检索结果-南通市图书馆

La3+ substitution-adjusted magnetic and optical properties with enhanced photocatalytic activity and stability of copper zinc nickel ferrites for wastewater treatment applications

引用

journal of Rare Earths 2025年第2期43卷 319-328页

作者： n.S.al-Bassami General Studies Department Jubail Industrial College

Copper-zinc-nickel（Cu-Zn-ni） ferrite nanoparticles are used for wastewater treatment ***,low degradation efficiency and stability are two main issues that make them unsuitable for actual production *** this paper,the citrate-nitrate auto-combustion method was applied for the formation of Cu0.5Zn0.25ni0.25LaxFe2-xO4;（0≤x≤0.1;step 0.02）(CZnL) *** the substitution process entails the replacement of a small ion with a larger one,the lattice constant and crystallite size does not exhibit a consistent incremental *** behavior is justified and *** size of all the CZnL ferrite nanoparticles is in the range of 8-12 nm,and the lattice constant is in the range of 8.6230 to 8.4865 *** morphological analysis conducted using field emission-scanning electron microscopy（FE-SEM） reveals that the CZnL exhibits agglomerated spherical *** energy dispersive X-ray spectrameter（EDAX） analysis was employed to confirm the elemental composition of CZnL *** the process entails the substitution of Fe3+magnetic ions with nonmagnetic ions La3+,the magnetic parameters of CZnL nanoferrites show a general decreasing trend as *** 20 K,saturation magnetization Ms shows an overall drop in its values from 59.302 emu/g at x=0.0-41.295 emu/g at x=0.1,the smallest value of 37.87 emu/g is recorded at x=*** highest coercivity（Hc=125.9 Oe） and remanence（Mr=13.32 emu/g） are recorded for x=0.08 and x=0.04 nanoferrite,*** band gap of all the CZnL nanoferrites was determined using the Kubelka-Munk function and Tauc plot for direct permitted *** doping modifies the band gap（within 1.86-1.75 eV）,increases light absorption,induces efficient e/h separation and charge migration to *** nanoferrite Cu0.5Zn0.25ni0.25La0.06Fe1.94O4achieves a degradation efficiency of 97.3% for methylene blue（MB） dye removal after just 60 *** five recycling processes,the nanoc

关键词： Copper-zinc-nickel Ferrite Photocatalytic properties Rare earths Wastewater treatment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

引用

Eye and Vision 2019年第1期6卷 322-330页

作者： Ke Cao Srujana Sahebjada Andrea j.richardson Paul n.Baird Centre for Eye Research Australia Royal Victorian Eye and Ear HospitalMelbourneAustralia. Department of Surgery OphthalmologyThe University of Melbourne32 Gisborne StreetEast MelbourneVIC 3000Australia

Background:Keratoconus(KC)is a common corneal condition with an unknown gender *** numerous studies have investigated the genetic component of KC,no specific genes have yet been attributed to the *** recently reported posterior segment changes occurring in the eyes of KC ***,it is not clear whether these changes are part of KC pathogenesis or reflect changes in anatomical features of the eye manifested by changes at the *** retinal changes represent the main characteristics observed in agerelated macular degeneration(AMD)and that pleiotropy has been demonstrated between different eye diseases,we wished to assess if known AMD associated genes were also associated with ***:A total of 248 KC subjects and 366 non-KC(control)subjects were recruited from public and private clinics in Melbourne for this *** single nucleotide polymorphisms(SnPs)previously associated with AMD,including rs10490924(ARMS2/HTRA1),rs10737680(CFH),rs13278062(TnFRSF10A),rs1864163(CETP),rs2230199(C3),rs3130783(IER3/DDR1),rs334353(TGFBR1),rs3812111(COL10A1),rs429608(C2/CFB),rs4420638(APOE),rs4698775(CFI),rs5749482(TIMP3),rs6795735(ADAMTS9),rs8017304(RAD51B),rs8135665(SLC16A8),rs920915(LIPC),rs943080(VEGFA),rs9542236(B3GalTL)and rs13081855(COL8A1/FILIP1L),were genotyped in this *** regression was applied to evaluate the association between these SnPs and KC on both genders together,as well as each gender *** regression was also applied to assess the association between SnPs and corneal *** correction was applied to adjust for multiple ***:Genotyping data were available for 18 *** SnP,rs6795735(ADAMTS9)was significantly associated with KC(p=3.5×10−4)when both genders were assessed,whereas rs5749482(TIMP3)was only associated in males(p=7.7×10−4)following Bonferroni multiple ***,when the covariates of age and gender were included,the associations became non-sign

