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Review of recent advances in ferrite-based materials:From synthesis techniques to electromagnetic wave absorption performance

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 591-608页

作者： Xingliang Chen Di Lan Luoting Zhou Hailing Liu Xiyu Song Shouyu Wang Zhuanyong Zou Guanglei Wu Shaoxing Key Laboratory of High Performance Fibers&Products Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang ProvinceShaoxing UniversityShaoxing 312000China School of Materials science and Engineering Hubei University of Automotive TechnologyShiyan 442002China Chinatesta(zhejiang)Testing Services co. Ltd.Shaoxing 312000China Institute of Materials for Energy and Environment State Key Laboratory of Bio-fibers and Eco-textilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China

With the booming development of electronic information science and 5G communication technology,electromagnetic radi-ation pollution poses a huge threat and damage to *** novel and high-performance electromagnetic wave(EMW)ab-sorbers is an effective method to solve the above issue and has attracted the attention of many *** a typical magnetic material,ferrite plays an important role in the design of high-performance EMW absorbers,and related research focuses on diversified synthesis methods,strong absorption performance,and refined microstructure ***,we focus on the synthesis of ferrites and their composites and introduce recent advances in the high-temperature solid-phase method,sol-gel method,chemical coprecipitation method,and solvent thermal method in the preparation of high-performance EMW *** review aims to help researchers understand the advantages and disadvantages of ferrite-based EMW absorbers fabricated through these *** also provides important guidance and reference for researchers to design high-performance EMW absorption materials based on ferrite.

关键词： ferrite electromagnetic wave absorber sol-gel method magnetic material solvent thermal method

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Decomposition process of zircon sand concentrate with CaO-NaOH

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Rare Metals 2012年第4期31卷 410-414页

作者： Zhang, Jiandong Wang, Lijun Jiang, Dongmin Division of Mineral Resources Metallurgy & MaterialsGeneral Research Institute for Nonferrous MetalsBeijing 100088China zhejiang zr-valley science & technology co.ltd Zhejiang 313220China

The decomposition process for zircon sand concentrate using mixed base of sodium hydroxide partly replaced by calcium oxide was *** is found that the decomposition rate of zircon gradually increased with the increase of the reaction temperature and *** decomposition rate is over 97% with the conditions that CaO/zircon molar ratio is 0.25 ～ 0.75 at 800 ℃ for 1 *** the decomposition rate decreased when the molar ratio was more than ***,thermogravimetry-differential thermal analysis(TG-DTA) and X-ray diffraction(XRD) were used to study the reaction mechanism of zircon decomposition process with *** results showed that Na_2O,which was generated by the reaction of CaO and Na_4SiO_4,increased the decomposition rate of zircon owing to its spread to the surface of zircon and played a role in decomposition process.

关键词： zircon decomposition calcium oxide sodium hydroxide TG-DTA

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Organic pollutant sensing for human health based on carbon dots

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Chinese Chemical Letters 2025年第1期36卷 147-157页

作者： Quan Zhang Shunjie Xing Jingqian Han Li Feng Jianchun Li Zhaosheng Qian Jin Zhou Affiliated Hospital of Shandong Second Medical University(261031 School of Clinical Medicine)School of PharmacyShandong Second Medical UniversityWeifang 261053China Shandong Botai Measurement and Testing co.ltd. Weifang 261000China college of Chemistry and Materials science Zhejiang Normal UniversityJinhua 321004China

Organic pollutants are harmful and toxic chemical substances that adversely threaten human health and the living environment all over the *** and more studies have been investigating the relationship between low level of human exposure of organic compounds and various internal *** the sake of assessing disease risk due to organic compounds contact in a particular location,it is imperative for relevant government departments to make a human health risk assessment in view of the organic pollutants'bioavailability and their dosage-response *** is inevitable to make use of an efficient method to detect organic pollutants,which is significant for public health and *** assays based on carbon dots thus would provide a very plausible candidate *** consulting a large number of literatures,we offer a comprehensive review of the sensing applications of carbon dots for organic pollutants.

