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Recent progress on nanostructure-based broadband absorbers and their solar energy thermal utilization

Tong Zhang, Shan-Jiang Wang, Xiao-Yang Zhang, Ming Fu, Yi Yang, Wen Chen, Dan Su

《化学科学与工程前沿（英文）》 2021年 第15卷 第1期   页码 35-48 doi: 10.1007/s11705-020-1937-6

摘要： Nanostructure-based broadband absorbers are prominently attractive in various research fields such as nanomaterials, nanofabrication, nanophotonics and energy utilization. A highly efficient light absorption in wider wavelength ranges makes such absorbers useful in many solar energy harvesting applications. In this review, we present recent advances of broadband absorbers which absorb light by nanostructures. We start from the mechanism and design strategies of broadband absorbers based on different materials such as carbon-based, plasmonic or dielectric materials and then reviewed recent progress of solar energy thermal utilization dependent on the superior photo-heat conversion capacity of broadband absorbers which may significantly influence the future development of solar energy utilization, seawater purification and photoelectronic device design.

关键词： nanostructured broadband absorbers     solar energy harvesting     thermal utilization    

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高性能纳米贝氏体轴承用钢发展与展望 Review

张福成, 杨志南

《工程（英文）》 2019年 第5卷 第2期   页码 319-328 doi: 10.1016/j.eng.2018.11.024

摘要：

轴承是几乎所有机械设备中最关键的零部件，能确保设备平稳运行，这对于高端装备尤为重要，如高速铁路客车和盾构机械等。随着技术的快速发展，对轴承质量的要求不断提高。轴承的制造水平直接反映一个国家钢铁冶金以及机械制造的水平。轴承钢的性能是决定轴承质量的关键因素。因此，开发更优异性能的轴承钢是材料研究领域与机械制造行业所共同追求的目标。国内外著名的轴承制造企业竞相开发新型轴承用钢。纳米贝氏体轴承钢是一类新开发的轴承钢，不仅具有高的强韧性，同时也表现出优异的耐磨性与抗滚动接触疲劳性能。近年来，中国学者在纳米贝氏体轴承钢方面的研究成果显著推动了这一领域的发展。在中国，纳米贝氏体轴承钢最先被用来制造大功率风电主轴轴承及其他重载轴承，表现出了优异的性能。因此，纳米贝氏体轴承钢和相关热处理技术首次被纳入国家标准和行业标准中。轴承行业认为纳米贝氏体轴承钢的开发具有划时代的意义，并称这种轴承为“第二代贝氏体轴承”。本文详细综述了纳米贝氏体轴承钢的发展，包括其优点和不足，并提出了下一步的研究方向。

关键词： 轴承钢     纳米贝氏体     发展     应用     展望    

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Thermal radiative properties of metamaterials and other nanostructured materials: A review

Ceji FU, Zhuomin M. ZHANG

《能源前沿（英文）》 2009年 第3卷 第1期   页码 11-26 doi: 10.1007/s11708-009-0009-x

摘要： The ability to manufacture, control, and manipulate structures at extremely small scales is the hallmark of modern technologies, including microelectronics, MEMS/NEMS, and nano-biotechnology. Along with the advancement of microfabrication technology, more and more investigations have been performed in recent years to understand the influence of microstructures on radiative properties. The key to the enhancement of performance is through the modification of the reflection and transmission properties of electromagnetic waves and thermal emission spectra using one-, two-, or three-dimensional micro/nanostructures. This review focuses on recent developments in metamaterials–manmade materials with exotic optical properties, and other nanostructured materials, such as gratings and photonic crystals, for application in radiative energy transfer and energy conversion systems.

