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Interfacial induction and regulation for microscale crystallization process: a critical review

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 838-853 doi: 10.1007/s11705-021-2129-8

Abstract: Microscale crystallization is at the frontier of chemical engineering, material science, and biochemical research and is affected by many factors. The precise regulation and control of microscale crystal processes is still a major challenge. In the heterogeneous induced nucleation process, the chemical and micro/nanostructural characteristics of the interface play a dominant role. Ideal crystal products can be obtained by modifying the interface characteristics, which has been proven to be a promising strategy. This review illustrates the application of interface properties, including chemical characteristics (hydrophobicity and functional groups) and the morphology of micro/nanostructures (rough structure and cavities, pore shape and pore size, surface porosity, channels), in various microscale crystallization controls and process intensification. Finally, possible future research and development directions are outlined to emphasize the importance of interfacial crystallization control and regulation for crystal engineering.

Keywords： interfacial crystallization     heterogeneous nucleation     supersaturation     micro/nanostructure     process    

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Fabrication of titania thin film with composite nanostructure and its ability to photodegrade rhodamine

ZHANG Gaojie, WU Jinming, LIU Shaoguang, YAN Mi

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 44-48 doi: 10.1007/s11705-008-0001-8

Abstract: nanorods through an infiltration sol-gel procedure to form a composite titania film with an ordered nanostructure

Keywords： constant     weight     apparent photodegradation     hydrogen     nanorod    

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Investigation of nanostructure of konjac-based water absorbents with atomic force microscopy

Shengrong GENG, Ruotai LIN, Mingli CHEN, Shaoyang LIU, Yifen WANG,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 357-362 doi: 10.1007/s11705-009-0245-y

Abstract: Atomic force microscopy technology is gradually spreading to almost all aspects, including food science and technology, since it was first invented in 1986. In this study, this powerful instrument was applied to image nanostructures of three water absorbents—original konjac powder, konjac powder grafted with acrylic acid using Co γ-irradiation and regenerated grafted powder. Water absorption capacities and the rates of the three absorbents were also determined in this work. Original konjac powder could only absorb 60 times (w/w) of water, while 270 times for the grafted absorbent and 360 times for the regenerated absorbent. The initial water absorption rates in both tap and distilled water were high, but the rate decreased steeply as time elapsed. After 20min, the absorbent was close to saturated status. These physical properties were in accordance with the nanostructures of these three water absorbents.

Keywords： regenerated grafted     -irradiation     grafted     grafted absorbent     accordance    

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Recent advances in SERS detection of perchlorate

Jumin Hao, Xiaoguang Meng

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 448-464 doi: 10.1007/s11705-017-1611-9

Abstract: Perchlorate has recently emerged as a widespread environmental contaminant of healthy concern. Development of novel detection methods for perchlorate with the potential for field use has been an urgent need. The investigation has shown that surface-enhanced Raman scattering (SERS) technique has great potential to become a practical analysis tool for the rapid screening and routine monitoring of perchlorate in the field, particularly when coupled with portable/handheld Raman spectrometers. In this review article, we summarize progress made in SERS analysis of perchlorate in water and other media with an emphasis on the development of SERS substrates for perchlorate detection. The potential of this technique for fast screening and field testing of perchlorate-contaminated environmental samples is discussed. The challenges and possible solutions are also addressed, aiming to provide a better understanding on the development directions in the research field.

