2023年2月20日 · In this report, we have investigated oxygen-deficient lanthanum (La) doped cerium oxide (CeO2) nanoparticles for their potential applications in spintronics and photocatalysis. XRD measurements indicate lattice expansion …

2024年10月30日 · La-CeO 2 is uniformly distributed on the 3D-rGO framework, and the charge transportation and ion diffusion of the hybrid are facilitated due to excellent conductivity. La doping in CeO 2 increases the content of Ce 3+ and OVs, boosting the adsorption performance of La-CeO 2 /rGO electrode.

2022年4月22日 · La doped CeO 2 nanorods successfully synthesized by hydrothermal method. Specific capacitance 925 F g -1 has been achieved for La 0·05 Ce 0·95 O 2 nanorods. More than 87% cyclic stability was achieved for La 0·05 Ce 0·95 O 2 nanorods. The La 0·05 Ce 0·95 O 2 showed the significantly H 2 production rate (9 μmol h −1 g −1).

2024年9月1日 · By investigating the structural, morphological, and photocatalytic properties of La–CeO 2, we seek to elucidate the mechanisms by which La doping enhances the degradation performance of CeO 2 and to determine the optimal doping concentration for effective dye degradation. This research could potentially contribute to the development of more ...

2024年4月25日 · The prepared La-CeO2-x nanorods exhibit a great improvement in electron–hole pair migration and visible-light response due to the synergistic effect of abundant oxygen vacancies and heterogeneous elements (La). Consequently, La-CeO2-x exhibited excellent visible-light photocatalytic performances and chemical stability for SMR degradation, the ...

2017年12月8日 · La substitution could enhance the oxygen vacancy concentration and reducibility of the supports, promote the migration of the surface oxygen, and thus improve the catalytic activity of CeO 2. Additionally, Ce 0.8 La 0.2 O 2-δ monolithic catalyst exhibited high stability at high temperature.

2023年9月24日 · 拉曼光谱是一种高度灵敏和有效的技术，可以探测到掺杂CeO2颗粒中的晶格排列有序度和氧空位等缺陷的。 对于纯二氧化铈CeO2拉曼光谱在 465 cm−1处有一个强的吸收峰，这归属于CeO2立方萤石结构F2g振动模式。 该F2g振动模式的能量与晶格参数成反比，即随着CeO2纳米颗粒的晶格参数增大，F2g振动的强度逐渐降低。 相比较大的CeO2颗粒，小颗粒 (<10 nm)CeO2的F2g振动峰变的宽且不对称，这种宽化现象归因于动量守恒弛豫的声子约束效应。

这项工作报告了一种通过调节CeO 2 载体的表面氧空位和中等强度碱性位点从而改变反应途径来促进Ni基催化剂上低温CO 2甲烷化的策略。 将La物种引入CeO 2 载体并在600°C下煅烧（CeO 2 -La-600），形成表面具有薄La 2 O 2 CO 3 层的La-Ce-O固溶体，产生更多碱性位点和氧空位。 这种独特的结构有利于CO 2 的吸附和直接解离。 在 Ni/CeO 2 -La-600 上，反应遵循 HCOO* 和 *CO 途径，而在 Ni/CeO 上 2 -600，反应仅通过 HCOO* 途径发生。 在 Ni/CeO 2 -La-600 上，CO …

本研究旨在检测La 掺杂 CeO 2量子点的染料降解效率、抗菌活性和计算机分子对接分析。 使用各种方法检查了 QD 的结构、元素组成、光学特性、d间距和形态特征。

2023年2月20日 · La-CeO2 was proposed as a putative inhibitor of β-lactamaseE. coli and DNA gyraseE. coli relying on the outcomes of a molecular docking analysis that was in improved accord with in vitro...