检索结果-南通市图书馆

Microstructure,oxidation behavior and tribological properties of AlCrN/Cu coatings deposited by a hybrid PVD technique

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2022年第5期100卷 150-160页

作者： Dongsen Geng Haiqing Li ziliang chen Yu.X.Xu Qimin Wang School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006China

Achieving high hardness and low friction at elevated temperatures for nitride-based hard coatings has substantial scientific interest and application significance.In this study,AlCrN/Cu coatings were deposited by a hybrid PVD technique combining arc evaporation from an Al_(60)Cr_(40) target and magnetron sputtering from a Cu target in a mixed Ar and N_(2) atmosphere.The microstructure,oxidation behavior,and tribological properties of the coatings were investigated.AlCrN/Cu coatings show a dual-phase structure of(Al,Cr)N solid solution and Cu metallic phase.Excessive sputtering power of the Cu target induces the disintegration of interlayer interfaces of the nano-multilayered geometry,accompanied by a decline in hardness from above 30 GPa to 22.7 GPa.Moreover,the formation of fine CuO grains on the coating surface is conducive to reducing the friction coefficient of AlCrN/Cu when exposed to air at high temperatures.The AlCrN/Cu coating with a sputtering power of 0.5 kW obtains a friction coefficient of 0.39±0.05 after pre-oxidation at 800℃,distinctly lower than that of AlCrN,which exhibits a friction coefficient of~0.65.The further transformation of CuO to cubic Cu(Al,Cr)_(2)O_(4),which stems from the solid-state reaction of CuO,Al_(2)O_(3),and Cr_(2)O_(3),would cause a rise in friction coefficient and wear loss.The mechanism of oxidation and tribological behavior of the AlCrN/Cu coatings related to the temperature and Cu content was discussed.

关键词： AlCrN/Cu coatings Microstructure Oxidation Friction

Coupling boron-modulated bimetallic oxyhydroxide with photosensitive polymer enable highly-active and ultra-stable seawater splitting

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第12期75卷 26-37,I0002页

作者： Weiju Hao chengyu Fu Yingming Wang Kui Yin Hongyuan Yang Ruotao Yang 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 Departmentof Chemistry School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China Department of Chemistry Metalorganics and Inorganic MaterialsTechnische Universität BerlinBerlin 10623Germany

Seawater photoelectrolysis is showing huge potential in green energy conversion field,yet it is still a formidable challenge to develop one catalyst that can drive the electrolysis reaction stably,economically and efficiently.Motivated by this point,the inorganic–organic hybridization strategy is proposed to insitu construct one hierarchical electrode via concurrent electroless plating and polymerization,which assures the growth of boron-modulated nickel–cobalt oxyhydroxide nanoballs and photosensitive polyaniline nanochains on the self-supporting Ti-based foil(B-Co Ni OOH/PANI@TiO_(2)/Ti).Upon inducing photoelectric effect(PEE),the designed target electrode delivers overpotentials as low as 196 and 398 mV at 100 mA cm^(-2)for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),respectively,corresponding to an activity enhancement by about 15%as compared to those without PEE.Inspiringly,when served as bifunctional electrocatalysts for overall seawater electrolysis,it can stably maintain at 200 mA cm^(-2)with negligible decay over 72 h.Further analysis reveals that the exceptional catalytic performance can be credit to the B-CoNiOOH,polyaniline(PANI)and TiO_(2)subunit coupling-induced physically and chemically synergistic catalysis effect such as admirable composition stability,photoelectric function and adhesion capability.The finding in this contribution may trigger much more broad interest to the novel hybrid catalysts consisting of photosensitive polymer and transition metal-based electrocatalysts.

