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Protein-activated atomic layer deposition for robust crude-oil-repellent hierarchical nano-armored membranes

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Science Bulletin 2024年第2期69卷 218-226页

作者： xiaobin Yang Pan Sun Yajie Wen Anil U.mane Jeffrey W.Elam Jun ma Shaomin Liu Seth B.Darling Lu Shao MIIT Key Laboratory of Critical materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China Chemical Sciences and Engineering Division Argonne National LaboratoryLemont IL 60439USA Applied materials Division Argonne National LaboratoryLemont IL 60439USA Advanced materials for Energy-Water Systems Energy Frontier Research Center Argonne National LaboratoryLemont IL 60439USA Pritzker School of Molecular Engineering University of ChicagoChicago IL 60637USA Department of Physics University of Ilinois at ChicagoChicago IL 60607USA School of Environment Harbin Institute of TechnologyHarbin 150090China WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerth WA 6845Australia

Atomic layer deposition(ALD)offers unique capabilities to fabricate atomically engineered porous materials with precise pore tuning and multi-functionalization for diverse applications like advanced membrane separations towards sustainable energy-water systems.However,current ALD technique is inhibited on most non-polar polymeric membranes due to lack of accessible nucleation sites.Here,we report a facile method to efficiently promote ALD coating on hydrophobic surface of polymeric membranes via novel protein activation/sensitization.As a proof of concept,TiO2 ALD-coated membranes activated by bovine serum albumin exhibit remarkable superhydrophilicity,ultralow underwater crude oil adhesion,and robust tolerance to rigorous environments including acid,alkali,saline,and ethanol.Most importantly,excellent cyclable crude oil-in-water emulsion separation performance can be achieved.The mechanism for activation/sensitization is rooted in reactivity for a particular set of amino acids.Furthermore,the universality of protein-sensitized ALD is demonstrated using common egg white,promising numerous potential usages in biomedical engineering,environmental remediation,lowcarbon manufacturing,catalysis,and beyond.

关键词： Membrane separation Atomic layer deposition Water treatment Antifouling

Structural and antioxidative properties of royal jelly protein by partial enzymatic hydrolysis

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Food Science and Human Wellness 2023年第5期12卷 1820-1827页

作者： Shanshan Li Lingchen Tao Shiqin Peng Xinyu Yu xiaobin ma Fuliang Hu Key laboratory of silkworm and bee resource utilization and innovation of Zhejiang Province College of Animal SciencesZhejiang UniversityHangzhou 310058China Teagasc Food Research Centre MooreparkFermoyCo.Cork P61 C996Ireland

The objective of this study was to investigate the structural and antioxidative properties of royal jelly protein(RJP)at different degrees of hydrolysis(DH)by partial enzymatic hydrolysis. RJP was hydrolyzed by alcalase for 0 min, 15 min, 1 h, 5 h and 8 h to obtain hydrolysates at DH of 5.34%, 11.65%, 15.19%, 21.38% and 23.91%, respectively. With the increased DH, the RJP hydrolysates showed elevated antioxidative activities. The molecular weight of RJP hydrolysates was significantly decreased but their primary backbone kept unchanged. Analysis of circular dichroism spectra revealed that the enzymolysis reduced the content of α-helix but increased the contents of β-sheet, β-turn and random coil. Meanwhile, the surface hydrophobicity and fluorescence intensity of RJP hydrolysates were decreased and a red shift occurred. As the enzymolysis continued, the surface morphology of RJP was gradually changed from a sheet-like structure into microparticles. Changes in antioxidative activities and structures generally followed a DH-dependent manner, however these changes became insignificant for samples at DH beyond 20%. Taking into consideration of both effectiveness and productivity, the optimum enzymatic duration was determined at 5 h.

