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Exceptional Performance of 3D Additive Manufactured NiFe Phosphite Oxyhydroxide Hollow Tubular Lattice Plastic Electrode for Large-Current-Density Water Oxidization

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ENERGY & ENVIRONMENTAL MATERIALS 2024年第6期7卷 262-273页

作者： ding, liping Zhang, Lin Li, Gaoyuan Chen, Shuyan Yan, Han Tu, Haibiao Su, Jianmin Li, Qi Tang, Yanfeng Wang, Yanqing Nantong Univ Sch Chem & Chem Engn Nantong 226007 Peoples R China

In this article, we report a 3D NiFe phosphite oxyhydroxide plastic electrode using high-resolution digital light processing (DLP) 3D-printing technology via induced chemical deposition method. The as-prepared 3D plastic electrode exhibits no template requirement, freedom design, low-cost, robust, anticorrosion, lightweight, and micro-nano porous characteristics. It can be drawn to the conclusion that highly oriented open-porous 3D geometry structure will be beneficial for improving surface catalytic active area, wetting performance, and reaction-diffusion dynamics of plastic electrodes for oxygen evolution reaction (OER) catalysis process. Density functional theory (DFT) calculation interprets the origin of high activity of NiFe(PO3)O(OH) and demonstrates that the implantation of the -PO3 can effectively bind the 3d orbital of Ni in NiFe(PO3)O(OH), lead to the weak adsorption of intermediate, make electron more active to improve the conductivity, thereby lowing the transform free energy of *O to *OOH. The water oxidization performance of as-prepared 3D NiFe(PO3)O(OH) hollow tubular (HT) lattice plastic electrode has almost reached the state-of-the-art level compared with the as-reported large-current-density catalysts or 3D additive manufactured plastic/metal-based electrodes, especially for high current OER electrodes. This work breaks through the bottleneck that plagues the performance improvement of low-cost high-current electrodes.

关键词： 3D plastic electrode 3D printing induced chemical deposition large-current-density water oxidization NiFe phosphite oxyhydroxide EFFICIENT ELECTROCATALYST OXYGEN

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ON THE NONEXISTENCE OF NONTRIVIAL SMALL CYCLES OF THE μ FUNCTION IN 3x+ 1 CONJECTURE

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Journal of Systems Science & Complexity 2012年第6期25卷 1215-1222页

作者： Dengguo FENG Xiubin FAN liping ding Zhangyi WANG State Key Laboratory of Information Security Institute of SoftwareChinese Academy of Sciences Institute of Software Chinese Academy of Sciences

This paper studies the property of the recursive sequences in the 3x ＋ 1 conjecture. The authors introduce the concept of μ function, with which the 3x ＋ 1 conjecture can be transformed into two other conjectures： one is eventually periodic conjecture of the μ function and the other is periodic point conjecture. The authors prove that the 3x ＋ 1 conjecture is equivalent to the two conjectures above. In 2007, J. L. Simons proved the non-existence of nontrivial 2-cycle for the T function. In this paper, the authors prove that the μ function has nol-periodic points for 2 ≤ 1 ≤12. In 2005, J. L. Simons and B. M. M de Weger proved that there is no nontrivial/-cycle for the T function for 1 ≤68, and in this paper, the authors prove that there is no nontrivial l-cycle for the μ function for 2 ≤ 1≤ 102.

关键词： Diophantine equation eventual period periodic point 3x + 1 conjecture.

