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Anchoring metal ions in amine-functionalized boron imidazolate framework for photocatalytic reduction of CO_(2)

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Chinese Chemical Letters 2022年第6期33卷 2915-2918页

作者： Guilan Xu Qin-Long Hong Yayong Sun Meng Liu hai-xia zhang Jian zhang State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Key Lab for Sport Shoes Upper Materials of Fujian Province Fujian Huafeng New Material Co.Ltd.Putian 351164China

The photocatalytic reduction of CO_(2)to energy-rich chemicals is highly appealing for alleviation of energy crisis and environment *** introduction of different active sites is a key factor to determine the reaction activity and ***,we demonstrate the metal ion-dependent performance for photocatalytic CO_(2)reduction by anchoring transition metal ions(Co^(2+)and Ni^(2+))in an amine-functionalized boron imidazolate framework(BIF-43).As a result,Ni@BIF-43 realized a high selectivity of 90.2%for the CO_(2)-to-CO,while Co@BIF-43 achieved more efficient conversion with a high CO production rate of 2036.0μmol g^(-1)h^(-1).Significantly,precise control of isolated metal site on a well-defined structure through coordination-assisted strategies enables us to better understand the specific effects of different metal-ion species on photoreduction of CO_(2)as well as the catalytic mechanism.

关键词： Metal-organic framework CO_(2)reduction Boron-imidazolate framework Photocatalysis Structure

Recent advances of ferro-/piezoelectric polarization effect for dendrite-free metal anodes

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稀有金属:英文版 2023年第8期42卷 2516-2544页

作者： hai-xia zhang Peng-Fei Wang Chuan-Gang Yao Shi-Peng Chen Ke-Di Cai Fa-Nian Shi School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China School of Environmental and Chemical Engineering Shenyang University of TechnologyShenyang 110870China College of Chemistry and Materials Engineering Bohai UniversityJinzhou 121013China

Metal anodes based on plating/stripping electrochemistry,for instance,common alkaline metal lithium(Li),sodium(Na),potassium(K),polyvalent metal magnesium(Mg),aluminum(Al),calcium(Ca)and zinc(Zn)are imminently evoked and increasingly researched for future generation high-energy-density rechargeable batteries due to their large theoretical capacity,low electrochemical potential,and superior electronic conductivity in recent ***,the uncontrolled dendrite formation issue induces low Coulombic efficiency,short lifespan,and hazardous security risks,hindering the actual applications of metal *** various solutions,the utilization of ferro-/piezoelectric materials for metal anodes displays active effects on decreasing local current density,suppressing dendrite growth,and tolerating volume expansion benefits from the unique ferro-/piezoelectric polarization *** review presents the research progress of ferro-/piezoelectric polarization effect for regulating the dendritic growth of metal anodes for the first ***,the current challenges and strategies of metal anodes are ***,ferro-/piezoelectric materials and their working principle are ***,the recent research progress of ferroelectric and piezoelectric materials on dynamic regulation of dendrite growth is summarized,and the future perspectives are *** hope this review could draw more attention in designing metal anodes with self-polarization materials and promoting their practical applications.

关键词： Metal anode Ferro-/piezoelectric material Polarization effect Dendrite-free Lithium Perovskite

Recent progress in silk fibroin-based flexible electronics

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Microsystems & Nanoengineering 2021年第3期7卷 1-25页

作者： Dan-Liang Wen De-Heng Sun Peng Huang Wen Huang Meng Su Ya Wang Meng-Di Han Beomjoon Kim Juergen Brugger hai-xia zhang xiao-Sheng zhang School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China CIRMM Institute of Industrial ScienceThe University of TokyoTokyo 153-8505Japan Microsystems Laboratory Ecole Polytechnique Federale de Lausanne(EPFL)1015 LausanneSwitzerland Institute of Microelectronics Peking University100087 BeijingChina