关键词： Royal jelly protein Acalase Enzymatic hydrolysis Antioxidative activity Structure

Construction of plum-branch-like CoSe2@N-Doped carbon/carbon fiber with dual protective mechanisms for enhanced lithium storage

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Progress in Natural Science:materials International 2024年第3期34卷 495-502页

作者： Ying Wang Ming Zhang Lei Chen Yanjuan Li Qingqing Wang xiaobin Wu Lingdi Shen Xiao Yan School of Chemistry & materials Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials Jiangsu Normal University

Cobalt selenide（CoSe2） emerges as a highly promising anode material for lithium-ion batteries（LIBs） owing to its high theoretical capacity and cost-effectiveness. Despite these merits, its practical utilization faces challenges stemming from substantial volume fluctuations and limited electronic conductivity. To tackle these issues, a plumbranch-like structure of CoSe2@N-doped carbon that embedded in one-dimensional N-doped carbon fibers（CoSe2@NC/CFs）, is successfully synthesized through an in-situ confinement method. Well-defined CoSe2@NC nanoparticles, featuring diameters between 20～30 nm, are uniformly dispersed on both the inner and outer surfaces of the carbon fibers. The distinctive architecture of CoSe2@NC/CFs ensures an increased number of active sites, elevated electronic conductivity, alleviated volume expansion, and accelerated reaction kinetics.Consequently, the CoSe2@NC/CFs exhibits remarkable cycling performance and exceptional rate capability.Operating at a current density of 1000 ma g-1, the CoSe2@NC/CFs anode sustains a capacity of 664 ma h g-1with no obvious capacity decay over 500 cycles. Even at a high current density of 5000 ma g-1, it maintains a capacity of 445 ma h g-1with a mere 0.02 % capacity decay per cycle. This study introduces a novel approach to anode material design, showcasing significant advancements in lithium-ion battery technology.

关键词： Carbon fiber Electrochemical performances Electrode Lithium-ion battery Metal-selenide

膜调控的头孢呋辛钠溶析-冷却耦合结晶成核介稳区测定及分析

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化工进展 2024年第1期43卷 260-268页

作者：张梁马骥贺高红姜晓滨肖武大连理工大学化工学院精细化工国家重点实验室辽宁省石化行业高效节能分离技术工程实验室辽宁大连116024

溶析-冷却耦合结晶可以提高结晶产率的同时,降低溶析剂的消耗量,是一种高效的耦合分离过程。传统的溶析结晶传质的界面往往受到宏观混合规模的限制,传质调控通常为亚毫米级,容易爆发成核,导致结晶产品的纯度差、平均粒度小、晶体粒度分... 详细信息

溶析-冷却耦合结晶可以提高结晶产率的同时,降低溶析剂的消耗量,是一种高效的耦合分离过程。传统的溶析结晶传质的界面往往受到宏观混合规模的限制,传质调控通常为亚毫米级,容易爆发成核,导致结晶产品的纯度差、平均粒度小、晶体粒度分布宽,因而需要更精确的调节策略。本文提出了一种新型的膜辅助溶析-冷却耦合结晶的方法,应用于头孢呋辛钠的结晶过程研究。其中,聚四氟乙烯(PTFE)中空纤维膜作为精确添加溶析剂和高效混合的界面,实现过饱和度的均匀分布。为了对比膜辅助溶析-冷却耦合结晶和传统耦合结晶方式的调控效果,对膜辅助溶析-冷却耦合结晶过程进行更为精确的调控,分别测量了传统和膜辅助条件下溶析-冷却耦合结晶的头孢呋辛钠-水-乙醇体系的介稳区宽度,计算了成核动力学参数。使用响应面方法和理论模型分析了冷却速率、溶析剂添加速率和溶析剂组分对介稳区宽度的影响,并比较了传统结晶和膜辅助结晶的介稳区特征。结果表明,膜辅助溶析-冷却耦合结晶的成核级数和成核速率常数(n=2.07,kn=158.15)均小于常规耦合结晶(n=2.45,kn=493.22),成核动力学方面更加温和,可调控性更强。

关键词：膜辅助结晶介稳区溶析-冷却耦合结晶过程强化响应面方法

慢性盆腔炎病原菌分布特征、耐药性及感染相关危险因素分析

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中国病原生物学杂志 2024年第5期19卷 566-569,578页

作者：汪韬王晓彬马超江油市九〇三医院妇产科四川江油621700

目的探讨慢性盆腔炎病原菌分布特征、药敏情况及感染相关危险因素。方法选取2020年8月至2022年10月诊治的317例妇产科生殖道感染患者作为研究对象,将在所有患者中筛查出慢性盆腔炎者设立为观察组(n=123),未筛查出设立为对照组(n=194),采... 详细信息

