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Nano-Au-decorated hierarchical porous cobalt sulfide derived from ZIF-67 toward optimized oxygen evolution catalysis:Important roles of microstructures and electronic modulation

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Carbon Energy 2024年第5期6卷 1-14页

作者： Hongyu Gong Guanliang Sun Wenhua shi Dongwei Li Xiangjun Zheng huan shi Xiu Liang Ruizhi Yang Changzhou Yuan Department of New Energy Materials School of Environmental and Chemical EngineeringJiangsu University of Science and TechnologyZhenjiangJiangsuChina Advanced Materials Institute Qilu University of Technology(Shandong Academy of Sciences)JinanShandongChina Shandong Saikesaisi Hydrogen Energy Co. Ltd.JinanShandongChina Department of Materials Science and Engineering School of Materials Science&EngineeringUniversity of JinanJinanShandongChina Department of New Energy Science and Engineering College of EnergySoochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhouJiangsuChina

Enhancing both the number of active sites available and the intrinsic activity of Co-based electrocatalysts simultaneously is a desirable goal.Herein,a ZIF-67-derived hierarchical porous cobalt sulfide decorated by Au nanoparticles(NPs)(denoted as HP-Au@CoxSy@ZIF-67)hybrid is synthesized by low-temperature sulfuration treatment.The well-defined macroporous-mesoporous-microporous structure is obtained based on the combination of polystyrene spheres,as-formed CoxSy nanosheets,and ZIF-67 frameworks.This novel three-dimensional hierarchical structure significantly enlarges the three-phase interfaces,accelerating the mass transfer and exposing the active centers for oxygen evolution reaction.The electronic structure of Co is modulated by Au through charge transfer,and a series of experiments,together with theoretical analysis,is performed to ascertain the electronic modulation of Co by Au.Meanwhile,HP-Au@CoxSy@ZIF-67 catalysts with different amounts of Au were synthesized,wherein Au and NaBH4 reductant result in an interesting“competition effect”to regulate the relative ratio of Co^(2+)/Co^(3+),and moderate Au assists the electrochemical performance to reach the highest value.Consequently,the optimized HP-Au@CoxSy@ZIF-67 exhibits a low overpotential of 340 mV at 10 mA cm^(-2)and a Tafel slope of 42 mV dec-1 for OER in 0.1 M aqueous KOH,enabling efficient water splitting and Zn-air battery performance.The work here highlights the pivotal roles of both microstructural and electronic modulation in enhancing electrocatalytic activity and presents a feasible strategy for designing and optimizing advanced electrocatalysts.

关键词： Au nanoparticles cobalt sulfide electronic modulation hierarchical porous structure oxygen evolution reaction

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Controlling hydrogenation of C=C and C=O bonds in cinnamaldehyde using Pt1/Ni and Pt1/Co single-atom alloy catalysts

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Rare Metals 2024年第6期43卷 2859-2868页

作者： huan-shi Lan Yi-Da Yang Qing-Di Sun Hao Zhang Ying Zhang Qian He Ran Chen Guo-Yi Bai Xiao-Hui He Hong-Bing Ji School of Chemistry and Chemical Engineering Guangxi University Key Laboratory of Bioinorganicand Synthetic Chemistry of Ministry of Education Fine Chemical Industry Research InstituteSchool of ChemistryIGCMESun Yat-sen University UBFC CNRSENSMMFEMTO-ST Institute College of Chemistry and Materials Science Hebei University State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology Institute of Green Petroleum Processing and Light Hydrocarbon ConversionCollege of Chemical EngineeringZhejiang University of Technology

Selective hydrogenation of C=C and C=O bonds in cinnamaldehyde (CAL) to produce desired products is a challenging task due to the complex conjugate system of the two unsaturated functional groups.In this study,a simple ball milling method is presented for synthesizing Pt-based single-atom alloy catalysts (SAAs) that can function as a control switch for the selective hydrogenation of CAL into highly valuable products.

