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Rational design of Fe-N-C electrocatalysts for oxygen reduction reaction:From nanoparticles to single atoms

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Nano Research 2022年第3期15卷 1753-1778页

作者： Mengru Sun Changli Chen Menghao Wu danni zhou Zhiyi Sun Jianling Fan Wenxing Chen Yujing Li Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced MaterialsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Department of Physics and Engineering Technology Guilin Normal CollegeGuilin 541199China

As an alternative energy,hydrogen can be converted into electrical energy via direct electrochemical conversion in fuel *** important drawback of full cells is the sluggish oxygen reduction reaction(ORR)promoted by the high-loading of platinum-group-metal(PGM)***-N-C family has been received extensive attention because of its low cost,long service life and high oxygen reduction reaction activity in recent *** order to further enhance the ORR activity,the synthesis method,morphology regulation and catalytic mechanism of the active sites in Fe-N-C catalysts are *** paper reviews the research progress of Fe-N-C from nanoparticles to single *** structure-activity relationship and catalytic mechanism of the catalyst are studied and discussed,which provide a guidance for rational design of the catalyst,so as to promote the more reasonable design of Fe-N-C materials.

关键词： nanoparticle catalyst controlled structure regulation single atomic catalyst local atomic regulation synergistic effect

DEVELOPMENT OF AN AUTOMATIC WEIGHING PLATFORM FOR MONITORING BODYWEIGHT OF BROILER CHICKENS IN COMMERCIAL PRODUCTION

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Frontiers of Agricultural Science and Engineering 2023年第3期10卷 363-373页

作者： danni zhou Yi zhou Pengguang HE Lin YU Jinming PAN Lilong CHAI Hongjian LIN College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture Ministry of Agriculture and Rural AffairsHangzhou 310058China Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province Hangzhou 310058China Joint Research Center of Zhejiang University and Hefei Shenmu Information Science&Technology Company Hefei 230601China Department of Poultry Science University of GeorgiaAthensGA 30602USA

Bodyweight is a key indicator of broiler production as it measures the production efficiency and indicates the health of a ***,broiler weight(i.e.,bodyweight)is primarily weighed manually,which is timeconsuming and labor-intensive,and tends to create stress in *** study aimed to develop an automatic and stress-free weighing platform for monitoring the weight of floor-reared broiler chickens in commercial *** developed system consists of a weighing platform,a real-time communication terminal,computer software and a smart phone applet *** system collected weight data of chickens on the weighing platform at intervals of 6 s,followed by filtering of outliers and repeating *** performance and stability of this system was systematically evaluated under commercial production *** the adoption of data preprocessing protocol,the average error of the new automatic weighing system was only 10.3 g,with an average accuracy 99.5%with the standard deviation of 2.3%.Further regression analysis showed a strong agreement between estimated weight and the standard weight obtained by the established live-bird sales *** variance(an indicator of flock uniformity)of broiler weight estimated using automatic weighing platforms was in accordance with the standard *** weighing system demonstrated superior stability for different growth stages,rearing seasons,growth rate types(medium-and slow-growing chickens)and *** system is applicable for daily weight monitoring in floor-reared broiler houses to improve feeding management,growth monitoring and finishing day *** application in commercial farms would improve the sustainability of poultry industry.

关键词： automatic weighing weight monitoring floor housing uniformity precision poultry farming

维普期刊数据库

Interfacial engineering of 3D hollow CoSe_(2)@ultrathin MoSe_(2)core@shell heterostructure for efficient pH-universal hydrogen evolution reaction

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Nano Research 2022年第4期15卷 2895-2904页

作者： Lili Zhang Yuanting Lei danni zhou Chengli Xiong Zhuoli Jiang Xinyuan Li Huishan Shang Yafei Zhao Wenxing Chen Bing Zhang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Energy&Catalysis Center School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Department of Chemistry Tsinghua UniversityBeijing 100084China