With the rapid development of the Internet of Things(loT)and the emergence of 5G,traditional silicon-based electronics no Ion ger fully meet market dema nds such as nonplanar application scenarios due to mechanical *** provides unprecedented opportunities for flexible electronics that bypass the physical rigidity through the introduction of flexible *** recent decades,biological materials with outstanding biocompatibility and biodegradability,which are considered some of the most promising candidates for next-generation flexible electronics,have received increasing attention,e.g.,silk fibroin,cellulose,pectin,chitosan,and *** them,silk fibroin presents greater superiorities in biocompatibility and biodegradability,and moreover,it also possesses a variety of attractive properties,such as adjustable water solubility,remarkable optical transmittance,high mechanical robustness,light weight,and ease of processing,which are partially or even completely lacking in other biological ***,silk fibroin has been widely used as fundamental components for the construction of biocompatible flexible electronics,particularly for wearable and implantable ***,in recent years,more attention has been paid to the investigation of the functional characteristics of silk fibroin;such as the dielectric properties,piezoelectric properties,strong ability to lose electrons,and sensitivity to environmental ***,this paper not only reviews the preparation technologies for various forms of silk fibroin and the recent progress in the use of silk fibroin as a fundamental material but also focuses on the recent advaneed works in which silk fibroin serves as functional *** on ally,the challenges and future development of silk fibroin-based flexible electronics are summarized.

关键词： fibroin silk attractive

Assay of mitochondrial functions by resazurin in vitro

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Acta Pharmacologica Sinica 2004年第3期25卷 131-135页

作者： hai-xia zhang,Guan-hua DU2,Jun-tian zhang Institute of Materia Medica,Peking Union Medical College & Chinese Academy of Medical Sciences,Beijing100050,China Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical SciencesBeijing 100050 China

AIM: To study the mechanism of resazurin as indicator of mitochondrial function and to develop a rapid and sensitive assay for measuring metabolic activity of isolated mitochondria from rat liver in vitro. METHODS: The screening was carried out on 96-well microtitre plates by monitoring fluorescence intensity of resazurin reduced by mitochondria. Experimental conditions were optimized and influences of several inhibitors on mitochondrial func- tion were observed. RESULTS: Fluorescence intensity increased in a linear manner when the mitochondrial protein concentration from 5 to 50 μg protein per well was incubated with resazurin (5 μmol/L) during 230 min period at 37 oC. Edetic acid could promote the reduction of resazurin in mitochondria. The fluorescence intensity decreased greatly after pretreatment with NaN3, antimycin A, carbonyl cyanide p-trifluoromethoxyphenylhydrazone (FCCP), and oligomycin compared with the control. However, the typical complex I inhibitor, rotenone enhanced the fluorescence intensity without mitochondria. CONCLUSION: Using resazurin to determine mitochondrial func- tion is sensitive, inexpensive and could be easily automated for high throughput screening.

关键词： resazurin drug screening mitochondria

Nuclei-rich galvanizing strategy for suppressing zinc dendrite growth

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Rare Metals 2024年第8期43卷 4016-4018页

作者： hai-xia Wu Kai-Lu Guo College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China

The uncontrolled growth of zinc dendrites on zinc anode hinders the application of zinc ion *** solve this problem,Lu's group proposed a nuclei-rich galvanizing strategy for suppressing the zinc dendrite *** allows the nuclei-rich zinc electrode to cycle steadily for1200 h and have a high Coulombic efficiency of 99.7%at15 mA·cm^(-2)with a deposited amount of 10 mAh·cm^(-2).Moreover,the Zn-MnO_(2) battery with a low N/P ratio of 1.9exhibited sustained cycling life.

关键词： cycling sustained battery

Zeolite polymer membrane as protective interface for Mg battery

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Rare Metals 2024年第9期43卷 4636-4638页

作者： hai-xia Wu Kai-Lu Guo College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal University

Excessive electrolyte decomposition seriously determines the performance of high-voltage Mg batteries. In Nazar?s work, the strategy using a zeolite polymer membrane as a protective interface was proposed to restrain the electrolyte decomposition. This strategy could boost Mg plating/stripping performance up to 6000 h in zeolite/Mg|zeolite/Mg symmetric cells and 91%capacity retention in zeolite/Mg||Mo3S4battery after 200 *** storage devices have been intensively explored because of their important roles in our daily lives [1D3].