关键词： SELECTIVE HYDROGENATION CHEMOSELECTIVE HYDROGENATION NANOPARTICLES GENERATION EFFICIENT FE CO

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缺血性中风后中枢神经系统与免疫系统的交互作用机制及其中药干预研究进展

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中国中药杂志 2024年第5期49卷 1154-1163页

作者：王欢欢孟凡征唐仕欢吴宏伟杨洪军天津中医药大学中西医结合医院天津300100 中国中医科学院中药研究所北京100700

缺血性中风分为急性期、亚急性期、恢复期,不同的阶段具有不同病理生理特征,其中免疫与炎症反应在缺血后的数天和数周内持续存在。缺血性中风不仅在受损大脑区域引发局部炎症,还会诱导免疫系统紊乱,进而促进神经炎症,加剧脑损伤。因此,... 详细信息

缺血性中风分为急性期、亚急性期、恢复期,不同的阶段具有不同病理生理特征,其中免疫与炎症反应在缺血后的数天和数周内持续存在。缺血性中风不仅在受损大脑区域引发局部炎症,还会诱导免疫系统紊乱,进而促进神经炎症,加剧脑损伤。因此,对缺血性中风后中枢神经系统与免疫系统相互影响进行深入分析,对其相互作用的主要因素进行干预,阻断病理级联反应、减轻脑部炎症,成为缺血性中风的治疗策略之一。该文对中枢神经系统与免疫系统的交互作用途径进行总结梳理,从自主神经系统、下丘脑-垂体-肾上腺轴(the hypothalamic-pituitary-adrenal axis,HPA)、局部炎症解析中枢神经系统对免疫系统的影响,从免疫细胞的动态变化解析免疫系统对中枢神经系统的影响。同时,总结中医药防治的相关进展,为中药防治缺血性中风的复杂作用机制解析提供新思路。

关键词：缺血性中风免疫与炎症中枢神经系统免疫系统

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Application of buried auricular point combined with Wenjing Sanhan prescription in arteriosclerosis obliterans patients with resting pain

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World Journal of Clinical Cases 2024年第24期12卷 5558-5567页

作者： Ya-Ping Li Tian Su Xiao-Li Xue huan-Ren shi Zhi-Hui Su Jun Li Department of Vascular Shijiazhuang Hospital of Traditional Chinese Medicine(Eastern Hospital District)Shijiazhuang 050011Hebei ProvinceChina

BACKGROUND Research on the combined use of ear acupoint embedding beans and warming meridians with cold-dispersing formulas for alleviating resting pain in patients with arteriosclerosis obliterans(ASO)remains limited.AIM To explore the therapeutic efficacy of auricular point embedding beans combined with Wenjing Sanhan prescription in alleviating resting pain in patients with lower-limb ASO.METHODS A total of 100 patients with ASO experiencing resting pain who were treated at our hospital from January 2022 to January 2023 were enrolled.They were randomly allocated into two groups using a double-blind approach.The control group was treated using a warming meridian with a cold-dispersing formula,while the study group received additional treatment with ear acupoint embedding beans.The clinical efficacy,ankle-brachial artery pressure ratio,hemorheological indicators,and traditional Chinese medicine symptom scores were compared between the two groups.RESULTS The clinical efficacy rate in the study group was significantly higher(94.00%)than that in the control group(72.00%,P<0.05).Moreover,the ankle-brachial artery pressure ratio was significantly higher in the study group after treatment(P<0.05).Hemorheological parameters,including whole blood viscosity,plasma viscosity(1.83±0.11)mPa/s,fibrinogen levels(3.30±0.21)g/L,platelet adhesion rate(49.87%±10.51%),and erythrocyte aggregation index(1.79±0)were improved in the study group compared to the control group.In addition,the scores for decreased skin temperature(1.41±0.26),intermittent claudication(1.30±0.20),and resting pain(1.23±0.31)were significantly lower in the study group than those in the control group(all P<0.05).The level of oxidative stress in the study group also exhibited significant improvement(P<0.05),and the levels of inflammatory factors were considerably lower than those in the control group.CONCLUSION The combination of ear point embedding beans and Wenjing Sanhan prescription demonstrates promising clinical efficacy in alleviating resting pain associ