Rational design and construction of low-cost and highly efficient electrocatalysts for hydrogen evolution reaction(HER)is meaningful but ***,a robust three dimensional(3D)hollow CoSe_(2)@ultrathin MoSe_(2)core@shell heterostructure(CoSe_(2)@MoSe_(2))is proposed as an efficient HER electrocatalyst through interfacial *** from the abundant heterogeneous interfaces on CoSe_(2)@MoSe_(2),the exposed edge active sites are maximized and the charge transfer at the hetero-interfaces is accelerated,thus facilitating the HER *** exhibits remarkable performance in pH-universal ***,it only needs an overpotential(η10)of 108 mV to reach a current density of 10 mA·cm^(-2)in 1.0 M KOH,outperforming most of the reported transition metal selenides *** functional theory(DFT)calculations unveil that the heterointerfaces synergistically optimize the Gibbs free energies of H2O and H^(*)during alkaline HER,accelerating the reaction *** present work may provide new construction guidance for rational design of high-efficient electrocatalysts.

关键词： transition metal selenides hydrogen evolution reaction core@shell heterostructure pH-universal

Rational design of asymmetric atomic Ni-P1N3 active sites for promoting electrochemical CO_(2)reduction

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Nano Research 2023年第2期16卷 2170-2176页

作者： Ming Qu Zhe Chen Zhiyi Sun danni zhou Wenjing Xu Hao Tang Hongfei Gu Tuo Liang Pengfei Hu Guangwen Li Yu Wang Zhuo Chen Tao Wang Binbin Jia Unconventional Petroleum Research Institute China University of Petroleum(Beijing)Beijing 102249China Center of Artificial Photosynthesis for Solar Fuels School of ScienceWestlake UniversityHangzhou 310024China Energy&Catalysis Center School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China School of Chemistry Beihang UniversityBeijing 100191China Research Institute of Aero-Engine Beihang UniversityBeijing 102206China Research Institude of Petroleum Processing Sinopec Group(SINOPEC)Beijing 100083China Shanghai Synchrotron Radiation Facilities Shanghai Institute of Applied PhysicsChinese Academy of ScienceShanghai 201204China

The atomic-level interfacial regulation of single metal sites through heteroatom doping can significantly improve the characteristics of the catalyst and obtain surprising ***,nickel single-site catalysts(SSCs)with dual-coordinated phosphorus and nitrogen atoms were developed and confirmed(denoted as Ni-PxNy,x=1,2 and y=3,2).In CO_(2)reduction reaction(CO_(2)RR),the CO current density on Ni-PxNy was significantly higher than that of Ni-N4 catalyst without phosphorus ***,Ni-P1N3 performed the highest CO Faradaic efficiency(FECO)of 85.0%–98.0%over a wide potential range of−0.65 to−0.95 V(*** reversible hydrogen electrode(RHE)).Experimental and theoretical results revealed that the asymmetric Ni-P1N3 site was beneficial to CO_(2)intermediate adsorption/desorption,thereby accelerating the reaction kinetics and boosting CO_(2)RR *** work provides an effective method for preparing well-defined dual-coordinated SSCs to improve catalytic performance,targetting to CO_(2)RR applications.

关键词： nickel single-site catalysts asymmetric coordination CO_(2)reduction reaction atomic interface

Effects of acid deposition control in China:a review based on responses of subtropical forests

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Frontiers of Environmental Science & Engineering 2024年第6期18卷 115-126页

作者： danni Xie Xiaodong Ge Lei Duan Jan Mulder School of Land Engineering Chang’an UniversityXi’an 710064China State Key Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China Faculty of Environmental Sciences and Natural Resource Management Norwegian University of Life SciencesBox 5003NO-1432ÅsNorway

For many decades,acid deposition used to pose a significant regional air pollution challenge in *** substantial emission control of anthropogenically derived sulfur and nitrogen containing gasses,both sulfur and nitrogen deposition,as well as the acid rain-affected area,have significantly decreased compared to their peak ***,particularly in the humid subtropics,are sensitive to acid deposition,as evidenced by soil acidification,sulfate and nitrate leaching in stream water,and elevated soil nitrous oxide *** in the total deposition of sulfur and nitrogen,caused a significant decline in sulfate and nitrate leaching from subtropical forest and subsequently in sulfate and nitrate concentrations in stream water,although there was about a 5-year *** delay may be attributed to the desorption of accumulated sulfate and continued elevated mineralization of accumulated nitrogen *** of nitrous oxide,a potent greenhouse gas,also declined in nitrogen-saturated subtropical forest soils,as soil water nitrate concentration ***,subtropical forests in China suffering from elevated acid deposition have begun to ***,the current levels of sulfur and nitrogen deposition continue to exceed the critical loads,i.e.,the assigned threshold levels in accordance with emission control policies,in more than 10%of the country’s land area,respectively,indicating remaining risks of acidification and ***,further emission reductions are urgently needed,also because they will help achieving goals related to air quality and nitrous oxide emissions.

