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学者姓名：李昂
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Abstract ：
AuCu nanoalloys are typical multicompent catalysts that have been widely used because of their highly reduced cost. The oxidation is a highly common reaction mode during catalysis, in which the material morphology, composition, and surface defects can affect the initiation of oxidation and aggravate the oxidation. The effects of the atomic-scale oxidation process on the adsorption, nucleation and growth of the AuCu nanocrystalline films were observed by in situ environmental transmission electron microscopy. The structural impacts of different types of defects on the oxide nucleation process have been revealed, and the preferred oxidation sequence is surface grain boundaries first, then surface zigzag edges, and, finally, the orderly crystal surface. Such a structural oxidation sequence can be attributed to the coordination number of AuCu nanoalloys, with those with large numbers tending to adsorb more oxygen atoms and preferring to nucleate in this region. Nucleation and growth on the newly formed oxide crystal were disordered, resulting in structural order. The oxidation process prompts oxide particle rotation, and this rotation accelerates the combination of particles. An in situ study of the microstructures of a AuCu alloy subjected to oxidation provides key evidence for studying the failure mechanism of the catalytic properties of nanoalloys.
Keyword ：
AuCu alloy AuCu alloy In situ In situ Environmental transmission electron Environmental transmission electron Atomic structure Atomic structure Oxidation Oxidation microscopy microscopy
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| GB/T 7714 | Pei, Xingfei , Wang, Zhanxin , Chen, Yanhui et al. Surface structure-dependent nucleation and rotated sintering of an initially oxidized AuCu nanoalloy [J]. | APPLIED SURFACE SCIENCE , 2025 , 693 . |
| MLA | Pei, Xingfei et al. "Surface structure-dependent nucleation and rotated sintering of an initially oxidized AuCu nanoalloy" . | APPLIED SURFACE SCIENCE 693 (2025) . |
| APA | Pei, Xingfei , Wang, Zhanxin , Chen, Yanhui , Liu, Mingzhe , Lu, Hui , Li, Ang et al. Surface structure-dependent nucleation and rotated sintering of an initially oxidized AuCu nanoalloy . | APPLIED SURFACE SCIENCE , 2025 , 693 . |
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Abstract ：
The investigation of active site evolution and reaction intermediates during the catalytic oxidation process has paramount importance for the development of highly efficient catalysts for soot oxidation. Nevertheless, soot oxidation involves complex gas-solid-solid reaction pathways, and challenges persist in precisely investigating the active sites and intermediates. Herein, single-atom Ag1O5 catalysts with uniform active sites were constructed from Ag nanoparticles assisted by the interplay between the surface defects of Mn2O3 and temperature-induced diffusion. Based on the use of Ag1/Mn2O3 as a model catalyst and in situ environmental electron microscopy results, the soot particles show diffusion behavior toward the Ag1/Mn2O3 catalyst, and the Ag single-atom active sites significantly decrease the required reaction temperature for soot oxidation. Consequently, the oxidation reaction occurs at the active sites of the individual Ag atoms, leading to the formation of AgC intermediates. This research provides critical insights for the design and fabrication of highly efficient and stable catalysts for soot oxidation.
Keyword ：
Atomic dispersion Atomic dispersion In situ TEM In situ TEM Soot oxidation Soot oxidation
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| GB/T 7714 | Lv, Qian , Jin, Baofang , Xu, Hengyue et al. Atomic dispersion of Ag on Mn2O3 for soot catalytic oxidation: Dispersion mechanism and catalytic intermediate identification [J]. | MATERIALS TODAY NANO , 2025 , 29 . |
| MLA | Lv, Qian et al. "Atomic dispersion of Ag on Mn2O3 for soot catalytic oxidation: Dispersion mechanism and catalytic intermediate identification" . | MATERIALS TODAY NANO 29 (2025) . |
| APA | Lv, Qian , Jin, Baofang , Xu, Hengyue , Wu, Xiaodong , Zhang, Ningqiang , Pang, Dawei et al. Atomic dispersion of Ag on Mn2O3 for soot catalytic oxidation: Dispersion mechanism and catalytic intermediate identification . | MATERIALS TODAY NANO , 2025 , 29 . |
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Abstract ：
Supported alloy catalysts have been extensively applied to many significant industrial chemical processes due to the abundant active sites with distinguishable geometry and electron states. However, a detailed in situ investigation of the interaction between support and alloy nanoparticles is still lacking. Here, a subversive 'tearing effect' on the interface of TiO2-supported NiRu alloy nanoparticles is in situ discovered by environmental transmission electron microscopy (ETEM) with a dramatic redispersion process of alloy nanoparticles from similar to 25 nm to 2-3 nm under the repeated hydrogen reduction. Dual-driven by the distinct alloy-support interaction involving the restructuring of alloy nanoparticles and growth of TiOx overlayer, larger NiRu alloy nanoparticles spontaneously disintegrate into atoms migrating on support. Atoms are finally captured by the defects generated on TiO2 during the repeat reduction, which also confines the further growth of the newly alloy nanoparticles. Owing to this specific alloy-support interaction, smaller alloy nanoparticles on TiO2 support are much more stable than the bigger ones, which holds promise for industrial applications as durable catalysts. This novel metal-support interaction with the 'tearing effect' revealed on supported alloy catalysts provides new knowledge on the structure-performance relationships in all the alloy catalysts for hydrogenation reactions.
