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Vertically aligned Ni/NiO nanocomposites with abundant oxygen deficient hetero-interfaces for enhanced overall water splitting

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Science China Chemistry 2022年第10期65卷 1885-1894页

作者： Hongxia wang Meiyan Cui Gaoliang Fu Jiaye Zhang Xingyu ding Irene Azaceta Matthew Bugnet Demie M.Kepaptsoglou Vlado K.Lazarov Victor Ade la Peña O’Shea Freddy E.Oropeza Kelvin H.L.Zhang State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou 450006China Department of Physics University of YorkHeslingtonYorkYO105DDUK SuperSTEM Laboratory SciTech Daresbury CampusDaresbury WA44ADUK School of Chemical and Process Engineering Univeristy of LeedsLeeds LS29JTUK Univ Lyon CNRSINSA LyonUCBLMATEISUMR 551069621 VilleurbanneFrance Photoactivated Processes Unit IMDEA Energy InstituteParque Tecnológico de MóstolesAvda.Ramón de la Sagra 328935 MóstolesMadridSpain

The design of heterostructured transition metal-based electrocatalysts with controlled composition and interfaces is key to increasing the efficiency of the water electrolysis and the elucidation of reaction *** this work,we report the synthesis of well-controlled vertically aligned Ni/NiO nanocomposites consisting of Ni nanoclusters embedded in NiO,which result in highly efficient electrocatalysts for overall water *** show that such a high catalytic efficiency toward both the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER)originates from a synergetic effect at Ni/NiO interfaces that significantly reduces the energy barrier for water dissociation,and favours the formation of reactive H*intermediates on the Ni side of the interface,and OH_(ads) on the NiO side of the interface.A study of water chemisorption based on near-ambient pressure photoelectron spectroscopy indicates that the abundant hetero-interfaces in Ni/NiO nanocomposite promote the dissociation of water with a three-fold increase in the surface concentration of OH_(ads) compared with pure *** functional theory calculations indicate that Ni/NiO interface leads to the reduction of the water dissociation energy barrier due to a high concentration of oxygen vacancies at NiO side of the interface,whereas the formation of highly active metallic Ni sites with an optimal value of Gibbs free energy of H*(ΔG_(H*)=−0.16 eV)owes to a favourable adjustment of the electron energetics at the interface,thus accelerating the overall electrochemical water splitting.

关键词： water splitting hydrogen evolution reaction electronic structure heterostructure vertically aligned nanocomposites

Machine learning for molecular thermodynamics

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Chinese Journal of Chemical Engineering 2021年第3期34卷 227-239页

作者： Jiaqi ding Nan Xu Manh Tien Nguyen Qi Qiao Yao Shi Yi He Qing Shao College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310027China Chemical and Materials Engineering Department University of KentuckyLexingtonKY 40506USA Key Laboratory of Biomass Chemical Engineering of Ministry of Education Zhejiang UniversityHangzhou 310027China Department of Chemical Engineering University of WashingtonSeattleWA 98195USA

Thermodynamic properties of complex systems play an essential role in developing chemical engineering *** remains a challenge to predict the thermodynamic properties of complex systems in a wide range and describe the behavior of ions and molecules in complex *** learning emerges as a powerful tool to resolve this issue because it can describe complex relationships beyond the capacity of traditional mathematical *** minireview will summarize some fundamental concepts of machine learning methods and their applications in three aspects of the molecular thermodynamics using several *** first aspect is to apply machine learning methods to predict the thermodynamic properties of a broad spectrum of systems based on known *** second aspect is to integer machine learning and molecular simulations to accelerate the discovery of *** third aspect is to develop machine learning force field that can eliminate the barrier between quantum mechanics and all-atom molecular dynamics *** applications in these three aspects illustrate the potential of machine learning in molecular thermodynamics of chemical *** will also discuss the perspective of the broad applications of machine learning in chemical engineering.

关键词： Machine learning Thermodynamic properties Molecular engineering Molecular simulation Force field

Development of an Agrobacterium-mediated CRISPR/Cas9 system in pea(Pisum sativum L.)

