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Science China Chemistry 2025年

作者： Jun-Qiang Chen Qiao-Hong Li Qin-Long Hong Ping shao Hai-Xia Zhang Jian Zhang State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Single-atom catalyst has garnered widespread attention to mimic mature enzymes due to its well-defined atomic structure and coordination environments. However, since the carbon–carbon（C–C） coupling reactions require synergistic catalysis of multiple sites, single-atom catalysts suffer from insufficient active sites and unclear reaction mechanisms. Controlling the reaction intermediates in a precisely targeted pocket through careful metal–organic cage design is therefore crucial. Here, we prepare a tetrahedral [Cu6L4]-type boron–imidazolate cage integrating highly active Cu sites and optimized cavity, which exhibits enzyme like specific catalytic performance in electrochemical CO2reduction reaction（CO2RR） to enhance the selectivity of *** analyses and computational calculations suggest that the single Cu site together with neighboring boron–imidazolate ligands provides suitably synergistic effects that enable the energetically favorable formation of an *COCHO intermediate, a key step determining selectivity. As a result, the [Cu6L4]-type cage of BIC-145 achieves a Faradaic efficiency of 28% for C2H4maintaining an average current density of -3.54 ma cm-2over a 5-hour electrolysis period. This work represents the first example for studying single-metal site catalysts with ultra-low coordination numbers through the rational design of metal–organic cages.

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采用骨料架构-固化技术对开挖淤泥加固试验研究

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土木与环境工程学报（中英文） 2025年第1期47卷 100-109页

作者：邵吉成袁波白银银骆嘉成浙江华坤地质发展有限公司浙江温州325006 温州市地质资源与生态环境重点实验室浙江温州325006 浙江省第十一地质大队浙江温州325006 温州市渣土利用开发股份有限公司浙江温州325700

为了对淤泥和建筑垃圾进行处置,实现二者的共同资源化利用,在室内和现场分别对淤泥进行固化试验。将建筑垃圾作为骨料按淤泥质量比的15%添加到淤泥中,再向淤泥中加入淤泥固化剂,通过机械搅拌的方式将淤泥与建筑垃圾、固化剂混合均匀,然... 详细信息

为了对淤泥和建筑垃圾进行处置,实现二者的共同资源化利用,在室内和现场分别对淤泥进行固化试验。将建筑垃圾作为骨料按淤泥质量比的15%添加到淤泥中,再向淤泥中加入淤泥固化剂,通过机械搅拌的方式将淤泥与建筑垃圾、固化剂混合均匀,然后对固化土进行养护。室内试验结果表明,当固化剂掺量为8%时,固化淤泥土强度较高,养护28 d后,室内无侧限抗压强度可达320 kPa;在现场试验中,静力触探试验和平板荷载试验表明,固化剂对淤泥的固化效果明显。将低剂量固化剂添加到淤泥中,固化淤泥土强度较低,骨料的架构作用不明显;当固化剂掺量为8%时,固化土的强度较高,骨料的架构作用有利于提升固化淤泥土的承载力,土体的承载力特征值可达325kPa,架构作用对固化淤泥土强度的提升率为71.05%,可实现淤泥和建筑垃圾的同步资源化利用。

关键词：淤泥固化骨料资源化利用架构作用承载力

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Investigation of multilevel ion-pairing effect of triferrocenylmethane in organic phase

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Chinese Chemical Letters 2014年第10期25卷 1379-1381页

作者： De-bo Xiang Hui-bo shao Key Laboratory of Cluster Science(Ministry of Education of China) School of ChemistryBeijing Institute of Technology China Aviation Lithium Battery Co. Ltd.

The intramolecular electronic communication and multilevel ion-pairing effect of triferrocenylmethane（TriFcM） in organic phase was studied with the ＂thin-layer electrochemistry＂ *** pairs of symmetric peaks in cyclic voltammetry of TriFcM correspond to three one-electron electrochemical reaction processes and indicate strong intramolecular electronic communication,which could be used to study the multilevel ion-pairing *** different formation constants of ion-pairs between the three ferroceniums of TriFcM and perchlorate in thin organic film were obtained and compared.

