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Pitch-derived 3D amorphous carbon encapsulated sulfur-rich cathode for aqueous Zn-S batteries

中国科学:化学英文版 2023年第9期66卷 2711-2718页

作者： Kangning Wang Jianwei Wang Ziqi Zhang Wenlin Zhang Feng Fu Yaping Du School of Chemistry&Chemical Engineering Yan’an UniversityYan’an 716000China Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional MaterialsHaihe Laboratory of Sustainable Chemical TransformationsSmart Sensing Interdisciplinary Science CenterSchool of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin 300350China

Rechargeable aqueous zinc batteries have attracted much attention due to their high security, plentiful zinc resources, and environmental friendliness. However, it can only offer limited specific capacity and energy density based on ion insertion chemistry cathode. Herein, we design a low-cost and high-energy density aqueous Zn-S battery where the conversion cathode was fabricated by pitch-derived three-dimensional(3D) amorphous carbon encapsulated industrial-grade sulfur powder. The cost of the chemical substances for this aqueous Zn-S battery might be reduced to $9.38 per kW h based on the affordable cost of the raw ingredients. It is found that the PAC/S-60.33% cathode reveals excellent electrochemical performance, including a high reversible capacity(633.5 mAh g^(-1)at 0.5 A g^(-1)), high energy density(297.5 Wh kg^(-1)), an excellent rate capability(204.5 mAh g^(-1) at 5.5 A g^(-1)), as well as good cycling stability(180 mAh g^(-1)after 400 cycles at 5.0 A g^(-1)). Besides, the reaction mechanism of the cathode was investigated using ex-situ X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), and transmission electron microscope(TEM). It was demonstrated that the cathode undergoes a conversion reaction between S and Zn S. Furthermore, the discoveries also offer prospective possibilities to fabricate more secure and inexpensive battery systems.

关键词： pitch 3D amorphous carbon sulfur-rich aqueous Zn-S batteries

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Enhanced CO_2 adsorptive performance of PEI/SBA-15 adsorbent using phosphate ester based surfactants as additives

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Journal of Environmental sciences 2015年第12期27卷 1-7页

作者： Dandan Cheng Yue Liu Haiqiang Wang Xiaole Weng Zhongbiao Wu Department of Environmental Engineering Zhejiang University Zhejiang Provincial Engineering Research Center of Industrial Boiler and Furnace Flue Gas Pollution Control

In this study,a series of polyetherimide/SBA-15： 2-D hexagonal P6 mm,Santa Barbara USA（PEI/SBA-15） adsorbents modified by phosphoric ester based surfactants（including tri（2-ethylhexyl）phosphate（TEP）,bis（2-ethylhexyl） phosphate（BEP） and trimethyl phosphonoacetate（TMPA））were prepared for CO2 *** results indicated that the addition of TEP and BEP had positive effects on CO2 adsorption capacity over PEI/*** particular,the CO2 adsorption amount could be improved by around 20% for 45PEI-5TEP/SBA-15 compared to the additive-free *** could be attributed to the decrease of CO2 diffusion resistance in the PEI bulk network due to the interactions between TEP and loaded PEI molecules,which was further confirmed by adsorption kinetics *** addition,it was also found that the cyclic performance of the TEP-modified adsorbent was better than the surfactant-free *** could be due to two main reasons,based on the results of in situ DRIFT and TG-DSC *** and more importantly,adsorbed CO2 species could be desorbed more rapidly over TEP-modified adsorbent during the thermal desorption ***,the enhanced thermal stability after TEP addition ensured lower degradation of amine groups during adsorption/desorption cycles.

关键词： CO2 adsorption Tri(2-ethylhexyl) phosphate PEI/SBA-15 adsorbent Dispersion Surfactant

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Single-molecule RNA capture-assisted droplet digital loop-mediated isothermal amplification for ultrasensitive and rapid detection of infectious pathogens

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Microsystems & Nanoengineering 2023年第5期9卷 151-160页

作者： Liying Jiang Xianghao Lan Linjiao Ren Zhiyuan Jin Xuchen Shan Mingzhu Yang Lingqian Chang School of Electrical and Information Engineering Zhengzhou University of Light Industry450002 ZhengzhouChina Academy for Quantum science and technology Zhengzhou University of Light Industry450002 ZhengzhouChina Beijing Advanced innovation Center for Biomedical Engineering School of Biological Science and Medical EngineeringBeihang University100191 BeijingChina School of Physics Beihang University100191 BeijingChina Beijing Research Institute of Mechanical Equipment 100143 BeijingChina

