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Journal of Semiconductors 2024年第7期45卷 40-44页

作者： Yuting Chen Xinlv Duan Xueli Ma Peng Yuan Zhengying Jiao Yongqing Shen Liguo Chai Qingjie Luan Jinjuan Xiang Di Geng Guilei Wang Chao Zhao Beijing Superstring Academy of Memory technology Beijing 100176China State Key Laboratory of Fabrication Technologies for Integrated Circuits Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China

In-Ga-zn-O(IGZO) channel based thin-film transistors(TFT), which exhibit high on-off current ratio and relatively high mobility, has been widely researched due to its back end of line(BEOL)-compatible potential for the next generation dynamic random access memory(DRAM) application. In this work, thermal atomic layer deposition(TALD) indium gallium zinc oxide(IGZO) technology was explored. It was found that the atomic composition and the physical properties of the IGZO films can be modulated by changing the sub-cycles number during atomic layer deposition(ALD) process. In addition, thin-film transistors(TFTs) with vertical channel-all-around(CAA) structure were realized to explore the influence of different IGZO films as channel layers on the performance of transistors. Our research demonstrates that TALD is crucial for high density integration technology, and the proposed vertical IGZO CAA-TFT provides a feasible path to break through the technical problems for the continuous scale of electronic equipment.

关键词： In-Ga-zn-O(IGZO) thermal atomic layer deposition vertical channel thin-film transistor

A high-performance electrocatalyst for oxygen reduction derived from copolymer-anchored polyoxometalates

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Nano Research 2024年第6期17卷 5197-5205页

作者： Yue Du Wenxue Chen Zhiyi Zhong Zhixian Shi Yulin Zhang Xuanning Chen Yisi Liu Dongbin Xiong Lina Zhou Zhenhui Liu Mingbo Zheng Hubei Key Laboratory of Photoelectric Materials and Devices&College of Material Science and Engineering Hubei Normal UniversityHuangshi 435002China College of Materials Science and technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China

The development and synthesis of cathode electrocatalysts with high activity and durable stability for metal-air batteries is an important challenge in the area of ***,we introduce a novel in-situ nitriding and phosphating strategy for producing W_(3)N_(4)and WP from phosphotungstic acid(HPW)-polyaniline-phytic acid-Fe3+organic-inorganic hybrid *** final material has a three-dimensional porous framework with W_(3)N_(4)-WP heterostructures embedded in the carbon matrix(W_(3)N_(4)-WP@NPC).As-made materials exhibit exceptional electrocatalytic performance for the oxygen reduction reaction(ORR),with a diffusion-limiting current density of 6.9 mA·cm^(−2)and a half-wave potential of 0.82 *** a zn-air primary cathode,the W_(3)N_(4)-WP@NPC assembled battery can provide a relatively high peak power density(194.2 mW·cm^(−2)).As a zn-air secondary air-cathode,it has great cycling stability over 500 *** work provides a simple and efficient method for rationally designing high-performance air cathodes from copolymer-anchored polyoxometalates.

关键词： W_(3)N_(4)-WP heterojunctions copolymer-anchored polyoxometalates oxygen reduction reaction zn-air battery

Stabilizing zinc anode using zeolite imidazole framework functionalized separator for durable aqueous zinc-ion batteries

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Journal of Energy Chemistry 2024年第3期90卷 23-31,I0003页

作者： Weisong Zhang Xinyan Zhu Ling Kang Ziyu Peng Jing Zhu Liang Pan Lei Dai Shude Liu Ling Wang Yongguang Liu Zhangxing He School of Chemical Engineering North China University of Science and TechnologyTangshan 063009HebeiChina Shanghai Key Laboratory of Multidimensional Information Processing East China Normal UniversityShanghai 201620China College of Textiles Donghua UniversityShanghai 201620China