关键词： Fluorescent probe Human health Organic pollutants Carbon dots Detection and sensing

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NH_(4)^(+)-Modulated Cathodic Interfacial Spatial Charge Redistribution for High-Performance Dual-Ion Capacitors

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Nano-Micro Letters 2025年第5期17卷 391-406页

作者： Yumin Chen Ziyang Song Yaokang Lv Lihua Gan Mingxian Liu Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and EngineeringTongji UniversityShanghai 200092People’s Republic of China college of Chemical Engineering Zhejiang University of TechnologyHangzhou 310014People’s Republic of China

compared with Zn^(2+),the current mainly reported charge carrier for zinc hybrid capacitors,small-hydrated-sized and light-weight NH_(4)^(+)is expected as a better one to mediate cathodic interfacial electrochemical behaviors,yet has not been *** we propose an NH_(4)^(+)-modulated cationic solvation strategy to optimize cathodic spatial charge distribution and achieve dynamic Zn^(2+)/NH_(4)^(+)co-storage for boosting Zinc hybrid *** to the hierarchical cationic solvated structure in hybrid Zn(CF_(3)SO_(3))_(2)–NH_4CF_(3)SO_(3)electrolyte,high-reactive Zn^(2+)and small-hydrate-sized NH_4(H_(2)O))(4)^(+)induce cathodic interfacial Helmholtz plane reconfiguration,thus effectively enhancing the spatial charge density to activate 20%capacity ***,cathodic interfacial adsorbed hydrated NH_(4)^(+)ions afford high-kinetics and ultrastable C···H(NH_(4)^(+))charge storage process due to a much lower desolvation energy barrier compared with heavy and rigid Zn(H_(2)O)_6^(2+)(5.81 vs.14.90 eV).consequently,physical uptake and multielectron redox of Zn^(2+)/NH_(4)^(+)in carbon cathode enable the zinc capacitor to deliver high capacity(240 mAh g^(-1)at 0.5 A g^(-1)),large-current tolerance(130 mAh g^(-1)at 50 A g^(-1))and ultralong lifespan(400,000cycles).This study gives new insights into the design of cathode–electrolyte interfaces toward advanced zinc-based energy storage.

关键词： NH_(4)^(+)-modulated cathodic interface Spatial charge redistribution Zn^(2+)/NH_(4)^(+) co-storage Dual-ion capacitor

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NH4+-Modulated Cathodic Interfacial Spatial Charge Redistribution for High-Performance Dual-Ion Capacitors

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Nano-Micro Letters 2025年第05期 399-414页

作者： Yumin Chen Ziyang Song Yaokang Lv Lihua Gan Mingxian Liu Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and EngineeringTongji University college of Chemical Engineering Zhejiang University of Technology

compared with Zn2+, the current mainly reported charge carrier for zinc hybrid capacitors, small-hydrated-sized and light-weight NH4+is expected as a better one to mediate cathodic interfacial electrochemical behaviors, yet has not been unraveled. Here we propose an NH4+-modulated cationic solvation strategy to optimize cathodic spatial charge distribution and achieve dynamic Zn2+/NH4+co-storage for boosting Zinc hybrid capacitors. Owing to the hierarchical cationic solvated structure in hybrid Zn（CF3SO3）2–NH4CF3SO3electrolyte, high-reactive Zn2+and small-hydrate-sized NH4（H2O）4+induce cathodic interfacial Helmholtz plane reconfiguration, thus effectively enhancing the spatial charge density to activate 20% capacity enhancement. Furthermore, cathodic interfacial adsorbed hydrated NH4+ions afford high-kinetics and ultrastable C···H（NH4+） charge storage process due to a much lower desolvation energy barrier compared with heavy and rigid Zn（H2O）62+（5.81 vs. 14.90 eV）. consequently, physical uptake and multielectron redox of Zn2+/NH4+in carbon cathode enable the zinc capacitor to deliver high capacity(240 mAh g-1at 0.5 A g-1), large-current tolerance(130 mAh g-1at 50 A g-1) and ultralong lifespan（400,000cycles）. This study gives new insights into the design of cathode–electrolyte interfaces toward advanced zinc-based energy storage.