Keyword ：
metal-support interaction metal-support interaction heterogeneous catalysis heterogeneous catalysis mechanism mechanism alloy alloy redispersion redispersion
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| GB/T 7714 | Zou, Sibei , Cao, Liwei , Zhang, Xingmo et al. 'Tearing Effect' of Alloy-Support Interaction for Alloy Redispersion in NiRu/TiO2 Hydrogenation Catalysts [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (16) . |
| MLA | Zou, Sibei et al. "'Tearing Effect' of Alloy-Support Interaction for Alloy Redispersion in NiRu/TiO2 Hydrogenation Catalysts" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 64 . 16 (2025) . |
| APA | Zou, Sibei , Cao, Liwei , Zhang, Xingmo , Chen, Chaoqi , Tada, Mizuki , Muratsugu, Satoshi et al. 'Tearing Effect' of Alloy-Support Interaction for Alloy Redispersion in NiRu/TiO2 Hydrogenation Catalysts . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (16) . |
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Abstract ：
Grain boundary (GB) plastic deformation is a critical deformation mode that can significantly affect the microstructure and mechanical properties of metals. Given its importance, numerous studies have been conducted over the past few decades to investigate the atomistic mechanism of GB plasticity, which includes GB migration, GB sliding, and grain rotation. These three deformation modes typically occur simultaneously and interact cooperatively. Despite substantial advancements in understanding the atomic-scale mechanisms of GB plasticity, there is a scarcity of review papers addressing the in situ atomic-scale mechanisms of GB plasticity. This work aims to provide a comprehensive overview of the atomistic mechanisms of GB plasticity in metals, detailing modes predicted by theoretical models and molecular dynamics (MD) simulations, as well as discussing mechanisms verified by in situ atomic-scale experiments. Additionally, it examines the factors influencing GB deformation. The authors intend for this review to serve not only as a valuable resource for researchers in the field of nanocrystalline (NC) metals but also as a textbook for educating graduate students.
Keyword ：
atomic-scale atomic-scale deformation mechanism deformation mechanism GB plasticity GB plasticity
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| GB/T 7714 | Zhang, Zihao , Feng, Yuanyuan , Zhang, Xu et al. In Situ Atomic-Scale Experiments Reveal the Atomistic Mechanisms of Grain Boundary Plasticity [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 35 (1) . |
| MLA | Zhang, Zihao et al. "In Situ Atomic-Scale Experiments Reveal the Atomistic Mechanisms of Grain Boundary Plasticity" . | ADVANCED FUNCTIONAL MATERIALS 35 . 1 (2024) . |
| APA | Zhang, Zihao , Feng, Yuanyuan , Zhang, Xu , Yang, Chengpeng , Ma, Yan , Li, Zhipeng et al. In Situ Atomic-Scale Experiments Reveal the Atomistic Mechanisms of Grain Boundary Plasticity . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 35 (1) . |
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Abstract ：
Transition metal dichalcogenide (TMDC) monolayers exhibit enhanced electrical and optoelectrical properties, which are promising for next-generation optoelectronic devices. However, large-scale and uniform growth of TMDC monolayers with large grain size is still a considerable challenge. Presented in this work is a simple and effective approach to fabricating largescale molybdenum (MoS2) disulfide monolayers by chemical vapor deposition (CVD) method. It is found that MoS2 grows from single crystal into thin film with the increase of oxide precursor proportion. The photodetector of large scale monolayer layer MoS2 film is fabricated by depositing metal electrodes on the interdigital electrode mask through using thermal evaporation coating. Finally, the highly stable and repeatable photoelectric responses under the conditions of different voltages and different laser power are characterized under 405-nm laser excitation, with response time decreasing down to the order of milliseconds (ms). In addition, the photodetector achieves a wide spectral detection range from 405 nm to 830 nm, that is, from visible light to near-infrared light wavelength range, with optical response (R) of 291.7 mA/W and optical detection rate (D*) of 1.629x109 Jones. The monolayer MoS2 thin film photodetector demonstrated here has the advantages of low cost, feasibility of large-scale preparation, and good stability and repeatability in the wide spectrum range from visible light to near infrared light wavelength, providing the possibilities for future applications of electronic and optoelectronic devices .