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The Crop Journal 2023年第1期11卷 132-139页

作者： Guan Li Rong Liu Rongfang Xu Rajeev KVarshney Hanfeng ding Mengwei Li Xin Yan Shuxian Huang Juan Li Dong wang Yishan Ji Chenyu wang Junguang He Yingfeng Luo Shenghan Gao Pengcheng Wei Xuxiao Zong Tao Yang National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Key Laboratory of Rice Genetic Breeding of Anhui Province Rice Research InstituteAnhui Academy of Agricultural SciencesHefei 230031AnhuiChina State Agricultural Biotechnology Centre Centre for Crop and Food InnovationFood Futures InstituteMurdoch UniversityMurdochWA 6150Australia Institute of Crop Germplasm Resources Shandong Academy of Agricultural Sciences/Shandong Provincial Key Laboratory of Crop Genetic ImprovementEcology and PhysiologyJinan 250100ShandongChina Zhejiang Xinnan Chemical Industrial Group Co. Ltd.Hangzhou 311300ZhejiangChina State Key Laboratory of Microbial Resources Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China

Pea(Pisum sativum L.)is an annual cool-season legume *** to its role in sustainable agriculture as both a rotation and a cash crop,its global market is expanding and increased production is urgently *** both technical and regulatory reasons,neither conventional nor transgenic breeding techniques can keep pace with the demand for increased *** answer to this challenge,CRISPR/Cas9 genome editing technology has been gaining traction in plant biology and crop breeding in recent ***,there are currently no reports of the successful application of the CRISPR/Cas9 genome editing technology in *** developed a transient transformation system of hairy roots,mediated by Agrobacterium rhizogenes strain K599,to validate the efficiency of a CRISPR/Cas9 *** optimization resulted in an efficient vector,*** used this optimized CRISPR/Cas9 system to edit the pea phytoene desaturase(PsPDS)gene,causing albinism,by Agrobacterium-mediated genetic *** is the first report of successful generation of gene-edited pea plants by this route.

关键词： Agrobacterium-mediated transformation CRISPR/Cas9 Pea Genome editing

2020 roadmap on pore materials for energy and environmental applications

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Chinese Chemical Letters 2019年第12期30卷 2110-2122页

作者： Zengxi Wei Bing ding Hui Dou Jorge Gascon Xiang-Jian Kong Yujie Xiong Bin Cai Ruiyang Zhang Ying Zhou Mingce Long Jie Miao Yuhai Dou ding Yuan Jianmin Ma School of Physics and Electronics Hunan UniversityChangsha 410082China Jiangsu Key Laboratory of Electrochemical Energy-Storage Technologies College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016China King Abdullah University of Science and Technology KAUST Catalysis Center(KCC)Advanced Catalytic MaterialsThuwal 23955Saudi Arabia State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Hefei National Laboratory for Physical Sciences at the Microscale and School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Physical Science Division Pacific Northwest National LaboratoryRichlandWA 99352United States State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China The Center of New Energy Materials and Technology School of Materials Science and EngineeringSouthwest Petroleum UniversityChengdu 610500China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Centre for Clean Environment and Energy Gold Coast CampusGriffith UniversityGold Coast 4222Australia Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationZhengzhou UniversityZhengzhou 450002China

Porous materials have attracted great attention in energy and environment applications,such as metal organic frameworks(MOFs),metal aerogels,carbon aerogels,porous metal *** materials could be also hybridized with other materials into functional composites with superior *** high specific area of porous materials offer them the advantage as hosts to conduct catalytic and electrochemical *** one hand,catalytic reactions include photocatalytic,p ho toe lectrocatalytic and electrocatalytic reactions over some *** the other hand,they can be used as electrodes in various batteries,such as alkaline metal ion batteries and electrochemical *** far,both catalysis and batteries are extremely attractive *** are also many obstacles to overcome in the exploration of these porous *** research related to porous materials for energy and environment applications is at extremely active stage,and this has motivated us to contribute with a roadmap on ’porous materials for energy and environment applications’.

关键词： Metal organic frameworks Zeolitic imidazolate frameworks Covalent organic frameworks Aerogels Photocatalysis Photoelectrocatalysis Electrocatalysis Metal-ion batteries Electrochemical capacitors

Spatial homogenization of soil-surface pollen assemblages improves the reliability of pollen-climate calibration-set

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Science China Earth Sciences 2020年第11期63卷 1758-1766页

作者： Fang TIAN Xianyong CAO Ran ZHANG Qinghai XU Wei ding Xingqi LIU Baolin PAN Jianhui CHEN College of Resource Environment and Tourism Capital Normal UniversityBeijing 100048China Alpine Paleoecology and Human Adaptation Group(ALPHA) Key Laboratory of Alpine EcologyInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China College of Resources and Environment Sciences Hebei Normal UniversityShijiazhuang 050024China Institute of Geological Sciences PalaeontologyFree University of BerlinBerlin 12249Germany Key Laboratory of Western China's Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China

