检索结果-内蒙古大学图书馆

Dual modifications of sensitizers and lanthanide ions on a two-dimensional zirconium-based metal-organic framework for photoluminescent detection

引用

CrystEngComm 2024年第22期26卷 2852-2861页

作者： Chang, Jhe-Wei Lin, Tzu-Chi Chen, You-Liang Han, Po-Chun Yang, Shang-Cheng Tsai, Meng-Dian Wu, Kevin C.-W. Kung, Chung-Wei Department of Chemical Engineering National Cheng Kung University Tainan City70101 Taiwan Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan Ph. D. Program of Green Materials and Precision Devices College of Engineering National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Chung-Li Taoyuan320 Taiwan

A two-dimensional (2D) zirconium-based metal-organic framework (Zr-MOF) with abundant terminal -OH/-OH2 groups on its nodes, ZrBTB (BTB = 1,3,5-tris(4-carboxyphenyl)benzene), is utilized as a platform for dual post-synthetic modifications (PSM) to immobilize both the benzophenone-based photosensitizer (benzophenone-4,4′-dicarboxylate, bzpdc) and terbium ions onto the 2D Zr-MOF molecular sheets. Terbium ions are installed on the 2D Zr-MOF at various temperatures to adjust the loading of terbium ions on the 2D Zr-MOF while preserving the loading of the photosensitizer. The crystallinity, morphology, porosity, and loadings of both bzpdc ligands and terbium ions are characterized for each material, and the coordinating locations of terbium ions in the Zr-MOF structure are investigated. The photoluminescence (PL) properties of these materials are then examined. Since the installed bzpdc ligand can induce a highly efficient energy transfer to the neighbouring terbium ion upon excitation, the obtained material after dual PSM (ZrBTB-bzpdc-Tb-120) can show strong PL emissions of terbium ions upon the excitation of the bzpdc ligand at 355 nm, with a PL quantum yield of 5.04%. It is more advantageous than the 2D Zr-MOF solely functionalized with terbium ions, which can only exhibit similar emissions upon the excitation of the BTB linker at a less friendly wavelength of 310 nm, with a lower PL quantum yield of 2.94%. Owing to the high chemical stability as well as good dispersity of the luminescent ZrBTB-bzpdc-Tb-120 in water, its performances in selective PL sensing of Fe(iii) ions present in aqueous solutions are investigated. © 2024 The Royal Society of Chemistry.

关键词： Carboxylation

来源：评论

学校读者我要写书评

暂无评论

Stress corrosion cracking failure of X80 carbon steel U-b end cause d by Desulfovibrio vulgaris biocorrosion

引用

Journal of Materials science & Technology 2024年第7期174卷 95-105页

作者： Zhong Li Jike Yang Shihang Lu Wenwen Dou Tingyue Gu Corrosion&Protection Center University of Science&Technology BeijingBeijing 100083China Institute of Marine Science and Technology Shandong UniversityQingdao 266237China Department of Chemical and Biomolecular Engineering Institute for Corrosion and Multiphase TechnologyOhio UniversityAthensOH 45701USA

Sulfate reducing bacteria(SRB)are widely present in oil and gas industry,causing pitting corrosion on pipeline *** corrosion cracking(SCC)often occurs in the presence of mechanical stress before pit-ting perforation failure,leading to economic losses and even catastrophic *** this study,stress distribution simulation using the finite element method(FEM),corrosion analysis techniques and elec-trochemical corrosion measurements were employed to investigate the SCC mechanism of X80 pipeline steel caused by Desulfovibrio vulgaris,which is a common SRB strain used in microbiologically influenced corrosion(MIC)*** was found that *** MIC caused sharp microcracks on an X80 U-bend coupon after only 2 weeks of immersion at 37℃in the deoxygenated ATCC 1249 culture medium inocu-lated with *** X80 U-bend coupon’s weight loss-based uniform corrosion rate for the 12 cm^(2)surface was 60%of that for the unstressed flat square coupon(2.3 mg cm^(−2)vs.3.8 mg cm^(−2)).This was likely because the square coupon had wide MIC pits,providing a larger effective surface area for more sessile cells(4.2×10^(8)cells cm^(−2)on square coupon vs.2.4×10^(8)cells cm^(−2)on U-bend coupon)to attach and harvest more *** SCC failure occurred on an X80 U-bend pre-cracked at the outer bottom after a 6-week immersion in the *** *** from MIC damage,this could also be because *** metabolism increased the availability hydrogen atoms on the steel surface,and promoted the diffusion of hydrogen atoms into the metal lattice,thus increasing the brittleness of the steel.