To minimize and control the transmission of infectious diseases,a sensitive,accurate,rapid,and robust assay strategy for application on-site screening is ***,we report single-molecule RNA capture-assisted digital RT-LAMP(SCADL)for point-of-care testing of infectious *** RNA was captured and enriched by specific capture probes and oligonucleotide probes conjugated to magnetic beads,replacing laborious RNA *** generation,amplification,and the recording of results are all integrated on a microfluidic *** assaying commercial standard samples,quantitative results precisely corresponded to the actual concentration of *** method provides a limit of detection of 10 copies mL−1 for the N gene within 1 h,greatly reducing the need for skilled personnel and precision *** ultrasensitivity,specificity,portability,rapidity and user-friendliness make SCADL a competitive candidate for the on-site screening of infectious diseases.

关键词： SCAD recording competitive

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铜冶炼过程中的砷反应行为及其处理技术的回顾

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中南大学学报:英文版 2023年第8期30卷 2510-2541页

作者：李青竹李本盛颜学磊王庆伟李圣图刘恢梁彦杰 School of Metallurgy and Environment Central South UniversityChangsha 410083China National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution Central South UniversityChangsha 410083China

砷作为五大有毒元素之一,其对生物体和生态环境的健康威胁已引起公众的广泛关注。有色金属冶炼,特别是铜冶炼,是砷的重要人为来源,应被列为重点关注对象。因此,明确砷在铜冶炼过程中的行为,对铜冶炼企业的正常生产和环境保护具有重要意... 详细信息

砷作为五大有毒元素之一,其对生物体和生态环境的健康威胁已引起公众的广泛关注。有色金属冶炼,特别是铜冶炼,是砷的重要人为来源,应被列为重点关注对象。因此,明确砷在铜冶炼过程中的行为,对铜冶炼企业的正常生产和环境保护具有重要意义。本工作简要介绍了冶炼用工业铜矿物和铜矿中砷的赋存形式,以及铜冶炼工艺的演变。此外,还分析了砷在有代表性的铜冶炼过程中的挥发、转化和分布行为,明确了其流向和富集规律。研究了其他矿物成分(Cu、Pb、Zn、Fe、Ca、Si)与砷在冶炼副产品(铜渣和烟尘)形成过程中的相互作用,阐明了砷污染物的形成机制。最后,分析了冶炼烟气、烟尘和铜渣中砷的控制技术,提出了未来通过将砷污染物转化为金属砷来回收砷的可能策略。

关键词： arsenic copper smelting heavy metal pollution transformation disposal technique

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Schisandrin B exerts anticancer effects on human gastric cancer cells through ROS-mediated MAPK,STAT3,and NF-κB pathways

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BIOCELL 2023年第1期47卷 195-204页

作者： TIANZHU LI YU ZHANG TONG ZHANG YANNAN LI HUI XUE JINGLONG CAO WENSHUANG HOU YINGHUA LUO CHENGHAO JIN Department of Molecular Biology College of Basic Medical ScienceChifeng UniversityChifeng024000China Department of Biochemistry and Molecular Biology College of Life Science and TechnologyHeilongjiang Bayi Agricultural UniversityDaqing163319China Department of Grass science College of Animal Science and Veterinary MedicineHeilongjiang Bayi Agricultural UniversityDaqing163319China National Coarse Cereals Engineering Research Center Daqing163319China

Schisandrin B(Sch B)is a monomer with anti-cancer and anti-inflammatory effects,which are isolated from the plant Schisandra chinensis(Turcz)*** investigated the anti-gastric cancer(GC)effects of Sch B and its underlying molecular *** Cell Counting Kit-8 assay was used to determine the effects of Sch B on the viability of GC and normal cell ***/propidium iodide staining and flow cytometry were used to assess the apoptosis induction of Sch *** blotting was used to evaluate the effects of Sch B on downstream apoptotic *** DCFH-DA fluorescent probe was used to assess the regulatory effects of Sch B on reactive oxygen species(ROS)levels and related signaling pathways in GC *** results showed that Sch B could regulate the phosphorylation level of mitogen-activated protein kinase(MAPK)by upregulating ROS accumulation in gastric cancer cells,and then reduce the expression of nuclear factor kappa B(NF-κB)and phosphorylated transcription 3(p-STAT3).In addition,Sch B downregulated the cell cycle proteins cyclin-dependent kinase 2/4/6 and cyclin D1/E,and arrested cells in the G0/G1 ***,it also inhibited cell migration,which was reversed with Nacetylcysteine *** summary,Sch B has killing effects on GC cells by upregulating the production of intracellular ROS and regulating the MAPK/STAT3/NF-κB signaling pathway,leading to the migration arrest and apoptosis of GC cells.

