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  1. AU="Deng, Qiyuan"
  2. AU="Raghda H. Gouda"
  3. AU="Copin, Y."
  4. AU="Twomey, Bernadette"
  5. AU="Greendale, Gail A"
  6. AU="Haseli Mashhadi, Nazanin"
  7. AU="Pilecki, Z."
  8. AU="Alegado, Rosanna A"
  9. AU="Lv, Xinpeng"
  10. AU="Mare, Marzia"
  11. AU="Saleem, Nadia"
  12. AU="Garcia, F G"
  13. AU="Choi, Jong-Il"
  14. AU="Jandial, Tanvi"
  15. AU="Sartori, Chiara"
  16. AU="Pugsley, T A"
  17. AU=Passino Claudio
  18. AU="Ji, Ziwei"
  19. AU="Lim, K E"
  20. AU="Foresti, C."
  21. AU="Czimer, Dávid"
  22. AU="Nayak, Naren"
  23. AU="Khan, Jahidur Rahman"
  24. AU="Huber, Tobias B"
  25. AU="Özbek, Süha Süreyya"
  26. AU="Elujoba, Anthony A"
  27. AU="Lucas, Brian P"
  28. AU="Ngabo, Lucien"
  29. AU="M Elizabeth H. Hammond"
  30. AU="Poppe, Katrina"
  31. AU=Du Ping
  32. AU=Adorno E AU=Adorno E
  33. AU="Rehn, Alexandra"
  34. AU="Senff-Ribeiro, Andrea"

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  1. Artikel ; Online: Preparation, Characterization, Photochromic Properties, and Mechanism of PMoA/ZnO/PVP Composite Film.

    Song, Tiehong / Li, Jinyao / Deng, Qiyuan / Gao, Yanjiao

    Molecules (Basel, Switzerland)

    2023  Band 28, Heft 22

    Abstract: A novel photochromic heteropolyacid-based composite film consisting of phosphomolybdic acid (PMoA), ZnO, and polyvinylpyrrolidone (PVP) was fabricated by a sol-gel process. The microstructure and photochromic properties of the PMoA/ZnO/PVP were ... ...

    Abstract A novel photochromic heteropolyacid-based composite film consisting of phosphomolybdic acid (PMoA), ZnO, and polyvinylpyrrolidone (PVP) was fabricated by a sol-gel process. The microstructure and photochromic properties of the PMoA/ZnO/PVP were characterized via Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible spectroscopy (UV-Vis). The FTIR spectra showed that the basic structures of ZnO and PVP, and the Keggin structure of PMoA in the PMoA/ZnO/PVP composite film, had not been destroyed during the preparation. The TEM images demonstrated that ZnO presented a rod-like structure, while PMoA was spherical, and many PMoA balls adhered to the surface of the ZnO rods. The XPS spectra of Mo 3d indicated that the valency of Mo atoms in the PMoA/ZnO/PVP was changed by visible light exposure. After visible light irradiation, the PMoA/ZnO/PVP varied from slight yellow to blue, while undergoing an opposite color change upon heating. The discoloration mechanism of the PMoA/ZnO/PVP was consistent with the photoelectron transfer mechanism.
    Sprache Englisch
    Erscheinungsdatum 2023-11-15
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28227605
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    Zs.MO 81: Hefte anzeigen

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  2. Artikel ; Online: Piezoelectric polarization coupled with photoinduced catalytic oxidation technology for environmental pollution control: Recent advances and future prospects.

    Li, Guanqiao / Song, Tiehong / Gao, Yanjiao / Deng, Qiyuan / Jiang, Yi / Yang, Shenggang

    The Science of the total environment

    2023  Band 905, Seite(n) 167284

    Abstract: Energy scarcity and environmental pollution concerns have become substantial impediments to sustainable global economic development. The advent of semiconductor photocatalysis technology provides a potential possibility for effectively alleviating ... ...