关键词： Triferrocenylmethane Thin-layer electrochemistry Intramolecular electronic communication Multilevel ion-pairing effect

Carbon‑Based Electrodes for Advanced Zinc‑Air Batteries:Oxygen‑Catalytic Site Regulation and Nanostructure Design

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Electrochemical Energy Reviews 2023年第1期6卷 532-572页

作者： Wenjie shao Rui Yan Mi Zhou Lang ma Christina Roth Tian ma Sujiao Cao Chong Cheng bo Yin Shuang Li College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065SichuanChina College of Biomass Science and Engineering Sichuan UniversityChengdu 610065SichuanChina Department of Ultrasound West China HospitalSichuan UniversityChengdu 610041SichuanChina Electrochemical Process Engineering Engineering SciencesUniversity of BayreuthUniversitätsstr.3095447 BayreuthGermany Med-X Center for materials Sichuan UniversityChengdu 610065SichuanChina Functional materials Department of ChemistryTechnische Universität BerlinHardenbergstraße 4010623 BerlinGermany

Zn-air batteries are highly attractive for direct chemical-to-electrical energy conversion and for solving the energy crisis and environmental *** efficient oxygen electrodes has been considered one of the most critical steps in the development of advanced Zn-air batteries because of the sluggish kinetics of the oxygen reduction reaction and the oxygen evolution *** recent years,nanostructured carbon-based electrodes with large surface areas,efficient oxygen-catalytic centers,and hierarchically porous matrices have provided significant opportunities to optimize the performance of the oxygen electrodes in both primary and rechargeable Zn-air *** this review,we provide a comprehensive summary of the reported nanostructured carbon-based electrodes for advanced Zn-air batteries in terms of tailoring the oxygen-catalytic sites and designing carbon *** versatile synthetic strategies,characterization methods,and in-depth understanding of the relationships between the oxygen-catalytic sites/nanostructures and the oxygen electrode performance are systematically ***,we also briefly outline recent progress in engineering flexible and high-power Zn-air ***,a thorough discussion of current primary challenges and future perspectives on the rational design of nanostructured carbon-based oxygen electrodes is given,thus providing inspiration for the future prosperity of fast-kinetic and efficient Zn-air batteries in a broad range of energy fields.

关键词： Zn-air batteries Carbon nanostructures Electrocatalysts Oxygen-catalytic catalysts ORR OER

Unconventional 2D Periodic Nanopatterns Based on Block Molecules

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Chinese Journal of Polymer Science 2023年第10期41卷 1508-1524页

作者： bo Hou Wen-Bin Zhang Yu shao Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry&Physics of Ministry of EducationCenter for Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China

This review summarizes the self-assembly of block molecules forming unconventional two-dimensional(2D)periodic ***,we emphasize the structural evolution from simple columnar phases to complex 2D tiling morphologies in soft materials including block copolymers,liquid crystals,giant molecules,***,the state-of-the-art nanofabrication technologies for making sophisticated nanostructures with specific functions via combining both bottom-up assembly and top-down lithography-based methods are discussed,highlighting the use of directed self-assembly ***,we provide our perspective on this *** further increasing the complexity of block molecules and the designability of lithography,low-dimensional ordered morphologies will be particularly promising for further application in nanotechnology.

关键词： Two-dimensional ordered morphologies Block molecules Directed self-assembly Nanofabrication Tilings and patterns

Thermally stable microstructures and mechanical properties of B4C-Al composite with in-situ formed Mg（Al）B2

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Journal of materials Science & Technology 2019年第9期35卷 1825-1830页

作者： Yangtao Zhou Yuning Zan Shijian Zheng Xiaohong shao Qianqian Jin bo Zhang Quanzhao Wang bolv Xiao Xiuliang ma Zongyi ma Shenyang National Laboratory for materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key Laboratory of Nuclear materials and Satety Assessment Institute of Meatal ResearchChinese Academy of SciencesShengyang 110016China School of materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China

B4C particulate-reinforced 6061A1 composite was fabricated by powder metallurgy method. The as-rolled composite possesses high tensile strength which is comparable to that of the peak-aged 6061A1 alloy. More importantly, the microstructures and mechanical properties are thermally stable during long-term holding at elevated temperature (400℃). The microstructual contributions to the strength of the composite were discussed. Transmission electron microscopy (TEM) analysis indicates that the in-situ formed reinforcement Mg(Al)B2, as products of the interfacial reactions between B4C and the aluminum matrix, show not only good resistance to thermal coarsening but also strong pinning effect to the grain boundaries in the alloy matrix.

