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Electrosynthesis of Co3O4 and Co（OH）2 ultrathin nanosheet arrays for efficient electrocatalytic water splitting in alkaline and neutral media

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Nano Research 2018年第1期11卷 323-333页

作者： Lin Zhang bingrui liu Ning Zhang Mingming Ma CAS Key Laboratory of Soft Matter Chemistry iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Department of Chemistry University of Science and Technology of China Hefei 230026 China Department of Biology and Environmental Engineering Hefei University Hefei230022 China

The dimensional confinement endows ultrathin nanosheets with unique physical and chemical properties, which have been widely studied for the purpose of developing active electrocatalysts for water splitting. Ultrathin nanosheets are generally synthesized by chemical vapor deposition, exfoliation, or surfactant- assisted synthesis, which either require special equipment and reaction conditions, or is limited by the low yields and the difficulty in controlling the lateral size and structure of the nanosheets. In addition, achieving a high loading of ultrathin nanosheets on the electrodes without compromising their catalytic activity still remains a challenge. Herein, we report a simple electrodeposition method for preparing C0304 and Co（OH）2 ultrathin nanosheet arrays （UNA） without using templates or surfactants. The obtained arrays exhibit high activity for oxygen and hydrogen evolution reactions, in both alkaline and neutral media. The electrolyzer based on Co304 and Co（OH）2 UNA shows superior activity and stability than that based on IrO2 and Pt/C, which demonstrates the potential of the present electrodeposition method for developing active and stable electrocatalysts for water splitting.

关键词： electrosynthesis,water splitting,electrocatalysts,non-noble metal,ultrathin nanosheets

Catalytic degradation of lomefloxacin by photo-assisted persulfate activation on natural hematite:Performance and mechanism

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Chinese Chemical Letters 2022年第8期33卷 3809-3817页

作者： Ruonan Guo Ying Chen bingrui liu Ying Han Jianfeng Gou Xiuwen Cheng Key Laboratory for Environmental Pollution Prediction and Control Gansu ProvinceCollege of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China

The natural hematite(α-Fe_(2)O_(3)) is stable and abundant on the earth,as well as with strange electronic band structure and good visible light absorption properties.However,the composition and catalytic performance of natural hematite should be explored.In this study,the photo-assisted hematite nanoparticles activated persulfate(H-NPs/PS/vis)system was constructed.As detected,H-NPs had an irregular agglomerate structure with abundant internal pore and were mainly composed of Fe_(2)O_(3),SiO_(2) and TiO_(2).The system was applied to removing various antibiotic(i.e.,lomefloxacin,ciprofloxacin and enrofloxacin with initial concentration of 10 mg/L),achieving high degradation performance of 82.0%,81.2%and 82.2%after120,330 and 240 min,respectively.Moreover,H-NPs had excellent reusability with low metal leaching(Ti leaching percentage lower than 0.01%,Fe dissolution percentage was 0.48%)and stable structure.At last,a possible reaction mechanism of H-NPs/PS/vis system was proposed that lomefloxacin(LOM)was efficiently removed via the synergistic process of components contained in H-NPs with PS and light,involving the generation of·O_(2)^(-),·OH and SO_(4)^(·-).Above all,this paper provided a novel application scheme of natural hematite through in-depth and comprehensive experimental exploration.

关键词： Natural hematite Persulfate Photocatalytic Antibiotic degradation

CoFe_(2)O_(4)nanoparticles anchored on waste eggshell for catalytic oxidation of florfenicol via activating peroxymonosulfate

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Chinese Chemical Letters 2022年第8期33卷 3713-3720页

作者： Yingjie Gao Ying Han bingrui liu Jianfeng Gou Dan Feng Xiuwen Cheng Key Laboratory for Environmental Pollution Prediction and Control College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China College of Chemistry and Environmental Sciences Yili Normal UniversityYining 835000China Key Laboratory of Pollutant Chemistry and Environmental Treatment Yili Normal UniversityYining 835000China

Eggshell-loaded CoFe_(2)O_(4) catalyst was synthesized via a convenient hydrothermal method during our work,then the surface morphology and elemental composition of the composites were systematically investigated.Performance of CoFe_(2)O_(4)/eggshell-activated peroxymonosulfate(PMS)system was evaluated by selecting florfenicol(FF)as the model pollutant,and effects of operating parameters and water matrices on the FF removal efficiency in this system were investigated.In addition,main radicals involved in FF degradation were identified by EPR tests and radical quenching experiments,and possible mechanism was proposed.The reduction of toxicity during FF degradation was confirmed,and in combination with HP-LC tests,it was found that dehalogenation and defluorination were effectively carried out during FF degradation.In addition,the prepared CoFe_(2)O_(4)polyvinylidene fluoride(PVDF)membrane effectively improved the stability of the material and reduced the precipitation of metals.

