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MOF-derived 1D CGO Cathode for Efficient Solid Oxide Electrolysis Cells

Chemical Research in Chinese Universities 2024年第4期40卷 737-746页

作者： TIAN Jiayu SUN Qi LIU Pei DAI Jiuyi CAI Yezheng XU Miao YE Tian-Nan chen jie-sheng Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai200240P.R.China Zhangjiang Institute for Advanced Study Shanghai Jiao Tong UniversityShanghai200240P.R.China State Key Laboratory of Space Power-sources Shanghai Institute of Space Power-sourcesShanghai200245P.R.China

Solid oxide electrolysis cells(SOECs)provide a promising way for converting renewable energy into chemical ***,NiO/CGO(nickel-gadolinium doped ceria)cermet has shown its excellent properties in ionic and electronic conductivity under reducing ***,we developed a novel 1D NiO/CGO cathode through a cerium metal-organic framework(MOF)derived *** cathode’s 1D nanostructure integrated with a microchannel scaffold facilitates enhanced mass transport,providing vertically aligned pathways for CO_(2)and H_(2)O ***,the 1D framework increases the number of interfacial sites and reduces ion diffusion distances,thereby simplifying electron/ion ***,this advanced cathode achieved a significant breakthrough in SOEC performance,maintaining efficient CO_(2)and H_(2)O electrolysis at an extraordinary current density of 1.41 A/cm^(2)at 1.5 V and excellent stability over 24 h at 850℃.The enhanced performance of this newly developed cathode not only achieves a remarkable 100%improvement compared to those of NiO/CGO cathodes with varying geometrical configurations but also surpasses those of commercial NiO/CGO catalysts by an outstanding 40%when tested under identical *** development of the 1D NiO/CGO enhances the efficiency and durability of ceramic cathodes for CO_(2)and H_(2)O co-electrolysis in SOECs and improves the scalability and effectiveness of SOECs in renewable energy applications.

关键词： Cerium metal-organic framework One-dimensional structure Gadolinium doped ceria CO_(2)activation co-Electrolysis

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A New Organo-templated Layered Zincophosphate Synthesized from a Solvothermal System Containing Racemic 1,2-Diaminopropane

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Chemical Research in Chinese Universities 2002年第4期18卷 375-379页

作者： chen Wei YUAN Hong-ming JIANG Yu-sheng HUO Hua chen jie-sheng State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchun 130023P.R.China

A new layered zincophosphate was synthesized under solvothermal conditions by employing racemic 1,2-diaminopropane as the structure-directing agent. The structure of the compound was solved by means of single-crystal X-ray diffraction analysis. It crystallized in the monoclinic space group P2_1/c (No. 14) with a= 1.047 0(3) nm, b=0.787 31(18) nm, c=0.662 68(16) nm, β=103.120(5)°, V=0.532 0(2) nm 3 and Z=4. The structure is made up of anionic zincophosphate sheets stacked in an AAAA sequence. The individual sheet contains three- and four-membered rings and the infinite Zn-O-Zn chains can also be envisaged in the sheet. The charge-balancing diprotonated racemic 1,2-diaminopropane cations are sandwiched between the layers, whereas the inorganic layers are stabilized by strong H-bonds formed between the N atoms of the amine and the O atoms in the inorganic sheets.

关键词： Layered zincophosphate X-ray diffraction Crystal structure Racemic system

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Solvothermal Synthesis and Crystal Structure of Zn(en)_3B_5O_7(OH)_3

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Chemical Research in Chinese Universities 2006年第3期22卷 271-273页

作者： HE Yi chen Wei YANG Jin XI Chun-yu chen jie-sheng State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

A new polyborate containing ehiral metal-complex Zn（en）3 B5O7（OH）3, where en = ethylenediamine, was synthesizedunder solvothermal conditions and structurally characterized by means of X-ray diffraction analysis. Crystal data： Zn（en）3 B5O7（OH）3, monoclinic, space group P21/c, a =0.8532（72） nm, b =2.3340（5） nm, c = 0.9526（92） nm, β =107. 04（3）°, Z=4, V=1.8140（6） nm^3, Dc =1.694 g/cm^3, p=1.416 mm^-1, F（000） = 960, GOF = 1. 020, R =0. 0276, Rw =0. 0828. There is a chiral Zn（en）3^2＋ complex cation and an isolated B5O7（OH）3^2- group in a Zn（en）3 B5O7（OH）3 molecule. The enantiomer of the chiral complex cation is separated orderly as ,4 and A configurations in the compound and the borate group consists of two B303 cycles linked through a bridging boron atom.