    Abstract Energy scarcity and environmental pollution concerns have become substantial impediments to sustainable global economic development. The advent of semiconductor photocatalysis technology provides a potential possibility for effectively alleviating excessive energy consumption and maintaining the long-term stability of the aqueous ecosystem. However, the inefficient transmission efficiency of charge carriers and the high recombination rate of photogenerated electron-hole pairs will culminate in the mediocre catalytic performance observed in conventional semiconductor materials. Fortunately, the piezo-photocatalysis ingeniously integrates the piezoelectric properties of piezoelectric crystals with the optoelectronic properties of semiconductors, thus building a theoretical system of photo-electric-chemical three-phase coupled catalysis. Currently, the photo-mechanical energy synergistic catalytic oxidation degradation process, as a cutting-edge technology based on clean renewable energy, has been perceived as a promising environmental remediation strategy. Herein, a critical review of the application of piezo-photocatalysis in environmental pollution control was delivered. We undertook a comprehensive analysis to elucidate the underlying enhancement mechanism of the piezoelectric effect on photocatalysis in terms of charge migration dynamics and pertinent energy band bending phenomena. In addition, we meticulously summarized diverse innovative methods for introducing vibration energy in piezo-photocatalytic degradation systems (ultrasound, fluid mechanical energy, airflow, self-assembled reactors, etc.). Then, state-of-the-art research advances in the field of environmental pollution control and the corresponding environmental decontamination mechanisms were elaborated based on various integration modes of catalysts (single component, noble metal deposition, heterojunction, coupled substrate materials, etc.). Eventually, an in-depth assessment of current limitations and development trends of piezo-photocatalytic degradation technology has been proposed, along with proactive strategies aimed at surmounting the existing challenges.
    Sprache Englisch
    Erscheinungsdatum 2023-09-21
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article ; Review
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.167284
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 949: Hefte anzeigen Standort:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  3. Buch ; Online: XRoute Environment

    Zhou, Zhanwen / Zhuo, Hankz Hankui / Zhang, Xiaowu / Deng, Qiyuan

    A Novel Reinforcement Learning Environment for Routing

    2023  

    Abstract: Routing is a crucial and time-consuming stage in modern design automation flow for advanced technology nodes. Great progress in the field of reinforcement learning makes it possible to use those approaches to improve the routing quality and efficiency. ... ...

    Abstract Routing is a crucial and time-consuming stage in modern design automation flow for advanced technology nodes. Great progress in the field of reinforcement learning makes it possible to use those approaches to improve the routing quality and efficiency. However, the scale of the routing problems solved by reinforcement learning-based methods in recent studies is too small for these methods to be used in commercial EDA tools. We introduce the XRoute Environment, a new reinforcement learning environment where agents are trained to select and route nets in an advanced, end-to-end routing framework. Novel algorithms and ideas can be quickly tested in a safe and reproducible manner in it. The resulting environment is challenging, easy to use, customize and add additional scenarios, and it is available under a permissive open-source license. In addition, it provides support for distributed deployment and multi-instance experiments. We propose two tasks for learning and build a full-chip test bed with routing benchmarks of various region sizes. We also pre-define several static routing regions with different pin density and number of nets for easier learning and testing. For net ordering task, we report baseline results for two widely used reinforcement learning algorithms (PPO and DQN) and one searching-based algorithm (TritonRoute). The XRoute Environment will be available at https://github.com/xplanlab/xroute_env.

    Comment: arXiv admin note: text overlap with arXiv:1907.11180 by other authors
    Schlagwörter Computer Science - Artificial Intelligence
    Thema/Rubrik (Code) 629
    Erscheinungsdatum 2023-05-23
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel: Microstructure Enhances the Local Electric Field and Promotes Water Freezing

    Deng, Qiyuan / Wang, Hong / Zhou, Xin / Xie, Zhenting / Tian, Ye / Zhu, Xun / Chen, Rong / Ding, Yudong / Liao, Qiang

    Industrial & engineering chemistry process design and development. 2022 Aug. 01, v. 61, no. 32

    2022  

    Abstract: Ice-energy storage technology (IEST) can effectively improve the energy utilization rate and thus reduce carbon emissions, which is valuable and significant for achieving peak carbon dioxide emission and carbon neutrality. However, how to produce a large ...