Aqueous zinc-ion batteries(AZIBs) hold great promise as a viable alternative to lithium-ion batteries owing to their high energy density and environmental ***,AZIBs are consistently plagued by the formation of zinc dendrites and concurrent side reactions,which significantly diminish their overall service life,In this study,the glass fiber separator(GF) is modified using zeolite imidazole salt framework-8(ZIF-8),enabling the development of efficient ***-8,which is abundant in nitrogen content,efficiently regulates the desolvation of [zn(H_(2)O)_(6)]^(2+) to inhibit hydrogen ***,it possesses abundant nanochannels that facilitate the uniform deposition of zn~(2+) via a localized action,thereby hindering the formation of *** insulating properties of ZIF-8 help prevent zn^(2+) and water from trapping electron reduction at the layer surface,which reduces corrosion of the zinc ***,ZIF-8-GF achieves the even transport of zn^(2+) and regulates the homogeneous deposition along the zn(002) crystal surface,thus significantly enhancing the electrochemical performance of the AZIBs,In particular,the zn|zn symmetric cell with the ZIF-8-GF separator delivers a stable cycle life at0.5 mA cm^(-2) of 2300 *** zn|ZIF-8-GF|MnO_(2) cell exhibits reduced voltage polarization while maintaining a capacity retention rate(93.4%) after 1200 cycles at 1.2 A g^(-1) The unique design of the modified diaphragm provides a new approach to realizing high-performance AZIBs.

关键词： Aqueous zinc-ion batteries Separators modifications ZIF-8 zn deposition Dendrite-free

基于富缺陷超细电催化剂的500 mW cm-2水下zn-H2O2电池（英文）

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Science China Materials 2024年第9期67卷 2908-2914页

作者：周猛符奎邢沂海刘建灵孟凡成魏香凤刘节华 Future Energy Laboratory School of Materials Science and EngineeringHefei University of Technology Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Engineering Research Center of High-Performance Copper Alloy Materials and Processing Ministry of Education

水系金属-H2O2电池作为新兴的动力电池,因其理论能量密度大,在各种应用领域受到关注,特别是水下环境.然而,由于金属的自腐蚀现象,大多数基于Mg/Al或其合金的金属-H2O2电池的峰值功率密度小于300 mW cm-2.本文报道了一种基于多功能单细... 详细信息

水系金属-H2O2电池作为新兴的动力电池,因其理论能量密度大,在各种应用领域受到关注,特别是水下环境.然而,由于金属的自腐蚀现象,大多数基于Mg/Al或其合金的金属-H2O2电池的峰值功率密度小于300 mW cm-2.本文报道了一种基于多功能单细胞链生物质合成超细豆荚状znCo/N掺杂电催化剂的方法,并成功应用于高功率zn-H2O2电池.电催化剂在皱褶界面上提供了丰富的催化活性位点,并且,由于采用的根状碳纳米管阵列,缩短了电子/离子转移路径.因此,优化后的电催化剂表现出优异的ORR活性,具有较高的E1/2（0.90 V）和Eonset（1.01 V）值.更重要的是,zn-H2O2电池实现了创纪录的510mWcm-2的最大功率密度和953 Wh kg-1的高比能密度.

关键词： electrocatalyst biomass oxygen reduction reaction zn-air cell zn-H2O2 battery

Illuminating spin-crossover octanuclear metal-organic cages

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Science China Chemistry 2024年第4期67卷 1208-1215页

作者： Zhi-Kun Liu Alyona A.Starikova Yu-Xia Li Ke Sun Meng Yu Zi-Shuo Yao Jun Tao Key Laboratory of Cluster Science of Ministry of Education School of Chemistry and Chemical EngineeringLiangxiang CampusBeijing Institute of TechnologyBeijing 102488China Institute of Physical and Organic Chemistry Southern Federal UniversityRostov-on-Don 344090Russia

Spin-crossover(SCO)materials that reversibly switch between high-and low-spin states have potential for the storage of spin state-relative information,and have gained much attention incorporating secondary physical properties,such as fluorescence and magneto-optical *** this study,we synthesized three octanuclear metal-organic cages(MOCs)using tetraphenylethylene-based luminophores,aldehydes,and Fe^(Ⅱ)salts,by subcomponent self-assembly approach,namely[Fe1]-[Fe3].By controlling the ligand-field strength and guest encapsulation,we finely tuned their SCO *** them,MOC[Fe2]displayed nearly complete SCO behavior in the solid state,which is rare for high-nuclearity *** also demonstrated the coupling of SCO with fluorescence emission in these MOCs by using isostructural zn^(Ⅱ)complexes([zn1]-[zn3])as control experiments,for the first *** calculations revealed the energy-transfer mechanism between fluorophores and SCOactive centers,which emphasizes the significant contribution of d-d transitions in the interplay between the occurrence of SCO and fluorescence emission.