关键词： Solvothermal synthesis Crystal structure Chiral metal-complex Borate compound

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α-环糊精在微泡含气饮料中的应用

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饮料工业 2024年第2期27卷 52-58页

作者：杨薇陈杰圣周一鸣上海应用技术大学香料香精技术与工程学院上海201418

微泡含气饮料作为一种新型的含气碳酸饮料广受消费者欢迎和喜爱,但存在气泡分布不均匀,产品持气性、稳定性不均一等问题。本实验通过比较不同pH溶液体系下α-环糊精添加量及充气量对产品气泡形态与持气性效果,旨在评估α-环糊精对微泡... 详细信息

微泡含气饮料作为一种新型的含气碳酸饮料广受消费者欢迎和喜爱,但存在气泡分布不均匀,产品持气性、稳定性不均一等问题。本实验通过比较不同pH溶液体系下α-环糊精添加量及充气量对产品气泡形态与持气性效果,旨在评估α-环糊精对微泡含气饮料的稳定性影响,以确定其在改善微泡含气饮料质量方面的潜力。研究结果表明,α-环糊精能够降低气泡表面张力,显著减小气泡粒径大小,并使微泡更均匀地分布在产品中。同时,α-环糊精添加量、CO_(2)充气量与产品的持气性呈正相关,随着α-环糊精添加量、CO_(2)充气量的增加,可以显著改善微泡含气饮料的稳定性。在微泡含气饮料应用中,添加α-环糊精与CO_(2)气体小分子形成包合物,能够提供丰富细腻的微气泡,延长持气时间。本研究为进一步探索α-环糊精在微泡含气饮料中的应用奠定了理论基础。

关键词：含气饮料微泡 α-环糊精持气性稳定性

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Encapsulation and Fluorescence of the Functional Supramolecular Material Between MCM-41 and Rh6G

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Chemical Research in Chinese Universities 2000年第3期16卷 263-265页

作者： ZHANG Mai-sheng ZU Yi-gan YANG Yan-sheng chen jie-sheng FENG Shou-hua XU Ru-ren School of Chemical and Engineering Zhongshan UniversityGuangzhou 510275P.R.China Department of Chemistry Jilin UniversityChangchun 130023P.R.China

Molecular sieves encapsulated organic dyes and metal chelates were reviewed and luminescent behavior of some organic compounds in molecular sieves was studied. Rh6G is one kind of organic dye which is widely used in many fields such as optics, spectroscopy, and laser techniques. It has a high stability and an efficiency quantum yield as an excellent fluorescent compound. The encapsulation and the fluorescence of the functional supramolecular material of MCM-41, which was synthesized by means of microwave radiation method (MRM), encapsulated Rh6G was reported.

关键词： MCM 41 Microwave radiation Rhodamine 6G Supramolecular material Fluorescence

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Novel high-safety aeroengine performance predictive control method based on adaptive tracking weight

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Chinese Journal of Aeronautics 2024年第7期37卷 352-374页

作者： Qian chen Hanlin sheng jie ZHANG Jiacheng LI College of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Increasing attention has been attracted to the dynamic performance and safety of advanced performance predictive control systems of the next-generation *** latest research demonstrates that Subspace-based Improved Model Predictive Control(SIMPC)can overcome the difficulty in solving the predictive model in MPC/NMPC ***,applying constant design parameters cannot maintain consistent control effects in all ***,the designed system relies too much on sensor-measured data,and thus it is difficult to thoroughly validate the safety of the system because of its high *** means that any potential hardware/software faults will endanger the ***,this paper first presents a novel nonlinear mapping relationship to adaptively tune the tracking weight online with the change of Power Lever Angle(PLA)and real-time relative tracking ***,without introducing additional design parameters,an Adaptive Tracking Weight-based SIMPC(ATW-SIMPC)controller is designed to improve the control performance in all operating states ***,a Primary/Backup Hybrid Control(PBHC)strategy with the ATW-SIMPC controller as the primary system and the traditional speed(Nf)controller as the backup system is proposed to ensure *** designed affiliated switching controller and the real-time monitor therein can be used to realize reasonable and smooth switching between primary/backup systems,so as to avoid bump *** PBHC system switches to the Nf controller when the ATW-SIMPC controller is wrong because of potential hardware/software faults;otherwise,the ATW-SIMPC controller keeps acting on the *** main results prove that the ATW-SIMPC controller with the optimal nonlinear mapping relationship,compared with the existing SIMPC controller,uplifts the dynamic control performance by 32%and reduces overshoots to an allowable limit,resulting in a better control effect in full *** comparison results consistently i

