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Use of additive Based on Non-Timber Forest Products for the Ecological Stabilization of Raw Earth:Case of the Parkia Biglobosa Nut and Vitellaria Paradoxa

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Journal of Renewable Materials 2023年第12期11卷 4143-4160页

作者： Bio Chéïssou Koto Tamou Jean-Michel Mechling Crespin Prudence Yabi Gildas EdjrossèF.Godonou Edmond Codjo Adjovi Mohamed Gibigaye AndréLecomte Nicolas Brosse L2EGC-Laboratory of Studies and Tests in Civil Engineering University of SciencesTechnologyEngineeringand MathematicsAbomeyBenin IJL-Jean Lamour Institute University of LorraineNancyFrance LEMA-Laboratory of Energetics and Applied Mechanics University of Abomey-CalaviAbomey-CalaviBenin LERMAB-Study and Research Laboratory on Wood Material University of LorraineNancyFrance

The housing sector today uses elaborate materials such as cement,iron,sand,often prohibitively expensive and whose production generates a strong environmental impact(scarcity of resources,transport,greenhouse gas greenhouse,etc.).In order to meet the challenges of sustainable development,earth construction is experiencing a resurgence of interest these *** its many advantages,raw earth material has drawbacks,in particular its low mechanical resistance and its loss of geometric characteristics in the face of water,which slow down its *** part of this study,the mechanical characteristics and durability of raw earth were improved by using residual water from the processing of Parkia Biglobosa(nere)and Vitellaria Paradoxa(shea)nuts in order to optimize its use for the construction of modern *** this end,the decoctions resulting from the artisanal transformation of the nut of the Parkia Biglobosa into African mustard and of the Vitellaria Paradoxa into shea butter were added to the raw earth according to volume proportions of 25%,50%,75%and 100%of the aqueous solution to obtain the projected ***,mechanical characterization and durability tests were carried out on the composites *** results revealed that the decoctions of Vitellaria Paradoxa and Parkia Biglobosa improve the compressive strength of the material by up to 90%and 260%,***,these decoctions improved the resistance to water penetration of the 100%additive composite by 1.5 times for Vitellaria Paradoxa and 5 times for Parkia *** study shows that it is possible to use decoctions as raw earth stabilizers to build modern,ecological buildings at lower energy ***,more in-depth studies on surface wettability and long-term durability are planned to better characterize the geomaterial.

关键词： Raw earth organic additive adobe Vitellaria Paradoxa Parkia Biglobosa durability

Multi-site anchoring of single-molecule for efficient and stable perovskite solar cells with lead shielding

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Journal of Energy Chemistry 2023年第12期87卷 390-399,I0010页

作者： Zhengyan He Shufang Zhang Yushuang Gao Quanming Geng Xiangrui Jia Shuo Yang Zhiqiang Zhang Yanpu Zheng Yanqiang Hu Changlin Yao Qi Zhang School of Physics and Photoelectronic Engineering Ludong UniversityYantai 264025ShandongChina College of Chemistry and Chemical Engineering Nantong UniversityNantong 226001JiangsuChina

The emergence of perovskite solar cells(PSCs) has greatly promoted the progress of photovoltaic *** rapid development of PSCs has been driven by the advances in optimizing perovskite films and their adjacent ***,the polycrystalline perovskite layers in most highly efficient PSCs still contain various defects that greatly limit photovoltaic performance and stability of the ***,we introduce a multifunctional additive ethylene diamine tetra methylene phosphonic sodium(EDTMPS) with multiple anchor points into the precursor of perovskite to improve the efficiency and stability of PSCs and provide in-situ protection of lead *** addition of EDTMPS acts as a crystal growth controller and passivation agent for perovskite films,thereby slowing down the crystallization rate of the film and obtaining high-quality perovskite *** study also provides an insight into how the modifier modulate the interfacial energy level arrangement as well as affect transfer of charge carriers and their recombination under photoinduced *** a result,the power conversion efficiency(PCE) of single subcell with a working area of 0.255 cm^(2) increases significantly from 20.03% to 23.37%.Moreover,we obtained a PCE of 19.16% for the 25 cm^(2) ***,the unencapsulated EDTMP-modified PSCs exhibit better operational and thermal stability,as well as in-situ absorption of leaked lead ions.