关键词： B4C-Al composites Thermal stability In-situ reinforcement Grain boundaries Solute segregation

Polarized hydroxyapatite/BaTiO_(3) scaffolds with bio-inspired porous structure for enhanced bone penetration

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Rare Metals 2022年第1期41卷 67-77页

作者： Chun-Sheng shao Liang-Jian Chen Rui-Min Tang bo Zhang Jiang-Jie Tang Wei-Na ma Department of Stomatology Third Xiangya HospitalCentral South UniversityChangsha 410013China

The porous HA/BaTiO_(3)ceramics have the potential to exhibit superior capabilities to promote bone ***,there are few reports on in vivo ***,we fabricated bio-inspired porous HA/BaTiO_(3)composites for bone repair via *** composites had a unique microstructure composed of the central canal and radically distributed lamellae,similar to the structure of nature cortical bone unite,the Haversian *** and non-polarized bio-inspired porous HA/BaTiO_(3)samples were implanted into the femoral condyle of the New Zealand *** was demonstrated that the polarization of the porous HA/BaTiO_(3)played a favorable part in bone ***,the combination between the osteoconductivity of the microstructure and augmented osteogenic cell behavior induced by charges on surfaces of polarized porous HA/BaTiO_(3)facilitated bone penetration through the *** bio-inspired porous HA/BaTiO_(3)composites are demonstrated to be promising scaffolds for bone repair.

关键词： Porous materials Freeze-casting Hydroxyapatite BaTiO_(3) bone regeneration

Degradation and biological performance of porous osteomimetic biphasic calcium phosphate in vitro and in vivo

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Rare Metals 2022年第2期41卷 457-468页

作者： Chun-Sheng shao Liang-Jian Chen Rui-Min Tang bo Zhang Jiang-Jie Tang Wei-Na ma Department of Stomatology Third Xiangya HospitalCentral South UniversityChangsha 410013China

The combination between biphasic calcium phosphate(BCP)and the osteomimetic porous microstructure obtained via freeze casting is hoped to achieve excellent bone regeneration,while the effects of HA and b-TCP ratio changes on the degradation and biological performance of the BCP scaffolds with this unique microstructure need to be ***,we prepared the osteomimetic BCP scaffolds with different HA/b-TCP ratios(HA30/b-TCP70,HA50/b-TCP50,HA70/b-TCP30)and the effects of different HA/b-TCPHA/b-TCP ratios on the degradation and biological performance were studied in vitro and *** BCP scaffolds with different HA/b-TCP ratios exhibited similar microstructure,mechanical performance,and protein absorption capability,while HA70/b-TCP30 BCP scaffolds showed an advisable degradation *** in vitro confirmed the bio-compatibility and promotion on the proliferation,differentiation of MG63 cells in the porous osteomimetic BCP scaffolds with a HA/b-TCP ratio at 30:*** experiments also showed that the porous osteomimetic BCP scaffolds with a HA/b-TCP ratio at 30:70 had excellent bone regeneration capacity and proper degradation rate compatible with bone *** results reveal that the porous osteomimetic BCP scaffold with a HA/b-TCP ratio at 30:70 is a potential candidate of biodegradable bone substitutes used for bone repair.

