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In-situ construction of abundant active centers on hierarchically porous carbon electrode toward high-performance phosphate electrosorption: Synergistic effect of electric field and capture sites

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Green Energy & Environment 2024年第1期9卷 126-137页

作者： peng Zhang Fukuan Li mingming He Silu Huo Xueli Zhang Benqiang Cen Dezhi Fang Kexun Li Hao Wang College of Environmental Science and Engineering Nankai UniversityTianjin300350China MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution ControlTianjin Key Laboratory of Environmental Technology for Complex Trans-Media PollutionNankai UniversityTianjin300350China State Key Laboratory of Simulation and Regulation of Water Cycles in River Basins China Institute of Water Resources and Hydropower ResearchBeijing100038China

Phosphate removal is crucial for eutrophication control and water quality improvement.Electro-assisted adsorption,an eco-friendly elec-trosorption process,exhibited a promising potential for wastewater treatment.However,there are few works focused on phosphate electro-sorption,and reported electrodes cannot attach satisfactory removal capacities and rates.Herein,electro-assisted adsorption of phosphate via in-situ construction of La active centers on hierarchically porous carbon(LaPC)has been originally demonstrated.The resulted LaPC composite not only possessed a hierarchically porous structure with uniformly dispersed La active sites,but also provided good conductivity for interfacial electron transfer.The LaPC electrode achieved an ultrahigh phosphate electrosorption capability of 462.01 mg g^(-1) at 1 V,outperforming most existing electrodes.The superior phosphate removal performance originates from abundant active centers formed by the coupling of electricﬁeld and capture sites.Besides,the stability and selectivity toward phosphate capture were maintained well even under comprehensive conditions.Moreover,a series of kinetics and isotherms models were employed to validate the electrosorption process.This work demonstrates a deep understanding and promotes a new level of phosphate electrosorption.

关键词： Electro-assisted adsorption Electrosorption Phosphate removal Active centers MOF-derived carbon

Potassium transporter OsHAK9 regulates seed germination under salt stress by preventing gibberellin degradation through mediating OsGA2ox7 in rice

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Journal of Integrative Plant Biology 2024年第4期66卷 731-748页

作者： peng Zeng Ting Xie Jiaxin Shen Taokai Liang Lu Yin Kexin Liu Ying He mingming Chen Haijuan Tang Sunlu Chen Sergey Shabala Hongsheng Zhang Jinping Cheng National Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization Jiangsu Collaborative Innovation Center for Modern Crop ProductionHainan Yazhou Bay Seed LabJiangsu Province Engineering Research Center of Seed Industry Science and TechnologyNanjing Agricultural UniversityNanjing 210095China International Research Center for Environmental Membrane Biology Foshan UniversityFoshan 528000China School of Biological Sciences University of Western AustraliaCrawley WA 6009Australia

Soil salinity has a major impact on rice seed germination,severely limiting rice production.Herein,a rice germination defective mutant under salt stress(gdss)was identified by using chemical mutagenesis.The GDSS gene was detected via MutMap and shown to encode potassium transporter OsHAK9.Phenotypic analysis of complementation and mutant lines demonstrated that OsHAK9 was an essential regulator responsible for seed germination under salt stress.OsHAK9 is highly expressed in germinating seed embryos.Ion contents and non-invasive micro-test technology results showed that OsHAK9 restricted K^(+)efflux in salt-exposed germinating seeds for the balance of K^(+)/Na^(+).Disruption of OsHAK9 significantly reduced gibberellin 4(GA4)levels,and the germination defective phenotype of oshak9a was partly rescued by exogenous GA_(3)treatment under salt stress.RNA sequencing(RNA-seq)and real-time quantitative polymerase chain reaction analysis demonstrated that the disruption of OsHAK9 improved the GA-deactivated gene OsGA2ox7 expression in germinating seeds under salt stress,and the expression of OsGA2ox7 was significantly inhibited by salt stress.Null mutants of OsGA2ox7 created using clustered,regularly interspaced,short palindromic repeat(CRISPR)/CRISPR-associated nuclease 9 approach displayed a dramatically increased seed germination ability under salt stress.Overall,our results highlight that OsHAK9 regulates seed germination performance under salt stress involving preventing GA degradation by mediating OsGA2ox7,which provides a novel clue about the relationship between GA and OsHAKs in rice.