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Tuning performance of Pd/Sn_(0.9)Ce_(0.1)O_2 catalyst for methane combustion by optimizing calcination temperature of support

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Rare Metals 2019年第2期38卷 107-114页

作者： Kai Shen Jia-Pan Lin Qian Xia Lu Dai Guo-Jun Zhou Yang-Long Guo Guan-Zhong Lu Wang-Cheng Zhan technology Center China Tobacco Zhejiang Industrial Co.Ltd. Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis East China University of Science and Technology

A series of 0.2 wt% Pd/Sn_(0.9)Ce_(0.1)O_2 catalysts were prepared by impregnation method based on the presynthesis of Sn_(0.9)Ce_(0.1)O_2 support prepared by co-precipitation method, and then characterized by Brunauer–Emmett–Teller(BET), X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), Raman, co chemical adsorption and hydrogen temperature-programmed reduction(H_2-TPR) techniques. The effect of calcination temperature of the composite oxide support on the catalytic performances of the Pd/Sn_(0.9)Ce_(0.1)O_2 catalyst for the CH_4 total oxidation was studied. It is found that the catalytic activity of the Pd/Sn_(0.9)Ce_(0.1)O_2 catalyst increases with the increase in calcination temperature of the Pd/Sn_(0.9)Ce_(0.1)O_2 support. The 0.2 wt% Pd/Sn_(0.9)Ce_(0.1)O_2/1100 catalyst(the Pd/Sn_(0.9)Ce_(0.1)O_2 support was calcined at 1100 ℃) exhibits the best reactive activity(T_(10)= 255 ℃). The excellent activity of the 0.2 wt% Pd/Sn_(0.9)Ce_(0.1)O_2/1100 catalyst should be attributed to the high reducibility of PdO, the excellent oxygen mobility of the support and the high content of active Pd^(2+) species on the Pd/Sn_(0.9)Ce_(0.1)O_2 catalyst.

关键词： Catalytic combustion Methane PdO SnxCe1-xO2 Calcination temperature

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Enhanced Performance of co-doped Antimony Electrode for pH Measurement in Marine Environments

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Journal of Analysis and Testing 2025年第01期 32-49页

作者： Li Zong Zhen Li Fan Yang Tao Xu Caiyun Zhang Tengfei Xu college of Chemistry and Chemical Engineering Dezhou University Key Laboratory of Advanced Drug Delivery Systems of zhejiang Province College of Pharmaceutical SciencesZhejiang University college of Textile and Clothing Dezhou University Cangnan county Qiushi Innovation Research Institute of Traditional Chinese Medicine

The antimony（Sb） electrode, despite its prevalent use for pH detection in complex environments, suffers from severe potential drift due to poor corrosion resistance, thereby impeding long-term or online applications. Intermetallic compounds show excellent resistance to corrosion and oxidation, presenting a promising avenue for improving the stability of the Sb electrode. Therefore, we fabricate an intermetallic compound-doped Sb electrode by adding various cobalt（co） contents to improve the stability of the Sb electrode without compromising the inherent pH response. It's observed that the alloy electrode exhibits a significant reduction in surface roughness, corrosion product Sb2O3content, cracks, and Sb exfoliation compared to the pure Sb electrode after the electrochemical tests, and the effect becomes more pronounced as the co content increases. The electrochemical tests further reveal that the alloy electrode exhibits better corrosion resistance than the pure Sb in various solutions, with the alloy electrode containing 80 at% Sb showing the highest corrosion resistance. Moreover,the alloy electrode containing 80 at% Sb also shows excellent sensitivity and anti-interference ability, high accuracy and reproducibility, low hysteresis, and better long-term stability, especially in seawater. These findings suggest that inexpensive co doping significantly enhances corrosion resistance, thereby reducing electrode surface alterations and eventually improving the potential stability of pure Sb electrodes without affecting the inherent pH response. Furthermore, the obtained results provide an experimental basis for the long-term operation of the alloy pH electrode in complex environments such as seawater without frequent maintenance.