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基于三周期极小曲面的多孔结构力学性能研究

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机械制造与自动化 2024年第1期53卷 49-54页

作者：张曦丁力平吴沛豪南京航空航天大学机电学院江苏南京210016

针对设计多孔结构时难以直接预测其力学性能的问题,选取三周期极小曲面中的Schwarz_P曲面,采用选区激光熔化技术制备不同结构参数的Schwarz_P结构;通过压缩试验研究其力学性能,建立Schwarz_P结构的结构参数与力学性能之间的关系模型。... 详细信息

针对设计多孔结构时难以直接预测其力学性能的问题,选取三周期极小曲面中的Schwarz_P曲面,采用选区激光熔化技术制备不同结构参数的Schwarz_P结构;通过压缩试验研究其力学性能,建立Schwarz_P结构的结构参数与力学性能之间的关系模型。试验结果表明:建立的模型拟合优度在98%以上,采用该模型预测的力学性能与实测值基本一致,在设计多孔结构时可直观地预估其力学性能。

关键词：三周期极小曲面多孔结构力学性能选区激光熔化

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Immobilization of pyrene on quartz plate surface via a flexible long spacer and its sensing properties to dicarboxylic acids

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Science China Chemistry 2004年第3期47卷 240-250页

作者： GAO Lining FANG Yu Lü Fengting ding liping School of Chemistry and Materials Science Shaanxi Normal University Xi'an 710062 China School of Chemistry and Materials Science Shaanxi Normal University Xi'an 710062 China School of Chemistry and Materials Science Shaanxi Normal University Xi'an 710062 China School of Chemistry and Materials Science Shaanxi Normal University Xi'an 710062 China

A novel photo-induced luminescence film has been prepared by immobilizing pyrene on quartz plate surface via a flexible long spacer, 1,3-diaminopropane and 3-glycidoxypropyl trimethoxysilane. The film shows combined monomer and excimer emission of pyrene in both wet and dry states. Steady-state and time-resolved fluorescence emission meas-urements demonstrated that the excimer emission mainly came from direct excitation of ground state dimers, and/or monomers in aggregated state. Classical Birks?scheme plays little role in the formation of the excimers. The structures of the excimers formed during the excitation are complex. Both standard excimer of sandwich-like fully overlapped structure and distorted ex-cimer of partially overlapped structure exist in the excited state of the fluorophore. The emission of the film is sensitive to the presence of dicarboxylic acids, including ethanedioic acid, malonic acid, succinic acid, etc. The emission in the monomer and excimer region increases along with increasing the concentration of the dicarboxylic acids. The time needed for the emission to reach equilibrium depends on the nature of the acids. It has been shown that the longer the chain length of the acids, the more the time needed. This observation is explained by considering the conformational reorganization of the immobilized pyrene due to insertion of the dicarboxylic acids into the space between neighboring spacers. Experimental results from similar studies using formic acid and acetic acid are in support of this explanation. Furthermore, the response of the film to dicarboxylic acids is reversible.

关键词： pyrene, fluorescence, dicarboxylic acid, sensing property.

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Highly rectified ion transport through 2D WSe2/MoS2 bi-layered membranes

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Chinese Chemical Letters 2018年第6期29卷 892-894页

作者： Yaping Feng liping ding Danyan Ji Lili Wang Wei Guo CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China Center for Physiochemical Analysis and Measurement Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

Two-dimensional（2 D） nanofluidic systems provide a highly efficient way to integrate a huge amount of cascading lamellar nanofluidic channels into macroscopic membrane materials for practical use in, for example, molecular separation, water treatment, and energy storage. Besides the well-studied graphenebased materials, other 2 D nanomaterials, such as the transition metal dichalcogenides（TMDCs）, are expected as promising alternatives. Here, we report strong ionic current rectification（ICR） effect found in Mo S2/WSe2 bi-layered membrane structure. The preferential direction for ion transport is from the WSe2 layers to the Mo S2 layers. The maximum ICR ratio approaches 35 at intermediate electrolyte concentration. More intriguingly, by exchanging the deposition order of the Mo S2 and WSe2 layers, the observed ICR effect can be reversed. These evidences justify that the highly rectified ion transport phenomenon results from the asymmetry in the reconstructed 2 D layered materials. This work is the first discovery of ICR effect in 2 D nanofluidic heterostructures, and provides further opportunities for innovative nanofluidic devices and materials.