    Abstract Ice-energy storage technology (IEST) can effectively improve the energy utilization rate and thus reduce carbon emissions, which is valuable and significant for achieving peak carbon dioxide emission and carbon neutrality. However, how to produce a large amount of ice with high efficiency and low energy consumption is the main bottleneck restricting the promotion of IEST. In this paper, poly(dimethylsiloxane) (PDMS) substrates with different microstructures were prepared to investigate water freezing in an electrostatic field. The results show that the nucleation temperature of water is raised with the EF. Furthermore, at an EF of 10 kV/cm, a micro-triangular-prism substrate has the best effect on promoting nucleation. Moreover, the energy consumption during the freezing process is effectively reduced by a combination of applying EF and substrate modification. This work sheds new light on the design of IEST and has potential utilization in food cryopreservation.
    Schlagwörter carbon ; carbon dioxide ; cryopreservation ; electric field ; energy ; ice ; microstructure ; process design ; storage technology ; water temperature
    Sprache Englisch
    Erscheinungsverlauf 2022-0801
    Umfang p. 11777-11789.
    Erscheinungsort American Chemical Society
    Dokumenttyp Artikel
    ZDB-ID 1484436-9
    ISSN 1520-5045 ; 0888-5885
    ISSN (online) 1520-5045
    ISSN 0888-5885
    DOI 10.1021/acs.iecr.2c01613
    Datenquelle NAL Katalog (AGRICOLA)

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  5. Artikel: Carbon-Based Photothermal Superhydrophobic Materials with Hierarchical Structure Enhances the Anti-Icing and Photothermal Deicing Properties

    Xie, Zhenting / Wang, Hong / Geng, Yang / Li, Meng / Deng, Qiyuan / Tian, Ye / Chen, Rong / Zhu, Xun / Liao, Qiang

    ACS applied materials & interfaces. 2021 Sept. 29, v. 13, no. 40

    2021  

    Abstract: Ice formation on the surface of outdoor equipment brings significant inconvenience to human life and production. Superhydrophobic materials with the micro-nanostructure are considered to be effective anti-icing materials. However, repeated icing and ... ...

    Abstract Ice formation on the surface of outdoor equipment brings significant inconvenience to human life and production. Superhydrophobic materials with the micro-nanostructure are considered to be effective anti-icing materials. However, repeated icing and deicing processes will destroy the structure and lose anti-icing properties. Herein, low-cost, durable, high-efficiency photothermal superhydrophobic materials were prepared by electrochemical deposition and silanization treatment methods. Combined with the black-body property of carbon materials and the micro-nano hierarchical structure, the as-prepared material has excellent photothermal and superhydrophobic properties. The surface temperature can rise to 90 °C, and the freezing droplets can melt in 100 s under 100 mW/cm² of sunlight illumination. The superhydrophobic property endows the material with excellent anti-icing performance, and the icing delay time is as long as 3600 s. The melted water droplet can quickly roll off due to the low adhesion of the superhydrophobic surface, which avoids the refreezing of the melted droplet and enhances the photothermal conversion performance. We innovatively use the elemental tracer method to understand the melted water droplet roll off mechanism on inclined surfaces. In addition, the heat transfer model of anti-icing and photothermal deicing processes are established to confirm that the heat required for melting ice during the deicing process is mainly generated by photothermal materials. Finally, the feasibility of practical application of the material was verified by the anti-icing/deicing experiment of a wind turbine blade and ice/frost layer melting experiment. It concludes that the superior anti-icing and deicing properties are realized using the high photothermal conversion and excellent superhydrophobic properties of the prepared photothermal superhydrophobic materials. This study provides a perspective for constructing micro-nano hierarchical structures on the surface and combining them with the abundant solar energy in nature to develop photothermal anti-icing materials for practical application.
    Schlagwörter adhesion ; carbon ; droplets ; electrochemistry ; equipment ; frost ; heat transfer ; humans ; hydrophobicity ; ice ; lighting ; models ; solar energy ; solar radiation ; surface temperature ; tracer techniques ; wind turbines
    Sprache Englisch
    Erscheinungsverlauf 2021-0929
    Umfang p. 48308-48321.
    Erscheinungsort American Chemical Society
    Dokumenttyp Artikel
    ISSN 1944-8252
    DOI 10.1021/acsami.1c15028
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  6. Artikel ; Online: Heat Transfer Characteristics of Carbon-Based Photothermal Superhydrophobic Materials with Thermal Insulation Micropores During Anti-icing/Deicing.

