Results 21 to 30 of about 1,167,373 (161)
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Engineering of the catalyst interface and modulation of transition–metal d–band play critical roles in the electrocatalytic hydrogen evolution reaction (HER). Herein, a synthetic strategy is developed to fabricate nitrogen‐doped carbon nanotubes (N–CNTs)–supported Ni3Se4–CeO2 heterojunction catalysts through a facile chemical vapor deposition (
Zhiqiang Sun +10 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2007 采用浸渍法、一般离子交换和络合离子交换制备Zn/HZSM-5催化剂，用于甲烷和丙烷混合气的无氧芳构化研究，其中络合离子交换法制备的催化剂活性最好.在反应温度823 K，空速600 h-1，甲烷/丙烷摩尔比为5：1的条件下，丙烷转化率和芳烃选择性分别达99.93%和80.29%.Zn/HZSM-5上经CH4-C3H8芳构化反应后，表面存在至少两种类型的积碳，分别对应于CHx活性中间体，类石墨碳或石墨碳，前者可用高温H2消除，后者要在O2气氛下才能被消除 ...
XUANDong(宣东) +3 more
doaj +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Cross‐scale assembly of metal (sub) nanoparticles and/or single atoms into millimeter/nanostructured metal monolithic catalysts (Min‐SMCs) is highly appealing for sustainable water cleanup, due to energy‐efficient catalyst recyclability, high infrastructure compatibility, and low metal‐releasing risks.
Jia‐Cheng E. Yang +4 more
wiley +1 more source
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
wiley +1 more source
Shuitu Baochi Xuebao, 2006 主要分析不同森林植被下有机碳的分解动态和土壤碳库各组分大小、周转时间。结果表明：土壤样品培养90天，CO2累计释放量表层大致为1723～5065mg／kg、下层大致为178～642mg／kg。分解速率总的趋势是前期快，后期慢，表层明显大于下层。大小顺序为：冷杉林〉针阔混交林和阔叶林〉针叶林。在不同植被下的表层和下层土壤中，活性碳占总有机碳的0．54％～1．67％，0．45％～5．48％．平均驻留时间为11～56天、60～88天；缓效性碳占总有机碳的23．0％～63．3％，33．2％～72．2 ...
邵月红 +3 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of structurally stable anodes with high capacities and long cycle lives is essential for the development of potassium–ion batteries. Conversion‐type anodes have attracted considerable attention in potassium–ion batteries (PIBs) due to their high theoretical capacities.
Jeong Ho Na +7 more
wiley +1 more source
Shuitu Baochi Xuebao, 2017 为了解土壤有机碳组分在植被恢复过程中的变化规律，选取了红壤区本底条件基本一致、不同恢复年限的马尾松林为研究对象，以未治理的侵蚀裸地（CK1）和恢复后的次生林（CK2）为对照，采用物理化学分组法，将土壤有机碳分为由溶解性有机碳（DOC）和颗粒有机碳(POM)组成的活性碳库、物理保护态的团聚体与粉粒和黏粒组合成的缓效性碳库以及化学结构稳定的惰性碳库。结果表明：在植被恢复过程中（0～30年）活性碳库储量及其分配比例在植被恢复7～10年显著提高(P＜0.05)，并在植被恢复27～30年保持较稳定水平 ...
邓 翠 +6 more
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The electrocatalytic water splitting technique was widely taken for hydrogen evolution, due to its cost‐effectiveness and environmental friendliness. The design of electrode material as electrocatalysts play a key role in achieving high efficiency.
Yaling Zhu +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2017 为探明坡耕地土壤有机碳空间分布特征，对紫色土丘陵区坡耕地不同部位土壤有机碳及活性有机碳顺坡和深度分布进行分析。结果表明，坡耕地上坡土层深度仅为22.3 cm，中坡和下坡土层深度约为上坡的2.01倍和3.30倍；与上坡比较，中坡和下坡土壤容重下降了0.2和0.04，土壤孔隙度增加了19.82%与3.83%。沿坡从上向下土壤有机碳及活性有机碳储量显著增加，下坡土壤有机碳及活性有机碳储量比上坡和中坡分别增加了674.74%，104.09%和958.51%，267.75 ...
樊红柱, 张泽洪, 郭, 蒋
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Metal‐doped carbon‐based nanomaterials (M‐CNM) play a strategically significant role in next‐generation precision antibacterial and antitumor therapies, as they integrate synergistic photothermal ablation, catalytic reactive oxygen species (ROS) generation, and multimodal imaging capabilities. However, their clinical translation is hindered by
Pengxiang Liu +5 more
wiley +1 more source