关键词： metal-organic cages spin crossover fluorescence switching materials DFT calculation

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Design to enhance sensing performance of ZIF-8 crystals

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Progress in Natural Science:Materials International 2024年第2期34卷 240-250页

作者： Ya-Ru Li Xiuxiu Dong Shu-Yi Pan Lin Luo Hong-Tao Lei Zhen-Lin Xu Guangdong Provincial Key Laboratory of Food Quality and Safety College of Food Science South China Agricultural University Key Laboratory of Modern Agricultural Equipment and technology (Jiangsu University) Ministry of Education School of Agricultural Engineering Jiangsu University

Metal-organic frameworks（MOFs） are a large class of crystalline porous materials that composed of organic ligands and metal ions,of which zeolitic imidazolate frameworks（ZIFs） are a broad *** most wellknown ZIF-like material is ZIF-8 crystals,which have been the subject of extensive research for ***-8 crystals have been synthesized under various conditions for application in the fields of sensing,drug delivery,and *** paper provides a brief introduction to the preparation methods,formation processes,and formation mechanisms of ZIF-8 crystals in different media,and then explains the effects of different precursor conditions(type of zn2+,ratio of raw materials,and type of solvent) on ZIF-8 crystals in terms of formation ***,current reports on the application of ZIF-8-based chemiresistive gas sensors,electrochemical,fluorescent and colorimetric sensors are also ***,ZIF-8 crystals with good catalytic properties will be obtained based on rational design for promoting the application in different fields of the sensors.

关键词： Formation mechanism Regulation Sensing performance Synthesis method ZIF-8

Arsenic removal from acidic industrial wastewater by ultrasonic activated phosphorus pentasulfide

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中国化学工程学报:英文版 2023年第8期60卷 46-52页

作者： Bo Yu Guang Fu Xinpei Li Libo Zhang Jing Li Hongtao Qu Dongbin Wang Qingfeng Dong Mengmeng Zhang Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China Kunming Key Laboratory of Special Metallurgy Kunming University of Science and TechnologyKunming 650093China Key Laboratory of Unconventional Metallurgy Ministry of EducationKunming 650093China Yunnan Chihong zn&Ge Co. LtdQujing 655011China

Arsenic is one of the main harmful elements in industrial *** to remove arsenic has always been one of the research hotspots in academic *** the process of arsenic removal by traditional sulfuration,the use of traditional sulfurizing agent will introduce new metal cations,which will affect the recycling of *** this study,phosphorus pentasulfide (P_(2)S_(5)) was used as sulfurizing agent,which hydrolyzed to produce H_(3)PO_(4) and H_(2)S without introducing new metal *** effect of ultrasound on arsenic removal by P_(2)S_(5) was *** the action of ultrasound,the utilization of P_(2)S_(5) was improved and the reaction time was *** effects of S/As molar ratio and reaction time on arsenic removal rate were investigated under ultrasonic *** enhanced heat and mass transfer so that the arsenic removal rate of 94.5%could be achieved under the conditions of S/As molar ratio of 2.1:1 and reaction time of 20 *** the first 60 min,under the same S/As molar ratio and reaction time,the ultrasonic hydrolysis efficiency of P_(2)S_(5) was *** is because P_(2)S_(5) forms ([(P_(2)S_(4))])^(2+)under the ultrasonic action,and the structure is damaged,which is easier to be *** addition,the precipitation after arsenic removal was characterized and analyzed by X-ray diffraction,scanning electron microscope-energy dispersive spectrometer,X-ray fluorescence spectrometer and X-ray photoelectron *** research avoids the introduction of metal cations in the arsenic removal process,and shortens the reaction time.

