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Journal of Energy Chemistry 2022年第12期75卷 260-266,I0007页

作者： Shiqian Du Ru Chen Wei Chen Hongmei Gao Jianfeng Jia Zhaohui Xiao Chao Xie Hao Li Li Tao Jia Huo Yanyong Wang Shuangyin Wang State key laboratory of Chem/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringAdvanced Catalytic Engineering Research Center of the Ministry of EducationHunan UniversityChangsha 410082HunanChina Shenzhen Research Institute of Hunan University Shenzhen 518057GuangdongChina key laboratory of Magnetic Molecules and Magnetic Information materials(ministry of education) School of Chemistry and Material ScienceShanxi Normal UniversityTaiyuan 030031ShanxiChina

1.Introduction Hydrogen is an ideal energy carrier to tackle the energy crisis and greenhouse effect,because of its high energy density and low emission.The production,storage and transportation of hydrogen are key factors to the practical application of hydrogen energy.As the scientific and technological understanding of the electrochemical devices was advancing in the past few decades,water electrolyzers based on the proton exchange membrane (PEM) have attracted much focus for its huge potential on the production of hydrogen via water splitting.PEM electrolyzers use perfluorinated sulfonic acid (PFSA) based membranes as the electrolyte.

关键词： PEM water electrolyzers Oxygen evolution reaction Electrocatalysts Defect engineering

Advancing the pressure sensing performance of conductive CNT/PDMS composite film by constructing a hierarchical-structured surface

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Nano materials Science 2023年第4期5卷 343-350页

作者： Ye Zhao Taoyu Shen Minyue Zhang Rui Yin Yanjun Zheng Hu Liu Hongling Sun Chuntai Liu Changyu Shen key laboratory of materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhouHenan450002China China Astronaut Research and Training Center Beijing100094China

Flexible pressure sensors have attracted wide attention due to their applications to electronic skin,health monitoring,and human-machine interaction.However,the tradeoff between their high sensitivity and wide response range remains a challenge.Inspired by human skin,we select commercial silicon carbide sandpaper as a template to fabricate carbon nanotube(CNT)/polydimethylsiloxane(PDMS)composite film with a hierarchical structured surface(h-CNT/PDMS)through solution blending and blade coating and then assemble the h-CNT/PDMS composite film with interdigitated electrodes and polyurethane(PU)scotch tape to obtain an h-CNT/PDMS-based flexible pressure sensor.Based on in-situ optical images and finite element analysis,the significant compressive contact effect between the hierarchical structured surface of h-CNT/PDMS and the interdigitated electrode leads to enhanced pressure sensitivity and a wider response range(0.1661 kPa^(-1),0.4574 kPa^(-1)and 0.0989 kPa^(-1)in the pressure range of 0–18 kPa,18–133 kPa and 133–300 kPa)compared with planar CNT/PDMS composite film(0.0066 kPa^(-1)in the pressure range of 0–240 kPa).The prepared pressure sensor displays rapid response/recovery time,excellent stability,durability,and stable response to different loading modes(bending and torsion).In addition,our pressure sensor can be utilized to accurately monitor and discriminate various stimuli ranging from human motions to pressure magnitude and spatial distribution.This study supplies important guidance for the fabrication of flexible pressure sensors with superior sensing performance in next-generation wearable electronic devices.

关键词： Flexible pressure sensor Hierarchical structure Polydimethylsiloxane Carbon nanotubes Electronic skin

Significantly improved photocatalysis-self-Fenton degradation performance over g-C3N4 via promoting Fe(Ⅲ)/Fe(Ⅱ)cycle

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Rare Metals 2022年第7期41卷 2429-2438页

作者： Le Chen Xin-Xia He Ze-Han Gong Jia-Lian Li Yang Liao Xiao-Ting Li Jun Ma College of Chemistry and materials Science Sichuan Normal UniversityChengdu 610068China Department of Science and Technology Sichuan Normal UniversityChengdu 610068China key laboratory of Land Resources Evaluation and Monitoring in Southwest Ministry of EducationChengdu 610068China

