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Encapsulating metal organic framework into hollow mesoporous carbon sphere as efficient oxygen bifunctional electrocatalyst

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National Science Review 2020年第3期7卷 609-619页

作者： Wanfeng Xiong Hongfang Li Hanhui You Minna cao rong cao State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences College of Chemistry and Materials Science Fujian Normal University

Applying metal organic frameworks(MOFs) in electrochemical systems is a currently emerging field owing to the rich metal nodes and highly specific surface area of MOFs. However, the problems for MOFs that need to be solved urgently are poor electrical conductivity and low ion transport. Here we present a facile in situ growth method for the rational synthesis of MOFs@hollow mesoporous carbon spheres(HMCS)yolk–shell-structured hybrid material for the first time. The size of the encapsulated Zeolitic Imidazolate Framework-67(ZIF-67) is well controlled to 100 nm due to the spatial confinement effect of HMCS, and the electrical conductivity of ZIF-67 is also increased significantly. The ZIF@HMCS-25% hybrid material obtained exhibits a highly efficient oxygen reduction reaction activity with 0.823 V(vs. reversible hydrogen electrode) half-wave potential and an even higher kinetic current density(JK= 13.8 m A cm-2) than commercial Pt/C. ZIF@HMCS-25% also displays excellent oxygen evolution reaction performance and the overpotential of ZIF@HMCS-25% at 10 m A cm-2 is 407 m V. In addition, ZIF@HMCS-25% is further employed as an air electrode for a rechargeable Zn–air battery, exhibiting a high power density(120.2 m W cm-2 at 171.4 m A cm-2) and long-term charge/discharge stability(80 h at 5 m A cm-2). This MOFs@HMCS yolk–shell design provides a versatile method for the application of MOFs as electrocatalysts directly.

关键词： metal organic frameworks yolk–shell structure bifunctional electrocatalyst Zn–air battery

Synergetic effects of gold-doped copper nanowires with low Au content for enhanced electrocatalytic CO_(2)reduction to multicarbon products

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Nano Research 2023年第5期16卷 7777-7783页

作者： Zongnan Wei Shuai Yue Shuiying Gao Minna cao rong cao Department of Chemistry University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100049China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China

As efficient catalysts of electrochemical CO_(2)reduction reaction(CO_(2)RR)towards multicarbon(C_(2+))products,Cu-based catalysts have faced the challenges of increasing the reactive activity and ***,we decorated the surface of Cu nanowires(Cu NWs)with a small amount of Au nanoparticles(Au NPs)by the homo-nucleation *** the Au to Cu mass ratio is as little as 0.7 to 99.3,the gold-doped copper nanowires(Cu-Au NWs)could effectively improve the selectivity and activity of CO_(2)RR to C_(2+)resultants,with the Faradaic efficiency(FE)from 39.7%(Cu NWs)to 65.3%,the partial current density from 7.0(Cu NWs)to 12.1 mA/cm^(2) under−1.25 V *** hydrogen electrode(RHE).The enhanced electrocatalytic performance could be attributed to the following three synergetic *** addition of Au nanoparticles caused a rougher surface of the catalyst,which allowed for more active sites ***,Au sites generated*CO intermediates spilling over into Cu sites with the calculated efficiency of 87.2%,which are necessary for multicarbon ***,the interphase electron transferred from Cu to Au induced the electron-deficient Cu,which favored the adsorption of*CO to further generate multicarbon *** results uncovered the morphology,tandem,electronic effect between Cu NWs and Au NPs facilitated the activity and selectivity of CO_(2)RR to multicarbons.

关键词： electrochemical CO_(2)reduction multicarbon production bimetallic catalyst Cu nanowires Au nanoparticles

Zn-Fe and Y-modified Zn-Fe coatings on 42CrMo steel via pack cementation

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Rare Metals 2021年第8期40卷 2266-2274页

作者： Li Liu Si-rong Yu Wen-An cao School of Materials Science and Engineering China University of Petroleum(East China)Qingdao266580China

Zn-Fe and Y-modified Zn-Fe coatings were prepared on 42 CrMo steel through pack cementation processes at 370,390 and 410℃ for 4 h.Y modification was achieved through the co-deposition of Zn and Y_(2)O_(3).The effects of Y modification on microstructure,formation and corrosion behavior of the Zn-Fe coating were *** coating thickness increased with an increase in *** Y-modified Zn-Fe coating was thicker than the plain Zn-Fe *** the Zn-Fe coating and Y-modified Zn-Fe coating showed single-layered structures,but the overall microstructure was improved by Y *** activation energies for Zn-Fe coating and Y-modified Zn-Fe coating were 113.15 and80.65 kJ·mol^(-1),*** Zn-Fe coating consisted of FeZn_(13) and Fe11Zn40 *** effects of Y modification on the corrosion behavior of the Zn-Fe coating were evaluated through an immersion test and polarization *** results showed that the corrosion resistance was improved by Y modification.