关键词： Perovskite solar cell organic additive Defect passivation Crystallization process Lead leakage

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Effect of Short Chain Alcohols upon Viscosity of TTAB Solution

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Chinese Journal of Chemical Physics 2008年第2期21卷 169-173页

作者： Yun-fei Yan Hua-zhen Li Hai-yang Yang Jia-sheng Qian Ping-ping Zhu Ping-sheng He Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 China

The effect of ethanol （C2H5OH）, propanol （C3H7OH）, and butanol （C4H9OH） upon the viscosity of tetradecyltrimethylammonium bromide （TTAB） solution in the presence or absence of KBr at 30℃was investigated, where the surfactant concentration CS is kept constant. In the absence of KBr, the relative viscosity ηr of TTAB solution increases linearly with the alcohol concentration CA, indicating that the alcohols do not promote micelle formation of TTAB. In the presence of KBr, ηr linearly decreases with CA for C2H5OH, but it exhibits a maximum with increasing CA for C3H7OH or C4H9OH. The facts reveal that C2H5OH or C4H9OH promotes the micelle formation of TTAB. A possible explanation is that the hydrophobicity of the mieellar interior is enhanced by KBr, so that C2H5OH or C4H9OH can dissolve in micelle and promotes micelle formation. In the presence of KCl, which is less efficient in promoting the micelle formation of cationic surfactant, both C3H7OH and C4H9OH have only a slight effect on the micelle formation. In contrast, due to the hydrophilicity, C2H5OH cannot dissolve in micelles in the presence of KBr or KCl.

关键词： Relative viscosity Cationic surfactant organic additive Hydrophobic interaction

Enantiomeric Separation of Antidepressant Trimipramine by Capillary Electrophoresis Combined with Electrochemiluminescence Detection in Aqueous-organic Media

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Chemical Research in Chinese Universities 2011年第1期27卷 34-37页

作者： YU Cai-xia YUAN Bai-qing YOU Tian-yan State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China Graduate School of Chinese Academy of Sciences Beijing 100049 P. R. China

The antidepressant trimipramine（Tri） enantiomers were successfully separated by capillary electrophoresis（CE） coupled with electrochemiluminescence（ECL） detection in aqueous-organic media. A dual cyclodextrin（CD） system combining β-CD and hydroxypropyl-β-cyclodextrin（HP-β-CD） was used as chiral selector. Acetonitrile（ACN） was added to the running buffer to improve the separation efficiency, detection sensitivity and repeatability. The method was also successfully applied to the chiral separation of Tri in spiked human urine sample.

关键词： Capillary electrophoresis Electrochemiluminescence Trimipramine Enantioseparation organic additive

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用正电子素探测镀镍添加剂的亲电子能力

厦门大学学报(自然科学版) 1987年第4期 430-433页

作者：方江陵姚士冰周绍民厦门大学物理学系厦门大学物化学系厦门大学物理化学研究所

本实验分别测定五种镀镍添加剂与正电子素在水溶液中络合反应的表观生成速度常数Kobs,并以此作为衡量它们的亲电子能力的标准.本文描述正电子素与有机分子络合反应机理,并指明所探测的是吸引单个电子的能力.

关键词： Positron annihilation Positronium Electron affinity organic additive

Effects of Gelatin on Electrodeposited of Zn-Sn Films

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Journal of Rare Earths 2006年第S2期 260-262页

作者：王征安茂忠胡旭日徐树民 Department of Applied Chemistry Harbin Institute of Technology Zhaoyuan Jinbao Electronic Co. Ltd.

Co-deposition of Zn-Sn on copper films with an organic additive of gelatin is compared with that without an additive. The study was based on an electrochemical investigation using linear sweep voltammetry and cyclic voltammetry measurements, coupled with scanning electron microscopy and X-ray dispersive analysis of Zn-Sn deposits. The composition of the Zn-Sn alloy was determined in order to study the influence of gelatin. The results indicate that the gelatin strongly influences the cathodic process and the morphology, and it decreases the Sn content in the deposits. It was noted that electrodeposition with gelatin results in smoother, more compact, and more leveled deposits than without it.

关键词： Zn-Sn alloy electrodeposition organic additive