关键词： Arsenic removal Mass transfer Precipitation Waste water Ultrasound

Photoconductivity and Thermoluminescence of SrAl2O4∶Eu,Dy-A Study of Persistent Phosphors with Delocalization Processes with Prof. YEN

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发光学报 2008年第4期29卷 633-640页

作者： H B Yuan zn technology Inc. Brea CA 92821 USA

1 IntroductionA wide range of luminescent materials havebeen studied by optical spectroscopy *** *** has made tremendous contri-bution to this research *** of his interests inthe recent years was in delocalization pro... 详细信息

关键词：光电导性热发光光学研究无机发光材料

锌基镀层热成形钢裂纹的产生、扩展机理及高温力学性能研究

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Journal of Central South University 2024年第2期31卷 399-415页

作者：李学涛朱国森马闻宇邵蓉张永强郑学斌 Research Institute of technology of Shougang Group Co. Ltd.Beijing 100043China Beijing Key Laboratory of Green Recycling Process for Iron&Steel Production technology Beijing 100043China Beijing Engineering Research Centre of Energy Steel Beijing 100043China

本文通过锌基镀层热成形钢的Gleeble试验和实际零件热冲压试验,在材料高温性能分析的基础上,建立了材料模型,用于高精度地拟合真应力和真应变之间的关系,进而研究成形温度、铁素体形成和弯曲变形对液态锌致基板脆裂(LMIE)的影响。结果表... 详细信息

本文通过锌基镀层热成形钢的Gleeble试验和实际零件热冲压试验,在材料高温性能分析的基础上,建立了材料模型,用于高精度地拟合真应力和真应变之间的关系,进而研究成形温度、铁素体形成和弯曲变形对液态锌致基板脆裂(LMIE)的影响。结果表明,真应力随着变形温度的下降而增加。当变形温度为820℃时,LMIE导致真应变较低,约为0.13。根据Gleeble热模拟测试和实际零件试验结果,建议成形温度为720℃,可以避免LMIE并保证材料的力学性能。在实际应用中,拉应力容易导致微裂纹的产生,而压应力可以抑制微裂纹的产生。随着成形温度的降低,镀层中微裂纹的数量和宽度降低,同时镀层厚度增加。镀层主要为固态α-Fe(zn)相。通过减少在加热保温和成形过程中的液态相可以减少甚至避免LMIE裂纹的产生。

关键词：热成形钢锌基镀层断裂直接热冲压微观组织

高度灵活可控的多孔MOF膜用于高效药物释放

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Science China Materials 2024年第5期67卷 1509-1520页

作者：李家馨鄢亚超房庆霖陈颖芝景启航 Hiang Kwee Lee 王鲁宁 School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083China Shunde Graduate School of University of Science and technology Beijing FoshanGuangdong528399China School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological University21 Nanyang LinkSingapore637371Singapore

具有生物力学和生化活性的敷料在伤口护理和皮肤组织再生中起着至关重要的作用.然而,机械失配和药物释放管理所涉及的问题限制了当前敷料的有效使用.在本工作中,我们报道了一种简单的策略,即采用聚偏二氟乙烯(PVDF)作为底物,通过嵌入不... 详细信息

具有生物力学和生化活性的敷料在伤口护理和皮肤组织再生中起着至关重要的作用.然而,机械失配和药物释放管理所涉及的问题限制了当前敷料的有效使用.在本工作中,我们报道了一种简单的策略,即采用聚偏二氟乙烯(PVDF)作为底物,通过嵌入不同尺寸的沸石咪唑酸盐框架(ZIF-8)种子,以推动具有均匀蜂窝结构的高柔性金属有机框架(MOF)复合膜的受控生长,用于药物负载和释放.以嵌入的种子为控制中心,形成的多孔膜具有约0.7-3μm的宽孔隙.这种可调节的微尺度孔与ZIF-8中的固有纳米孔不仅可以有效地提高抗炎类药物的负载(姜黄素,CCM),而且还能够快速并可控地释放药物,大大提高了抗菌活性,同时促进细胞生长.其中,在40 nm种子上生长的0.7μm多孔膜的表现优于其他蜂窝膜,与2μm多孔膜(相当于裸PVDF基质)相比,细胞增殖能力提高了约2倍,针对金黄色葡萄球菌(***)和大肠杆菌(***)的抗菌活性分别提高了5倍和2.4倍,是基底抗菌活性的5倍,这是因为这种最佳孔几何结构具有CCM和zn2+释放特性的平衡效应.这种可控分层孔阵列膜的独特性质有望真正用于伤口愈合,同时也为生物医学设计提供了新的指导.

关键词： MOF membrane hierarchical pores controllable drug release cytocompatibility