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Fully fluorinated hybrid zeolite imidazole/Prussian blue analogs with combined advantages for efficient oxygen evolution reaction

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Chinese Chemical Letters 2024年第6期35卷 222-228页

作者： Jiayu Xu Meng li Baoxia Dong ligang Feng School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

Hybrid metal-organic framework(MOF)derivatives play a significant role in the novel catalyst development in energy conversion reactions.Here,we demonstrated the low-temperature fully fluorinated zeolitic imidazole framework(ZIF)coupled with a three-dimensional open framework Prussian blue analog(PBA)with combined advantages for electrocatalytic oxygen evolution reaction(OER)in water splitting reaction.The spectroscopic analysis and the electrochemical studies revealed the combined advantages of efficient electronic effect and active site synergism.Because of good conductivity improvement by Ndoped carbon derived from ZIF and the high electrochemical surface area and active site exposure from PBA derivatives,good catalytic performance was obtained on the optimal catalyst of Co Ni ZIF/Co Fe-PBAF-300,which required a low overpotential of 250 m V to reach 10 m A/cm^(2)loaded on the glassy carbon electrode,with Tafel slope of 47.4 m V/dec,and very high dynamic and steady stability.In addition,the multi-component with the mixed structure from highly polar metal fluorides promoted the easy formation of the active phase as revealed by the post-sample analysis.The current results showed a novel composite catalyst materials development from the hybrid MOF derivatives,which would be promising in the electrolysis of water oxidation reactions and energy-relevant catalysis reactions.

关键词： Metal-organic framework Zeolitic imidazole framework Prussian blue analog Fluoridation Multi-component Oxygen evolution reaction

Au nanoclusters anchored on TiO_(2) nanosheets for high-efficiency electroreduction of nitrate to ammonia

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Nano Research 2024年第3期17卷 1209-1216页

作者： Miaosen Yang Tianran Wei Jia He Qian liu ligang Feng Hongyi li Jun Luo Xijun liu School of Chemical Engineering Northeast Electric Power UniversityJilin 132012China Nanchang Institute of Technology Nanchang 330044China State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of ChemistryXinjiang UniversityUrumqi 830017China State Key Laboratory of Featured Metal Materials and life-cycle Safety for Composite Structures Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China Institute for New Energy Materials and Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Institute for Advanced Study Chengdu UniversityChengdu 610106China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Guangzhou Panyu Polytechnic Guangzhou 511483China ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of ChinaLonghua DistrictShenzhen 518110China

Electrocatalytic nitrate reduction reaction(NO_(3)RR)offers a unique rationale for green NH_(3) synthesis,yet the lack of high-efficiency NO_(3)RR catalysts remains a great challenge.In this work,we show that Au nanoclusters anchored on TiO_(2) nanosheets can efficiently catalyze the conversion of NO_(3)RR-to-NH_(3) under ambient conditions,achieving a maximal Faradic efficiency of 91%,a peak yield rate of 1923μg·h^(-1)·mgcat.-1,and high durability over 10 consecutive cycles,all of which are comparable to the recently reported metrics(including transition metal and noble metal-based catalysts)and exceed those of pristine TiO_(2).Moreover,a galvanic Zn-nitrate battery using the catalyst as the cathode was proposed,which shows a power density of 3.62 mW·cm^(-2) and a yield rate of 452μg·h^(-1)·mgcat.-1.Theoretical simulations further indicate that the atomically dispersed Au clusters can promote the adsorption and activation of NO_(3)-species,and reduce the NO_(3)RR-to-NH_(3) barrier,thus leading to an accelerated cathodic reaction.This work highlights the importance of metal clusters for the NH_(3) electrosynthesis and nitrate removal.