关键词： Acidification Critical load Nitrous oxide Surface water chemistry Recovery

Palladium-catalyzed 2-pyridylmethyl-directed β-C(sp^3)—H activation and cyclization of aliphatic amides with gem-dibromoolefins:A rapid access to γ-lactams

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Chinese Chemical Letters 2018年第1期29卷 191-193页

作者： danni zhou Chunxia Wang Mingliang Li Zheng Long Jingbo Lan Key Laboratory of Green Chemistry and Technology of Ministry of Education College of ChemistrySichuan University

The direct Pd-catalyzed β-C（sp3）--H activation and cyclization of aliphatic amides bearing a removable 2-pyridylmethyl directing group with gem-dibromoolefins is described for the first time to construct a variety of γ-lactams, The resulting products with Z- and E-configurations can be easily separated and purified after the reaction, demonstrating the effectiveness and applicability of the method herein developed.

关键词： C(spS)-H activationPalladium-catalyzedgem-DibromoolefinsRemovable directing groupγ-Lactams

维普期刊数据库

Microalgae-based drug delivery system for tumor microenvironment photo-modulating and synergistic chemo-photodynamic therapy of osteosarcoma

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Engineered Regeneration 2024年第2期5卷 199-209页

作者： Feng Liang Xueying An Ruoxi Wang Wenshu Wu Lin Yang Yixin Zheng Qing Jiang Xingquan Xu danni Zhong Min zhou Eye Center The Second Affiliated HospitalZhejiang University School of MedicineHangzhou310000PR China Department of Orthopedics The First Affiliated HospitalZhejiang University School of MedicineHangzhou310000PR China State Key Laboratory of Pharmaceutical Biotechnology Division of Sports Medicine and Adult Reconstructive SurgeryDepartment of Orthopedic SurgeryNanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing210008PR China Zhejiang University-University of Edinburgh Institute(ZJU-UoE Institute) Zhejiang University School of MedicineZhejiang UniversityHaining314400PR China State Key Laboratory of Pharmaceutical Biotechnology Division of Sports Medicine and Adult Reconstructive SurgeryDepartment of Orthopedic SurgeryNanjing Drum Tower HospitalClinical College of Nanjing Medical UniversityNanjing210008PR China Institute of Translational Medicine Zhejiang UniversityHangzhou310029PR China Zhejiang University-Ordos City Etuoke Banner Joint Research Center Zhejiang UniversityHaining314400PR China

Osteosarcoma(OS)is one of the most common malignant tumors in children and young *** chemotherapy and other therapies are limited by low therapeutic efficiency,severe side effects and single therapeutic function,it is of high value to develop innovative therapies for precise and efficient treatment of ***,natural photo-synthetic microalgae(***,CV)were utilized as carriers for the chemotherapeutic agent doxorubicin(DOX)to create a multifunctional therapeutic platform(CV@DOX)for the photo-modulation of the tumor microenvi-ronment(TME)and synergistic chemo-photodynamic therapy of ***@DOX exhibited rapid drug release behavior in the acidic TME,improving the efficiency of chemotherapy against tumors and reducing side effects on other normal *** 650 nm laser irradiation,CV@DOX demonstrated the ability to effectively generate oxygen to alleviate tumor hypoxia and utilize the photosensitizing properties of chlorophyll in CV to produce an increased amount of reactive oxygen species(ROS),thereby enhancing photodynamic therapy(PDT).CV@DOX-mediated synergistic chemo-photodynamic therapy demonstrated efficacy in halting tumor progression in an orthotopic osteosarcoma mouse model by promoting tumor cell apoptosis,inhibiting tumor proliferation and ***,chlorophyll-assisted fluorescence imaging enabled monitoring of the distribution of CV@DOX in osteosarcoma after ***,CV@DOX did not cause significant hematological and tissue toxicity,and prevented DOX-induced cardiotoxicity,showing good in vivo ***,this work presents a novel TME-responsive and TME-modulating platform for imaging-guided multimodal osteosar-coma treatment.