关键词： Keratoconus Gender Genetic Age-related macular degeneration

来源：

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

Experimental Study of Forced Convective Heat Transfer in a Copper Tube Using Three Types of nanofluids

引用

Fluid Dynamics & Materials Processing 2025年第2期21卷 351-370页

作者： Zahraa n.Hussain jamal M.ali Hasan S.Majdi Abbas j.Sultan H.al.naseri Department of Chemical Engineering University of Technology-IraqBaghdad10066Iraq Department of Chemical Engineering and Petroleum Industries Al-Mustaqbal UniversityBabylon51001Iraq Chemical Engineering Department College of EngineeringTikrit UniversityTikrit34001Iraq

The use of nanofluids as heat transfer media represents an innovative strategy to enhance heat transfer *** study investigates experimentally the turbulent convective heat transfer characteristics of waterbased nanofluids containing TiO_(2),CuO,and graphene nanoplatelet(GnP)nanoparticles as they flow through a copper *** the dynamic viscosity and thermal conductivity of these nanofluids were modeled and experimentally measured across varying nanoparticle concentrations(0.01,0.02,and 0.03 vol.%)and temperatures(25℃,35℃,and 45℃).The findings indicate that the behavior of nanofluids depends on the parameter used for comparison with the base ***,both the friction factor and heat transfer coefficient increase with higher nanoparticle volume concentrations at a constant Reynolds *** results further reveal that the GnP/water nanofluid,with a volume concentration of 0.03%at 45℃,exhibit the highest nusselt number,followed by the CuO/water and TiO_(2)/water nanofluids,with respective increases of 17.8%,11.09%,and 8.11%.

关键词： nanofluid heat transfer coefficient thermal conductivity heat transfer enhancement

来源：

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

Atomically precise M-n-C electrocatalysts for oxygen reduction:Effects of inter-site distance,metal-metal interaction,coordination environment,and spin states

引用

journal of Energy Chemistry 2025年第2期101卷 132-155页

作者： junfeng Huang Saira Ajmal Anuj Kumar jianwen Guo Mohammed Mujahid alam Abdullah G.al-Sehemi Ghulam Yasin School of Mechanical Engineering Dongguan University of Technology nano-Technology Research Laboratory Department of Chemistry GLA University Department of Chemistry College of Science King Khalid University School of Environmental Science and Engineering Tianjin University State Key Laboratory of Chemical Resource Engineering College of Materials Science and Engineering Beijing University of Chemical Technology

Inspired by molecular catalysts,researchers developed atomically precise nitrogen-coordinated single or dual metal sites imbedded in graphitized carbon（M-n-C） to fully utilize metallic sites for *** catalysts performed remarkably well in the electrocatalytic oxygen reduction reaction（ORR） due to their distinct coordination and electrical structures,nonetheless,their maximum efficacy in practical applications has yet to be *** agenda identifies tailoring the coordination environment,spin states,intersite distance,and metal-metal interaction as innovative approaches to regulate the ORR performance of these ***,it is necessary to undertake a precise assessment of these methodologies and the knowledge obtained to be implemented in the design of future M-n-C catalysts for ***,this review aims to analyze recent progress in M-n-C ORR catalysts,emphasizing their innovative engineering with aspects such as alteration in intersite distance,metal-metal interaction,coordination environment,and spin ***,we critically discuss how to logically monitor the atomic structure,local coordination,spin,and electronic states of M-n-C catalysts to modulate their ORR *** have also highlighted the challenges associated with M-n-C catalysts and proposed suggestions for their future design and fabrication.