关键词： NH3 electrosynthesis Zn-nitrate battery Au nanoclusters nitrate reduction reaction(NRR) TiO_(2)nanosheets

Energy Planning of Beijing Towards Low-carbon,Clean and Efficient Development in 2035

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 913-928页

作者： Chengzhou li Ningling Wang Xiaohu Shen Yumeng Zhang Zhiping Yang Xiaofeng Tong François Maréchal ligang Wang Yongping Yang Institute of Energy Power Innovation North China Electric Power UniversityBeijing 102206China School of Energy Power and Mechanical Engineering and National Research Center for Thermal Power Engineering and TechnologyNorth China Electric Power UniversityBeijing 102206China Industrial Process and Energy Systems Engineering Swiss Federal Institute of Technology in LausanneSionSwitzerland

Energy transition towards clean,efficient energy supply has been a common sense of the government and public in China.However,lacking reasonable planning will lead to undisciplined development,resource waste,and excessive investment.In this context,this paper investigates potential pathways of Beijing energy transition towards a high-level low-carbon,clean and efficient energy system in 2035 with an extended energysocpe model.Firstly,based on available data,future energy demands are predicted by a newly proposed hybrid forecasting method,which combines the traditional regression model,grey model,and support vector machine model with an entropy-based weighted factor.Secondly,the superstructure-based optimization model is employed to investigate the system configuration and operation strategy of the future Beijing energy system.Finally,the uncertainty impact of electricity price,natural gas price,hydrogen price,and the capital expenditures of electrolyzer and steam methane reforming for hydrogen applications are studied.The forecasting results show that all walks of life will witness a continuously increasing energy demand in multiple sectors of Beijing towards 2035.The planning results suggest that the imported electricity and natural gas will dominate the energy supply of Beijing in 2035 with a contribution of 86%of the energy resources consumption of 384 TWh.Moreover,the energy system presents a high end-use electrification level of 65%and high penetration of efficient technologies,which supply 119 TWh via combined heat and power,26 TWh via heat pump and 95 TWh via district heating network.The energy use of various sectors of energy resources,technologies and end-use are closely related.Hydrogen will have an increased penetration in the private mobility sector,but the locally generated hydrogen is mainly from steam methane reforming technology.

关键词： Energy transition energy planning carbonneutral demand forecasting energyscope

Wave Azimuth Cutoff Compensation Method and the Multisatellite Networking Mode of SAR

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Journal of Ocean University of China 2023年第3期22卷 683-696页

作者： WAN Yong CUI Kun QU Ruozhao DAI Yongshou li ligang QU Xiaojun ZHANG Xiaoyu College of Oceanography and Space Informatics China University of PetroleumQingdao 266580China China College of Control Science and Engineering China University of PetroleumQingdao 266580China

Synthetic aperture radars(SARs)encounter the azimuth cutoff problem when observing sea waves.Consequently,SARs can only capture the waves with wavelengths larger than the cutoff wavelength and lose the information of waves with smaller wavelengths.To increase the accuracy of SAR wave observations,this paper investigates an azimuth cutoff compensation method based on the simulated multiview SAR wave synchronization data obtained by the collaborative observation via networked satellites.Based on the simulated data and the equivalent multiview measured data from Sentinel-1 virtual networking,the method is verified and the cutoff wavelengths decrease by 16.40%and 14.00%.The biases of the inversion significant wave height with true values decrease by 0.04 m and 0.14 m,and the biases of the mean wave period decrease by 0.17 s and 0.22 s,respectively.These results demonstrate the effectiveness of the azimuth cutoff compensation method.Based on the azimuth cutoff compensation method,the multisatellite SAR networking mode for wave observations are discussed.The highest compensation effect is obtained when the combination of azimuth angle is(95°,115°,135°),the orbital intersection angle is(50°,50°),and three or four satellites are used.The study of the multisatellite networking mode in this paper can provide valuable references for the compensation of azimuth cutoff and the observation of waves by a multisatellite network.