目的探讨慢性盆腔炎病原菌分布特征、药敏情况及感染相关危险因素。方法选取2020年8月至2022年10月诊治的317例妇产科生殖道感染患者作为研究对象,将在所有患者中筛查出慢性盆腔炎者设立为观察组(n=123),未筛查出设立为对照组(n=194),采用Logistic回归模型分析慢性盆腔炎发生的危险因素,对慢性盆腔炎患者开展细菌分离培养,对分离获取的病原菌实施药物敏感试验。结果观察组与对照组在年龄、孕次、产次、人流次数、性伴侣、卫生习惯、宫腔手术史等基线资料比较中,差异有统计学意义(均P0.05)。二元Logistic回归分析显示,年龄>45岁、孕次≥2次、产次≥2次、人流次数≥3次、性伴侣>1个、卫生习惯不良、宫腔手术史是引起慢性盆腔炎发生的危险因素(均P<0.05)。123例慢性盆腔炎患者经细菌培养分离出162株病原菌,其中革兰阳性菌68株(占41.98%),革兰阴性菌98株(占60.49%)。药敏结果显示,金黄色葡萄球菌对呋喃妥因、万古霉素、利奈唑胺无耐药性,对青霉素G的耐药率最高,其次为红霉素、利福平;凝固酶阴性葡萄球菌对呋喃妥因、万古霉素无耐药性,对青霉素G、红霉素、左氧氟沙星、利福平、头孢唑林的耐药性最高,其次为克林霉素。大肠埃希菌对氨苄西林的耐药率最高,其次为头孢唑林、头孢噻肟;肺炎克雷伯菌对氨苄西林的耐药性最高,其次为头孢他啶、阿米卡星;褪色沙雷菌对阿米卡星、亚胺培南无耐药性,对氨苄西林的耐药率最高,其次为头孢他啶、头孢噻肟。结论年龄、孕次、产次、人流次数、性伴侣、卫生习惯、宫腔手术史是引起慢性盆腔炎发生的危险因素,且在慢性盆腔炎患者中以金黄色葡萄球菌、凝固酶阴性葡萄球菌、大肠埃希菌、肺炎克雷伯菌、褪色沙雷菌等致病菌多见,容易对青霉素G、红霉素、头孢唑林等药物产生耐药性。

关键词：慢性盆腔炎病原菌分布药敏感染危险因素

以资源重构为中介的平行搜索对后发企业协同追赶的影响研究

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管理评论 2024年第1期36卷 119-130页

作者：李华华奉小斌马晓书同济大学经济与管理学院上海200092 浙江理工大学经济与管理学院杭州310018 上海大学管理学院上海200444

在技术和市场双轮驱动的转型背景下,后发企业如何摆脱“落后-追赶-落后”的追赶困境以实现技术和市场协同追赶值得关注。基于创新搜索、资源重构以及后发追赶相关理论,探究平行搜索对后发企业协同追赶的影响以及资源重构的中介机制,以21... 详细信息

在技术和市场双轮驱动的转型背景下,后发企业如何摆脱“落后-追赶-落后”的追赶困境以实现技术和市场协同追赶值得关注。基于创新搜索、资源重构以及后发追赶相关理论,探究平行搜索对后发企业协同追赶的影响以及资源重构的中介机制,以212份调查样本进行实证分析并通过Bootstrap方法检验中介效应,揭开了平行搜索影响后发企业协同追赶的“黑箱”机制。研究表明:领先搜索与跟随搜索对后发企业协同追赶均有促进作用;领先搜索正向影响资源重组却负向影响资源重置,而跟随搜索对资源重组和资源重置的影响与之相反;资源重组和资源重置均对协同追赶有促进作用,二者在领先搜索和跟随搜索与协同追赶之间发挥部分中介作用。

关键词：领先搜索跟随搜索协同追赶资源重构后发企业

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基于卡尔曼滤波的动力电池SOC估算

江苏大学学报（自然科学版） 2024年第1期45卷 24-29页

作者：徐立友马可杨晴霞宋林涛马小斌河南科技大学车辆与交通工程学院河南洛阳471000 河南凯瑞车辆检测认证中心有限公司河南焦作454000 焦作煤业集团物资供应处河南焦作454000

由于传统无迹卡尔曼滤波估算方法具有局限性,为了能准确估算动力电池荷电状态(state of charge,SOC),提出了一种基于无迹卡尔曼粒子滤波的动力电池SOC估算方法.以三元锂电池为研究对象,建立了电池二阶RC等效电路模型,通过对电池进行充... 详细信息