关键词： Stress corrosion cracking Microbiologically influenced corrosion Sulfate reducing bacteria X80 U-bend steel Tensile stress

来源：评论

学校读者我要写书评

暂无评论

A review on reactive oxygen species-induced mechanism pathways of pharmaceutical waste degradation:Acetaminophen as a drug waste model

引用

Journal of Environmental sciences 2025年第1期147卷 688-713页

作者： Saba Humayun Maan Hayyan Yatimah Alias Department of Chemistry Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia University of Malaya Centre for Ionic Liquids University of MalayaKuala Lumpur 50603Malaysia Chemical Engineering Program Faculty of Engineering and TechnologyMuscat UniversityMuscat P.C.130Oman

Innately designed to induce physiological changes,pharmaceuticals are foreknowingly hazardous to the *** oxidation processes(AOPs)are recognized as a set of contemporary and highly efficient methods being used as a contrivance for the removal of pharmaceutical *** reactive oxygen species(ROS)are formed in these processes to interact and contribute directly toward the oxidation of target contaminant(s),a profound insight regarding the mechanisms of ROS leading to the degradation of pharmaceuticals is fundamentally *** conceptualization of some specific reaction mechanisms allows the design of an effective and safe degradation process that can empirically reduce the environmental impact of *** review mainly deliberates themechanistic reaction pathways for ROS-mediated degradation of pharmaceuticals often leading to complete mineralization,with a focus on acetaminophen as a drug waste model.

关键词： Wastewater treatment Ionic liquid Hydroxyl radical Superoxide Pharmaceutical contaminant Advanced oxidation process Deep eutectic solvent Hydrogen peroxide

来源：评论

学校读者我要写书评

暂无评论

Enhancing electrochemo-mechanical properties of graphite-silicon anode in all-solid-state batteries via solvent-induced polar interactions in nitrile binders

引用

Journal of Energy Chemistry 2025年第06期 514-524页

作者： Jaecheol Choi Cheol Bak Ju Young Kim Dong Ok Shin Seok Hun Kang Yong Min Lee Young-Gi Lee Smart Materials Research Section Electronics and Telecommunications Research Institute (ETRI) Department of Semiconductor and Advanced Device Engineering University of Science and Technology (UST) Department of Energy Science & Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Department of Battery Engineering Yonsei University Department of Chemical and Biomolecular Engineering Yonsei University

All-solid-state batteries（ASSBs） with sulfide-type solid electrolytes（SEs） are gaining significant attention due to their potential for the enhanced safety and energy *** the slurry-coating process for ASSBs,nitrile rubber（NBR） is primarily used as a binder due to its moderate solubility in non-polar solvents,which exhibites minimal chemical reactivity with sulfide ***,the NBR binder,composed of butadiene and acrylonitrile units with differing polarities,exhibits different chemical compatibility depending on the subtle differences in polarity of ***,we systematically demonstrate how the chemical compatibility of solvents with the NBR binder influences the performance of *** is found to activate the acrylonitrile units,inducing an elongated polymer chain configuration in the binder solution,which gives an opportunity to strongly interact with the solid components of the electrode and the current ***,selecting anisole as a solvent for the NBR binder enables the fabrication of a mechanically robust graphite-silicon anode,allowing ASSBs to operate at a lower stacking pressure of 16 *** approach achieves an initial capacity of 480 mAh g-1,significantly higher than the 390 mAh g-1achieved with the NBR/toluene binder that has less chemical ***,internal stress variations during battery operation are monitored,revealing that the enhanced mechanical properties,achieved through acrylonitrile activation,effectively mitigate internal stress in the graphite/silicon composite anode.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Tungsten oxide-anchored Ru clusters with electron-rich and anti-corrosive microenvironments for efficient and robust seawater splitting

引用

SusMat 2024年第1期4卷 106-115页

作者： Yiming Zhang Weiqiong Zheng Huijuan Wu Ran Zhu Yinghan Wang Mao Wang Tian Ma Chong Cheng Zhiyuan Zeng Shuang Li College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduChina Department of Chemical and Biomolecular Engineering National University of SingaporeSingaporeSingapore Department of Materials Science and Engineering and State Key Laboratory of Marine PollutionCity University of Hong KongKowloonHong KongChina Shenzhen Research Institute City University of Hong KongShenzhenChina

Ruthenium(Ru)has been recognized as a prospective candidate to substitute platinum catalysts in water-splitting-based hydrogen ***,minimizing the Ru contents,optimizing the water dissociation energy of Ru sites,and enhancing the long-term stability are extremely required,but still face a great ***,we report on creating tungsten oxide-anchored Ru clusters(Ru-WO_(x))with electron-rich and anti-corrosive microenvironments for efficient and robust seawater *** from the abundant oxygen vacancy structure in tungsten oxide support,the Ru-WO_(x)exhibits strong Ru-O and Ru-W bonds at the *** study elucidates that the strong Ru-O bonds in Ru-WO_(x)may accelerate the water dissociation kinetics,and the Ru-W bonds will lead to the strong metal-support interaction and electrons transfer fromWto *** optimal Ru-WO_(x)catalysts exhibit a low overpotential of 29 and 218mVat the current density of 10 mA cm^(−2) in alkaline and seawater media,*** outstanding long-term stability discloses that the Ru-WO_(x)catalysts own efficient corrosion resistance in seawater *** believe that thiswork offers new insights into the essential roles of electron-rich and anti-corrosivemicroenvironments in Ru-based catalysts and provide a new pathway to design efficient and robust cathodes for seawater splitting.