To make a reliable reconstruction of past climate from soil-surface modern pollen,it is necessary to reduce the sources of *** this paper,pollen percentages of the sub-continental scale modern pollen-climate dataset from China and Mongolia(with 68%soil-surface samples)are homogenized at various spatial scales.A tailored calibration-set is then applied to lake sediment-surface pollen assemblages from north-central China to evaluate their predictive *** indicate that spatial homogenization of modern pollen percentages can increase the proportion of inertia explained by climatic variables in CCA and improve the model performance of leave-one-out cross-validation using ***-surface pollen assemblages can thus be employed into a calibration-set for reliable climate estimation and they perform better when the calibration-set has been locally ***-scale(e.g.,radii 2,5,or 10 km)homogenization reduces the local noise in soil-surface pollen assemblages and improves the cross-validated performance,while broader scale homogenization(more than 20 km radius)blurs the pollen-climate *** sediment-surface pollen assemblages from close to the shore could contain pollen grains transported by rivers or from the shore vegetation and thus fail to represent regional climate well like the assemblages from the central part and deep-water area of lake.

关键词： North-central China Soil-surface pollen Climate reconstruction wa-PLS

Three-Dimensional Self-assembled Hairball-Like VS4 as High-Capacity Anodes for Sodium-Ion Batteries

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Nano-Micro Letters 2020年第3期12卷 142-154页

作者： Shuangshuang ding Bingxin Zhou Changmiao Chen Zhao Huang Pengchao Li Shuangyin wang Guozhong Cao Ming Zhang Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education Hunan Provincial Key Laboratory of Low‑Dimensional Structural Physics and DevicesSchool of Physics and ElectronicsHunan UniversityChangsha 410082People’s Republic of China College of Electrical Engineering and New Energy Three Gorges UniversityYichang 443002HubeiPeople’s Republic of China State Key Laboratory of Chemo/Biosensing and Chemometrics Provincial Hunan Key Laboratory for Graphene Materials and DevicesCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082People’s Republic of China Department of Materials Science and Engineering University of WashingtonSeattleWA 98195USA

Sodium-ion batteries(SIBs)are considered to be attractive candidates for large-scale energy storage systems because of their rich earth abundance and consistent ***,there are still challenges in developing desirable anode materials that can accommodate rapid and stable insertion/extraction of Na+and can exhibit excellent electrochemical ***,the self-assembled hairball-like VS4 as anodes of SIBs exhibits high discharge capacity(660 and 589 mAh g−1 at 1 and 3 A g−1,respectively)and excellent rate property(about 100%retention at 10 and 20 A g−1 after 1000 cycles)at room ***,the VS4 can also exhibit 591 mAh g−1 at 1 A g−1 after 600 cycles at 0°*** unlike traditional mechanism of VS4 for Na+storage was proposed according to the dates of ex situ characterization,cyclic voltammetry,and electrochemical kinetic *** capacities of the final stabilization stage are provided by the reactions of reversible transformation between Na2S and S,which were considered the reaction mechanisms of Na–S *** work can provide a basis for the synthesis and application of sulfur-rich compounds in fields of batteries,semiconductor devices,and catalysts.

关键词： VS4 Sodium-ion batteries Low-temperature batteries Reaction kinetics Na+storage mechanism

Simultaneous enhancement of mechanical and shape memory properties by heat-treatment homogenization of Ti_(2)Ni precipitates in TiNi shape memory alloy fabricated by selective laser melting

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Journal of Materials Science & Technology 2022年第6期101卷 205-216页

作者： H.Z.Lu L.H.Liu C.Yang X.Luo C.H.Song Z.wang J.wang Y.D.Su Y.F.ding L.C.Zhang Y.Y.Li National Engineering Research Center of Near-net-shape Forming for Metallic Materials South China University of TechnologyGuangzhou 510640China Musculoskeletal Oncology Department Sun Yat-Sen University Cancer CenterGuangzhouGuangdong ProvinceChina Shenyang Aircraft Design and Research Institute Shenyang 110035China Guangdong Huayi Plumbing Fittings Industry Co. Ltd.Kaiping 529321China School of Engineering Edith Cowan University270 Joondalup DriveJoondalupPerthWA 6027Australia