关键词： GDSS gibberellins potassium transporter rice salt tolerance seed germination

Mass spectrometry analysis of intact protein N-glycosylation signatures of cells and sera in pancreatic adenocarcinomas

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第1期25卷 51-64页

作者： mingming XU Zhaoliang LIU Wenhua HU Ying HAN Zhen WU Sufeng CHEN peng XIA Jing DU Xumin ZHANG Piliang HAO Jun XIA Shuang YANG Center for Clinical Mass Spectrometry College of Pharmaceutical SciencesSoochow UniversitySuzhou215123China School of Life Science and Technology ShanghaiTech UniversityShanghai201210China State Key Laboratory of Genetic Engineering Department of BiochemistrySchool of Life SciencesFudan UniversityShanghai200438China Department of Clinical Laboratory Center Zhejiang Provincial People’s HospitalPeople’s Hospital of Hangzhou Medical CollegeHangzhou310014China

Pancreatic cancer is among the most malignant cancers,and thus early intervention is the key to better survival outcomes.However,no methods have been derived that can reliably identify early precursors of development into malignancy.Therefore,it is urgent to discover early molecular changes during pancreatic tumorigenesis.As aberrant glycosylation is closely associated with cancer progression,numerous efforts have been made to mine glycosylation changes as biomarkers for diagnosis;however,detailed glycoproteomic information,especially site-specific N-glycosylation changes in pancreatic cancer with and without drug treatment,needs to be further explored.Herein,we used comprehensive solid-phase chemoenzymatic glycoproteomics to analyze glycans,glycosites,and intact glycopeptides in pancreatic cancer cells and patient sera.The profiling of N-glycans in cancer cells revealed an increase in the secreted glycoproteins from the primary tumor of MIA PaCa-2 cells,whereas human sera,which contain many secreted glycoproteins,had significant changes of glycans at their specific glycosites.These results indicated the potential role for tumor-specific glycosylation as disease biomarkers.We also found that AMG-510,a small molecule inhibitor against Kirsten rat sarcoma viral oncogene homolog(KRAS)G12C mutation,profoundly reduced the glycosylation level in MIA PaCa-2 cells,suggesting that KRAS plays a role in the cellular glycosylation process,and thus glycosylation inhibition contributes to the anti-tumor effect of AMG-510.

关键词： Pancreatic cancer Glycosylation Biomarker Glycoproteomics Mass spectrometry

Metal-center effect induced efficient charge transfer of metal-organic framework for strengthening Sb(Ⅴ)capture performance

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Nano Research 2022年第9期15卷 8516-8523页

作者： Deng You Hui Shi mingming peng Liming Yang penghui Shao Kai Yin Haozhi Wang Shenglian Luo Xubiao Luo State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan UniversityChangsha 410082China Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource utilization Nanchang Hangkong UniversityNanchang 330063China Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin UniversityTianjin 300072China

The adsorbents–adsorbates interaction is critical for resourcelization in heavy metal wastewater treatment.Nevertheless,it is still indistinct to depict the impact of metal center effect on heavy metals removal performance in metal-organic frameworks(MOFs)-based adsorbents.Herein,a series of MOFs with different metal centers of Mg(II),La(III),and Zr(IV)are rationally designed,and the effect of electronic structure on the Sb(V)removal performance is systematically investigated.The obtained La-MGs achieve Sb(V)adsorption capacity of 897.6 mg/g,which is about 1.2 and 4.5 times above average than those of Zr-MGs and Mg-MGs,respectively.On account of more edge adsorption sites achieve,the sites utilization efficiency of La-MGs(92.1%)is much better than Zr-MGs(75.0%)and Mg-MGs(20.4%).Furthermore,density functional theory(DFT)calculations reveal that La-MGs are more active than Mg-MGs and Zr-MGs,owing to the lower adsorption energy,higher charge transfer,and stronger bonding interaction,which will promote the Sb(V)removal performance.The experimental results in practical water indicate that La-MGs effectively capture antimony at low concentration,reaching drinking water standard in samples from Ganjiang River.This study opens an avenue for atomic-level insight into high-efficient absorbents design for water treatment from electronic structuremodification of active centers.