关键词： Ion transport Rectification 2D materials Nanofluidics Heterostructure

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Object-oriented Modular Model Library for Distillation

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Chinese Journal of Chemical Engineering 2013年第6期21卷 600-610页

作者： CHEN Chang ding Jianwan CHEN liping CAD Center Huazhong University of Science and Technology Wuhan 430074 China

For modeling and simulation of distillation process, there are lots of special purpose simulators along with their model libraries, such as Aspen Plus and HYSYS. However, the models in these tools lack of flexibility and are not open to the end-user. Models developed in one tool can not be conveniently used in others because of the barriers among these simulators. In order to solve those problems, a flexible and extensible distillation system model library is constructed in this study, based on the Modelica and Modelica-supported platform MWorks, by the object-oriented technology and level progressive modeling strategy. It supports the reuse of knowledge on different granularities： physical phenomenon, unit model and system model. It is also an interface-friendly, accurate, fast PC-based and easily reusable simulation tool, which enables end-user to customize and extend the framework to add new functionality or adapt the simulation behavior as required. It also allows new models to be composed programmatically or graphically to form more complex models by invoking the existing components. A conventional air distillation column model is built and calculated using the library, and the results agree well with that simulated in Anen Plus.

关键词： distillation system object-oriented Modelica/MWorks level progressive model reuse

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鸡新城疫-传染性支气管炎-禽流感(H9亚型)-鸡滑液囊支原体四联灭活疫苗免疫效果研究

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中国家禽 2024年第8期46卷 61-68页

作者：沈丹丹李双双周欣李厚伟丁丽萍姬星宇张先锋商丘美兰生物工程有限公司河南商丘476200 河南普华基因科技有限公司河南郑州450045 河南农业大学河南郑州450045

为探讨制备的鸡新城疫-传染性支气管炎-禽流感(H9亚型)-鸡滑液囊支原体四联灭活疫苗(以下简称新支流滑四联灭活疫苗)免疫效果,试验采用新城疫病毒(NDV)La Sota株接种BHK-21-sc悬浮细胞,用易感鸡胚增殖传染性支气管炎病毒(IBV)M41株,H9... 详细信息

为探讨制备的鸡新城疫-传染性支气管炎-禽流感(H9亚型)-鸡滑液囊支原体四联灭活疫苗(以下简称新支流滑四联灭活疫苗)免疫效果,试验采用新城疫病毒(NDV)La Sota株接种BHK-21-sc悬浮细胞,用易感鸡胚增殖传染性支气管炎病毒(IBV)M41株,H9亚型禽流感病毒(AIV)ML01株接种MDCK-sc悬浮细胞,用改良Frey氏培养基发酵培养鸡滑液囊支原体(MS)ML-MS1株,收获抗原液,制备新支流滑四联灭活疫苗,并对疫苗进行安全性和效力测定;以0.05、0.1、0.3 mL/只的剂量接种30日龄SPF鸡,免疫后7、14、21 d采血测定NDV HI和AIV(H9亚型)HI抗体,并于免疫后21 d进行NDV和AIV攻毒;30日龄SPF鸡首免H120株,免疫后21 d采血测定IBV HI抗体效价,并以0.05、0.1、0.3 mL/只的剂量进行二免,免疫后7、14、21、28 d采血测定IBV HI抗体;以0.05、0.1、0.3 mL/只的剂量接种30日龄SPF鸡,免疫后7、14、21、30 d采血测定MS ELISA抗体,并于免疫后30 d进行MS攻毒。结果显示:制备的新支流滑四联灭活疫苗安全性良好、效力合格;免疫后21 d NDV HI效价为6.6~8.8 log2,AIV HI效价为7.0~9.7 log2;免疫后28 d IBV HI效价为5.6~7.8 log2,且二免是首免的3.2~14.9倍;免疫后30 d MS ELISA效价为3 164~6 847;攻毒试验结果显示,0.05 mL/只剂量组对ML-MS1攻毒保护率为80%(8/10),其余组均为100%(10/10)保护。研究表明,新支流滑四联灭活疫苗对SPF鸡安全、有效,以0.1 mL/只剂量免疫SPF鸡可获得较好的免疫效果。