关键词： CoFe_(2)O_(4)/eggshell Peroxymonosulfate Florfenicol PVDF membrane

On the Response of Subduction in the South Pacific to an Intensification of Westerlies and Heat Flux in an Eddy Permitting Ocean Model

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Advances in Atmospheric Sciences 2017年第4期34卷 521-531页

作者： Chengyan liu Zhaomin WANG bingrui LI Chen CHENG Ruibin XIA Polar Climate System and Global Change Laboratory Nanjing University of Information Science and TechnologyNanjing 210044China Polar Research Institute of China Shanghai 200136China

Based on an eddy permitting ocean general circulation model, the response of water masses to two distinct climate scenarios in the South Pacific is assessed in this paper. Under annually repeating atmospheric forcing that is characterized by different westerlies and associated heat flux, the response of Subantarctic Mode Water（SAMW） and Antarctic Intermediate Water（AAIW） is quantitatively estimated. Both SAMW and AAIW are found to be warmer, saltier and denser under intensified westerlies and increased heat loss. The increase in the subduction volume of SAMW and AAIW is about 19.8 Sv（1 Sv =10-6m-3s-（-1））. The lateral induction term plays a dominant role in the changes in the subduction volume due to the deepening of the mixed layer depth（MLD）. Furthermore, analysis of the buoyancy budget is used to quantitatively diagnose the reason for the changes in the MLD. The deepening of the MLD is found to be primarily caused by the strengthening of heat loss from the ocean to the atmosphere in the formation region of SAMW and AAIW.

关键词： subduction mixed layer depth westerlies heat flux buoyance flux

Monitoring, Warning, and Control of Rockburst in Deep Metal Mines

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Engineering 2017年第4期3卷 538-545页

作者： Xia-Ting Feng Jianpo liu bingrui Chen Yaxun Xiao Guangliang Feng Fengpeng Zhang Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Northeastern University Shenyang 110819 China State Key Laboratory of Ceomechanics and Geotechnical Engineering Institute of Rock and Soil Mechanics Chinese Academy of Sciences Wuhan 430071 China

This paper reviews the recent achievements made by our team in the mitigation of rockburst risk. It includes the development of neural network modeling on rockburst risk assessment for deep gold mines in South Africa, an intelligent microseismicity monitoring system and sensors, an understanding of the rockburst evolution process using laboratory and in situ tests and monitoring, the establishment of a quantitative warning method for the location and intensities of different types of rockburst, and the development of measures for the dynamic control of rockburst. The mitigation of rockburst at the Hongtoushan copper mine is presented as an illustrative example.

关键词： Deep metal mining Rockburst Monitoring Warning Mitigation

Loganin regulates glycolipid metabolism by influencing intestinal microbiota and AMPK signaling in obese mice

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Journal of Traditional Chinese Medical Sciences 2022年第3期9卷 321-329页

作者： bingrui Xu Zimengwei Ye Tian Tian Ruyuan Zhu Chenyue liu Xin Fang Dongwei Zhang Min Fu Sihua Gao Dandan Zhao School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing102488China Institute of Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing100700China Department of Endocrinology Beijing University of Chinese Medicine Third Affiliated HospitalBeijing100029China Research Institute of McGill University Health Center McGill UniversityMontrealH4A 3J1Canada

Objective: We aimed to observe the effects of loganin(Log) on serum glycolipid levels and probe the mechanisms focusing on intestinal flora and AMP-activated protein kinase(AMPK) signaling in obese mice.Methods: A high-fat diet was given for 12 consecutive weeks to generate the obesity model in institute of cancer research(ICR) mice. Body weight was measured weekly and fasting blood glucose(FBG) was determined every 2 weeks. Both the oral glucose tolerance test and the intraperitoneal insulin tolerance test were performed. The serum levels of total cholesterol(TC), triglyceride, high-density lipoproteincholesterol, low-density lipoprotein-cholesterol(LDL-C), and free fatty acids(FFA) were measured. The expression of key proteins in the AMPK signaling pathway in skeletal muscle tissue was detected by immunoblotting, and gut microbiota were characterized using 16S rDNA sequencing.Results: Log significantly decreased the body weight and the FBG in obese mice(P <.05), and it could restore FBG to normal levels. The total cholesterol, LDL-C, and FFA levels were significantly reduced by Log compared with the obese controls(TC: P =.0020;LDL-C: P =.0233;FFA: P =.0127), and the glucose tolerance of animals was significantly improved(P =.0477). The western blot results showed that Log could upregulate the protein expression of Adenosine 5‘-monophosphate(AMP)-activated protein kinase(AMPKa), Sirtuin 1(SIRT1), and peroxisome proliferator-activated receptor-gamma coactivator-1 alpha(PGC1a) in skeletal muscle tissue of obese mice. 16S rDNA sequencing indicated that Log reduced the diversity of the gut flora in feces and altered the floral composition of obese mice.Conclusions: Log was effective in reducing body weight and improving glucolipid metabolism in obese mice, probably through activating AMPK signaling and regulating intestinal microbial diversity.