关键词： Activity descriptors Electrocatalysis M-n-C electrocatalysts ORR Spin states

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Effects of rare-earth Pr3+-Dy3+ doping on structural,magnetic,optical and dielectric properties of Zn2Y hexaferrite

引用

journal of Rare Earths 2025年第2期43卷 329-336页

作者： Ibrahim Mohammed Mohamed E.El Sayed ali Shawabkeh Mohammad n.Murshed Ibtehaj F.alshdoukhi Zeinhom M.El-Bahy j.Mohammed A.K.Srivastava Department of Physics Lovely Professional University Department of Science Technology Waziri Umaru Federal Polytechnic Birnin Kebbi Physics Department Faculty of Science and ArtsKing Khalid University College of Engineering and Technology American University of the Middle East Department of Basic Sciences College of Science and Health ProfessionsKing Saud Bin Abdulaziz University for Health ScienceKing Abdullah International Medical Research Center Department of Chemistry Faculty of ScienceAl-Azhar University Department of Physics Faculty of ScienceFederal University Dutse

This study was conducted to investigate the properties of Pr3+-Dy3+doped Zn2Y-type hexaferrite for potential technological applications.X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR） and field-emission scanning electron microscopy（FESEM） were used to analyze structural *** crystallite size in the synthesized samples varies between 57.54 and 68.57 *** vibrational bands at 400 and 600 cm-1,common to all hexaferrites,were confirmed through *** FESEM analysis reveals an agglomeration of magnetic grains and a decrease in the average grain size from 1.24 to1.06 μ*** M-H loops show that,with x values of 0.0,0.1,and 0.2,the saturation magnetization is determined to be 34.76,34.23,and 32.52 emu/g,*** corresponding coercivity values are21.24,30.39,and 33.99 ***-visible spectroscopy using Tauc theory reveals an increase in the optical band gap from 2.32 to 2.50 eV,indicating a tunable energy band structure by incorporating Pr3+-Dy3+*** dielectric constant increases,whereas AC conductivity decreases with increased Pr3+-Dy3+*** obtained results suggest the potential suitability of these materials for various technological applications.

关键词： Dielectric constant Magnetic hysteresis Optical band gap Pr3+-Dy3+ Rare earths Zn2Y-type hexaferrite

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Green synthesis of glycolic acid through the electrocatalytic reduction of oxalic acid over black TiO_(2): An experimental and theoretical study

引用

journal of Energy Chemistry 2025年第1期100卷 544-556页

作者： Hugo Olvera-Vargas Oscar Andrés jaramillo-Quintero Luis Darío alarcón León Orlando Castro-Ocampo Christian A.Celaya Marina E.Rincón jesús Muñiz Instituto de Energías Renovables Universidad Nacional Autónoma de México(IER-UNAM)Priv.Xochicalco s/nCol.CentroTemixcoMorelos.CP 62580Mexico Centro de nanociencias y nanotecnología Universidad Nacional Autónoma de México(UNAM)Km 107Carretera Tijuana-EnsenadaEnsenadaB.C.C.P.22800Mexico

Herein,we present the electrocatalytic four-electron hydrogenation of oxalic acid into glycolic acid using black TiO_(2)as an *** acid is an abundant compound found in several sources of organic *** results showed a high selectivity of black TiO_(2)toward glycolic acid,with the formation of glyoxylic acid being the rate-limiting step (glyoxylic acid is the two-electron intermediate).The highest Faradaic efficiency (FE) of 69.6%±8.3% was achieved at 10.2 mA cm^(-2)in 4 h of electrolysis using an H-type cell operated at room temperature,with 50.2%±3.8% of oxalic acid conversion (degradation kinetic constant k=0.0042±0.0001 min-1),58.8%±7.0%of reaction yield and 1.2±0.18 g L-1of glycolic acid production.A theoretical model of black TiO_(2)coming from anatase TiO_(2)was implemented by introducing Ti3+defects,which gave black TiO_(2)the theoretical capability to easily transform oxalic acid into glycolic acid as experimentally *** reaction mechanism was supported and described in detail by density functional theory calculations,which revealed that surface Ti^(3+)states were the main catalytic *** is the first time that a detailed step-by-step mechanism at the atomic level has been proposed for this electrocatalytic reaction,which represents a valuable contribution to the understanding of this process of high energy/environmental *** is also the first time that black TiO_(2)has been used as an electrocatalyst for this sustainable process.