关键词： Aeroengine Model predictive control Hybrid system Adaptive weight Safety

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Facile Preparation and Cellular Imaging of Photoluminescent Carbogenic Nanoparticles Derived from Defoliations

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Chemical Research in Chinese Universities 2013年第1期29卷 189-192页

作者： XIU Yang ZHOU Yan GAO Qian chen jie-sheng LI Guo-dong State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry National Engineering Laboratory for AIDS Vaccine College of Life Science Jilin University Changchun 130012 P. R. China" School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China

In the past two decades, photoluminescent semiconductor quantum dots（QDs） have received intensive attention for a variety of promising properties and applications, especially for their potential application in cellular imagingE. QDs with high quantum yield have been prepared based on cad mium（zinc） selenide（sulfide） and related coreshell compo sites. However, the release of Cd2＋, S2 and Se2 ions in evitably causes serious health and environmental concerns. Therefore, many efforts have been devoted to developing be nign alternatives with enhanced photoluminescence, such as silicon nanoparticles and nanowires. Carbonbased nanomaterials, including carbon nano tubes（CNTs） and carbogenic nanoparticles（CNPs）, represent an exciting new type of alternative to the aforementioned QDs with high quantum yield. CNPs are superior to QDs in chemi cally inertness, biocompatibility and photostability. After the report on the photoluminescence of carbon dots prepared by laser ablation with graphite as carbon sourcetill, several strate gies have been developed for the preparation of luminescent CNPs. For instance, luminescent CNPs were prepared by Liu et al.021 with candle soot via oxidative acid treatment, and the resulting CNPs with different emission colors were isolated by means of electrophoretic separation. Hu et al. employed an improved onestep approach for the synthesis of luminescent CNPs by laser irradiating a suspension of carbon materials in organic solvents of diamineterminated oligomeric poly（ethylene glycol）（PEG1500N）. More recently, luminescent carbogenic dots have been obtained by Peng and Travas via surface passivation of carbogenic dots in an aqueous solution with carbohydrates as the starting materials. Carbogenic nano particlesloaded magnesiumaluminophosphate solid phosphors.

关键词： Carbogenic nanoparticle Photoluminescence Cellular imaging

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Propylene Epoxidation by Dioxygen over Catalyst Copper-loaded TiO_2

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Chemical Research in Chinese Universities 2011年第5期27卷 866-869页

作者： JIN Qiang-wei WANG Kai-xue WANG Jian-qiang LI Xiao-bei chen jie-sheng School of Chemistry and Chemical Engineering Shanghai Jiaotong University Shanghai 200240 P R. China Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 P. R. China

A copper-TiO2 based catalyst（Cu-OH-Cl-TiO2） was prepared through a slurry impregnation approach and the catalyst was found to be active and selective for the epoxidation of propylene by dioxygen. With a feed gas of 10% C3H6, 10% O2 and 80% N2 at a gas hourly space velocity（GHSV） of 4000 h-1, a propylene conversion of 4.8% and a propylene oxide（PO） selectivity of 38.9% were achieved over the obtained Cu-OH-Cl-TiO2 catalyst at a reaction temperature of 500 K. It revealed that Cu2＋ provided by crystalline Cu2（OH）3Cl plays a key role in catalytic conversion of propylene to PO.

关键词： Propylene epoxidation Selectivity Cu-OH-Cl-TiO2 Dioxygen

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Transgenic Paulownia Expressing shiva-1 Gene Has Increased Resistance to Paulownia Witches＇ Broom Disease

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Journal of Integrative Plant Biology 2005年第12期47卷 1500-1506页

作者： Tao DU Yao WANG Qin-Xue HU jie chen sheng LIU Wen-Jin HUANG Mu-Lan LIN Wuhan Institute of Virology the Chinese Academy of Sciences Wuhan 430071 China

Stem segments from diseased Paulownia tomentosaXP, fortunei and leaves from healthy control were transformed with the expression vector p438PRSI via Agrobacterium tumefaciens. The p438PRSI vector contained shiva-1 gene, which encodes an antibacterial peptide under the control of a CaMV35S promoter. The regenerated plants from transformed explants were planted in a greenhouse and nursery. PCR and Southern blotting analysis showed that the shiva-1 gene was successfully integrated into the Paulownia genome. Transcription of the integrated shiva-1 gene was confirmed by RT-PCR. Bioassay in the green house and phytoplasma DNA-dot blotting demonstrated that resistance to Paulownia witch＇s broom disease （PWB） increased significantly in shiva-l-transgenic Paulownia. Further investigations indicated that higher Shiva- 1 expression correlated with fewer phytoplasma and less symptoms in diseased transgenic Paulownia. Together, our findings strongly suggest that breeding shiva-1-Paulownia is an effective strategy to control PWB disease.