关键词： Pack cementation Coating Modification Activation energy Corrosion

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主动脉瓣置换术后发生主动脉夹层的临床分析

中国医药 2013年第3期8卷 310-311页

作者：孙广龙曹向戎张富恩黄国晖张健群首都医科大学附属北京安贞医院心外科 100029

目的总结主动脉瓣病变行主动脉瓣置换（AVR）术后远期发生主动脉夹层的可能原因以及再次手术的方式选择和临床体会。方法收集2009年6月至2010年11月收治的AVR术后形成主动脉夹层患者12例的临床资料进行回顾性分析。其中升主动脉夹层8例... 详细信息

目的总结主动脉瓣病变行主动脉瓣置换（AVR）术后远期发生主动脉夹层的可能原因以及再次手术的方式选择和临床体会。方法收集2009年6月至2010年11月收治的AVR术后形成主动脉夹层患者12例的临床资料进行回顾性分析。其中升主动脉夹层8例，升主动脉＋主动脉弓部夹层2例，升主动脉＋主动脉弓＋降主动脉夹层2例；10例原发病为主动脉瓣关闭不全，2例为主动脉瓣狭窄。结果12例患者中1例二次手术前死亡；3例拒绝再次手术，8例接受二次手术，1例术后由于多脏器功能衰竭死亡，余患者恢复良好。术后3个月复查，假腔闭合良好，无新发夹层，窦部大小正常，包裹腔内无异常分流。结论AVR术后主动脉夹层多发生于术前主动脉瓣关闭不全合并升主动脉扩张的患者，同时与首次手术时未积极处理升主动脉，以及手术操作技巧有关，同时再次手术的方式选择也至关重要。

关键词：主动脉瓣置换术主动脉夹层

带蒂肌瓣转移联合负压吸引一期重建治疗心脏术后复杂性纵隔感染

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中国胸心血管外科临床杂志 2014年第3期21卷 371-374页

作者：曹向戎张富恩孙广龙李继勇张健群首都医科大学附属北京安贞医院心外科北京市心肺血管疾病研究所北京100029

目的总结心脏术后复杂性纵隔感染的外科治疗经验,探讨最佳治疗策略。方法回顾性分析首都医科大学附属北京安贞医院心外科2006年6月至2012年12月期间,应用带蒂肌瓣转移填充及负压吸引一期重建治疗心脏直视术后复杂性纵隔感染18例的临床... 详细信息

目的总结心脏术后复杂性纵隔感染的外科治疗经验,探讨最佳治疗策略。方法回顾性分析首都医科大学附属北京安贞医院心外科2006年6月至2012年12月期间,应用带蒂肌瓣转移填充及负压吸引一期重建治疗心脏直视术后复杂性纵隔感染18例的临床资料。其中男12例、女6例,平均年龄(65.5±8.2)岁。心脏手术与肌瓣重建时间间隔(12.5±5.8)d。彻底清创,拔除全部钢丝,游离双侧胸大肌瓣向中线牵拉,填充胸骨间隙并覆盖胸骨,无张力缝合肌瓣,纵隔及皮下置引流管负压吸引,关闭创口。胸骨缺损较大者,需游离一侧腹直肌瓣上提填充缺损,再按上述方法一期重建。结果 1例患者术后早期死于纵隔感染复发,脓毒血症及多器官功能衰竭。17例患者术后过程顺利,创口一期愈合。重建术后住院时间(18.6±7.2)d,创口愈合时间(4.5±2.4)周。17例患者随访6个月以上未见纵隔感染复发,工作生活质量良好。结论带蒂肌瓣转移联合负压吸引一期重建治疗心脏术后复杂性纵隔感染效果确切,手术简单,易于推广。

关键词：纵隔感染心脏外科手术胸大肌瓣负压疗法一期重建

Calcite U-Pb Geochronology Revealing Late Ediacaran-Early Paleozoic Hydrothermal Alteration in the Stenian-Tonian Carbonate of Northeastern North China Craton

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Journal of Earth Science 2023年第6期34卷 1724-1731页

作者： rong cao Hanqing Zhao Zhongwu Lan State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430078China

Two calcite LA-ICP-MS U-Pb ages of 534±26 Ma(MSWD=5.9)and 456±43 Ma(MSWD=3.8)were obtained from the Nanfen Formation,Xihe Group in the southern Liaoning Prov-ince,northeastern China,which significantly postdate the theoretical depositional age of sampling *** means they represent timing of post-depositional hydrothermal event possibly induced by syn-chronous far-field magmatism in the South *** of common Pb enriched muddy compo-nents coupled with input of"mantle"-like common Pb could account for the relatively low U contents and high common Pb contents in the dated muddy *** recommend that micro-domains of carbonates are prescreened by rapid in situ carbonate U-Pb geochronology to demonstrate whether they are of primary or secondary origin before utilizing them for chemostratigraphic study.