关键词： metamaterial     nanostructured material     thermal radiative property     radiative energy transfer    

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Leidenfrost drops on micro/nanostructured surfaces

Vishal TALARI, Prakhar BEHAR, Yi LU, Evan HARYADI, Dong LIU

《能源前沿（英文）》 2018年 第12卷 第1期   页码 22-42 doi: 10.1007/s11708-018-0541-7

摘要： In the Leidenfrost state, the liquid drop is levitated above a hot solid surface by a vapor layer generated via evaporation from the drop. The vapor layer thermally insulates the drop from the heating surface, causing deteriorated heat transfer in a myriad of important engineering applications. Thus, it is highly desirable to suppress the Leidenfrost effect and elevate the Leidenfrost temperature. This paper presents a comprehensive review of recent literature concerning the Leidenfrost drops on micro/nanostructured surfaces with an emphasis on the enhancement of the Leidenfrost temperature. The basic physical processes of the Leidenfrost effect and the key characteristics of the Leidenfrost drops were first introduced. Then, the major findings of the influence of various micro/nanoscale surface structures on the Leidenfrost temperature were presented in detail, and the underlying enhancement mechanism for each specific surface topology was also discussed. It was concluded that multiscale hierarchical surfaces hold the best promise to significantly boost the Leidenfrost temperature by combining the advantages of both micro- and nanoscale structures.

关键词： Leidenfrost drop     Leidenfrost temperature     heat transfer enhancement     micro/nanostructured surfaces    

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Preface to special issue on “Engineering Nanostructured Materials for Advanced Energy and Environmental

《化学科学与工程前沿（英文）》 2023年 第17卷 第11期   页码 1621-1622 doi: 10.1007/s11705-023-2365-1

摘要： Preface to special issue on “Engineering Nanostructured Materials for Advanced Energy and Environmental Catalysis”
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New nanostructured sorbents for desulfurization of natural gas

Lifeng WANG, Ralph T. YANG

《化学科学与工程前沿（英文）》 2014年 第8卷 第1期   页码 8-19 doi: 10.1007/s11705-014-1411-4

摘要： Desulfurization of natural gas is achieved commercially by absorption with liquid amine solutions. Adsorption technology could potentially replace the solvent extraction process, particularly for the emerging shale gas wells with production rates that are generally lower than that from the large conventional reservoirs, if a superior adsorbent (sorbent) is developed. In this review, we focus our discussion on three types of sorbents: metal-oxide based sorbents, Cu/Ag-based and other commercial sorbents, and amine-grafted silicas. The advantages and disadvantages of each type are analyzed. Possible approaches for future developments to further improve these sorbents are suggested, particularly for the most promising amine-grafted silicas.

关键词： desulfurization     natural gas desulfurization     hydrogen sulfide sorbent     amine-silica sorbent    

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Structural engineering of transition metal-based nanostructured electrocatalysts for efficient water

Yueqing Wang, Jintao Zhang

《化学科学与工程前沿（英文）》 2018年 第12卷 第4期   页码 838-854 doi: 10.1007/s11705-018-1746-3

摘要： Water splitting is a highly promising approach for the generation of sustainable, clean hydrogen energy. Tremendous efforts have been devoted to exploring highly efficient and abundant metal oxide electrocatalysts for oxygen evolution and hydrogen evolution reactions to lower the energy consumption in water splitting. In this review, we summarize the recent advances on the development of metal oxide electrocatalysts with special emphasis on the structural engineering of nanostructures from particle size, composition, crystalline facet, hybrid structure as well as the conductive supports. The special strategies relay on the transformation from the metal organic framework and ion exchange reactions for the preparation of novel metal oxide nanostructures with boosting the catalytic activities are also discussed. The fascinating methods would pave the way for rational design of advanced electrocatalysts for efficient water splitting.

