Results 1 to 10 of about 32,507 (170)
Zhejiang Daxue xuebao. Lixue ban, 2018 采用第一性原理研究了 Li过量情况下Cr掺杂LiZnAs体系(Li1.1(Zn1-xCrx)As) (x= 0.1)的稳定构型、磁性来源以及电子结构.首先，通过比较不同构型下Cr掺杂LiZnAs稀磁半导体体系得到稳定构型的能量，发现一定的Li过量、Cr掺杂浓度下，当掺杂的Cr原子之间的初始距离一定时，过剩的Li空位之间的距离对其构型稳定性有较大影响；其次，分析了 Cr掺杂LiZnAs的磁性来源，发现其磁性主要来源于Cr原子的3d轨道；最后，研究了 Cr掺杂LiZnAs体系的电子结构 ...
ZHANGYunli(张云丽) +5 more
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Zhejiang Daxue xuebao. Lixue ban, 2007 采用溶胶凝胶法合成了尖晶石型LiMn2O4正极材料，选取钴、铈和镁作为掺杂元素，考察了钴、铈和镁的掺杂对LiMn2O4正极材料的结构和电化学性能的影响.并运用XRD、IR、BET等方法对所合成的材料进行了表征.实验结果表明，掺杂一定量钴、铈和镁后的LiMn2O4正极材料循环寿命优于未经掺杂的LiMn2O4正极材料，循环50次后，3种掺杂后所得的电池材料的容量保持率均达95%以上.其中以掺杂钴的LiCo0.2Mn1.8O4正极材料循环性能最好，首次充放电容量达到105.6 mAh/g，50次循环后 ...
CHENMin(陈敏) +2 more
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Gongye shui chuli, 2021 用硼元素和氮元素分别对碳纳米管进行掺杂，将制备的无金属催化剂活化过一硫酸盐（PMS）用于处理苯酚废水。结果表明，氮掺杂碳纳米管活化PMS对苯酚的降解效果略优于硼掺杂碳纳米管的催化效果。当pH为3~11时，氮掺杂碳纳米管的一级动力学常数大约是硼掺杂碳纳米管的2倍。造成两者催化活性差异的原因与缺陷程度、掺杂形式、催化反应过程以及活性物质的种类有关。
梁丹丹, 李兴发, 王朝旭
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Microcrystallite characters and photocatalytic activity of TiO2 doped with C60(掺C60二氧化钛微晶特性和光催化活性研究)
Zhejiang Daxue xuebao. Lixue ban, 2001 通过热分析、X射线衍射以及光活性测试，分析了不同掺杂量、不同煅烧温度下掺杂C60二氧化钛微晶样品，研究了掺杂对二氧化钛光活性的改善情况.C60掺杂二氧化钛体系中C60的热解温度明显提前，二氧化钛的晶化温度延迟、相变受到抑制且光活性得到一定程度的提高，其微晶参数也有一定规律变化.
JINDa-lai(金达莱) +3 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He +13 more
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Atomically Thin Sn:GaN‐GaN Homojunction for High‐Sensitivity β‐Ray Detection
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Gallium nitride (GaN), a third‐generation wide‐bandgap semiconductor renowned for its superior radiation tolerance, holds promise for advanced β‐ray detection. Herein, a scalable liquid metal‐assisted in situ synthesis method is presented to fabricate Sn‐doped GaN homojunctions via gallium oxide printing followed by ammonolysis, enabling ...
Weiqing Liu +8 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT NiTi shape memory alloys (SMAs) show excellent performance in vibration damping and corrosion resistance. However, due to low hardness and lack of self‐lubrication, they suffer severe friction and wear during service. Although various strategies including doping and heterostructure design have been proposed, the effects are unsatisfactory.
Huwen Ma +13 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of lightweight, high‐attenuation, and broadband carbon‐based electromagnetic wave absorbers is hindered by the intrinsic trade‐off between impedance matching and dielectric dissipation. Herein, we report a facile and scalable synthesis of N‐doped lignin‐derived interconnected porous carbon (Nx‐LIPC) via hydrogen‐bond self ...
Bin‐Peng Zhang +7 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Aqueous zinc‐ion hybrid capacitors (ZICs) bridge the gap between high‐energy batteries and high‐power supercapacitors, yet their performance is fundamentally bottlenecked by the micropore confinement effect in carbon cathodes, which restricts hydrated Zn2+ transport and active site utilization.
Qian Li +12 more
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Gongye shui chuli, 2011 制备了Ag+、Cu2+、Fe3+掺杂及Ag+-Fe3+共掺杂、Cu2+ Fe3+共掺杂的TiO2光催化剂，用其处理粉煤制气工艺的氨氮废水。结果表明：单金属离子掺杂时Fe3+掺杂TiO2的催化活性最高，在紫外光照射4 h、温度30 ℃、通气量为0.25 m3/h 的条件下，Fe3+的最优掺杂量（Fe3+与TiO2的质量比）为0.001%，其氨氮去除率为76.4%。共掺杂的最优组合为Ag+-Fe3+，其中Ag+为0.05%，Fe3+为0.001%，氨氮去除率为78.92%。
孙业涛 +4 more
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