关键词： Chemical energy storage Electrochemical hydrogenation Density functional theory Renewable energy Oxalic acid

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Distribution and Sources of Polycyclic Aromatic Hydrocarbon (PAH) in Marine Environment of China

引用

Chinese journal of Oceanology and Limnology 2004年第2期22卷 136-145页

作者：郑金树 Bruce j.richardson O.Shouming 郑建华 Third Institute of Oceanography State Oceanic Administration Xiamen 361005 China Depaotment of Biology & Chemistry City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong SAR Xiamen Environmental Sciences Research Institute Xiamen 361006

Polycyclic aromatic hydrocarbons (PAHs) are potentially carcinogenic and mutagenic compounds that have raised considerable environmental concern. The highest concentrations of PAHs in the coastal sediment samples in China was 5.8-11.0μg/g (dry weight) in the core from the Huangpu River, Shanghai. The second highest concentration of PAHs was 4.42μg/g (dry weight) in surface sediment of Victoria Harbour in Hong Kong, and 5.73μg/g (dry weight) in sediment of jiaozhou Bay, Qingdao City. The low concentrations of PAHs were always in the sediments far away from industrial zones and cities, and ranged from 0.10 to 0.30μg/g (dry weight). Several environmental parameters are considered for the identification of sources of PAHs in marine environment. High proportion of naphthal.ne, low molecular weight PAHs and alkylated PAHs, plus high ratio of phenanthrene to anthracene (>15) and low ratio of fluoranthene to pyrene (nic source. According to these parameters, the Changjiang (Yangtze) River estuary of Shanghai, jiaozhou Bay of Qingdao City, Zhujiang (Pearl) River mouth, jiulong River mouth and most of Hong Kong coastal waters were heavily contaminated by PAHs from petrogenic sources. However, PAHs in rural coastal areas were dominated by pyrolytic origin PAHs. This review clearly showed that oil pollution and incomplete combustion of oil, coal and biomass are the main reason for PAHs anormalies in the study areas.

关键词： polycyclic aromatic hydrocarbon (PAH) marine pollution China coastal areas environmental protection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

alloyed nanostructures integrated metal-phenolic nanoplatform for synergistic wound disinfection and revascularization

引用

Bioactive Materials 2022年第10期7卷 95-106页

作者： Yi Xie Shengqiu Chen Xu Peng Xiaoling Wang Zhiwei Wei joseph j.richardson Kang Liang Hirotaka Ejima junling Guo Changsheng Zhao College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduSichuan610065China BMI Center for Biomass Materials and nanointerfaces College of Biomass Science and EngineeringSichuan UniverisityChengduSichuan610065China Laboratory Animal Center Sichuan UniversityChengduSichuan610065China School of Chemical Engineering Graduate School of Biomedical Engineeringand Australian Centre for NanoMedicineUniversity of New South WalesSydneyNSW2052Australia Department of Materials Engineering School of EngineeringThe University of Tokyo7-3-1 HongoBunkyo-kuTokyo113􀀀8656Japan Bioproducts Institute Departments of Chemical and Biological EngineeringThe University of British ColumbiaVancouverBCV6T 1Z4Canada School of Chemical Engineering Sichuan UniversityChengduSichuan610065China

new materials for combating bacteria-caused infection and promoting the formation of microvascular networks during wound heal.ng are of vital *** antibiotics can be used to prevent infection,treatments that can disinfect and accelerate wound heal.ng are ***,we engineer a coating that is both highly compatible with current wound dressing substrates and capable of simultaneously disinfecting and revascularizing wounds using a metal-phenolic nanoplatform containing an alloyed nanostructured architecture(Ag@Cu-MPnnC).The alloyed nanostructure is formed by the spontaneous co-reduction and catalytic disproportionation reaction of multiple metal ions on a foundation metal-phenolic supramolecular *** synergistic presence of metals greatly improves the antibacterial activity against both Gram-negative and Gram-positive pathogenic bacteria,while demonstrating negligible cytotoxicity to normal *** infected rat models,the Ag@Cu-MPnnC could kill bacteria efficiently,promoting revascularization and accelerate wound closure with no adverse side effects in infected in vivo *** other words,this material acts as a combination therapy by inhibiting bacterial invasion and modulating bio-nano interactions in the wound.