Photocatalysis-self-Fenton system,i.e.,photo-catalytic H_(2)O_(2)generation and utilization in situ for OH radials production to remove organic pollutants with high-fluent degradation and mineralization performance pos-sesses such advantages as cleanliness,efficiency and safety.However,its degradation activity always suffers from the Fe(Ⅲ)/Fe(Ⅱ)cycle.For this reason,graphitic carbon interface-modified g-C_(3)N_(4)(CUCN)was fabricated to remarkably improve photocatalysis-self-Fenton degra-dation activity.The experiment results indicated that CUCN-2%photocatalyst,in which the loading percentage of graphitic carbon was 2%,demonstrated the optimum degradation performance among all the counterparts.The mineralization degree for RhB in 3 h over CUCN-2%reached 63.77%,nearly 3.35-fold higher than the pristine g-C_(3)N_(4).The significantly improved mineralization efficiency was ascribed to the promoted Fe(Ⅲ)/Fe(Ⅱ)cycle by photogenerated electrons,which leading to the higher utilization efficiency of H_(2)O_(2)through Fenton reaction,thereby producing more hydroxyl radicals.It is anticipated that our work could provide new insights for the design of photocatalysis-self-Fenton system with exceptional degradation performance for actual photocat-alytic applications.

关键词： g-C_(3)N_(4) Photocatalysis-self-Fenton degradation Fe(Ⅲ)/Fe(Ⅱ)cycle Interface modification Graphitic carbon

Artificial Photosynthesis(AP):From Molecular Catalysts to Heterogeneous materials

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Chemical Research in Chinese Universities 2022年第3期38卷 688-697页

作者： JI Yuancheng XU Jiayun SUN Hongcheng LIU Junqiu State key laboratory of Supramolecular Structure and materials College of ChemistryJilin UniversityChangchun130012P.R.China College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of EducationKey Laboratory of Organosilicon Material Technology of Zhejing ProvinceHangzhou Normal UniversityHangzhou311121P.R.China

The development of green and renewable energy sources is in high demand due to energy shortage and productivity development.Artificial photosynthesis(AP)is one of the most effective ways to address the energy shortage and the greenhouse effect by converting solar energy into hydrogen and other carbon-based high value-added products through the understanding of the mechanism,structural analysis,and functional simulation of natural photosynthesis.In this review,the development of AP from natural catalysts to artificial catalysts is described,and the processes of oxygen production,hydrogen production,and carbon fixation are sorted out to understand the properties and correlations of the core functional components in natural photosynthesis,to provide a better rational design and optimization for further development of advanced heterogeneous materials.

关键词： Artificial photosynthesis Oxygen evolution reaction Hydrogen evolution reaction CO_(2)reduction reaction Heterogeneous material

Recent progress in the synthesis of novel two-dimensional van der Waals materials

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National Science Review 2022年第5期9卷 57-76页

作者： Renji Bian Changcun Li Qing Liu Guiming Cao Qundong Fu Peng Meng Jiadong Zhou Fucai Liu Zheng Liu School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China School of Electrical and Electronic Engineering Nanyang Technological University CNRS-International-NTU-Thales Research Alliance (CINTRA) Yangtze Delta Region Institute (Huzhou) University of Electronic Science and Technology of China key Lab of Advanced Optoelectronic Quantum Architecture and Measurement(ministry of education) Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems and School of Physics Beijing Institute of Technology School of materials Science and Engineering Nanyang Technological University

The last decade has witnessed the significant progress of physical fundamental research and great success of practical application in two-dimensional(2D) van der Waals(vdW) materials since the discovery of graphene in 2004.To date,vdW materials is still a vibrant and fast-expanding field,where tremendous reports have been published covering topics from cutting-edge quantum technology to urgent green energy,and so on.Here,we briefly review the emerging hot physical topics and intriguing materials,such as 2D topological materials,piezoelectric materials,ferroelectric materials,magnetic materials and twistronic heterostructures.Then,various vdW material synthetic strategies are discussed in detail,concerning the growth mechanisms,preparation conditions and typical examples.Finally,prospects and further opportunities in the booming field of 2D materials are addressed.