Keyword ：
photoelectric response photoelectric response chemical vapor deposition chemical vapor deposition MoS2 MoS2 photodetector photodetector
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| GB/T 7714 | Peng, Wu , Lun, Tan , Wei, Li et al. Preparation and photoelectric property of large scale monolayer MoS2 [J]. | ACTA PHYSICA SINICA , 2023 , 72 (11) . |
| MLA | Peng, Wu et al. "Preparation and photoelectric property of large scale monolayer MoS2" . | ACTA PHYSICA SINICA 72 . 11 (2023) . |
| APA | Peng, Wu , Lun, Tan , Wei, Li , Li-Wei, Cao , Jun-Bo, Zhao , Yao, Qu et al. Preparation and photoelectric property of large scale monolayer MoS2 . | ACTA PHYSICA SINICA , 2023 , 72 (11) . |
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Abstract ：
The research and development of high-performance NH3 sensors are of great significance for environment monitoring and disease diagnosis applications. Two-dimensional (2D) MoS2 nanomaterials have exhibited great potential for building room-temperature (RT) NH3 sensors but still suffer from relatively low sensitivity. Herein, the TiO2-modified monolayer MoS2 films with controllable TiO2 loading contents are fabricated by a facile approach. A remarkable enhancement in the RT NH3 sensing performance is achieved after the n-n hetero-compositing of the TiO2/MoS2 system. The device with 95% surface coverage of TiO2 shows enhanced sensor response, low detection limit (0.5 ppm), wide detection range (0.5-1000 ppm), good repeatability, and superior selectivity against other gases. In situ Kelvin potential force microscopy results revealed that the TiO2 modification not only improved the surface reactivity of the sensing layers but also contributed to the NH3 sensing performance by serving as the "gas-gating" layers that modulated the electron depletion layer and the conductivity of the MoS2 films. Such an n-n hetero-compositing strategy can provide a simple and cost-effective approach for developing high-performance NH3 sensors based on 2D semiconductors.
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| GB/T 7714 | Tan, Lun , Liu, Xianzhen , Wu, Peng et al. TiO2-modified MoS2 monolayer films enable sensitive NH3 sensing at room temperature [J]. | NANOSCALE , 2023 , 15 (35) : 14514-14522 . |
| MLA | Tan, Lun et al. "TiO2-modified MoS2 monolayer films enable sensitive NH3 sensing at room temperature" . | NANOSCALE 15 . 35 (2023) : 14514-14522 . |
| APA | Tan, Lun , Liu, Xianzhen , Wu, Peng , Cao, Liwei , Li, Wei , Li, Ang et al. TiO2-modified MoS2 monolayer films enable sensitive NH3 sensing at room temperature . | NANOSCALE , 2023 , 15 (35) , 14514-14522 . |