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Importance of the autoclave testing parameters on the initial stage of corrosion under co2-containing geothermal environments

Corrosion Communications

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corrosion communications 2024年第3期15卷 63-78页

作者： Yong Hua Zezhou Wen Hui Chen Yue Lv Xin Li Shaobin Wang Wei Huang Cheng Su corrosion and Integrity Centre Zhejiang JIULI Hi-Tech Metals Co.Ltd Institute of Functional Surface School of Mechanical Engineering University of Leeds School of Materials and Environmental Engineering Shenzhen Polytechnic Qing Dao Sifang Kawasaki Rollingstock technology co. Ltd

Autoclave corrosion testing has been used for many years; however, few have studied the effect of its shortcomings on the formation of corrosion products and corrosion behaviour. In particular, understanding of these effects under high temperature and high pressure（HTHP） is rare. In this study, we highlighted the important parameters such as heating periods, flow rates and volume-to-surface ratios influencing carbon steel corrosion in the early stages. Especially, characterisation and protection behaviour of corrosion products associated with corrosion behaviour in the heating stage under the geothermal co2-containing environment were systematically studied via mass loss, in-situ electrochemistry and surface analysis techniques. The roles of ■, volume-to-surface ratio and flow rate influence the formation of the corrosion products in the early stage are also evaluated.

关键词： Fe 3 O 4 corrosion products Flow speeds Volume-to-surface ratios

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Pressure control as an effective method to modulate aggregative growth of nanoparticles

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Rare Metals 2021年第7期40卷 1808-1816页

作者： Jian Xu Yuan Shu Qian Xia Yang-Long Guo Guo-Jun Zhou Wang-Cheng Zhan technology Center China Tobacco Zhejiang Industrial Co.LtdHangzhou 310024China Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis East China University of Science and TechnologyShanghai 200237China

Recent studies suggested that the interactions between particles can induce aggregative nucleation and growth processes beyond those predicted by the traditional LaMer model of nanoparticle formation,but their nucleation and growth processes are still ***,we report a simple way to control the interaction between nanoparticles by manipulating the oleylamine(OAm)adsorbed on the surface of the *** size distributions of Ag nanoparticles produced at different reaction pressures were monitored as evidence for aggregative *** these kinetic data,the aggregative nucleation rate(C)of primary Ag nanoparticles under a 0.01 MPa was demonstrated to be faster than that under atmospheric *** leads to a higher uniformity of Ag nanoparticles in a shorter time(10 min)than that achievable with previous ***,Ag nanoparticles supported on TiO2 exhibited a remarkable performance in the catalytic reduction of 4-nitrophenol(4-NP).After 4 min,4-NP was completely reduced into4-aminophenol(4-AP).

关键词： Ag nanoparticles Synthesis method Pressure control Size uniformity High efficiency

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A synergistic experimental and computational study on co2 corrosion of X65 carbon steel under dispersed droplets within oil/water mixtures

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corrosion communications 2023年第4期12卷 64-75页

作者： Wenlong Ma Hanxiang Wang Hongda Guo Long Cai Xin Li Yong Hua Key Laboratory of Marine Environmental corrosion and Bio-Fouling Institute of Oceanology Chinese Academy of Sciences School of Mechanical and Electrical Engineering China University of Petroleum(East China) corrosion and Integrity Centre Zhejiang JIULI Hi-Tech Metals Co.Ltd Qingdao Sifang Kawasaki Rollingstock Technology Co. Ltd

The co2corrosion behaviour of X65 carbon steel under water-in-oil droplet and oil-in-water droplet was systematically investigated by a combination of scanning electron microscopy, Raman spectroscopy, NPFLex3D and coMSOL simulation. Under the water-in-oil droplet, the formation of crystalline Feco3can be contributed to the high concentration of Fe2+and co32-, and the short diffusion path near the droplet edge promotes Feco3precipitation. Under the oil-in-water droplet, corrosion islands caused by the invasion of water can be found,indicating that the small water droplets emphasised the development of localized corrosion underneath the oil droplet.

关键词： Carbon steel co 2 corrosion Dispersed droplet Oil/water flow coMSOL

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