关键词： Photosensitive polymer B-modulated nanohybrid Electroless plating Photoelectric effect Seawater splitting

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

在线全文

学校读者我要写书评

暂无评论

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 stability.Herein,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 OER.The 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 barrier.Such 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 intermediates.The 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

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

在线全文

学校读者我要写书评

暂无评论

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 media.Moreover,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 vs.RHE.Further 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 –OOH.More 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

Key progresses of MOE key laboratory of macromolecular synthesis and functionalization in 2022

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第3期35卷 114-126页

作者： Xumeng Deng Kaihao chen Kai Pang Xiaoting Liu Minsong Gao Jie Ren Guanwen Yang Guangpeng Wu chengjian Zhang Xufeng Ni Peng Zhang Jian Ji Jianzhao Liu Zhengwei Mao ziliang Wu Zhen Xu Haoke Zhang Hanying Li MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

In 2022,The MOE Key Laboratory of Macromolecular Synthesis and Functionalization in Zhejiang University had achieved several important results.First,a series of well-defined dinuclear organoboron catalysts were developed to precisely control the enchainment of ether and carbonate segments during the copolymerization of CO_(2)and epoxides.Second,polyester had been synthesized through cationic copolymerization of cyclic anhydride.Third,ring-opening polymerization of carbon dioxide based valerolactone had been achieved,revealing the prospect of 3-ethylidene-6-vinyltetrahydro-2H-pyran-2-one(EVL)in utilizing CO_(2)and synthesizing functional polymers.Fourth,machine learning methods have been applied to biomaterial research,enabling high-throughput screening of functional biomaterial surfaces for implantable devices,and searching for potent antimicrobial peptides in whole combinatorial peptide libraries.Fifth,methods of characterization of biomacromolecule RNA transcription and manipulation of nucleoside modification were developed.Sixth,artificial enzymes-armed Bifidobacterium Longum probiotics were established to tune down gut inflammation.Seventh,three-dimensional(3D)printing technologies were used to engineer tough supramolecular hydrogels.Eighth,hydroplastic foaming graphene frameworks for acoustic and conductive polymer composites were provided for application.Ninth,aggregate photophysics about the nature of through-space interactions(TSIs)and manipulating their strength in small molecules with non-conjugated structure had been elucidated.Tenth,the forming mechanism of a newfound nested texture in poly(L-lactic acid)(PLLA)spherulitic films had been revealed.Finally,the isotropically dyeing mechanism of KDP single crystals grown from hydrogels have been explored.The related works are reviewed in this paper.

关键词： Polymer Catalyst Biomaterial research mRNA Hydrogel Graphene Crystal

Rapid quantification of 50 fatty acids in small amounts of biological samples for population molecular phenotyping

在线全文

学校读者我要写书评

暂无评论

Biophysics Reports 2023年第6期9卷 299-308页

作者： Pinghui Liu Qinsheng chen Lianglong Zhang chengcheng Ren Biru Shi Jingxian Zhang Shuaiyao Wang ziliang chen Qi Wang Hui Xie Qingxia Huang Huiru Tang State Key Laboratory of Genetic Engineering School of Life Sciences Human Phenome Institute Zhangjiang Fudan International Innovation Center Metabonomics and Systems Biology Laboratory at Shanghai International Centre for Molecular Phenomics Zhongshan Hospital Fudan University Wuhan Laboratory for Shanghai Metabolome Institute (SMI) Ltd

Efficient quantification of fatty-acid(FA) composition(fatty-acidome) in biological samples is crucial for understanding physiology and pathophysiology in large population cohorts. Here, we report a rapid GC-FID/MS method for simultaneous quantification of all FAs in numerous biological matrices. Within eight minutes, this method enabled simultaneous quantification of 50 FAs as fatty-acid methyl esters(FAMEs) in femtomole levels following the efficient transformation of FAs in all lipids including FFAs,cholesterol-esters, glycerides, phospholipids and sphingolipids. The method showed satisfactory interday and intra-day precision, stability and linearity(R2 > 0.994) within a concentration range of 2–3 orders of magnitude. FAs were then quantified in typical multiple biological matrices including human biofluids(urine, plasma) and cells, animal intestinal content and tissue samples. We also established a quantitative structure-retention relationship(QSRR) for analytes to accurately predict their retention time and aid their reliable identification. We further developed a novel no-additive retention index(NARI) with endogenous FAMEs reducing inter-batch variations to 15 seconds; such NARI performed better than the alkanes-based classical RI, making meta-analysis possible for data obtained from different batches and platforms. Collectively, this provides an inexpensive high-throughput analytical system for quantitative phenotyping of all FAs in 8-minutes multiple biological matrices in large cohort studies of pathophysiological effects.