关键词： Schisandrin B Gastric cancer Reactive oxygen species Apoptosis Migration Cell cycle

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Efficient hydrogen peroxide production enabled by exploring layered metal telluride as two electron oxygen reduction reaction electrocatalyst

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Journal of Energy Chemistry 2023年第12期87卷 247-255,I0007页

作者： Yingming Wang Hongyuan Yang Zhiwei Liu Kui Yin Zhaowu Wang Hui Huang Yang Liu Zhenhui Kang Ziliang Chen Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-based Functional Materials and DevicesJoint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123JiangsuChina School of Physics and Engineering Longmen Laboratory Henan University of Science and TechnologyLuoyang 471023HenanChina Macao Institute of Materials science and Engineering(MIMSE) MUST-SUDA Joint Research Center for Advanced Functional MaterialsMacao University of Science and TechnologyTaipa 999078MacaoChina Suzhou Weimu Intelligent System Co. Ltd.Suzhou 215123JiangsuChina

It is of great interest to develop the novel transition metal-based electrocatalysts with high selectivity and activity for two electron oxygen reduction reaction(2e^(-) ORR).Herein,the nickel ditelluride(NiTe_(2)) with layered structure was explored as the 2e^(-) ORR electrocatalyst,which not only showed the highest 2e^(-) selectivity more than 97%,but also delivered a slight activity decay after 5000 cycles in alkaline ***,when NiTe_(2) was assembled as the electrocatalyst in H-type electrolyzer,the on-site yield of H_(2)O_(2) could reach up to 672 mmol h^(-1)g^(-1) under 0.45 V *** in situ Raman spectra,theoretical calculation and post microstructural analysis synergistically unveiled that such a good 2e^(-) ORR performance could be credited to the intrinsic layered crystal structure,the high compositional stability,as well as the electron modulation on the active site Ni atoms by neighboring Te atoms,leading to the exposure of active sites as well as the optimized adsorption free energy of Ni to –*** inspiringly,such telluride electrocatalyst has also been demonstrated to exhibit high activity and selectivity towards 2e^(-) ORR in neutral media.

关键词： Transition metal telluride Oxygen reduction reaction Charge polarization Activity and selectivity Hydrogen peroxide

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Immobilization of Oxyanions on the Reconstructed Heterostructure Evolved from a Bimetallic Oxysulfide for the Promotion of Oxygen Evolution Reaction

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Nano-Micro Letters 2023年第10期15卷 547-564页

作者： Kai Yu Hongyuan Yang Hao Zhang Hui Huang Zhaowu Wang Zhenhui Kang Yang Liu Prashanth W.Menezes Ziliang Chen Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon‑Based Functional Materials and DevicesJoint International Research Laboratory of Carbon‑Based Functional Materials and DevicesSoochow UniversitySuzhou 215123People’s Republic of China Department of Chemistry:Metalorganics and Inorganic Materials Technical University of BerlinStrase Des 17 Juni 135.Sekr.C210623 BerlinGermany Materials Chemistry Group for Thin Film Catalysis–CatLab Helmholtz-Zentrum Berlin fur Materialien und EnergieAlbert‑Einstein‑Str.1512489 BerlinGermany School of Physics and Engineering Longmen LaboratoryHenan University of Science and TechnologyLuoyang 471023People’s Republic of China

Efficient and durable oxygen evolution reaction(OER)requires the electrocatalyst to bear abundant active sites,optimized electronic structure as well as robust component and mechanical ***,a bimetallic lanthanum-nickel oxysulfide with rich oxygen vacancies based on the La_(2)O_(2)S prototype is fabricated as a binder-free precatalyst for alkaline *** combination of advanced in situ and ex situ characterizations with theoretical calculation uncovers the synergistic effect among La,Ni,O,and S species during OER,which assures the adsorption and stabilization of the oxyanion SO_(4)^(2-)onto the surface of the deeply reconstructed porous heterostructure composed of confining Ni OOH nanodomains by La(OH)_3 *** coupling,confinement,porosity and immobilization enable notable improvement in active site accessibility,phase stability,mass diffusion capability and the intrinsic Gibbs free energy of oxygen-containing *** optimized electrocatalyst delivers exceptional alkaline OER activity and durability,outperforming most of the Ni-based benchmark OER electrocatalysts.