关键词： Agrobacterium tumefaciens Paulownia Paulownia witch's broom phytoplasma shiva-1.

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树豆酮酸A可减轻db/db小鼠非酒精性脂肪肝损伤

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中国生物化学与分子生物学报 2024年第3期40卷 373-382页

作者：王一凡吕厚星李志阳代云莉冯昭卫陈佳佳陈圣杰王建塔肖瑛贵州省常见慢性疾病发病机制及药物研究重点实验室贵州医科大学病理生理学教研室贵阳550025 贵州省化学合成药物研发利用工程技术研究中心贵阳550004

非酒精性脂肪性肝病(nonalcoholic fatty liver disease,NAFLD)是指肝中储存过多的脂肪,与肥胖、胰岛素抵抗、2型糖尿病(type-2 diabetes mellitus,T2DM)、血脂异常等代谢综合征密切相关。肝纤维化是NAFLD进一步发展为肝细胞癌(hepatoce... 详细信息

非酒精性脂肪性肝病(nonalcoholic fatty liver disease,NAFLD)是指肝中储存过多的脂肪,与肥胖、胰岛素抵抗、2型糖尿病(type-2 diabetes mellitus,T2DM)、血脂异常等代谢综合征密切相关。肝纤维化是NAFLD进一步发展为肝细胞癌(hepatocellular carcinoma,HCC)的关键过程,减少肝内的脂肪积累,从而延缓或阻止NAFLD向纤维化的进展是治疗的关键。树豆酮酸A(cajanonic acid A,CAA)在2型糖尿病中能够有效改善胰岛素抵抗,发挥降糖减脂作用。本研究旨在探究CAA对NAFLD肝损伤的保护作用。通过采用db/db自发性NAFLD小鼠模型,将db/db小鼠分为NAFLD组和CAA给药组,CAA组予50 mg/(kg·d)灌胃给药,同期C57BL小鼠作为正常对照组(NC组),每组6只。小鼠生化指标检测和组织病理染色发现,CAA干预可有效缓解db/db小鼠的糖脂代谢紊乱、肝功能损伤(P<0.05)及肝脂肪变性和减少脂质沉积(P<0.05)。ELISA法结果显示,经过CAA治疗后肝组织上清液中白细胞介素1β(Interlecukin-1β,IL-1β)的水平显著降低(P<0.05),提示CAA具有明显抗炎作用,并且CAA干预显著减轻小鼠肝的纤维化程度,天狼星红染色发现,CAA组胶原沉积显著减少(P<0.05),进一步Western印迹结果表明,CAA组纤维化相关基因纤连蛋白(fibronectin,FN)、α-平滑肌肌动蛋白(α-smooth muscle actin,α-SMA)蛋白质水平表达降低,E-钙黏着蛋白(E-cadherin,E-ca)的表达升高(P<0.05)。E2F转录因子1(E2F transcription factor 1,E2F1)被证实在肝中是葡萄糖和脂质代谢的主要因子,在肥胖小鼠中表达增加,并且可通过PPARγ的转录调节参与脂肪组织代谢,我们猜测,E2F1是CAA改善NAFLD肝脂质沉积和纤维化的中间作用靶标。通过免疫组织化学染色观察E2F1和其同家族拮抗转录因子E2F转录因子7(E2F transcription factor 7,E2F7)在小鼠经CAA处理后在肝组织核质中均表达,通过Western印迹法和实时荧光定量PCR进一步检测蛋白质和mRNA的表达发现,在CAA组中E2F1较NAFLD组基因表达降低(P<0.05),E2F7基因表达增加(P<0.05),并且spearman秩相关分析提示,E2F1和E2F7呈显著负相关(P<0.05)。以上结果表明,树豆酮酸A可有效减轻db/db小鼠非酒精性脂肪性肝损伤,改善糖脂代谢紊乱,抑制脂质过度沉积,减轻肝纤维化以缓解NAFLD进一步发展,同时E2F1和E2F7可能参与了CAA改善脂质代谢和纤维化的过程。

关键词：非酒精性脂肪性肝病 E2F转录因子1 E2F转录因子7 树豆酮酸A 肝纤维化上皮-间充质转化

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