关键词： Loganin Insulin resistance Obesity Glucose metabolism Lipid metabolism Gut microbiota AMPK signaling Pathway Mechanisms

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医疗器械软件产品现场检查要点研究

中国医疗设备 2024年第6期39卷 120-123,136页

作者：李烜刘炳锐天津市医疗器械审评查验中心天津300191

目的通过梳理2022版《医疗器械注册质量管理体系核查指南》《医疗器械生产质量管理规范独立软件现场检查指导原则》与《医疗器械注册自检管理规定》之间的关系,归纳和分析医疗器械软件产品尤其是注册自检方式现场检查的特殊要求并提供... 详细信息

目的通过梳理2022版《医疗器械注册质量管理体系核查指南》《医疗器械生产质量管理规范独立软件现场检查指导原则》与《医疗器械注册自检管理规定》之间的关系,归纳和分析医疗器械软件产品尤其是注册自检方式现场检查的特殊要求并提供部分检查要点和建议。方法基于天津市医疗器械审评查验中心非公开数据库,统计13家生产企业的20个医疗器械软件产品现场检查情况,研究医疗器械软件产品的设计开发、生产工艺、质量控制及注册自检等方面的问题,分析医疗器械软件产品现场检查时的关注点。结果根据现场检查分析情况,总结了部分医疗器械软件产品企业质量体系现场检查的共性问题,提出了部分现场检查尤其是注册自检的特殊要求。结论本文从设备和厂房设施、质量控制、设计开发、管理体系四个方面提出了医疗器械软件现场检查的要点,为医疗器械软件类产品的质量管理体系检查工作提供了参考和借鉴。

关键词：医疗器械软件生产质量管理规范现场检查注册自检

Improving the observation and prediction capabilities for Arctic marine environment: from the perspective of Arctic Shipping

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Acta Oceanologica Sinica 2021年第1期40卷 1-3页

作者： Hui Wang Qizhen Sun Lin Zhang Xi Liang Qinghua Yang Na liu Chunhua Li Qingsheng liu bingrui Li Qian Feng Xiao Cheng Yi Yu National Marine Environmental Forecasting Center Beijing 100081China School of Atmospheric Sciences Sun Yat-sen UniversityZhuhai 519082China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of ScienceBeijing 100101China Polar Research Institute of China Shanghai 200136China National Satellite Ocean Application Service Beijing 100081China School of Geospatial Engineering and Science Sun Yat-sen UniversityZhuhai 519082China Donghai Navigation Safety Administration Ministry of TransportShanghai 200086China

In recent decades,Arctic climate is warming at a rate of almost twice the global average(Osborne et al.,2018).The surface atmosphere and oceanic temperatures over Arctic Ocean increase leads to the rapid retreat of sea ice.The extension and thickness of sea ice in the Arctic,as well as the multi-year ice coverage,have decreased significantly.For example,the September sea ice extent in the Arctic,which is the end of the summer melt season,decreases at a rate of larger than 11%per decade(Polyakov et al.,2012).

关键词： Arctic prediction season

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扫路机气力系统工作效率研究

力学与实践 2022年第1期44卷 45-50页

作者：李亮刘炳瑞张润辉浙江大学航空航天学院流体所流体动力与机电系统国家重点实验室杭州310027 广东盈峰智能环卫科技有限公司广东佛山528322

本文旨在探讨提高吸式扫路机气力输送系统的效率,采用计算流体力学与离散单元法对圆柱颗粒在气体中的运动进行数值模拟,分别研究了颗粒密度、颗粒长径比、颗粒初始平面与吸入口的距离、吸入速度、颗粒所处圆周对于颗粒吸入效率的影响。... 详细信息

本文旨在探讨提高吸式扫路机气力输送系统的效率,采用计算流体力学与离散单元法对圆柱颗粒在气体中的运动进行数值模拟,分别研究了颗粒密度、颗粒长径比、颗粒初始平面与吸入口的距离、吸入速度、颗粒所处圆周对于颗粒吸入效率的影响。研究结果表明:颗粒密度越大,颗粒的吸入效率越低;颗粒长径比对吸入效率的影响较小;颗粒初始平面与吸入口的距离与颗粒吸入效率为负相关;吸入速度增大有利于提高颗粒吸入效率,但是当吸入速度增大至一定程度时,其对吸入效率影响减小;颗粒所处圆周与吸入口圆周径向距离越小,颗粒的吸入效率越高。

关键词：气力系统输运效率柱状颗粒离散单元法