关键词： carbonates geochronology LA-ICP-MS Xihe Group hydrothermal origin

Role of the globus pallidus in motor and non-motor symptoms of Parkinson's disease

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Neural Regeneration Research 2025年第6期20卷 1628-1643页

作者： Yimiao Jiang Zengxin Qi Huixian Zhu Kangli Shen Ruiqi Liu Chenxin Fang Weiwei Lou Yifan Jiang Wangrui Yuan Xin cao Liang Chen Qianxing Zhuang Department of Physiology School of MedicineNantong UniversityNantongJiangsu ProvinceChina Department of Neurosurgery Huashan HospitalShanghai Medical CollegeFudan UniversityShanghaiChina National Center for Neurological Disorders ShanghaiChina Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration ShanghaiChina State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science Institute of Brain ScienceFudan UniversityShanghaiChina

The globus pallidus plays a pivotal role in the basal ganglia circuit. Parkinson's disease is characterized by degeneration of dopamine-producing cells in the substantia nigra, which leads to dopamine deficiency in the brain that subsequently manifests as various motor and non-motor symptoms. This review aims to summarize the involvement of the globus pallidus in both motor and non-motor manifestations of Parkinson's disease. The firing activities of parvalbumin neurons in the medial globus pallidus, including both the firing rate and pattern, exhibit strong correlations with the bradykinesia and rigidity associated with Parkinson's disease. Increased beta oscillations, which are highly correlated with bradykinesia and rigidity, are regulated by the lateral globus pallidus. Furthermore,bradykinesia and rigidity are strongly linked to the loss of dopaminergic projections within the cortical-basal ganglia-thalamocortical loop. Resting tremors are attributed to the transmission of pathological signals from the basal ganglia through the motor cortex to the cerebellum-ventral intermediate nucleus circuit. The cortico–striato–pallidal loop is responsible for mediating pallidi-associated sleep disorders. Medication and deep brain stimulation are the primary therapeutic strategies addressing the globus pallidus in Parkinson's disease. Medication is the primary treatment for motor symptoms in the early stages of Parkinson's disease, while deep brain stimulation has been clinically proven to be effective in alleviating symptoms in patients with advanced Parkinson's disease,particularly for the movement disorders caused by levodopa. Deep brain stimulation targeting the globus pallidus internus can improve motor function in patients with tremordominant and non-tremor-dominant Parkinson's disease, while deep brain stimulation targeting the globus pallidus externus can alter the temporal pattern of neural activity throughout the basal ganglia–thalamus network. Therefore, the comp

关键词： anxiety basal ganglia bradykinesia deep brain stimulation depression globus pallidus externus globus pallidus internus lateral globus pallidus medial globus pallidus neural circuit Parkinson's disease

Taphonomy and Paleoecology of Lycoptera: A Case Study from the Lower Jehol Group in Western Liaoning, Northeastern China

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Journal of Earth Science 2024年第3期35卷 737-746页

作者： Zhongwu Lan rong cao Shujing Zhang State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430078China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Geology Trinity CollegeDublin 999015Ireland

Taphonomy and paleoecology(biological behavior)of the Early Cretaceous fish fossils are poorly *** study reports for the first time a detailed taphonomical and paleoecological study on Lycoptera in the Mesozoic strata of western Liaoning Province,NE *** XRD analysis shows that gismondine is the dominant clay minerals that could have contributed to the preservation of Lycoptera fossils and microbial mat fragments in the fossil-bearing *** may have formed under volcanism-related hydrothermal regime that was transformed from crystal and lithic ***μ-XRF imaging analysis shows a dominant chemical composition of Al,Si,P,S,Rh,K,Ca,Ti,C,Cr,Mn,Fe,Ni,among which P,Ca,C and S are enriched in the fish skeleton in comparison to the *** suggests a dominant apatite composition for the fish *** influence did not smear off these organic signals probably because of protection of *** coexistance of C and S with Ni is assumed to represent recovered primary productivity following volcanic explosions and toxic gas *** head of juvenile fish stays close to the body of adult *** further discoveries,such phenomenon is interpreted to suggest that adult fish actively protected juvenile fish in the presence of environmental pressures such as anoxia and deterioration of water quality induced by *** acidification and hypoxia in association with volcanism created a harmful environment causing mass extinction of *** adult Lycoptera protected their juveniles by its body at the moment before *** biological behavior will be increasingly reported given the wide occurrence of Lycoptera in Mesozoic strata.

关键词： Lycoptera taphonomy paleoecology fish Jehol Group NE China.

The Effects of Metal Ions and Secondary Ligands on the Formation of Structures Resulted from Flexible Building Blocks

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Chinese Journal of Structural Chemistry 2005年第12期24卷 1462-1467页

作者： LI Feng LI Tao-Hai cao rong State Key Laboratory of Structural Chemistr3 Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fujian Fuzhou 350002 China

Two coordination polymers have been synthesized from cpg/4,4＇-bipy/metal ions reaction system, [Zn（cpg）（4,4＇-bipy）0.5（H2O）]·H2O 1 and [Cd（cpg）（4,4＇-bipy）0.5（H2O）2]·H2O 2. X- ray analyses show that different coordination geometries of zinc and cadmium ions lead to similar ladder structures （tetra-for zinc ion and hexa- for cadmium ion）, in which all the flexible cpg molecules exist as single conformations of anti-form.

关键词： hydrothermal synthesis flexible ligand prediction