关键词： water splitting     structure engineering     metal organic framework     ion exchange     synergistic effect     hybrid structure     conductive supports    

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Modeling nanostructured catalyst layer in PEMFC and catalyst utilization

Jiejing ZHANG, Pengzhen CAO, Li XU, Yuxin WANG

《化学科学与工程前沿（英文）》 2011年 第5卷 第3期   页码 297-302 doi: 10.1007/s11705-011-1201-1

摘要： A lattice model of the nanoscaled catalyst layer structure in proton exchange membrane fuel cells (PEMFC) was established by Monte Carlo method. The model takes into account all the four components in a typical PEMFC catalyst layer: platinum (Pt), carbon, ionomer and pore. The elemental voxels in the lattice were set fine enough so that each average sized Pt particulate in Pt/C catalyst can be represented. Catalyst utilization in the modeled catalyst layer was calculated by counting up the number of facets of Pt voxels where “three phase contact” are met. The effects of some factors, including porosity, ionomer content, Pt/C particle size and Pt weight percentage in the Pt/C catalyst, on catalyst utilization were investigated and discussed.

关键词： catalyst layer     PEM fuel cell     lattice model     Monte Carlo method     catalyst utilization    

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Design and analysis of Salisbury screens and Jaumann absorbers for solar radiation absorption

Xing FANG, C. Y. ZHAO, Hua BAO

《能源前沿（英文）》 2018年 第12卷 第1期   页码 158-168 doi: 10.1007/s11708-018-0542-6

摘要： Two types of resonance absorbers, i.e., Salisbury screens and Jaumann absorbers are systematically investigated in solar radiation absorption. Salisbury screen is a metal-dielectric-metal structure which overcomes the drawback of bulky thickness for solar spectrum. Such structures have a good spectral selective absorption property, which is also insensitive to incident angles and polarizations. To further broaden absorption bandwidth, more metal and dielectric films are taken in the structure to form Jaumann absorbers. To design optimized structural parameters, the admittance matching equations have been derived in this paper to give good initial structures, which are valuable for the following optimization. Moreover, the analysis of admittance loci has been conducted to directly show the effect of each layer on the spectral absorptivity, and then the effect of thin films is well understood. Since the fabrication of these layered absorbers is much easier than that of other nanostructured absorbers, Salisbury screen and Jaumann absorbers have a great potential in large-area applications.

关键词： thin films     admittance loci     solar absorber    

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航空移动通信——窄带至宽带的演进

张军

《工程（英文）》 2021年 第7卷 第4期   页码 431-434 doi: 10.1016/j.eng.2021.02.002

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一种作为主动控制宽带吸波器的热可调超材料 Article

邢校菖, 曹阳, 田小永, 吴玲玲

《工程（英文）》 2023年 第20卷 第1期   页码 143-152 doi: 10.1016/j.eng.2022.04.028

摘要：

近年来，超材料因其操纵电磁波的强大能力而受到越来越多的关注。然而，大多数先前报道的超材料无法动态调控超宽波段电磁波。在本文中，我们提出了一种使用具有不同相变温度的石蜡基复合材料（PDCs）来实现热可调谐宽带吸波的超材料结构体（T-TBM）。通过在不同相变温度下控制PD-Cs 的固液态，实现了从低频到高频的T-TBM反射损耗峰值的动态调控。T-TBM可以改变吸收峰值带宽（反射损耗值小于−30 dB），并且通过调整T-TBM 的温度依然满足宽带吸波（反射损耗值小于−10 dB）。实验结果表明，T-TBM中PD-Cs的相变恒温效应为在不同热条件下主动控制电磁波吸收响应提供了时间窗口。该器件在电磁吸收、智能超材料、多功能结构器件等领域具有广阔的应用前景。

关键词： 超材料     主动控制     热可调     宽带吸波    

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Structural and optical properties of nanostructured copper sulfide semiconductor synthesized in an industrial

Marcela Achimovičová, Erika Dutková, Erika Tóthová, Zdenka Bujňáková, Jaroslav Briančin, Satoshi Kitazono