关键词： two-dimensional materials synthesis exfoliation chemical vapor deposition

Trimester-specific urinary metabolome alterations associated with gestational diabetes mellitus:A study in different pregnancy stages

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Chinese Chemical Letters 2022年第6期33卷 3139-3143页

作者： Hongzhi Zhao Yuanyuan Zheng Lin Zhu Li Xiang Shunqing Xu Zongwei Cai State key laboratory of Environmental and Biological Analysis Department of ChemistryHong Kong Baptist UniversityHong KongChina ministry of education key laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China key laboratory of Environment and Health Ministry of Education&Ministry of Environmental Protectionand State Key Laboratory of Environmental HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430074China

Gestational diabetes mellitus(GDM),a frequently-occurring disease during pregnancy,may cause some adverse healthy outcome of both mother and offspring.However,the knowledge about metabolite alterations during the pathogenesis and development process is limited.Here,a large longitudinal nontargeted metabolomics study of 195 pregnant women(64 women with subsequently developed GDM and131 healthy controls)was conducted.Each participant provided urine samples at three timepoints during early,middle and late pregnancy,respectively.The metabolic profiles of 585 urine samples(195×3)were measured by using ultra-high performance liquid chromatography coupled with Orbitrap high-resolution mass spectrometry.Among the 56 identified metabolites,the levels of eight metabolites increased and three ones decreased in the first trimester,the concentration of one metabolite increased and those of 20 decreased in the second trimester,as well as the levels of five metabolites increased and two decreased in the third trimester.After false discovery rate correction,the levels of valine and 5-acetamidovalerate in GDM group significantly increased in the first trimester,the levels of 1-methylguanine and 1,3-dihydro-(2 H)-indol-2-one significantly decreased in the second trimester and three metabolites(threonine,OH-octanedioyl-carnitine and pimelylcarnitine)increased and N-acetyltryptophan decreased in the third trimester,respectively.Six metabolites,such as pantothenic acid and threonine,had significant interaction effects between gestational stage(different trimester)and group(GDM or control).The differential metabolites were involved in“tryptophan metabolism”,“purine metabolism”,“valine,leucine and isoleucine degradation”and other pathways.The findings may provide insights into further pathogenesis study of GDM.

关键词： Gestational diabetes mellitus Non-targeted metabolomics Dynamic metabolic profile Maternal urine High-resolution mass spectrometry

In vitro and in vivo degradation behavior of poly(trimethylene carbonate-co-D,L-lactic acid)copolymer

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Regenerative Biomaterials 2017年第4期4卷 207-213页

作者： Zhengyu Ma Yi Wu Jing Wang Changsheng Liu Engineering Research Center for Biomedical materials of ministry of education School of Materials Science and EngineeeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China The State key laboratory of Bioreactor Engineering School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China key laboratory for ultrafine materials of ministry of education School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China

We present P(TMC-co-DLLA)copolymer with the molar ratio of TMC:DLLA紏15:85 was used to systematic study of in vivo and in vitro degradation behaviors.Dense homogeneous copolymer specimens were prepared by compression molding method.The in vitro and in vivo degradation were,respectively,performed at simulative body condition and implanted into rat’s subcutaneous condition.Investigations were followed via physicochemical and histological analysis such as SEM,GPC,DSC,FTIR and H&E stain.The results demonstrate that copolymeric material can degrade in phosphate buffer solution(PBS)and in rat’s body,and the in vivo degradation rate is faster.Obvious decline of molecule weight and mass loss has been observed,which led to the attenuation of mechanical strength.Furthermore,apart from the hydrolysis,macrophagocytes took part in the phagocytosis in vivo,indicating that degradation rate could be regulated by the combinational mechanism.It is concluded that P(TMC-co-DLLA)copolymer is a promising candidate for tissue repair.