关键词： synthetic aperture radar(SAR) compensation effect cutoff wavelength multisatellite networking mode

Effects of probiotics， prebiotics and synbiotics supplementation on cardiovascular risk factors in patients with type 2 diabetes mellitus: a GRADE-assessed systematic review and meta-analysis of randomized controlled trials

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Food Science and Human Wellness 2024年

作者： Yanyan Tian Jiayue Xia lihua li ligang Yang Hua Xiao Guoping Gao Yuanyuan Wang Chen Zhang Tiange Bu Guiju Sun Department of Nutritional Sciences University of Toronto Key Laboratory of Environmental Medicine and Engineering of Ministry of Education Department of Nutrition and Food Hygiene School of Public Health Southeast University lianshui People's Hospital Affiliated to Kangda College of Nanjing Medical University Gong'an County People's Hospital

A systematic review and meta-analysis study was conducted to assess the effectiveness of probiotic/prebiotic/synbiotic supplementation on the effects of cardiovascular risk factors in patients with type 2 diabetes mellitus (T2DM) based on data from randomized controlled trials (RCTs). We searched electronic databases including PubMed， Cochrane library， Embase， and Web of Science to identify clinical trials published up to 31 March 2023. Data was pooled using a random-effects model if significant heterogeneity (I2> 50%)， otherwise use a fixed-effects model. Fifty-six trials that included 3 317 patients were enrolled for analysis. Meta-analysis reported that probiotic/prebiotic/synbiotic supplementation significantly reduced systolic blood pressure (SBP) (weighted mean difference (WMD): -3.57 mmHg， 95% confidence interval (CI): -5.36， -1.78; P = 0.000)， diastolic blood pressure (DBP) (WMD: -2.05 mmHg， 95% CI: -3.07， -1.04; P = 0.000)， triglycerides (TG) (WMD: -16.10 mg/dL， 95% CI: -20.16， -12.05; P = 0.000)， total cholesterol (TC) (WMD: -14.00 mg/dL， 95% CI: -20.46， -7.55; P = 0.000)， low-density lipoprotein cholesterol (LDL-C) (WMD: -7.03 mg/dL， 95% CI: -9.25， -4.81; P = 0.000)， fasting plasma glucose (FPG) (WMD: -16.57 mg/dL， 95% CI: -20.39， -12.74; P = 0.000)， hemoglobin A1c (HbA1c) (WMD: -0.44%， 95% CI: -0.68， -0.20; P = 0.000)， insulin (standardized mean difference (SMD): -0.37， 95% CI: -0.53， -0.21; P = 0.000)， homeostatic model assessment of insulin resistance (HOMA-IR) (WMD: -1.05， 95% CI: -1.56， -0.54; P = 0.000)， C-reactive protein (CRP) (SMD: -0.35， 95% CI: -0.57， -0.13; P = 0.002)， tumor necrosis factor-α (TNF-α) (SMD: -1.07， 95% CI: -1.57， -0.56; P = 0.000)， interleukin-6 (IL-6) (SMD: -0.37 ， 95% CI: -0.61， -0.13; P = 0.003) levels， they also increased the high-density lipoprotein cholesterol (HDL-C) (WMD: 3.70 mg/dL， 95% CI: 1.80， 5.60; P = 0.000) levels in T2DM patients， as compared to the placebo groups. This meta-analysis supports the use of probiotic/prebiotic/synbiotic supplementation as an adjun

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真菌毒素脱毒技术研究进展

食品工业科技 2024年第5期45卷 377-383页

作者：马帅李安潘立刚北京市农林科学院质量标准与检测技术研究所北京100097

真菌毒素是产毒丝状真菌产生的有毒次级代谢产物,存在于农产品及其制品中,严重危害人类和动物健康。近年来,研究人员围绕真菌毒素的去除开展了大量的研究工作。本文主要综述了真菌毒素的污染特点、限量标准以及脱毒技术,重点系统总结了... 详细信息