《化学科学与工程前沿（英文）》 2019年 第13卷 第1期   页码 164-170 doi: 10.1007/s11705-018-1755-2

摘要：

Chalcogenide nanostructured semiconductor, copper sulfide (CuS) was prepared from copper and sulfur powders in stoichiometric ratio by a simple, fast, and convenient one-step mechanochemical synthesis after 40 min of milling in an industrial eccentric vibratory mill. The kinetics of the mechanochemical synthesis and the influence of the physical properties of two Cu powder precursor types on the kinetics were studied. The crystal structure, physical properties, and morphology of the product were characterized by X-ray diffraction (XRD), the specific surface area measurements, particle size distribution and scanning electron microscopy. The XRD analysis confirmed the hexagonal crystal structure of the product-CuS (covellite) with the average size of the crystallites 11 nm. The scanning electron microscopy analysis has revealed that the agglomerated grains have a plate-like structure composed of CuS nanoparticles. The thermal analysis was performed to investigate the thermal stability of the mechanochemically synthesized CuS. The optical properties were studied using UV-Vis and photoluminescence spectroscopy. The determined optical band gap energy 1.80 eV responds to the value of the bulk CuS, because of agglomerated nanoparticles. In addition, a mechanism of CuS mechanochemical reaction was proposed, and the verification of CuS commercial production was performed.

关键词： copper sulfide     industrial mechanochemical synthesis     thermal analysis     optical properties    

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3D Network nanostructured NiCoP nanosheets supported on N-doped carbon coated Ni foam as a highly active

Miaomiao Tong, Lei Wang, Peng Yu, Xu Liu, Honggang Fu

《化学科学与工程前沿（英文）》 2018年 第12卷 第3期   页码 417-424 doi: 10.1007/s11705-018-1711-1

摘要：

A highly active bi-functional electrocatalyst towards both hydrogen and oxygen evolution reactions is critical for the water splitting. Herein, a self-supported electrode composed of 3D network nanostructured NiCoP nanosheets grown on N-doped carbon coated Ni foam (NiCoP/NF@NC) has been synthesized by a hydrothermal route and a subsequent phosphorization process. As a bifunctional electrocatalyst, the NiCoP/NF@NC electrode needs overpotentials of 31.8 mV for hydrogen evolution reaction and 308.2 mV for oxygen evolution reaction to achieve the current density of 10 mA·cm−2 in 1 mol·L−1 KOH electrolyte. This is much better than the corresponding monometal catalysts of CoP/NF@NC and NiP/NF@NC owing to the synergistic effect. NiCoP/NF@NC also exhibits low Tafel slope, and excellent long-term stability, which are comparable to the commercial noble catalysts of Pt/C and RuO2.

关键词： bimetallic phosphides     N-doped carbon     self-support     hydrogen evolution     oxygen evolution    

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Nanostructured hollow spheres of hydroxyapatite: preparation and potential application in drug delivery

Xiaojing ZHANG, Weixin ZHANG, Zeheng YANG, Zhao ZHANG

《化学科学与工程前沿（英文）》 2012年 第6卷 第3期   页码 246-252 doi: 10.1007/s11705-012-1299-9

摘要： A solvothermal method has been successfully used to prepare nanostructured hydroxyapatite (HA) hollow spheres with average diameters of about 500 nm and shell thicknesses of about 100 nm in a glycerin/water mixed solvent. Transmission electron microscopy (TEM) and field-emission scanning electron microscopy (FESEM) images show that the shells of the HA hollow spheres are actually composed of nanosheets with thicknesses of about 10 nm. By tuning the glycerin/water volume ratio, two other kinds of HA solid spheres with average diameters of about 6 or 20 μm were assembled from nanoflakes. The properties of the different kinds of spheres as drug delivery carriers were evaluated. Ibuprofen (IBU) was chosen as the model drug to load into the HA samples. The nanostructured HA samples showed a slow and sustained release of IBU. The HA hollow spheres exhibited a higher drug loading capacity and more favorable release properties than the HA solid spheres and thus are very promising for controlled drug release applications.