关键词： Embedding beans in ear acupoints Prescription for warming channels and dispelling cold Lower limb arteriosclerosis obliterans Resting pain Blood flow rheology Curative effect

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Number estimation of controllers for pinning a complex dynamical network

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第6期12卷 470-477页

作者： Lei WANG huan shi You-xian SUN School of Mathematics and Systems Science and LMIB Beihang University Beijing 100191 China State Key Lab of Industrial Control Technology Institute of Industrial Process Control Zhejiang University Hangzhou 310027 China

Number estimation of controllers is a fundamental question in pinning synchronization of complex networks. This paper studies the problem of controller number in synchronizing a complex network of coupled dynamical systems by means of pinning. For a complex network with a symmetric coupling matrix and full coupling between the nodes, we formulate network synchronization via pinning as a linear matrix inequality criterion, and provide a lower bound and an upper bound of the controller number for a given complex network with fixed architecture. Several numerical examples with Barabási-Albert network topologies are provided to verify our theoretical results.

关键词： Pinning control Number estimation Synchronization Complex networks

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Insight into role of Ni/Fe existing forms in reversible oxygen catalysis based on Ni-Fe single-atom/nanoparticles and N-doped carbon

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Rare Metals 2022年第12期41卷 4034-4040页

作者： Hong-Yu Gong Xiu Liang Guan-Liang Sun Dong-Wei Li Xiang-Jun Zheng huan shi Kai Zeng Guan-Chen Xu Yong Li Rui-Zhi Yang Chang-Zhou Yuan Advanced Materials Institute Qilu University of Technology(Shandong Academy of Sciences)Jinan 250014China Shandong Saikesaisi Hydrogen Energy Co. LtdJinan 250100China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Materials Science&Engineering University of JinanJinan 250014China College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhou 215006China

Oxygen catalysis reactions play essential roles in metal-air batteries,fuel cells,water electrolysis and artificial photosynthesis,with their development receiving significant attention in recent years.Understanding the structure-activity relationship plays an important role in the construction and performance optimization of reversible oxygen catalyst.

关键词： catalyst catalysis reversible

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Numerical Simulation of Concrete Plate Damaged Under Explosive Loading

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Transactions of Tianjin University 2006年第B9期12卷 158-160页

作者： huan shi JIANG Guoping Chen Shengming TANG Xiangqian Earthquake Engineering Research Test Center Guangzhou University Guangzhou 510405 China Central South Forestry University Changsha 410082 China

The grisliness after-effects can be induced by explosion accident with the collapsing of the structures, the demolishing of the equipments and the casualty of the human beings. Isolation belt constructed between the blast point and the construction is one of the useful design schemes for blast resistance. The nonlinear procedure ANSYS/LSDYNA970 is used to simulate the contact detonation and the isolation belt of blast resistance filled with the air or water respectively. The results indicate that the maximal damage can be caused by the contact detonation, and the isolation belt of blast resistent filled with water can reduce the damage greatly.

关键词：混凝土爆炸负载状态方程数字模拟结构

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Influence of aluminium nitride as a foaming agent on the preparation of foam glass-ceramics from high-titanium blast furnace slag

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International Journal of Minerals,Metallurgy and Materials 2016年第5期23卷 595-600页

作者： huan shi Ke-qin Feng Hai-bo Wang Chang-hong Chen Hong-ling Zhou School of Manufacturing Science and Engineering Sichuan University Chengdu 610065 China School of Materials Engineering Panzhihua College Panzhihua 617000 China

