Results 11 to 20 of about 76 (44)
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
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
文章采用密度泛函理论(DFT),研究了一个、两个Fe2O3分子在单壁碳纳米管(9,0),(10,0)和(14,0)内部的稳定结构和电子性质,获得了随着单壁碳纳米管直径的增加,结合能逐渐增大,而带隙却减小.且由于Fe2O3分子填充单壁碳纳米管内后两者之间发生了相互作用,使得电荷从单壁碳纳米管转移到了Fe2O3分子;与放入一个Fe2O3分子的单壁碳纳米管相比,放入两个Fe2O3分子时,分子和碳纳米管结合能更大,结构更稳定.
赵妮妮, 张红, 程新路
doaj
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
ABSTRACT In recent years, materials capable of achieving efficient electromagnetic wave (EMW) absorption over a broad frequency range have attracted widespread attention. Such materials are not only significant in mitigating electromagnetic interference and pollution caused by the extensive use of electronic devices but also demonstrate outstanding ...
Maoxia Lu +7 more
wiley +1 more source
ABSTRACT Diabetic wound infections are a common complication of diabetes, which severely impact patients' quality of life. Effective treatment of diabetic wound infections remains one major challenge in the clinic, partially due to the formation of bacterial biofilm and antibiotic resistance.
Liang Zhou +8 more
wiley +1 more source
ABSTRACT Metal oxide‐based catalysts for oxygen reduction reaction (ORR) have drawn great attention in recent years. However, it remains technically challenging for the precise regulation of the overall performance due to the trade‐off effect among the activity, selectivity, and stability of electrocatalysts. Herein, a balancing strategy to control the
Haoran Ma +7 more
wiley +1 more source
由于羧基化碳纳米管孔径结构和表面性质在制备过程中具有广泛的可调控性,通过聚乙烯亚胺(PEI)对其进行化学改性和表面修饰。系统地研究了改性碳纳米管(PEI-CNT/COOH)与污染物吸附特性之间的关系。实验证实PEI-CNT/COOH对甲基橙的吸附符合假二阶方程与Langmuir等温吸附模型。通过研究热力学参数证实PEI-CNT/COOH对甲基橙的吸附是一个自发放热过程。25℃下,PEI-CNT/COOH对甲基橙的吸附量为1 218.8 mg/g,远远高于未改性CNT/COOH对甲基橙的吸附量(466.6
张娈娈 +6 more
doaj +2 more sources
基于π轨道紧束缚模型,并考虑曲率效应的影响,解析地推导了金属(即扶手椅型)碳纳米管的局域化长度.发现,考虑曲率效应后,扶手椅型碳纳米管的局域化长度变长;还发现,曲率效应对扶手椅型碳纳米管局域化长度的影响随碳纳米管的半径的增加而迅速减小.
韩梅, 张勇, 黄成平
doaj
Melting Preparation for Tungsten‐Doped Graphene/Copper Composites
ABSTRACT Melting production plays a pivotal role in the modern copper industry. However, applying this process to fabricate nanocarbon (e.g., graphene, carbon nanotubes)‐reinforced copper matrix composites has remained a long‐standing challenge for nearly 2 decades.
Yunzhong Wu +9 more
wiley +1 more source