关键词： Lanthanum-nickel oxysulfide Rare earth metal Immobilization of oxyanions Structural reconstruction Oxygen evolution catalysis

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纳米CoCrCuFeNi高熵合金原子尺度的实时变形行为

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Transactions of Nonferrous Metals Society of China 2023年第4期33卷 1156-1163页

作者：仝永刚田楠陈浩张显程胡永乐吉希希张明军赵超杰长沙理工大学汽车与机械工程学院长沙410114 华东理工大学机械与动力工程学院上海200237

通过分子动力学方法分别在2×10^(8)~1×10^(10)s^(-1)的不同应变率和10~1200 K的不同温度下进行拉伸试验,并研究纳米CoCrCuFeNi高熵合金的实时变形行为。结果表明,在高温和低应变速率下的主要变形机制是晶界滑移。随着温度的降低和应... 详细信息

通过分子动力学方法分别在2×10^(8)~1×10^(10)s^(-1)的不同应变率和10~1200 K的不同温度下进行拉伸试验,并研究纳米CoCrCuFeNi高熵合金的实时变形行为。结果表明,在高温和低应变速率下的主要变形机制是晶界滑移。随着温度的降低和应变速率的增加,位错滑移取代晶界滑移来控制塑性变形,进而提高合金的强度。此外,为进一步研究晶界对力学行为的影响,对具有不同晶粒尺寸的合金进行模拟。结果发现,当晶粒尺寸过小时,纳米高熵合金的强度随着晶粒尺寸的增加而增加,表现出反Hall-Petch关系。

关键词：纳米高熵合金错位演化变形机制应变速率晶粒尺寸

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A Sub-Nanostructural Transformable Nanozyme for Tumor Photocatalytic Therapy

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Nano-Micro Letters 2022年第6期14卷 282-293页

作者： Xi Hu Nan Wang Xia Guo Zeyu Liang Heng Sun Hongwei Liao Fan Xia Yunan Guan Jiyoung Lee Daishun Ling Fangyuan Li Institute of Pharmaceutics Hangzhou Institute of Innovative MedicineCollege of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058People’s Republic of China Frontiers science Center for Transformative Molecules State Key Laboratory of Oncogenes and Related GenesSchool of Chemistry and Chemical EngineeringNational Center for Translational MedicineShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Department of Clinical Pharmacy The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003People’s Republic of China WLA Laboratories Shanghai 201203People’s Republic of China Department of Biomedical-Chemical Engineering The Catholic University of Korea43 Jibong-roWonmi-guBucheon-SiGyeonggi-do 14662Republic of Korea

The structural change-mediated catalytic activity regulation plays a significant role in the biological functions of natural ***,there is virtually no artificial nanozyme reported that can achieve natural enzyme-like stringent spatiotemporal structure-based catalytic activity ***,we report a subnanostructural transformable gold@ceria(STGC-PEG)nanozyme that performs tunable catalytic activities via near-infrared(NIR)light-mediated sub-nanostructural *** gold core in STGC-PEG can generate energetic hot electrons upon NIR irradiation,wherein an internal sub-nanostructural transformation is initiated by the conversion between CeO;and electron-rich state of CeO;-x,and active oxygen vacancies generation via the hot-electron ***,the sub-nanostructural transformation of STGC-PEG enhances peroxidase-like activity and unprecedentedly activates plasmon-promoted oxidase-like activity,allowing highly efficient low-power NIR light(50 m W cm;)-activated photocatalytic therapy of *** atomic-level design and fabrication provide a platform to precisely regulate the catalytic activities of nanozymes via a light-mediated sub-nanostructural transformation,approaching natural enzyme-like activity control in complex living systems.

关键词： Nanozymes Sub-nanostructural transformation Catalytic activity Reactive oxygen species Photocatalytic therapy

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Nature-inspired supramolecular assemblies for precise biomedical imaging and therapy

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Acta Pharmaceutica Sinica B 2022年第10期12卷 4008-4010页

作者： Yamin Liu Qiyue Wang Fangyuan Li Daishun Ling Frontiers science Center for Transformative Molecules School of Chemistry and Chemical EngineeringNational Center for Translational MedicineShanghai Jiao Tong UniversityShanghai 200240China Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsFudan UniversityShanghai 200438China Institute of Pharmaceutics College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China Hangzhou Institute of Innovative Medicine Zhejiang UniversityHangzhou 310058China

To the editor:The precise diagnosis and effective therapy of refractory diseases,such as neurodegenerative diseases,coronary heart diseases and cancers,is critical to increase the survival rate and improve the life quality of *** of the conventional small molecular medicines are heavily associated with the limitations of poor solubility,low targeting efficiency,inducing drug resistance and systemic toxicity,promoting scientists to develop new strategies for overcoming these limitations.

关键词： Supramolecular assembly Biomedical applications Diagnosis Therapy Nature-inspired

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