关键词： Metal-phenolic network Wound heal.ng Antibacterial activity Revascularization

来源：

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

janus kinase inhibitors are potential therapeutics for amyotrophic lateral sclerosis

引用

Translational.neurodegeneration 2023年第1期12卷 225-241页

作者： Peter j.richardson Daniel P.Smith alex de Giorgio Xenia Snetkov joshua almond-Thynne Sara Cronin Richard j.Mead Christopher j.McDermott Pamela j.Shaw BenevolentAI 4-8 Maple StreetLondon W1T 5HDUK BenevolentAI 15 MetroTech Centre8th FLBrooklynNY 11201USA Sheffield Institute for Translational.neuroscience Faculty of MedicineDentistry and HealthUniversity of SheffieldSheffieldUK nIHR Sheffield Biomedical Research Centre University of Sheffield and Sheffield Teaching Hospitals NHS Foundation TrustSheffieldUK

Amyotrophic lateral sclerosis(alS)is a poorly treated multifactorial.neurodegenerative disease associated with multiple cell types and subcellular *** with other multifactorial diseases,it is likely that drugs will need to target multiple disease processes and cell types to be *** review here the role of janus kinase(jAK)/Signal transducer and activator of transcription(STAT)signalling in alS,confirm the association of this signalling with fundamental alS disease processes using the BenevolentAI Knowledge Graph,and demonstrate that inhibitors of this pathway could reduce the alS pathophysiology in neurons,glia,muscle fibres,and blood ***,we suggest that inhibition of the jAK enzymes by approved inhibitors known as jakinibs could reduce STAT3 activation and modify the progress of this *** of the jakinibs highlights baricitinib as a suitable candidate due to its ability to penetrate the central.nervous system and exert beneficial effects on the immune ***,we recommend that this drug be tested in appropriately designed clinical trials for alS.

关键词： janus kinase STAT3 Amyotrophic lateral sclerosis

来源：

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

Tuning electronic properties of cobalt phthalocyanines for oxygen reduction and evolution reactions

引用

Science China Chemistry 2024年第1期67卷 398-407页

作者： jianlin jiang Zhen Liu Shuaijun Pan Xinnian Xia Bing Qin Yang Hu Xuxu Wang jiamin Lan Yu Gu Encai Ou Weijian Xu joseph j.richardson Rui Guo SInOPEC Research Institute of Petroleum Processing Co. Ltd.Beijing 100083China College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China College of Chemistry and Materials Science Hunan Agricultural UniversityChangsha 410128China Department of Chemical Engineering The University of MelbourneParkville 3010Australia College of Environmental Science and Engineering Hunan UniversityChangsha 410082China School of Engineering RMIT UniversityMelbourneVictoria 3001Australia

Metal–phthalocyanines are a class of catalytically active materials promising in energy conversion and storage fields(e.g.,electrocatalysis).However,understanding and controlling the electrochemical properties in metal-phthalocyanine systems is ***,we elucidate the electrocatalytic origins of a series of cobalt-phthalocyanine molecular catalysts and finetune their electronic properties at the atomic level,both experimentally and *** interactions between the cobalt center and the local coordination environment are regulated by introducing either electron-donating or electron-withdrawing groups on the phthalocyanine ligand,and the spin-orbit splitting of cobalt is increased by~0.15 eV compared with the nonsubstituted ***,the aminated cobalt phthalocyanine-based electrocatalysts exhibit low free energies in the ratedetermining steps of the oxygen reduction(-1.68 eV)and oxygen evolution reactions(0.37 eV).This contributes to the high electrocatalytic activity(e.g.,a halfwave potential of 0.84 V and an overpotential of 0.30 V at 10 mAcm^(-2)),featuring a high selectivity of a four-electron pathway(i.e.,a negligible by-product of hydrogen peroxide).These catalysts also exhibit exceptional kinetic current density(Tafel slope of 100 mV dec^(-1))in oxygen reduction reactions,in addition to a superior power density(158 mWcm^(-2))and a high cycling stability(>1,300 cycles)in Zn-air batteries,outperforming the commercial Pt/C and/or RuO2counterparts.

关键词： interfacial wettability molecular catalysts carbon nanotubes density functional theory electrochemistry

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：