关键词： hydrogen production microenvironment modulation noble metal catalysts seawater splitting tungsten oxide

来源：评论

学校读者我要写书评

暂无评论

Sorption-enhanced steam gasification of fine coal waste for fuel producing

引用

Journal of King Saud University - engineering sciences 2024年第2期36卷 81-88页

作者： Aprianti, Nabila Faizal, Muhammad Said, Muhammad Nasir, Subriyer Doctoral Program of Environmental Science Graduate School Universitas Sriwijaya South Sumatra Palembang30139 Indonesia Chemical Engineering Department Faculty of Engineering Universitas Sriwijaya South Sumatra Ogan Ilir30662 Indonesia

Improving the quality of syngas from fine coal waste using the sorption-enhanced gasification process is a novel technology in the production of H2. The effect of CaO on CO2 absorption and H2 increase in the steam fine coal gasification process was determined in a fixed bed gasifier. The steam gasification process took place at 650 °C using bentonite and CaO as catalysts and absorbents. Steam increased the H2 concentration in the syngas to 58 vol%. In-situ CO2 absorption is more effective with the addition of CaO. The maximum percentage of CO2 was absorbed when the Ca/C ratio 2 was 78.33 %. The H2 content in the syngas after the CO2 was absorbed increased rapidly to 75.80 vol% at a Ca-to-carbon-mole ratio (Ca/C) of 1.5 and a steam-to-feedstock ratio (S/F) of 1.5. CaO did not produce significant results for low heating value (LHV) or cold gas efficiency (CGE), with results of 12 MJ/Nm3 and 44.53 %. The dominant water gas shift reaction due to the influence of steam and CaO increased H2/CO up to 9.11, which made the syngas from this work suitable for Fischer–Tropsch synthesis. © 2022 The Authors

关键词： Carbon dioxide

来源：评论

学校读者我要写书评

暂无评论

Intermittent oxidation kinetics and metal/oxide interfacial undulation

引用

Physical Review B 2024年第8期110卷 085402-085402页

作者： Dongxiang Wu Xianhu Sun Judith C. Yang Guangwen Zhou Department of Mechanical Engineering & Materials Science and Engineering Program Department of Chemical and Petroleum Engineering

The phenomenon of oxygen adsorption induced surface restructuring is widespread across various metal-oxygen systems, yet its impact on initiating bulk oxide formation remains largely unexplored. Through in situ atomic-resolution electron microscopy observations of surface oxidation of Cu(110) and Cu85Au15(110), we unveil intermittent oxide-film growth modulated by oxygen-induced surface restructuring. This modulation is evidenced by repeated pinning of the Cu2O growth front at isolated Cu columns of the c(6×2)-O reconstruction, owing to required long-range diffusion of Cu and O atoms to the Cu2O growth front. We reveal that Cu vacancies, generated at the Cu2O growth front, are injected into the Cu2O/Cu interface, inducing hill and valley undulation of the Cu2O film. In contrast, atomic vacancies produced during the Cu85Au15(110) oxidation preferentially migrate into interfaces between Au-rich and Au-poor regions in the bulk, resulting in a flat and adherent Cu2O film. These findings demonstrate the critical role of oxygen-induced surface restructuring in modulating oxide film growth kinetics and the manipulability of the fate of injected vacancies by alloying, thereby offering insights applicable to a broader range of metal-oxygen systems for fine-tuning oxidation kinetics and enhancing oxide/metal interfacial adhesion.

关键词： Surface & interfacial phenomena Surface reconstruction Surface growth Density functional theory Transmission electron microscopy

来源：评论

学校读者我要写书评

暂无评论

Heterocycles for direct air capture and MOFs prepared from CO2 utilization†

引用

Journal of Materials Chemistry A 2024年第13期12卷 7711-7723页

作者： Du, Jingcheng Liu, Linghao Sun, Qian Song, Ziye Yao, Ayan Ma, Ji Chung, Tai-Shung Xu, Wei Zhang, Hongjun Liu, Jiangtao Department of Environmental Science and Engineering University of Science and Technology of China Hefei230052 China Department of Chemical and Biomolecular Engineering National University of Singapore 117576 Singapore Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei10607 Taiwan State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei230052 China