关键词： P(TMC-co-DLLA) copolymer degradation tissue repair

CMW-Net: an adaptive robust algorithm for sample selection and label correction

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National Science Review 2023年第6期10卷 19-23页

作者： Jun Shu Xiang Yuan Deyu Meng School of Mathematics and Statistics Xi'an Jiaotong University ministry of education key Lab of Intelligent Networks and Network Security Xi'an Jiaotong University Peng Cheng laboratory Pazhou laboratory (Huangpu)

PROBLEM Deep neural networks (DNNs) have recently achieved impressive performance in various applications.Such successis largely attributed to massive but carefully labeled data expected to properly and sufficiently simulate testing environments.However,the data collection and annotation processes are often expensiveand time consuming,making obtained training datasets in real-life applications error prone,especially with data biasfrom ideal testing distributions.

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Mechanical Strong,Highly Adhesive,Recyclable and Transparent Supramolecular Silicone Coatings with Easy Water/Oil Sliding

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Chinese Journal of Polymer Science 2023年第11期41卷 1796-1804,I0010页

作者： Yu-Cai Lin Feng Chen Shou-Bin Yang Shu-Yue Gong Yu-Xiang Luo Fang-Fang Wei Fu-Chuan Ding Wei-Bin Bai Rong-Kun Jian Fujian key laboratory of Polymer materials Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical EngineeringCollege of Chemistry and Materials ScienceFujian Normal UniversityFuzhou 350007China

Traditional silicone materials have poor mechanical properties,poor interfacial adhesion and lack the ability to be reprocessed or recycled.Herein,we developed a novel strategy of incorporating dynamic noncovalent bonds(2-amino-4-hydroxy-6-methylpyrimidine(UPy))into side chain of silicone backbones to construct supramolecular silicone poly(urea-urethane)(SSPu)coatings with excellent mechanical performance,strong interfacial adhesion and multiple time recycling capability.Impressively,the prepared SSPu is endowed with simultaneously enhanced stiffness(272.0±23.2 MPa)and toughness(8.0±2.0 MJ·m^(-3)).Besides,SSPu shows strong interfacial adhesion(up to 9.0±1.3 MPa)to diverse substrate(stainless steel,aluminum,copper,epoxy and glass)with long term stability.Moreover,SSPu exhibits excellent multirecyclability and reusability without significantly decrease of its performance.In addition to the abovementioned features,the enrichment of siloxane backbones in the surface layer endows SSPu with robust repellency to water/oil.Our strategy provides a powerful route to fabricate a new multifunctional silicone elastomer.It is highly anticipated that our strategy can effectively extend the service life of silicone coating which can be applied in a wide variety of areas including self-cleaning,antifouling.

关键词： Silicong coating Supramolecular Adhesion Recyclable

Emerging two-dimensional nanocatalysts for electrocatalytic hydrogen production

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Chinese Chemical Letters 2022年第4期33卷 1831-1840页

作者： Hong Chen Yansong Zhou Wei Guo Bao Yu Xia key laboratory of Material Chemistry for Energy Conversion and Storage(ministry of education) Hubei Key Laboratory of Material Chemistry and Service FailureHubei Engineering Research Center for Biomaterials and Medical Protective MaterialsWuhan National Laboratory for OptoelectronicsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074China

Hydrogen energy could be a economic and powerful technology for sustainable future. Producing hydrogen fuel by electrochemical water splitting has attracted intense interest. Due to their physical and chemical properties, two-dimensional(2 D) nanomaterials have sparked immense interest in water electrocatalysis for hydrogen production. This review focuses on the emerging nanocatalysts in 2 D nanoarchitectures for electrocatalytic hydrogen production. The fundamentals of HER are firstly depicted, following the discussion of recent advances in typical 2 D electrocatalysts for HER. The insights into the relationship among the synthetic protocols, structure, catalytic performance and thermodynamics will be discussed in details. Finally, the outlooks regarding further development of 2 D nanocatalysts for HER are proposed.We hope this review will offer a comprehensive understanding in 2 D nanocatalysts to promote electrochemical hydrogen production.

关键词： Hydrogen evolution Electrocatalyst Two-dimensional Active sites Modification