Results 21 to 30 of about 302,809 (119)
, 2009 本发明属于介孔碳材料，具体涉及一种高比表面积的过渡金属掺杂的介孔碳材料的制备方法。其以过渡金属掺杂的高分子为碳化前驱物，以嵌段聚合物为成孔剂，利用两者在易挥发的溶剂中形成的超分子自组装结构，于固化剂存在下，在一定的温度下固化，形成过渡金属掺杂的高分子介观结构。通过在惰性气氛下焙烧除去成孔剂，可以制备过渡金属掺杂的介孔高分子材料。将制得的过渡金属掺杂的介孔高分子材料在惰性气氛下高温碳化，得到过渡金属掺杂的介孔碳材料 ...
包信和, 王春雷, 马 丁
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Efficient and durable bifunctional electrocatalysts are vital for scalable water electrolysis. Here, we realize cobalt‐vacancy (Covac) engineering in CoFeP supported on N,P‐codoped carbon nanocages (Co1‐vacFeP/NPC) through a simple route comprising a CoFe Prussian blue analog precursor, phosphidation–pyrolysis, tannic‐acid etching, and a ...
Yuan‐Liang Yuan +6 more
wiley +1 more source
, 2008 研究了In掺杂n型ZnO体单晶的化学气相传输法生长和材料性质.利用霍尔效应、X射线光电子能谱、光吸收谱、喇曼散射、阴极荧光谱等手段对晶体的特性和缺陷进行了分析.掺In后容易获得浓度为10~(18)～10~(19)cm~(-3)的n型ZnO单晶,掺入杂质的激活效率很高.随着掺杂浓度的提高,ZnO单晶的带边吸收和电学性质等发生明显的变化.分析了掺In ...
董志远 +4 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Recently, cobalt/nitrogen co‐doped materials have emerged as heterogeneous catalysts to activate peroxymonosulfate (PMS) and have been applied to advanced oxidation processes for environmental remediation. However, their recyclability and reusability remain major barriers to practical application.
Wen‐Kai Zhu +11 more
wiley +1 more source
, 2016 采用固相法制备了镱铝共掺杂氧化锆电解质材料。实验结果表明:Al_2O_3(氧化铝)能促进电解质的烧结并提高电解质的抗弯强度。Al_2O_3对电导率的影响与Yb_2O_3(氧化镱)的掺杂量有关,仅当Yb_2O_3掺杂量为6%(摩尔分数)时,Al_2O_3掺杂有利于氧离子电导率。6%(摩尔分数)Yb_2O_3和0.5%(摩尔分数)Al_2O_3共掺杂的氧化锆电解质具有优异的抗弯强度和最高的氧离子电导率,以其作为支撑体的电池在800℃的功率密度为0.40W/cm ...
郭存心 +4 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Emerging as attractive alternatives for sustainable, low‐cost, and high‐performance electromagnetic interference (EMI) shielding, biomass‐derived carbon is nonetheless constrained by a limited repertoire of shielding mechanisms. Herein, a straightforward method was employed to synthesize self‐supporting Co nanoparticles embedded in porous N ...
Yingjie Xu +6 more
wiley +1 more source
掺杂SnO2 纳米粉体的水热制备及其表面物理化学研究 [PDF]
, 2007 二氧化锡（SnO2）纳米结构已经在气敏传感器应用中展示了巨大的应用潜力。 探索SnO2 纳米结构的可控制备方法，阐明元素掺杂对其表面物理化学特性、灵敏度、选择性和热稳定性等的影响规律，将有助于获得更高性能的气敏传感材料。 本论文采用非模板水热法可控制备了纯相和掺杂SnO2 纳米结构，综合运用多种 现代分析方法研究了其微观结构、表面特性和热稳定性，采用传统烧结型传感器结构研究了其气敏性能。论文主要研究成果如下： 1．采用SnCl2 和NaOH 为主要原料通过水热法改变不同溶剂在温和条件下实现 ...
李月
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT This study elucidates the oxidation mechanisms governing Y/Hf‐doped AlCoCrFeNiTi high‐entropy alloys (HEAs) and reveals the pivotal role of fabrication processes in dictating high‐temperature oxidation behavior. We demonstrate that casting and spark plasma sintering (SPS) promote Y/Hf segregation, resulting in heterogeneous oxide formation and
Huaqing Yi +5 more
wiley +1 more source
一种共掺杂的硅基杂质中间带材料的制备方法,包括如下步骤：步骤1：取一硅片；步骤2：在硅片中注入Al；步骤3：将过渡性金属元素注入到含Al的硅片中；步骤4：将含有Al和过渡性金属元素的硅片进行退火处理 ...
左玉华 +5 more
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, 2004 通过溶胶凝胶法制备了以不同方式和不同浓度掺Mo的TiO2薄膜。通过X射线衍射(XRD)、UV—VIS透射光谱、电化学阻抗谱分析了Mo对TiO2薄膜晶粒结构、光吸收性能、阻抗的影响。甲基橙光催化降解实验表明，钼的最佳掺杂方式为在薄膜底层掺杂，在表层及体相掺杂的效果均比未掺杂的TiO2差；其中以Mo的摩尔分数为1．0％、在薄膜底层掺杂时TiO2薄膜的光催化活性最佳 ...
陈俊涛 +4 more
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