Keywords： perchlorate     SERS     detection     substrate     modification     nanostructure    

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Nanostructure and reactivity of soot from biofuel 2,5-dimethylfuran pyrolysis with CO

Lijie ZHANG, Kaixuan YANG, Rui ZHAO, Mingfei CHEN, Yaoyao YING, Dong LIU

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 292-306 doi: 10.1007/s11708-020-0658-3

Abstract: This paper investigated the nanostructure and oxidation reactivity of soot generated from biofuel 2,5The morphology and nanostructure of soot samples were characterized by a low and a high resolution transmissionThe result further confirmed the close relationship between soot nanostructure and oxidation reactivity

Keywords： 2     5-dimethylfuran pyrolysis     soot     CO2 addition     nanostructure     reactivity    

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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

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 35-48 doi: 10.1007/s11705-020-1937-6

Abstract: Nanostructure-based broadband absorbers are prominently attractive in various research fields such as

Keywords： nanostructured broadband absorbers     solar energy harvesting     thermal utilization    

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Recent progress in electrospun nanofibers and their applications in heavy metal wastewater treatment

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 249-275 doi: 10.1007/s11705-022-2245-0

Abstract: Novel adsorbents with a simple preparation process and large capacity for removing highly toxic and nondegradable heavy metals from water have drawn the attention of researchers. Electrospun nanofiber membranes usually have the advantages of large specific surface areas and high porosity and allowing flexible control and easy functionalization. These membranes show remarkable application potential in the field of heavy metal wastewater treatment. In this paper, the electrospinning technologies, process types, and the structures and types of nanofibers that can be prepared are reviewed, and the relationships among process, structure and properties are discussed. On one hand, based on the different components of electrospun nanofibers, the use of organic, inorganic and organic−inorganic nanofiber membrane adsorbents in heavy metal wastewater treatment are introduced, and their advantages and future development are summarized and prospected. On the other hand, based on the microstructure and overall structure of the nanofiber membrane, the recent progresses of electrospun functional membranes for heavy metal removal are reviewed, and the advantages of different structures for applications are concluded. Overall, this study lays the foundation for future research aiming to provide more novel structured adsorbents.

Keywords： electrospinning     heavy metal     adsorption     nanostructure     wastewater    

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Tuning the catalytic selectivity in electrochemical CO

Jiafang XIE,Yuxi HUANG,Hanqing YU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 861-866 doi: 10.1007/s11783-014-0742-1

Abstract: Electrochemical conversion of CO to hydrocarbons can relieve both environmental and energy stresses. However, electrocatalysts for this reaction usually suffer from a poor product selectivity and a large overpotential. Here we report that tunable catalytic selectivity for hydrocarbon formation could be achieved on Cu nanomaterials with different morphologies. By tuning the electrochemical parameters, either Cu oxide nanowires or nanoneedles were fabricated and then electrochemically reduced to the corresponding Cu nanomaterials. The Cu nanowires preferred the formation of C H , while the Cu nanoneedles favored the production of more CH , rather than C H . Our work provides a facile synthetic strategy for preparing Cu-based nanomaterials to achieve selective CO reduction.

Keywords： electrochemical CO2 reduction     Cu oxide     nanostructure     selectivity     hydrocarbon formation    

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Spectral emittance measurements of micro/nanostructures in energy conversion: a review

Shiquan SHAN, Chuyang CHEN, Peter G. LOUTZENHISER, Devesh RANJAN, Zhijun ZHOU, Zhuomin M. ZHANG

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 482-509 doi: 10.1007/s11708-020-0693-0

Abstract: Micro/nanostructures play a key role in tuning the radiative properties of materials and have been applied to high-temperature energy conversion systems for improved performance. Among the various radiative properties, spectral emittance is of integral importance for the design and analysis of materials that function as radiative absorbers or emitters. This paper presents an overview of the spectral emittance measurement techniques using both the direct and indirect methods. Besides, several micro/nanostructures are also introduced, and a special emphasis is placed on the emissometers developed for characterizing engineered micro/nanostructures in high-temperature applications (e.g., solar energy conversion and thermophotovoltaic devices). In addition, both experimental facilities and measured results for different materials are summarized. Furthermore, future prospects in developing instrumentation and micro/nanostructured surfaces for practical applications are also outlined. This paper provides a comprehensive source of information for the application of micro/nanostructures in high-temperature energy conversion engineering.