关键词：新城疫传染性支气管炎 H9亚型禽流感滑液囊支原体灭活疫苗免疫效果

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Estimation of Endocarpon pusillum Hedwig carbon budget in the Tengger Desert based on its photosynthetic rate

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Science China(Life Sciences) 2013年第8期56卷 848-855页

作者： ding liping ZHOU QiMing WEI JiangChun State Key Laboratory of Mycology Institute of Microbiology Chinese Academy of Sciences University of Chinese Academy of Sciences

This study investigated the photosynthetic rate of the lichen Endocarpon pusillum at the Chinese Academy of Sciences Shapotou Desert Research Station and estimated its annual contribution to the carbon budget in the ecosystem. The software SigmaPlot 10.0 with "Macro-Area below curves" was used to calculate the carbon fixation capacity of the lichen. The total carbon budget (ΣC) of the lichen was obtained by subtracting the respiratory carbon loss (ΣDR) from the photosynthetic carbon gain (ΣNP). Because water from precipitation plays an important role in photosynthesis in this ecosystem, the annual carbon budget of E. pusillum at the station was estimated based on the three-year average precipitation data from 2009 to 2011. Our results indicate that the lichen fixes 14.6 g Cm-2 annually. The results suggest that artificial inoculation of the crust lichen in the Tengger Desert could not only help reduce the sand and dust storms but also offer a significant carbon sink, fixing a total of 438000 t of carbon over the 30000 km2 of the Tengger Desert. The carbon sink could potentially help mitigate the atmospheric greenhouse effect. Our study suggests that the carpet-like lichen E. pusillum is an excellent candidate for "Bio-carpet Engineering" of arid and semi-arid regions.

关键词： crust organisms carpet-like lichen carbon income carbon loss carbon sink

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Carbon Black Industry Still Faces Crises Despite Recovery

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China Chemical Reporter 2010年第16期21卷 28-29页

作者： ding liping

According to statistics, in the first eightmonths of 2009, the output and sales volumeof carbon black fell by 18% and 12%year on year, respectively, in *** though, the output and salesvolume of carbon black began to *** November and December,they grew *** 2002, China’s investment in thecarbon black industry has grown rapidly,and the country’s new black carbon capacityhas increased by about 450 000 t/a *** recent years, the single-linecapacity of new carbon black projects wasmostly between 20 000 t/a and 40 000 t/*** to the impact of the financial crisis, in2008 the construction of new projects witha combined capacity of nearly 500 000

关键词： Still rubber downstream Shandong quarter Hangzhou

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Structure-fluorescence relationships in pyrrole appended o-carborane crystalline materials

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Chinese Chemical Letters 2022年第5期33卷 2532-2536页

作者： Dan Wang Gang Wang Ke Liu Jing Li Zhaolong Wang Jing Liu liping ding Rong Miao Yu Fang Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710062China

Based on three rationally designed pyrrole-appended o-carborane derivatives,we present that fluores-cence properties of crystalline materials are highly dependent on intermolecular interaction and steric *** the three molecules are similar in structure,single crystals of the three compounds showed obvious difference in molecular stacking and fluorescence *** studies indicate that fluorescence quantum yields,thermo-response as well as mechano-response are highly dependent on intermolecular interaction and steric *** the three crystalline materials,the CB-NMe crys-tals with weaker intermolecular interaction and looser molecular packing showed superior fluorescence quantum yield and temperature ***,surface temperature detection strip with favor-able reversibility is prepared by doping CB-NMe into the *** addition,the CB-NMe aggregates can be used for monitoring bovine serum albumin(BSA)denaturation,as temperature response of the aggregates can be reversed when co-assembled with BSA.

关键词： Fluorescence o-Carborane crystal Steric hinderance Molecular packing Temperature sensing

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