真菌毒素是产毒丝状真菌产生的有毒次级代谢产物,存在于农产品及其制品中,严重危害人类和动物健康。近年来,研究人员围绕真菌毒素的去除开展了大量的研究工作。本文主要综述了真菌毒素的污染特点、限量标准以及脱毒技术,重点系统总结了基于石墨烯、金属有机骨架和磁性纳米材料吸附剂的真菌毒素物理吸附脱毒技术研究进展,进一步促进新型功能纳米材料在物理吸附技术中的发展,推动物理吸附脱毒技术在真菌毒素防控中的应用。

关键词：真菌毒素脱毒技术物理吸附新型功能纳米材料

Revealing structure correlation between ionic liquid and metal-organic framework matrix

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Magnetic Resonance Letters 2024年第2期4卷 65-72页

作者： ligang Xu Wenda Zhang Chenjie Lou Chenxu Geng Yuxiu Sun Jie liu Yongchao Shi Huajie Luo Jipeng Fu Haiyan Zheng Mingxue Tang Center for High Pressure Science and Technology Advanced Research Beijing100193China College of Materials Science and Engineering Guilin University of TechnologyGuilin541004China State Key Laboratory of Separation Membranes and Membrane Processes School of Material Science and EngineeringTiangong UniversityTianjin300387China University of Science and Technology Beijing Beijing100083China Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province Institute of Optoelectronic Materials and DevicesChina Jiliang UniversityHangzhou310018China

Solid-state batteries are rising rapidly in response to the fast-increasing energy demand.Metal-organic framework(MOF) loaded with ionic liquids has brought new opportunities for solid-state batteries owing to its good interfacial compatibility and high ionic conductivity. MOF-808 is selected to be filled with li-contained ionic liquid for structure and ion dynamics investigation using nuclear magnetic resonance(NMR) and X-ray diffraction.This study finds that the introduced ionic liquid would partially soften the matrix of MOF-808 and thus yield amorphous phase. By selective isotope replacement under cycling symmetric ^(6)li metal cell, li^(+)ion is observed to mainly go cross ionic liquid in the open channel of matrix under potential polarization.

关键词： Nuclear magnetic resonance Solid-state batteries MOF-808 Ionic liquid Local structure

HiFAST:An HIdata calibration and imaging pipeline for FAST

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Science China(Physics,Mechanics & Astronomy) 2024年第5期67卷 182-199页

作者： Yingjie Jing Jie Wang Chen Xu Ziming liu Qingze Chen Tiantian liang Jinlong Xu Yixian Cao Jing Wang Huijie Hu Chuan-Peng Zhang Qi Guo liang Gao Mei Ai Hengqian Gan Xuyang Gao Jinlin Han ligang Hou Zhipeng Hou Peng Jiang Xu Kong Fujia li Zerui liu li Shao Hengxing Pan Jun Pan Lei Qian Jinghai Sun Ningyu Tang Qingliang Yang Bo Zhang Zhiyu Zhang Ming Zhu National Astronomical Observatories Chinese Academy of SciencesBeijing 100012China Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 02206China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Guizhou Radio Astronomical Observatory Guizhou UniversityGuiyang 55000China Max Planck Institute for Extraterrestrial Physics Garching 85748Germany Kavli Institute for Astronomy and Astrophysics Peking UniversityBeijing 100871China Institute of Computational Cosmology Department of PhysicsUniversity of DurhamDurham DHI 3LEUK CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Deep Space Exploration Laboratory/Department of Astronomy University of Science and Technology of ChinaHefei 230026China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Astrophysics Department of PhysicsUniversity of OxfordOxford OX/3RHUK College of Earth Sciences Guilin University of TechnologyGuilin 541004China Department of Physics Anhui Normal UniversityWuhu 241002China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China Key Laboratory of Modern Astronomy and Astrophysics Nanjing UniversityNanjing 20023China