The technology for carbon capture, utilization, and storage (CCUS) has drawn global attention because of the rapid climate changes. Herein, a series of nitrogen-rich heterocycles (HCx–Ny) was identified for direct air capture (DAC) based on a phase change mechanism. HCx–Ny possessed a CO2 removal efficiency of up to 99% under continuous CO2 flow with a concentration of 437 ppm via spontaneous CO2 fixation because it has a high CO2 sorption capacity of 23.82 mol kg−1. Based on this phenomenon, a green and highly efficient strategy was discovered to utilize CO2 for different MOF syntheses via altering monomers and anions (SO42−, OAC−, and NO3−). Furthermore, we made a novel discovery that anions significantly affect the topological structures and morphologies of MOFs. Hence, from the discovery of nitrogen-rich heterocycles (HCx–Ny) to direct air carbon capture to the synthesis of high value-added MOFs and then to the construction of high-performance gas separation membranes, this integrated strategy provided significant insights into the development of a comprehensive CCUS technology. © 2024 Royal Society of Chemistry. All rights reserved.

关键词： Carbon dioxide

来源：评论

学校读者我要写书评

暂无评论

Fine-tuning electronic structure of N-doped graphitic carbon-supported Co-and Fe-incorporated Mo_(2)C to achieve ultrahigh electrochemical water oxidation activity

引用

Carbon Energy 2024年第7期6卷 134-149页

作者： Md.Selim Arif Sher Shah Hyeonjung Jung Vinod K.Paidi Kug-Seung Lee Jeong Woo Han Jong Hyeok Park Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoulRepublic of Korea Department of Chemistry University of North BengalRaja RammohunpurDarjeelingWest BengalIndia Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoulRepublic of Korea Pohang Accelerator Laboratory Beamline DivisionPohangRepublic of Korea European Synchrotron Radiation Facility France

Mo_(2)C is an excellent electrocatalyst for hydrogen evolution reaction(HER).However,Mo_(2)C is a poor electrocatalyst for oxygen evolution reaction(OER).Herein,two different elements,namely Co and Fe,are incorporated in Mo_(2)C that,therefore,has a finely tuned electronic structure,which is not achievable by incorporation of any one of the ***,the resulting electrocatalyst Co_(0.8)Fe_(0.2)-Mo_(2)C-80 displayed excellent OER catalytic performance,which is evidenced by a low overpotential of 214.0(and 246.5)mV to attain a current density of 10(and 50)mA cm^(-2),an ultralow Tafel slope of 38.4 mV dec^(-1),and longterm stability in alkaline *** data demonstrates that Co_(0.8)Fe_(0.2)-Mo_(2)C-80 requires the lowest overpotential(1.00 V)for OER and Co centers to be the active *** ultrahigh catalytic performance of the electrocatalyst is attributed to the excellent intrinsic catalytic activity due to high Brunauer-Emmett-Teller specific surface area,large electrochemically active surface area,small Tafel slope,and low chargetransfer resistance.

关键词： fine-tuning electronic structures heteronanostructures Mo_(2)C multimetal(Co/Fe) oxygen evolution reaction

来源：评论

学校读者我要写书评

暂无评论

Ruthenium-lead oxide for acidic oxygen evolution reaction in proton exchange membrane water electrolysis

引用

Nano Research 2024年第10期17卷 8671-8677页

作者： Feng-Yang Chen Chang Qiu Zhen-Yu Wu Tae-Ung Wi YZou Finfrock Haotian Wang Department of Chemical and Biomolecular Engineering Rice UniversityHoustonTX 77005USA Structural Biology Center X-ray Science DivisionArgonne National LaboratoryLemontIL 60439USA Department of Materials Science and NanoEngineering Rice UniversityHoustonTX 77005USA Department of Chemistry Rice UniversityHoustonTX 77005USA

Developing an active and stable anode catalyst for the proton exchange membrane water electrolyzer(PEM-WE)is a critical objective to enhance the economic viability of green hydrogen ***,the expensive iridium-based electrocatalyst remains the sole practical material with industrial-level stability for the acidic oxygen evolution reaction(OER)at the ***-based catalysts have been proposed as more cost-effective alternatives with improved activity,though their stability requires *** current urgent goal is to reduce costs and noble metal loading of the OER catalyst while maintaining robust activity and *** this study,we design a Ru-based OER catalyst incorporating Pb as a supporting *** electrocatalyst exhibits an OER overpotential of 201 mV at 10 mA·cm^(-2),simultaneously reducing Ru noble metal loading by~40%.Normalization of the electrochemically active surface area unveils improved intrinsic activity compared to the pristine RuO_(2) *** a practical stability test in a PEM-WE setup,our developed catalyst sustains stable performance over 300 h without notable degradation,underscoring its potential for future applications as a reliable anodic catalyst.

关键词： electrocatalysis oxygen evolution reaction water splitting proton exchange membrane water electrolyzer

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：