关键词： Fatty-acidomics High-throughput quantification No-additive retention index Structure-retention relationship

食源性抗氧化剂缓解内分泌干扰物生殖毒性的研究进展

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

环境与职业医学 2024年第1期41卷 110-117页

作者：陈佳娴苗茂华王子亮复旦大学公共卫生学院上海200032 上海市生物医药技术研究院公共卫生与政策研究所/国家卫生健康委员会计划生育药具重点实验室/上海市疾病与健康基因组学重点实验室上海200237

内分泌干扰物(EDCs)是一类广泛存在于日常生活环境中的化学物质,可通过多种途径进入人体,危害生殖发育和健康。氧化应激(OS)是EDCs产生生殖毒性的重要基础机制之一。大量研究发现,EDCs暴露通过增加人体生殖系统的活性氧(ROS)水平,同时... 详细信息

内分泌干扰物(EDCs)是一类广泛存在于日常生活环境中的化学物质,可通过多种途径进入人体,危害生殖发育和健康。氧化应激(OS)是EDCs产生生殖毒性的重要基础机制之一。大量研究发现,EDCs暴露通过增加人体生殖系统的活性氧(ROS)水平,同时降低酶促抗氧化剂的活性和数量,进而导致氧化应激,从DNA和细胞等各个层面诱导生殖系统的损伤。许多研究结果表明,补充食源性非酶促抗氧化剂能够清除人体内的ROS,并增加酶促抗氧化剂的活性,从而降低OS水平,并进一步修复EDCs诱导的生殖损害。另外,许多食源性抗氧化剂本身也是参与生殖生理活动的重要元素,对生殖健康具有保护作用。本文归纳了EDCs的生殖毒性,包括损伤生殖细胞、干扰性激素作用和影响生殖相关基因的表观遗传调控,阐述了OS在EDCs诱导生殖毒性中的作用,进一步总结了多种维生素、微量元素以及植物中的多酚和色素等食源性抗氧化剂缓解EDCs生殖毒性的作用及相关机制,为防治EDCs的生殖毒性提供理论基础和科学依据。

关键词：内分泌干扰物食源性抗氧化剂生殖毒性氧化应激表观遗传调控

在线全文

学校读者我要写书评

暂无评论

颈内动脉闭塞非急性期再通研究进展

介入放射学杂志 2024年第5期33卷 571-575页

作者：陈松涛王子亮河南大学人民医院(河南省人民医院)介入科

颈内动脉闭塞（ICAO）在临床上并不少见。大多数研究表明，ICAO开通可降低脑卒中发生率，改善认知等。但由于其手术难度大、成功率低、并发症多，严重影响患者预后，是目前脑血管介入治疗领域的重点和难点。本文就ICAO非急性期概念、术... 详细信息

颈内动脉闭塞（ICAO）在临床上并不少见。大多数研究表明，ICAO开通可降低脑卒中发生率，改善认知等。但由于其手术难度大、成功率低、并发症多，严重影响患者预后，是目前脑血管介入治疗领域的重点和难点。本文就ICAO非急性期概念、术前影像学评估、治疗现状及围手术期常见并发症等作一简要综述。

关键词：颈内动脉闭塞非急性期血管内治疗影像学评估

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

抗肿瘤治疗相关高血压

中华心血管病杂志 2024年第6期52卷 718-722页

作者：王玥莹陈子良郑屹李朋莎刘彤天津医科大学第二医院心脏科、天津市心血管病离子与分子机能重点实验室、天津心脏病学研究所天津300211

高血压是肿瘤患者最常见的合并疾病,也是抗肿瘤治疗常见的不良反应,多种抗肿瘤药物可引起高血压的发生发展。因此,重视抗肿瘤治疗相关高血压的有效管理,不仅可以预防严重心血管事件,也能避免肿瘤患者因高血压而中断或终止抗肿瘤治疗。... 详细信息

高血压是肿瘤患者最常见的合并疾病,也是抗肿瘤治疗常见的不良反应,多种抗肿瘤药物可引起高血压的发生发展。因此,重视抗肿瘤治疗相关高血压的有效管理,不仅可以预防严重心血管事件,也能避免肿瘤患者因高血压而中断或终止抗肿瘤治疗。该文综述多种抗肿瘤治疗方法与高血压关系的最新进展,旨在强调抗肿瘤治疗相关高血压诊断、监测和治疗的重要性。

关键词：高血压化疗靶向治疗内分泌治疗蛋白酶体抑制剂