由于传统无迹卡尔曼滤波估算方法具有局限性,为了能准确估算动力电池荷电状态(state of charge,SOC),提出了一种基于无迹卡尔曼粒子滤波的动力电池SOC估算方法.以三元锂电池为研究对象,建立了电池二阶RC等效电路模型,通过对电池进行充放电试验辨识出模型参数,并验证模型准确性.采集了实际工况下的电池数据,分别用无迹卡尔曼滤波算法、粒子滤波算法和无迹卡尔曼粒子滤波算法估算电池SOC,在maTLAB中进行了仿真试验,并对估算的电池SOC进行比较.结果表明:无迹卡尔曼粒子滤波算法可以快速准确地估算出电池SOC,误差小于2.5%,优于另外2种算法.

关键词：三元锂电池 SOC 等效电路模型卡尔曼滤波电池管理系统

生态环境研究中压力-状态-响应模型应用的陷阱与改善

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生态学报 2024年第12期44卷 4923-4932页

作者：马小宾章锦河郭丽佳杨良健王静玮南京大学地理与海洋科学学院南京210023 黄山国家公园生态系统教育部野外科学观测研究站黄山245899 高原科学与可持续发展研究院西宁810016

压力-状态-响应(Pressure-State-Response, PSR)模型在国内外生态环境研究领域中应用十分广泛,但有关该模型指标遴选的适宜性和科学性则较少受到重视,导致模型在实际应用中存在指标的套用、误用、混用等现象。通过对国内外100多篇PSR模... 详细信息

压力-状态-响应(Pressure-State-Response, PSR)模型在国内外生态环境研究领域中应用十分广泛,但有关该模型指标遴选的适宜性和科学性则较少受到重视,导致模型在实际应用中存在指标的套用、误用、混用等现象。通过对国内外100多篇PSR模型应用研究文献的梳理与分析,认为:(1)PSR模型的实质是对人地关系的适应、反应与响应的评估,压力(Pressure)更多源于人类活动对自然资源的利用方式与强度,状态(State)是人类活动压力下生态环境自身的质与量的表现,响应(Response)则是对谋求人地关系和谐所做出的制度安排,PSR模型指标遴选宜与之相契合。(2)目前国内外PSR模型应用主要存在内生性(Endogeneity)、矢量性(Vectority)、指示性(Indexicality)、针对性(Pertinence)等四个方面的缺憾。(3)忽视研究目标的指向性、科学问题的针对性、研究对象的特殊性、人地关系的复杂性以及研究者的主观性等,是造成PSR模型应用陷阱的主要因素。最后,本文提出PSR模型的优化与改善路径,以期为生态环境领域的PSR理论实证和实践应用提供参考。

关键词：压力-状态-响应(PSR)模型陷阱生态环境人地关系

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Concentration control of volatile organic compounds by ionic liquid absorption and desorption

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Chinese Journal of Chemical Engineering 2019年第10期27卷 2383-2389页

作者： xiaobin ma MinyanWu Shuo Liu Jinxing Huang Bin Sun Ying Zhou Qiulian Zhu Hanfeng Lu Institute of Catalytic Reaction Engineering College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014China Hangzhou Runxin Technology Co.Ltd. Hangzhou 310014China

Volatile organic compounds(VOCs)are difficult to be eliminated safely and effectively because of their large concentration fluctuations.Thus,maintaining a stable concentration of VOCs is a significant study.In this research,H2O,Tween-80,[Emim]BF4,[Emim]PF6,and[Hnmp]HSO4 were applied to absorb and desorb simulated VOCs.The ionic liquid[Emim]BF4 demonstrated the best performance and was thus selected for further experiments.As the ionic liquid acted as a buffer,the toluene concentration with a fluctuation of 2000–20000 mg·m-3 was stabilized at 6000–12000 mg·m-3.Heating distillation(90°C)was highly efficient to recover[Emim]BF4 from toluene.The regenerated[Emim]BF4 could retain its initial absorption capacity even after multiple cycles.Moreover,[Emim]BF4 had the same buffer function on various aromatic hydrocarbons.

关键词： Volatile organic compounds Concentration fluctuation Absorb and desorb Ionic liquid Buffer