To effectively reuse high-titanium blast furnace slag （TS）, foam glass-ceramics were successfully prepared by powder sintering at 1000℃. TS and waste glass were used as the main raw materials, aluminium nitride （AIN） as the foaming agent, and borax as the fluxing agent. The influence of the amount of A1N added （lwt%-5wt%） on the crystalline phases, microstructure, and properties of the produced foam glass-ceramics was studied. The results showed that the main crystal phases were perovskite, diopside, and augite. With increasing A1N content, a transformation from diopside to augite occurred and the crystallinity of the pyroxene phases slightly decreased. Initially, the aver- age pore size and porosity of the foam glass-ceramics increased and subsequently decreased; similarly, their bulk density and compressive strength decreased and subsequently increased. The optimal properties were obtained when the foam glass-ceramics were prepared by adding 4wt% AIN.

关键词： blast furnace slag aluminium nitride powder sintering foam glass-ceramics crystallization

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一种Kongsberg EM多波束后向散射强度波束指向性残余改正方法

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海洋科学进展 2024年第2期42卷 400-411页

作者：理晨赵建虎徐冲浣石季华实验室光电科学与技术研究部广东佛山528000 武汉大学测绘学院湖北武汉430079

Kongsberg EM多波束声呐的波束指向性与出厂标定存在偏差,导致后向散射强度呈现与扇区耦合的辐射畸变,针对这个问题提出了一种基于波束指向性模型的多扇区指向性残余改正方法。该方法首先在分析波束收发过程的基础上,构建EM声呐多扇区... 详细信息

Kongsberg EM多波束声呐的波束指向性与出厂标定存在偏差,导致后向散射强度呈现与扇区耦合的辐射畸变,针对这个问题提出了一种基于波束指向性模型的多扇区指向性残余改正方法。该方法首先在分析波束收发过程的基础上,构建EM声呐多扇区指向性辐射模型;然后选取特定测线,采用经验性声学模型估计后向散射强度-角度曲线,分离各扇区指向性残余信号;最后对回波强度进行指向性残余改正,得到与采集扇区无关的后向散射强度。实例计算结果表明:该方法能有效降低多扇区指向性残余对后向散射强度测量的干扰,提高EM系列多波束声呐在海底底质分析中的使用价值。

关键词： EM多波束声呐后向散射强度多扇区波束指向性波束指向性残余改正

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Therapeutic effects of EGF-modified curcumin/ chitosan nano-spray on wound healing

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Regenerative Biomaterials 2021年第2期8卷 140-148页

作者： Yue Li QingQing Leng XianLun Pang huan shi YanLin Liu SuSu Xiao Ling Zhao Ping Zhou ShaoZhi Fu Department of Oncology The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000China Health Management Center Traditional Chinese Medicine Hospital Affiliated to Southwest Medical UniversityLuzhou 646000China Department of Pharmaceutics School of Pharmacy of Southwest Medical UniversityLuzhou 646000China Department of Radiology The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000China

Dermal injury,including trauma,surgical incisions,and burns,remain the most prevalent socio-economical health care issue in the clinic.Nanomedicine represents a reliable administration strategy that can promote the healing of skin lesions,but the lack of effective drug delivery methods can limit its effectiveness.In this study,we developed a novel nano-drug delivery system to treat skin defects through spraying.We prepared curcumin-loaded chitosan nanoparticles modified with epidermal growth factor(EGF)to develop an aqueous EGF-modified spray(EGF@CCN)for the treatment of dermal wounds.In vitro assays showed that the EGF@CCN displayed low cytotoxicity,and that curcumin was continuously and slowly released from the EGF@CCN.In vivo efficacy on wound healing was then evaluated using full-thickness dermal defect models in Wistar rats,showing that the EGF@CCN had significant advantages in promoting wound healing.On day 12 post-operation,skin defects in the rats of the EGF@CCN group were almost completely restored.These effects were related to the activity of curcumin and EGF on skin healing,and the high compatibility of the nano formulation.We therefore conclude that the prepared nano-scaled EGF@CCN spray represents a promising strategy for the treatment of dermal wounds.

关键词： curcumin chitosan EGF skin regeneration wound healing

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