The Five-hundred-meter Aperture Spherical radio Telescope(FAST)has the largest aperture and a 19-beam L-band receiver,making it powerful for investigating the neutral hydrogen atomic gas(HI)in the universe.We present HiFAST(https://hifast.***.io),a dedicated,modular,and self-contained calibration and imaging pipeline for processing the H?data of FAST.The pipeline consists of frequency-dependent noise diode calibration,baseline fitting,standing wave removal using an FFT-based method,flux density calibration,stray radiation correction,and gridding to produce data cubes.These modules can be combined as needed to process the data from most FAST observation modes:tracking,drift scanning,On-The-Fly mapping,and most of their variants.With HiFAST,the root-mean-square(RMS)noises of the calibrated spectra from all 19 beams were only slightly(~5%)higher than the theoretical expectation.The results for the extended source M33 and the point sources are consistent with the results from Arecibo.The moment maps(0,1 and 2)of M33 agree well with the results from the Arecibo Galaxy Environment Survey(AGES)with a fractional difference of less than 10%.For a common sample of 221 sources with signal-to-noise ratio S/N>10 from the Arecibo Legacy Fast ALFA(ALFALFA)survey,the mean value of fractional difference in the integrated flux density,Sint,between the two datasets is approximately 0.005%,with a dispersion of 15.4%.Further checks on the integrated flux density of 23 sources with seven observations indicate that the variance in the flux density of the source with luminous objects(Sint>2.5 Jy km s-1)is less than 5%.Our tests suggest that the FAST telescope,with the efficient,precise,and user-friendly pipeline HiFAST,will yield numerous significant scientific findings in the investigation of the H?in the universe.

关键词： fractional luminous correction

急性缺血性脑卒中患者血清中同型半胱氨酸与炎症反应及氧化应激的关联性分析

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吉林大学学报（医学版） 2024年第3期50卷 786-790页

作者：唐晶李环张硕姜立刚吉林医药学院附属医院神经内科二疗区吉林吉林132013 北华大学公共卫生学院环境卫生教研室吉林吉林132013

目的:探讨同型半胱氨酸(Hcy)与炎症反应及氧化应激的相关性,分析其在急性缺血性脑卒中(AIS)发生发展中的作用。方法:选取首次发病的38例AIS患者作为AIS组,并按照病例对照研究原则,选取同期体验的健康体验者45名作为对照组。采用酶联免... 详细信息

目的:探讨同型半胱氨酸(Hcy)与炎症反应及氧化应激的相关性,分析其在急性缺血性脑卒中(AIS)发生发展中的作用。方法:选取首次发病的38例AIS患者作为AIS组,并按照病例对照研究原则,选取同期体验的健康体验者45名作为对照组。采用酶联免疫吸附试验(EliSA)检测2组研究对象血清中Hcy水平和炎症因子白细胞介素(IL)-6及肿瘤坏死因子α(TNF-α)水平,免疫比浊法检测2组研究对象血清中超敏C反应蛋白(hs-CRP)水平,化学比色法检测2组研究对象血清中丙二醛(MDA)水平和超氧化物歧化酶(SOD)活性。采用Pearson相关分析法分析AIS患者血清Hcy水平与炎症因子及氧化应激指标水平的相关性。结果:与对照组比较,AIS组患者血清中Hcy、hs-CRP、TNF-α、IL-6和MDA水平均明显升高(P<0.05),SOD活性明显降低(P<0.05)。AIS患者血清Hcy水平与hs-CRP、TNF-a、IL-6和MDA水平呈正相关关系(r=0.615,P<0.05;r=0.632,P<0.05;r=0.598,P<0.05;r=0.612,P<0.05),与SOD活性呈负相关关系(r=-0.325,P<0.05)。结论:AIS患者血清中Hcy水平与炎症因子及氧化损伤有密切关联。Hcy能够促进氧化自由基及炎症因子产生,并对内皮细胞造成损伤,在AIS发生发展过程中具有一定临床意义。

关键词：急性缺血性脑卒中同型半胱氨酸炎症因子氧化应激白细胞介素6

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