Keywords： concentrating solar power (CSP)     emittance measurements     high temperature     micro/nanostructure     selective    

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Recent Advances in Electrode Design Based on One-Dimensional Nanostructure Arrays for Proton Exchange Review

Shangfeng Du

Engineering 2021, Volume 7, Issue 1,   Pages 33-49 doi: 10.1016/j.eng.2020.09.014

Abstract: Advances in three-dimensional (3D) ordered electrodes based on 1D Pt-based nanostructure arrays haveincreasing electrochemical surface area (ECSA) and quantifying oxygen mass transport resistance for 1D nanostructure

Keywords： Proton exchange membrane fuel cell (PEMFC)     Electrode     One-dimensional (1D)     Oxygen reduction reaction (ORR)     Catalyst     Ordered    

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Facile synthesis of hierarchical flower-like Ag/Cu

Mengyun Wang, Shengbo Zhang, Mei Li, Aiguo Han, Xinli Zhu, Qingfeng Ge, Jinyu Han, Hua Wang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 813-823 doi: 10.1007/s11705-019-1854-8

Abstract: By varying the Ag/Cu atomic ratio, Ag /Cu O, having a hierarchical, flower-like nanostructure with intersecting

Keywords： bimetallic nanostructure     hierarchical metal/oxide nanomaterial     galvanic replacement     electrochemical reduction    

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Fabrication of Periodic Nanostructures Using AFM Tip-Based Nanomachining: Combining Groove and Material Pile-Up Topographies Article

Yanquan Geng, Yongda Yan, Jiqiang Wang, Emmanuel Brousseau, Yanwen Sun, Yazhou Sun

Engineering 2018, Volume 4, Issue 6,   Pages 787-795 doi: 10.1016/j.eng.2018.09.010

Abstract:

This paper presents an atomic force microscopy (AFM) tip-based nanomachining method to fabricate periodic nanostructures. This method relies on combining the topography generated by machined grooves with the topography resulting from accumulated pile-up material on the side of these grooves. It is shown that controlling the distance between adjacent and parallel grooves is the key factor in ensuring the quality of the resulting nanostructures. The presented experimental data show that periodic patterns with good quality can be achieved when the feed value between adjacent scratching paths is equal to the width between the two peaks of material pile-up on the sides of a single groove. The quality of the periodicity of the obtained nanostructures is evaluated by applying one- and two-dimensional fast Fourier transform (FFT) algorithms. The ratio of the area of the peak part to the total area in the normalized amplitude–frequency characteristic diagram of the cross-section of the measured AFM image is employed to quantitatively analyze the periodic nanostructures. Finally, the optical effect induced by the use of machined periodic nanostructures for surface colorization is investigated for potential applications in the fields of anti-counterfeiting and metal sensing.

Keywords： Atomic force microscopy     Nanomachining     Periodic nanostructure     Single-crystal copper    

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Performance of a Hierarchically Nanostructured W–Cu Composite Produced via Mediating Phase Separation Article

Chao Hou, Hao Lu, Zhi Zhao, Xintao Huang, Tielong Han, Junhua Luan, Zengbao Jiao, Xiaoyan Song, Zuoren Nie

Engineering 2023, Volume 26, Issue 7,   Pages 173-184 doi: 10.1016/j.eng.2022.09.017

Abstract: In addition to a dual network composed of a Cu phase and the W–Cu nanostructure, dense Al-containing

Keywords： Immiscible-component composite     Phase separation     Nanostructure     Mechanical properties     Interface modulation    

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Rational design of semiconductor metal oxide nanomaterials for gas sensing by template-assisted synthesis: a survey Review

Yuanyang XUN, Siqi LI, Feiyu ZHANG, Yan HONG, Ke XU, Ligang CHEN, Song LIU, Bin LI,lisiqibest@sina.com,carlosliusong@nefu.edu.cn,libinzh62@163.com

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 7,   Pages 945-963 doi: 10.1631/FITEE.2200552