关键词： Osteosarcoma Tumor hypoxia Photodynamic Chemotherapy Synergistic therapy

LH-Nts Neurons Regulate VTA Calcium Dynamics Via Releasing GABA and Nts

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Neuroscience Bulletin 2024年第4期40卷 550-552页

作者： danni Chen Yinfeng Yuan Zhihui Huang Yongjie Wang School of Pharmacy Hangzhou Normal UniversityHangzhou311121ZhejiangChina Key Laboratory of Element Class Anti-Cancer Chinese Medicines Engineering Laboratory of Development and Application of Traditional Chinese MedicinesCollaborative Innovation Center of Traditional Chinese Medicines of Zhejiang ProvinceHangzhou Normal UniversityHangzhou311121ZhejiangChina

The peripheral and central nervous systems have numerous examples of two or more neuroactive products co-existing in the same neuron[1],which can simultaneously be released as both fast-acting neurotransmitters and slow-acting regulatory neuropeptides[2].For example,neurons in the lateral hypothalamus(LH)release both irritant neurotensin(Nts)and inhibitory-aminobutyric acid(GABA),two counterproductive substances[3].LH-Nts neurons project to the ventral tegmental area(VTA)and form synaptic connections with dopamine(DA)neurons to regulate reward[4-6].More critically,VTA-DA neurons express the Nts receptor Ntsrl and play a crucial role in cognition,anesthesia,reward,and disgust[4,7,8].Nevertheless,a mechanistic understanding of how stimulation and inhibition work together to control the output of neural circuits remains *** is very difficult to selectively isolate these signaling pathways in cell and circuit-specific manners.

关键词： anesthesia stimulation dopamine

Predicting PM_(2.5) Concentration in the Yangtze River Delta Region Using Climate System Monitoring Indices and Machine Learning

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Journal of Meteorological Research 2024年第2期38卷 249-261页

作者： Jinghui MA Shiquan WAN Shasha XU Chanjuan WANG danni QIU Shanghai Typhoon Institute Shanghai Meteorological ServiceShanghai 200030 Key Laboratory of Polar Atmosphere-Ocean-Iice System for Weather and Climate Ministry of EducationDepartment of Atmospheric and Oceanic SciencesFudan UniversityShanghai 200438 Shanghai Key Laboratory of Meteorology and Health Shanghai Meteorological ServiceShanghai 200030 Yangzhou Meteorological Office Yangzhou 225001 Department of Physics Yangzhou UniversityYangzhou 225003

Changing meteorological conditions during autumn and winter have considerable impact on air quality in the Yangtze River Delta(YRD)*** climatic factors,such as sea surface temperature and sea ice,together with the atmospheric circulation,directly affect meteorological conditions in the YRD region,thereby modulating the variation in atmospheric PM_(2.5) *** study used the evolutionary modeling machine learning technique to investigate the lag relationship between 144 climate system monitoring indices and autumn/winter PM_(2.5) concentration over 0-12 months in the YRD *** calculating the contribution ratios and lagged correlation coefficients of all indices over the previous 12 months,the top 36 indices were selected for model ***,the nine indices that contributed most to the PM_(2.5) concentration in the YRD region,including the decadal oscillation index of the Atlantic Ocean and the consistent warm ocean temperature index of the entire tropical Indian Ocean,were selected for physical mechanism *** evolutionary model was developed to forecast the average PM_(2.5) concentration in major cities of the YRD in autumn and winter,with a correlation coefficient of *** model testing,the correlation coefficient between the predicted and observed PM_(2.5) concentrations was in the range of 0.73-0.83 and the root-mean-square error was in the range of 9.5-11.6μg m-3,indicating high predictive *** model performed exceptionally well in capturing abnormal changes in PM_(2.5) concentration in the YRD region up to 50 days in advance.

关键词： PM_(2.5)concentration machine learning evolutionary modeling seasonal prediction

维普期刊数据库