关键词： metal-organic frameworks metal center effect electronic structure theoretical calculation Sb(V)removal

A pyrazine based metal-organic framework for selective removal of copper from strongly acidic solutions

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Frontiers of Environmental Science & Engineering 2023年第3期17卷 75-86页

作者： Jiachuang Shao penghui Shao mingming peng Min Li Ziwei Yao Xiuqin Xiong Caiting Qiu Yufan Zheng Liming Yang Xubiao Luo Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource utilizationNanchang Hangkong UniversityNanchang 330063China Department of Chemical Engineering Chongqing University of Science and TechnologyChongqing 401331China

The selective capture of copper from strongly acidic solutions is of vital importance from the perspective of sustainable development and environmental protection.Metal organic frameworks(MOFs)have attracted the interest of many scholars for adsorption due to their fascinating physicochemical characteristics,including adjustable structure,strong stability and porosity.Herein,pz-UiO-66 containing a pyrazine structure is successfully synthesized for the efficient separation of copper from strongly acidic conditions.Selective copper removal at low pH values is accomplished by using this material that is not available in previously reported metal–organic frameworks.Furthermore,the material exhibits excellent adsorption capacity,with a theoretical maximum copper uptake of 247 mg/g.As proven by XPS and FT-IR analysis,the coordination of pyrazine nitrogen atoms with copper ions is the dominant adsorption mechanism of copper by pz-UiO-66.This work provides an opportunity for efficient and selective copper removal under strongly acidic conditions,and promises extensive application prospects for the removal of copper in the treatment for acid metallurgical wastewater.

关键词： Pyrazine Metal-organic frameworks Copper removal Strong acidity High selectivity

Feasible fabrication of o-phenanthroline-based polymer adsorbent for selective capture of aqueous Ag(Ⅰ)

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Chinese Chemical Letters 2023年第3期34卷 191-194页

作者： Xuan Ding Wanjun Yu Xin Sheng Hui Shi Deng You mingming peng penghui Shao Liming Yang Lingling Liu Xubiao Luo Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization Nanchang Hangkong UniversityNanchang 330063China

Devising a desirable adsorbent for efficiently selective capture of Ag(Ⅰ) from wastewater has attracted much attention but faced with huge challenges. Herein, a novel linear o-phenanthroline-based polymer L-PRL was prepared via chemical oxidative polymerization for the adsorption of Ag(Ⅰ). The maximum adsorption capacity for Ag(Ⅰ) by L-PRL is 325.8 mg/g at pH 0. In addition, L-PRL owes ascendant selectivity for Ag(Ⅰ) from aqueous solutions containing various interfering metal ions of Pb(Ⅱ), Co(Ⅱ), Ni(Ⅱ), Cd(Ⅱ)and Fe(Ⅲ). Multiple characterizations of FT-IR and XPS uncover that the N groups on L-PRL act as adsorption sites to coordinate with Ag(Ⅰ). Density functional theory(DFT) calculations further evidence the mechanism that L-PRL is provided with the admirable adsorptivity and selectivity for Ag(Ⅰ). It is mainly attributed to the most stable complexes of L-PRL with Ag(Ⅰ), which possesses shortest Ag-N bond length compared with other heavy metal ions. Furthermore, 93.5% of initial adsorption capacity is reserved after four continuous regeneration cycles, indicating that L-PRL is equipped with superior recyclability and durability, and L-PRL is capable of removing Ag(Ⅰ) in low-concentration actual Ag(Ⅰ)-containing wastewater completely. This study shed light on the rational design of polymer adsorbents and in-depth insight into selective removal of aqueous Ag(Ⅰ).

关键词： Wastewater o-Phenanthroline Polymer Adsorbent Ag(Ⅰ) Selective capture

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骨科镁基植入物表面涂层改性技术的研究进展

中华骨科杂志 2024年第1期44卷 58-64页

作者：柳伯韬胡晓东郝明明彭兆祥宁波大学附属李惠利医院关节与运动医学科宁波315040

镁及镁合金具有优异的机械性能、可降解性和生物相容性,这使其在骨科领域得到广泛关注与研究。但镁及镁合金过快的降解速度无法匹配骨骼自身愈合速度,并可能对周围细胞定植生长与分化产生不利影响,引起植入物早期松动,从而限制其在临床... 详细信息