Abstract: have received extensive attention because of the gas pollution caused by rapid construction of urbanization and industrialization. based on semiconductor metal oxide (SMO) have the advantages of high response, excellent repeatability, stability, and cost-effectiveness, and have become extremely important components in the gas sensor field. Materials with regular structures and controllable morphology exhibit more consistent and repeatable performance. However, during the process of material synthesis, because of the uncontrollability of the microcosm, nanomaterials often show irregularities, unevenness, and other shortcomings. Thus, the synthesis of with well-aligned one-al (1D) structures, two-al (2D) layered structures, and three-al (3D) hierarchical structures has received extensive attention. To obtain regular structured nanomaterials with desired morphologies and s, a template-assisted synthesis method with low cost and controllable process seems a very efficient strategy. In this review, we introduce the morphology and performance of SMO sensors with 1D, 2D, and 3D structures, discuss the impact of a variety of morphologies on gas sensor performance (response and stability), and shed new light on the synthesis of gas sensing materials with stable structure and excellent performance.

Keywords： Gas sensors     Chemi-resistors     Template-assisted methods     Nanostructure     Dimension    

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Title Author Date Type Operation

Interfacial induction and regulation for microscale crystallization process: a critical review

Journal Article

Fabrication of titania thin film with composite nanostructure and its ability to photodegrade rhodamine

ZHANG Gaojie, WU Jinming, LIU Shaoguang, YAN Mi

Journal Article

Investigation of nanostructure of konjac-based water absorbents with atomic force microscopy

Shengrong GENG, Ruotai LIN, Mingli CHEN, Shaoyang LIU, Yifen WANG,

Journal Article

Recent advances in SERS detection of perchlorate

Jumin Hao, Xiaoguang Meng

Journal Article

Nanostructure and reactivity of soot from biofuel 2,5-dimethylfuran pyrolysis with CO

Lijie ZHANG, Kaixuan YANG, Rui ZHAO, Mingfei CHEN, Yaoyao YING, Dong LIU

Journal Article

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

Journal Article

Recent progress in electrospun nanofibers and their applications in heavy metal wastewater treatment

Journal Article

Tuning the catalytic selectivity in electrochemical CO

Jiafang XIE,Yuxi HUANG,Hanqing YU

Journal Article

Spectral emittance measurements of micro/nanostructures in energy conversion: a review

Shiquan SHAN, Chuyang CHEN, Peter G. LOUTZENHISER, Devesh RANJAN, Zhijun ZHOU, Zhuomin M. ZHANG

Journal Article

Recent Advances in Electrode Design Based on One-Dimensional Nanostructure Arrays for Proton Exchange

Shangfeng Du

Journal Article

Facile synthesis of hierarchical flower-like Ag/Cu

Mengyun Wang, Shengbo Zhang, Mei Li, Aiguo Han, Xinli Zhu, Qingfeng Ge, Jinyu Han, Hua Wang

Journal Article

Fabrication of Periodic Nanostructures Using AFM Tip-Based Nanomachining: Combining Groove and Material Pile-Up Topographies

Yanquan Geng, Yongda Yan, Jiqiang Wang, Emmanuel Brousseau, Yanwen Sun, Yazhou Sun

Journal Article

Performance of a Hierarchically Nanostructured W–Cu Composite Produced via Mediating Phase Separation

Chao Hou, Hao Lu, Zhi Zhao, Xintao Huang, Tielong Han, Junhua Luan, Zengbao Jiao, Xiaoyan Song, Zuoren Nie

Journal Article

Rational design of semiconductor metal oxide nanomaterials for gas sensing by template-assisted synthesis: a survey

Yuanyang XUN, Siqi LI, Feiyu ZHANG, Yan HONG, Ke XU, Ligang CHEN, Song LIU, Bin LI,lisiqibest@sina.com,carlosliusong@nefu.edu.cn,libinzh62@163.com

Journal Article