The excellent shape memory and mechanical properties of Ti Ni shape memory alloys(SMAs) fabricated using selective laser melting(SLM) are highly desirable for a wide range of critical applications. In this study, we examined the simultaneous enhancement of mechanical and shape memory properties using heat-treatment homogenization of Ti_(2)Ni precipitates in a Ti_(50.6)Ni_(49.4)SMA fabricated using SLM. Specifically, because of the complete solution treatment, nanoscale spherical Ti_(2)Ni precipitates were homogeneously dispersed throughout the grain interior. Interestingly, the resultant SMA exhibited an ultrahigh tensile strength of 880 ± 13 MPa, a large elongation of 22.4 ± 0.4%, and an excellent shape memory effect, with a recovery rate of > 98% and ultrahigh recoverable strain of 5.32% after ten loading–unloading cycles. These simultaneously enhanced properties are considerably superior than those of most previously reported Ti Ni SMAs fabricated using additive manufacturing. Fundamentally, the enhancement in tensile strength is ascribed to precipitation strengthening and work hardening, and the large plasticity is mainly attributed to the homogeneous nanoscale globular Ti_(2)Ni precipitates, which effectively impeded the rapid propagation of microcracks. Furthermore, the enhanced shape memory properties are derived from the suppression of dislocation movement and formation of retained stabilized martensite by the presence of high-density dislocations, nanoscale Ti_(2)Ni precipitates, and abundant interfaces. The obtained results provide insight into the enhancement of the two types of properties in Ti Ni SMAs and will accelerate the wider application of SMAs.

关键词： Shape memory alloy Selective laser melting Heat treatment Mechanical properties Shape memory properties

Microneedle array facilitates hepatic sinusoid construction in a large-scale liver-acinus-chip microsystem

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微系统与纳米工程(英文) 2023年第3期9卷 333-346页

作者： Shibo Li Chengpan Li Muhammad Imran Khan Jing Liu Zhengdi Shi Dayong Gao Bensheng Qiu Weiping ding Department of Electronic Engineering and Information Science University of Science and Technology of ChinaHefeiAnhui 230027China Department of Oncology the First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui 230001China Center for Biomedical Imaging University of Science and Technology of ChinaHefeiAnhui 230027China School of Biology Food and EnvironmentHefei UniversityHefeiAnhui 230601China Department of Mechanical Engineering University of WashingtonSeattleWA 98195USA

Hepatic sinusoids play a key role in maintaining high activities of liver cells in the hepatic ***,the construction of hepatic sinusoids has always been a challenge for liver chips,especially for large-scale liver ***,we report an approach for the construction of hepatic *** this approach,hepatic sinusoids are formed by demolding a self-developed microneedle array from a photocurable cell-loaded matrix in a large-scale liver-acinus-chip microsystem with a designed dual blood *** sinusoids formed by demolded microneedles and spontaneously self-organized secondary sinusoids can be clearly *** from significantly enhanced interstitial flows by formed hepatic sinusoids,cell viability is witnessed to be considerably high,liver microstructure formation occurs,and hepatocyte metabolism is *** addition,this study preliminarily demonstrates the effects of the resulting oxygen and glucose gradients on hepatocyte functions and the application of the chip in drug *** work paves the way for the biofabrication of fully functionalized large-scale liver bioreactors.

关键词： needle hepatic metabolism

water molecule-induced hydrogen bonding between cellulose nanofibers toward highly strong and tough materials from wood aerogel

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Chinese Chemical Letters 2021年第10期32卷 3105-3108页

作者： Xiaoshuai Han Zhenxing wang Linhu ding Lian Chen Feng wang Junwen Pu Shaohua Jiang Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy Beijing Forestry UniversityBeijing 100083China

Lightweight,highly strong and bio-based structural materials remain a long-lasting ***,inspired by nacre,a lightweight and high mechanical performance cellulosic material was fabricated via a facile and effective top-down approach and the resulting material has a high tensile strength of149.21 MPa and toughness of 1.91 MJ/m^(3).More specifically,the natural balsawood(NW) was subjected to a simple chemical treatment,removing most lignin and partial hemicellulose,follow by freeze-drying,forming wood aerogel(wa).The delignification process produced many pores and exposed numerous aligned cellulose ***,the wa absorbed a quantity of moisture and was directly densified to form above high-performance cellulosic *** treatment imitates highly ordered"brick-and-mortar" arrangement of nacre,in which water molecules plays the role of mortar and cellulose nanofibrils make the brick *** lightweight and good mechanical properties make this material promising for new energy car,aerospace,*** paper also explains the strengthening mechanism for making biomimetic materials by water molecules-induced hydrogen bonding and will open a new path for designing high-performance bio-based structural materials.

关键词： Wood aerogel Cellulose nanofibers water molecules Hydrogen bonding Strength and toughness