关键词： hydroxyapatite     hollow spheres     synthesis     drug release    

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A review on front end conversion in ocean wave energy converters

Nagulan SANTHOSH,Venkatesan BASKARAN,Arunachalam AMARKARTHIK

《能源前沿（英文）》 2015年 第9卷 第3期   页码 297-310 doi: 10.1007/s11708-015-0370-x

摘要： Harvesting the energy from ocean waves is one of the greatest attractions for energy engineers and scientists. Till date, plenty of methods have been adopted to harvest the energy from the ocean waves. However, due to technological and economical complexity, it is intricate to involve the majority of these energy harvesters in the real ocean environment. Effective utilization and sustainability of any wave energy harvester depend upon its adaptability in the irregular seasonal waves, situation capability in maximum energy extraction and finally fulfilling the economic barriers. In this paper, the front end energy conversions are reviewed in detail which is positioned in the first stage of the wave energy converter among other stages such as power take off (PTO) and electrical energy conversion. If the recent development of these front end energy conversion is well known then developing wave energy converter with economic and commercial viability is possible. The aim of this review is to provide information on front end energy conversion of a point absorber and emphasize the strategies and calamity to be considered in designing such kinds of devices to improve the energy harvesting competence. This will be useful to the engineers for speeding up the development of a matured point absorbing type wave energy converter.

关键词： wave energy converter     point absorbers     power take off (PTO)     front end energy conversion    

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标题 作者 时间 类型 操作

Recent progress on nanostructure-based broadband absorbers and their solar energy thermal utilization

Tong Zhang, Shan-Jiang Wang, Xiao-Yang Zhang, Ming Fu, Yi Yang, Wen Chen, Dan Su

期刊论文

高性能纳米贝氏体轴承用钢发展与展望

张福成, 杨志南

期刊论文

Thermal radiative properties of metamaterials and other nanostructured materials: A review

Ceji FU, Zhuomin M. ZHANG

期刊论文

Leidenfrost drops on micro/nanostructured surfaces

Vishal TALARI, Prakhar BEHAR, Yi LU, Evan HARYADI, Dong LIU

期刊论文

Preface to special issue on “Engineering Nanostructured Materials for Advanced Energy and Environmental

期刊论文

New nanostructured sorbents for desulfurization of natural gas

Lifeng WANG, Ralph T. YANG

期刊论文

Structural engineering of transition metal-based nanostructured electrocatalysts for efficient water

Yueqing Wang, Jintao Zhang

期刊论文

Modeling nanostructured catalyst layer in PEMFC and catalyst utilization

Jiejing ZHANG, Pengzhen CAO, Li XU, Yuxin WANG

期刊论文

Design and analysis of Salisbury screens and Jaumann absorbers for solar radiation absorption

Xing FANG, C. Y. ZHAO, Hua BAO

期刊论文

航空移动通信——窄带至宽带的演进

张军

期刊论文

一种作为主动控制宽带吸波器的热可调超材料

邢校菖, 曹阳, 田小永, 吴玲玲

期刊论文

Structural and optical properties of nanostructured copper sulfide semiconductor synthesized in an industrial

Marcela Achimovičová, Erika Dutková, Erika Tóthová, Zdenka Bujňáková, Jaroslav Briančin, Satoshi Kitazono

期刊论文

3D Network nanostructured NiCoP nanosheets supported on N-doped carbon coated Ni foam as a highly active

Miaomiao Tong, Lei Wang, Peng Yu, Xu Liu, Honggang Fu

期刊论文

Nanostructured hollow spheres of hydroxyapatite: preparation and potential application in drug delivery

Xiaojing ZHANG, Weixin ZHANG, Zeheng YANG, Zhao ZHANG

期刊论文

A review on front end conversion in ocean wave energy converters

Nagulan SANTHOSH,Venkatesan BASKARAN,Arunachalam AMARKARTHIK

期刊论文