关键词： Porous scaffolds Biphasic calcium phosphate Hydroxyapatite b-TCP Degradation

Akt isoforms differentially provide for chemoresistance in prostate cancer

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Cancer Biology & Medicine 2022年第5期19卷 635-650页

作者： bo ma Hanshuang shao Xia Jiang Zhou Wang Chuanyue(Cary)Wu Diana Whaley Alan Wells Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy Cancer InstituteXuzhou Medical UniversityXuzhou 221002China Department of Pathology University of PittsburghPittsburghPA 15261USA Pittsburgh VA Healthcare System PittsburghPA 15213USA Department of Biomedical Informatics University of PittsburghPittsburghPA 15261USA Department of Urology University of PittsburghPittsburghPA 15261USA Department of Pharmacology and Chemical Biology University of PittsburghPittsburghPA 15261USA UPMC Hillman Cancer Center PittsburghPA 15232USA

Objective:Early prostate cancer micrometastatic foci undergo a mesenchymal to epithelial reverting transition,not only aiding seeding and colonization,but also rendering the tumor cells generally *** previously found that upregulated E-cadherin in the epithelial micrometastases activated canonical survival pathways,including PI3K-Akt,that protected the tumor cells from death;however,the extent of protection from blocking the pathway in its entirety was modest,because different isoforms may have alternately affected cell ***,we characterized Akt isoform expressions in primary and metastatic prostate cancers,as well as their individual contributions to ***:Akt isoforms and E-cadherin were manipulated with drugs,knocked down,and over *** cell killing was determined in vitro and in *** survival was calculated from patient records and ***:Pan-Akt inhibition sensitized tumor cells to chemotherapy,and specific blockade of Akt1 or/and Akt2 caused cells to be more *** of Akt3 induced apoptosis.A low dose of Akt1 or Akt2 inhibitor enabled standard chemotherapies to significantly eradicate metastatic prostate tumors in a mouse model,acting as *** human specimens,we found Akt1 and Akt2 positively correlated,whereas Akt3 inversely correlated,with the overall survival of prostate cancer ***1high/Akt2high/Akt3low tumors had the worst ***:E-cadherin-induced activation of Akt1/2 isoforms was the essential mechanism of chemoresistance,whereas Akt3 made cells more *** findings emphasized the need to target Akt1/2,rather than pan-Akt,as a rational therapeutic approach.

关键词： Chemoresistance adjuvant therapy metastasis dormancy Akt isoforms

Evaluation and analysis of intraspecific competition in maize: A case study on plant density experiment

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Journal of Integrative Agriculture 2018年第10期17卷 2235-2244页

作者： ZHAI Li-chao XIE Rui-zhi MING bo LI shao-kun ma Da-ling Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology Ministry of Agriculture Center for Agricultural Resources Research Institute of Genetics and Development Biology Chinese Academy of Sciences Key Laboratory of Cash Crop Stress Biology for Ulanqab Jining Normal University

Intraspecific competition is a common phenomenon in agricultural production,and maize is one of the most sensitive grass species to intraspecific competition due to its low tillering *** study evaluated and analyzed intraspecific competition in maize,and screened competitive indices that could be used to evaluate intraspecific competition in a maize population.A 2-year field experiment was conducted using the maize hybrid Zhongdan 2 at 12 plant densities ranging from 1.5 to 18.0 plants（pl）*** results showed that the response of single-plant grain yield and dry matter at harvest to increased plant density decreased exponentially and that the harvest index decreased *** response of population-level grain yield to plant density was curvilinear,producing a maximum value at the optimum population ***,the yielddensity equation agreed well with the Steinhart-Hart equation curves,but not with the quadratic equation curves reported by most previous *** indices are used to evaluate competition in a plant population or plant *** present results show that competitive intensity（CI）and absolute severity of competition（ASC）increased with increasing plant density;however,relative yield（RY）and relative reproductive efficiency（RReff）*** different responses of these indices reflect different aspects of *** to the analysis of CI,ASC,RY,and RReff,higher CI and ASC values indicate higher intraspecific competition,whereas higher RY and RReff values indirectly reflect lower intraspecific *** competitive indices evaluate not only the intraspecific competitive intensity under different plant densities of the same cultivar but also those of different cultivars under the same plant ***,some overlap exists in the calculations of ASC,CI,and RY,so one could simply select any one of these indices to evaluate intraspecific competition in a maize *** conclusion,the present study

关键词： maize intraspecific competition plant density competitive indices grain yield