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Abstract ：
一种耐高温硅橡胶材料及其制备方法属于硅橡胶材料技术领域。其特征在于，由以下质量分数组分原料构成：甲基乙烯基生胶100‑130份、白炭黑30‑50份、羟基硅油5‑10份，硫化剂1.5份，原子级分布的金属钨的氧化物的纳米氧化锆1‑10份。在纳米氧化锆上单原子，将其添加到硅橡胶中。在长时间的高温作用下，具有能大幅度维持硅橡胶物理性能的优点，并且操作简单。
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| GB/T 7714 | 王聪 , 李昂 , 韩晓东 . 一种耐高温硅橡胶材料及其制备方法 : CN202211447917.7[P]. | 2022-11-18 . |
| MLA | 王聪 et al. "一种耐高温硅橡胶材料及其制备方法" : CN202211447917.7. | 2022-11-18 . |
| APA | 王聪 , 李昂 , 韩晓东 . 一种耐高温硅橡胶材料及其制备方法 : CN202211447917.7. | 2022-11-18 . |
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Abstract ：
本发明提供一种贵金属衬底的异相化单位点制备方法。在水和或溶剂中，加入具有官能团修饰的均相钨、钼金属配合物的单位点，即金属单原子或金属单一团簇，配体是可以与金属配位的含有氧/硫/氮的化合物分子，即均匀分散在溶剂中的金属氧/硫/氮化物，制成均相络合物溶液。在该溶液中，加入带有表面缺陷的衬底材料后，利用静置冷冻/加热或pH或加电压方式，将均相位点负载在衬底材料表面的缺陷或缝隙处，形成异相化制备。
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| GB/T 7714 | 王聪 , 李昂 , 冯奕博 et al. 一种贵金属衬底的异相化单位点制备方法 : CN202211447913.9[P]. | 2022-11-18 . |
| MLA | 王聪 et al. "一种贵金属衬底的异相化单位点制备方法" : CN202211447913.9. | 2022-11-18 . |
| APA | 王聪 , 李昂 , 冯奕博 , 高钰航 , 韩晓东 . 一种贵金属衬底的异相化单位点制备方法 : CN202211447913.9. | 2022-11-18 . |
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一种城市固废焚烧过程主蒸汽流量实时预测方法，步骤如下：一、对城市固废焚烧过程的历史数据进行预处理，使用基于滑动窗口与相关向量机RVM结合的方法识别并删除其中的异常值，并使用时间连续的数据作为案例库；二、使用基于欧氏距离与协方差作为相似度指标的即时学习方法JITL检索数据样本，得到与待预测时刻相似度最高的n*K个案例；三、使用基于机理分析改进的支持向量机ISVM对检索出的n*K个案例建立模型，并得出目标时刻的主蒸汽流量值，最后将结果与目标时刻工况参数作为一个案例存储到案例库中；四、重复步骤二～三，直至焚烧过程结束，以实现城市固废焚烧过程主蒸汽流量实时预测。本发明使得热能转化状况得到准确检测，提高热能利用率。
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| GB/T 7714 | 严爱军 , 李昂 , 汤健 . 一种城市固废焚烧过程主蒸汽流量实时预测方法 : CN202210612435.6[P]. | 2022-05-31 . |
| MLA | 严爱军 et al. "一种城市固废焚烧过程主蒸汽流量实时预测方法" : CN202210612435.6. | 2022-05-31 . |
| APA | 严爱军 , 李昂 , 汤健 . 一种城市固废焚烧过程主蒸汽流量实时预测方法 : CN202210612435.6. | 2022-05-31 . |
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Abstract ：
在各种气体传感器中,基于金属半导体的气体传感器具有独特的优势.与其他传感器相比,基于金属氧化物半导体的气体传感器既便宜又易于制造,此外,它还具有响应速度快、恢复速度快、灵敏度高等优点,具有很大的应用潜力.常见的金属氧化物材料有ZnO、SnO2、WOx等,其中,氧化钨(WOx)由于其优异的电学和光学性能被广泛应用于传感、催化、电池等领域.本文总结了氧化钨(WOx)的合成和结构,着重概括了化学计量的WO3及亚化学计量的氧化钨(WO3-x,0<x<1)在气体传感器领域的研究现状和进展,并整理了相关气敏传感机理,最后展望了WOx基传感器的发展趋势.
Keyword ：
气敏传感器 气敏传感器 WOx WOx 金属氧化物 金属氧化物 气敏传感机理 气敏传感机理
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| GB/T 7714 | 黄景萍 , 曹立伟 , 李昂 . WOx基气敏材料的研究进展 [J]. | 科技创新导报 , 2022 , 19 (16) : 15-21,118 . |
| MLA | 黄景萍 et al. "WOx基气敏材料的研究进展" . | 科技创新导报 19 . 16 (2022) : 15-21,118 . |
| APA | 黄景萍 , 曹立伟 , 李昂 . WOx基气敏材料的研究进展 . | 科技创新导报 , 2022 , 19 (16) , 15-21,118 . |
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