tracer to study important large-scale hydrographic processes.

关键词： nitrous oxide Bering Sea basin Southern Ocean distribution

Model for RuhrstahI-Heraeus （RH） decarburization process

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Journal of Iron and Steel Research International 2018年第4期25卷 409-416页

作者： Dong-ping zhan Yang-peng zhang Zhou-hua Jiang Hui-shu zhang School of Metallurgy Northeastern University Shenyang 110819 Liaoning China Shenyang northeastern Institute of Metal Materials Co. Ltd. Shenyang 110108 Liaoning China School of Materials Science and Engineering Northeastern University Shenyang 110819 Liaoning China Metallurgical Engineering College Liaoning Institute of Science and Technology Benxi 117004 Liaoning China

A mathematical model was established to predict the carbon content of ultralow carbon steel in the Ruhrstahl-Heraeus （RH） process. The model was solved using the fourth-order Runge-Kutta method and assumed that the volume of steel partaking in the reaction depends on the decarburization mechanism. After analyzing the decarburization process using the proposed model, the following conclusions were drawn. First, the initial carbon and oxygen contents in the RH degasser should be stabilized in the range of （200-350） × 10^-6 and （500-700） × 10^-6, respectively. Second, in the initial stage, the pressure should be reduced as quickly as possible. Third, oxygen blowing should begin as early as possible when the forced decarburization is needed and the minimum oxygen flow rate should be 0.1923 m3/（t rain）. Finally, expanding the diameter of the snorkel tube from 480 to 600 mm clearly enhances the decarburization rate.

关键词： RH Model Carbon content Fourth-order Runge-Kutta Ultralow carbon steel Decarburization

Effect of Molecular Weight on Thermoelectric Performance of P3HT Analogues with 2-Propoxyethyl Side Chains

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 268-281页

作者：董得福 WAnG Wei zhan Chun LI Chenglong ZHOU Qisheng 肖生强 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

By replacing hexyl chains in poly(3-hexylthiophene)(P3HT)with 2-propoxyethyls,four poly(3-(2-propoxyethyl)thiophene)(P3POET)homopolymers with comparable polydispersity indexes(PDI)and regioregularities were prepared herein in addition with step increment of about 7 kDa on numberaverage molecular weight(M_(n))from around 11 to 32 kDa(accordingly denoted as P11k,P18k,P25k,and P32k).When doped in film by FeCl_(3)at the optimized conditions,the maximum power factor(PF_(max))increases greatly from 4.3μW·m^(-1)·K^(-2)for P11k to 8.8μW·m^(-1)·K^(-2)for P18k,and further to 9.7μW·m^(-1)·K^(-2)for P25k,followed by a slight decrease to 9.2μW·m^(-1)·K^(-2)for *** close Seebeck coefficients(S)at PF_(max)are observed in these doped polymer films due to their consistent frontier orbital energy levels and Fermi *** main contribution to this PF_(max)evolution thus comes from the corresponding conductivities(σ).Theσvariation of the doped films can be rationally correlated with their microstructure evolution.

关键词： conjugated polymer molecular weight microstructure thermoelectric performance

Sm-doped g-C_(3)n_(4)/Ti_(3)C_(2) MXene heterojunction for visible-light photocatalytic degradation of ciprofloxacin

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Chinese Chemical Letters 2021年第7期32卷 2155-2158页

作者： Mingchuan Yu Huanjing Liang Ruonan zhan Lei Xu Junfeng niu Research Center for Eco-environmental Engineering Dongguan University of Technology

A heterojunction of Sm-doped g-C_(3)n_(4)/Ti_(3)C_(2) MXene(SCn/MX)was constructed via prepolymerization and solid mixture-calcination *** modified g-C_(3)n_(4) presented a hollow porous seaweed-like shape which can increase its specific area and active *** SCn/MX composite,the optical properties,no matter optical absorption ability or separation performance of photo-induced electrons and holes,were *** them,Sm-doping may play an important role on transferring the photogenerated electrons to suppress their recombination,and Ti_(3)C_(2) MXene would broaden light absorption and further improve the carrier migration *** SCn/MX presented higher photocatalytic degradation efficiency(>99%)of cipro floxacin under visible light *** quenching experiments and electron spin-resonance spectroscopy confirmed that the dominated active materials were superoxide radical and *** degradation mechanisms of ciprofloxacin(CIP)over the SCn/MX were attacking of the active materials on the piperazine ring and quinolone ring,and the final products were CO_(2),H_(2)O and F^(-).

关键词： g-C_(3)n_(4) Sm-doped Ti_(3)C_(2)MXene Visible light photodegradation