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Freeze-dried Si-Ni-San powder can ameliorate high fat diet-induced non-alcoholic fatty liver disease

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World Journal of Gastroenterology 2019年第24期25卷 3056-3068页

作者： Feng Zhu Yong-Min Li Ting-Ting Feng Yue Wu hai-xia zhang Guo-Yin Jin Jian-Ping Liu Department of Traditional Chinese Medicine Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina Department of Gastroenterology People’s Hospital of Changshou DistrictChongqing 401220China

BACKGROUND Non-alcoholic fatty liver disease(NAFLD)is a common chronic liver disease ***,to date,there is no ideal therapy for this *** To study the effects of Si-Ni-San freeze-dried powder on high fat diet-induced NAFLD in *** Twenty-four male C57BL/6 mice were randomized into three groups of *** control group(CON)was allowed ad libitum access to a normal chow *** high fat diet group(FAT)and Si-Ni-San group(SNS)were allowed ad libitum access to a high fat *** SNS group was intragastrically administered Si-Ni-San freeze-dried powder(5.0 g/kg)once daily,and the CON and FAT groups were intragastrically administered distilled *** 12 wk,body weight,liver index,visceral fat index,serum alanine aminotransferase(ALT),portal lipopoly-saccharide(LPS),liver tumor necrosis factor(TNF)-αand liver triglycerides were *** microbiota were analyzed using a 16S r DNA sequencing *** Compared with the FAT group,the SNS group exhibited decreased body weight,liver index,visceral fat index,serum ALT,portal LPS,liver TNF-αand liver triglycerides(P<0.05).Intestinal microbiota analysis showed that the SNS group had different bacterial composition and function compared with the FAT *** particular,Oscillospira genus was a bacterial biomarker of SNS group *** The beneficial effects of Si-Ni-San freeze-dried powder on high fat diet-induced NAFLD in mice may be associated with its anti-inflammatory and changing intestinal microbiota effects.

关键词： Nonalcoholic fatty liver disease Si-Ni-San High fat diet Intestinal microbiota Inflammation

A Novel Approach for Rapid Evaluating Cavitation Erosion Resistance of Metallic Materials

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Acta Metallurgica Sinica(English Letters) 2024年第7期37卷 1231-1237页

作者： Yu Li Zhenbo Qin xiaoyang Du Da-hai xia Zepeng Gao Yiwen zhang Zhong Wu Wenbin Hu Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin300072China Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) Tianjin UniversityTianjin300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou350207China

For the evaluation of cavitation erosion resistance of metallic materials,it has always been a time-consuming technical *** paper innovatively proposed a parameter named cavitation hardening rate to characterize the plastic deformation and work hardening behavior of metallic materials during the cavitation process and then found a positive correlation between cavitation hardening rate and strain hardening ***,the relationship between cavitation volume loss and strain hardening index was obtained,and a simple and rapid evaluation method for cavitation erosion resistance was established.

关键词： Cavitation erosion Evaluation method Cavitation hardening rate Volume loss

Seasonal thermal energy storage using natural structures:GIS-based potential assessment for northern China

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Building Simulation 2024年第4期17卷 561-574页

作者： Yichi zhang Jianjun xia Midea HVAC Heating&Ventilation Equipment Co. LtdFoshan528311China Building Energy Research Center Tsinghua UniversityBeijing100084China

Seasonal thermal energy storage(STES)allows storing heat for long-term and thus promotes the shifting of waste heat resources from summer to winter to decarbonize the district heating(DH)*** being a promising solution for sustainable energy system,large-scale STES for urban regions is lacking due to the relatively high initial investment and extensive land *** close the gap,this study assesses the potentials of using two naturally available structures for STES,namely valley and ground pit *** on geographical information system(GIS)methods,the available locations are searched from digital elevation model and selected considering several criteria from land uses and construction *** costs of dams to impound the reservoir and the yielded storage capacities are then quantified to guide the choice of suitable *** assessment is conducted for the northern China where DH systems and significant seasonal differences of energy demand *** total,2,273 valley sites and 75 ground pit sites are finally identified with the energy storage capacity of 15.2 billion GJ,which is much larger than the existing DH demand in northern *** results also prove that 682 valley sites can be achieved with a dam cost lower than 20 CNY/m^(3).By conducting sensitivity analysis on the design dam wall height and elevations,the choices of available natural structures are expanded but practical issues about water pressures and constructions are also ***,the identified sites are geographically mapped with nearest urban regions to reveal their roles in the DH *** general,560 urban regions are found with potential STES units and most of them have STES storage capacities larger than their own DH *** novel planning methodology of this study and publicly available datasets create possibilities for the implementations of large-scale STES in urban DH systems.

关键词： seasonal thermal energy storage geographical information system district heating water reservoir