镁及镁合金具有优异的机械性能、可降解性和生物相容性,这使其在骨科领域得到广泛关注与研究。但镁及镁合金过快的降解速度无法匹配骨骼自身愈合速度,并可能对周围细胞定植生长与分化产生不利影响,引起植入物早期松动,从而限制其在临床上的广泛应用。在解决镁植入物腐蚀速率不可控问题方面,表面涂层改性是一种可行且极具应用前景的抗腐蚀方案。表面涂层改性技术可以通过改善植入物表面骨诱导能力(如以磷酸盐陶瓷为基础的仿生涂层)或改善抗腐蚀性能(如耐磨损耐腐蚀的微弧氧化涂层、具有自修复潜力的植酸涂层)来优化骨-植入物界面的整合。在调控镁植入物降解速率的同时,还可通过复合成分改性实现促骨整合、药物传递、光热治疗等多功能应用。通过列举骨科镁植入物表面不同的涂层改性方案的优缺点、总结各种制备工艺中的关键技术以及对其复合改性方案进行探讨,可为制备满足骨科临床应用需求的多功能镁植入物提供参考。

关键词：镁假体和植入物表面改性涂层

社交网站使用与大学生认知失败:错失恐惧与手机依赖的序列中介作用

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内江师范学院学报 2024年第6期39卷 114-120页

作者：黄明明彭香萍萍乡学院教育学院江西萍乡337055

为了考察社交网站使用与大学生认知失败的关系,以574名大学生为被试,采用社交网站使用强度问卷、错失恐惧量表、手机成瘾倾向量表及认知失败问卷进行测试.结果发现,大学生社交网站使用强度、错失恐惧、手机依赖和认知失败彼此之间显著... 详细信息

为了考察社交网站使用与大学生认知失败的关系,以574名大学生为被试,采用社交网站使用强度问卷、错失恐惧量表、手机成瘾倾向量表及认知失败问卷进行测试.结果发现,大学生社交网站使用强度、错失恐惧、手机依赖和认知失败彼此之间显著性相关,社交网站使用对大学生认知失败具有显著的预测作用,错失焦虑和手机依赖在社交网站使用与大学生认知失败之间具有显著的单独中介效应,也可以形成显著的链式中介效应.社交网站使用通过错失恐惧和手机依赖的序列中介路径预测大学生认知失败.

关键词：社交网站使用错失恐惧手机依赖认知失败大学生

界面工程与等离激元效应协同作用增强的ZnO微米线同质结自驱动紫外探测器

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Science China Materials 2024年第3期67卷 842-851页

作者：唐楷沙树林万鹏翟亚林阚彩侠施大宁姜明明 College of Physics MIIT Key Laboratory of Aerospace Information Materials and PhysicsKey Laboratory for Intelligent Nano Materials and DevicesNanjing University of Aeronautics and AstronauticsNanjing 211106China

高灵敏度的自驱动紫外探测器在许多应用中都大有可为.本研究提出了一种一维ZnO基同结光电探测器,它包括表面覆盖着Ag纳米线的锑掺杂ZnO微米线(AgNWs@ZnO:Sb MW)、MgO缓冲纳米层和ZnO薄膜.该探测器在0 V偏压下对紫外光非常敏感,其性能参... 详细信息

高灵敏度的自驱动紫外探测器在许多应用中都大有可为.本研究提出了一种一维ZnO基同结光电探测器,它包括表面覆盖着Ag纳米线的锑掺杂ZnO微米线(AgNWs@ZnO:Sb MW)、MgO缓冲纳米层和ZnO薄膜.该探测器在0 V偏压下对紫外光非常敏感,其性能参数包括约7个量级的开关比、292.2 mA W^(-1)的响应度、6.9×10^(13)Jones的比探测率,以及微秒量级的快速响应速度(上升时间16.4μs,下降时间465.1μs).特别是10μW cm^(-2)的微弱紫外光时接近99.3%的外量子效率.此外,本文系统研究了MgO纳米薄膜和表面修饰AgNWs对探测器件性能增强的机理.作为自驱动光接收器,该光电二极管被进一步集成到能够实时传输信息的紫外通信系统中.此外,基于AgNWs@p-ZnO:Sb MW/i-MgO/n-ZnO的同质结9×9阵列显示出均匀的光响应分布,可用作具有良好空间分辨率的成像传感器.这项研究有望为设计高性能紫外光检测器提供一条具有低功耗和可大规模建造的途径.

关键词： interface engineering p-type ZnO:Sb microwire selfpowered photodetector imaging sensor UV optical communication plasmonic effect