    Xie, Zhenting / Wang, Hong / Deng, Qiyuan / Tian, Ye / Shao, Yice / Chen, Rong / Zhu, Xun / Liao, Qiang

    The journal of physical chemistry letters

    2022  Band 13, Heft 43, Seite(n) 10237–10244

    Abstract: Photothermal deicing is a noncontact, economically, efficient, and environmentally friendly melting/preventing ice method. Obtaining a cheap, easily fabricated material with high photothermal conversion and deicing efficiency is a challenge. Here, carbon- ...

    Abstract Photothermal deicing is a noncontact, economically, efficient, and environmentally friendly melting/preventing ice method. Obtaining a cheap, easily fabricated material with high photothermal conversion and deicing efficiency is a challenge. Here, carbon-based photothermal superhydrophobic materials with thermal insulation micropores were prepared by using the salt-template. We demonstrate that the microholes array structure can enhance light absorption and hydrophobicity of the material, and the micropores structure can inhibit the heat transfer from the surface to the subcooled substrate, which synergistically greatly enhances the photothermal conversion. A heat transfer model was established to clarify the influence mechanisms of air cushion on interfacial heat transfer during the photothermal anti-icing and deicing process. The self-cleaning, flexibility, mechanical, and chemical stability tests show that the material has the potential for outdoor application. The prepared materials with high photothermal deicing efficiency provide a new way for the anti-icing and deicing of outdoor equipment.
    Sprache Englisch
    Erscheinungsdatum 2022-10-27
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.2c02655
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  7. Buch ; Online: Fed-TDA

    Duan, Shaoming / Liu, Chuanyi / Han, Peiyi / He, Tianyu / Xu, Yifeng / Deng, Qiyuan

    Federated Tabular Data Augmentation on Non-IID Data

    2022  

    Abstract: Non-independent and identically distributed (non-IID) data is a key challenge in federated learning (FL), which usually hampers the optimization convergence and the performance of FL. Existing data augmentation methods based on federated generative ... ...

    Abstract Non-independent and identically distributed (non-IID) data is a key challenge in federated learning (FL), which usually hampers the optimization convergence and the performance of FL. Existing data augmentation methods based on federated generative models or raw data sharing strategies for solving the non-IID problem still suffer from low performance, privacy protection concerns, and high communication overhead in decentralized tabular data. To tackle these challenges, we propose a federated tabular data augmentation method, named Fed-TDA. The core idea of Fed-TDA is to synthesize tabular data for data augmentation using some simple statistics (e.g., distributions of each column and global covariance). Specifically, we propose the multimodal distribution transformation and inverse cumulative distribution mapping respectively synthesize continuous and discrete columns in tabular data from a noise according to the pre-learned statistics. Furthermore, we theoretically analyze that our Fed-TDA not only preserves data privacy but also maintains the distribution of the original data and the correlation between columns. Through extensive experiments on five real-world tabular datasets, we demonstrate the superiority of Fed-TDA over the state-of-the-art in test performance and communication efficiency.
    Schlagwörter Computer Science - Machine Learning ; Computer Science - Cryptography and Security ; Statistics - Machine Learning
    Thema/Rubrik (Code) 006
    Erscheinungsdatum 2022-11-21
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  8. Artikel ; Online: Carbon-Based Photothermal Superhydrophobic Materials with Hierarchical Structure Enhances the Anti-Icing and Photothermal Deicing Properties.

    Xie, Zhenting / Wang, Hong / Geng, Yang / Li, Meng / Deng, Qiyuan / Tian, Ye / Chen, Rong / Zhu, Xun / Liao, Qiang

    ACS applied materials & interfaces

    2021  Band 13, Heft 40, Seite(n) 48308–48321

    Abstract: Ice formation on the surface of outdoor equipment brings significant inconvenience to human life and production. Superhydrophobic materials with the micro-nanostructure are considered to be effective anti-icing materials. However, repeated icing and ... ...

    Abstract Ice formation on the surface of outdoor equipment brings significant inconvenience to human life and production. Superhydrophobic materials with the micro-nanostructure are considered to be effective anti-icing materials. However, repeated icing and deicing processes will destroy the structure and lose anti-icing properties. Herein, low-cost, durable, high-efficiency photothermal superhydrophobic materials were prepared by electrochemical deposition and silanization treatment methods. Combined with the black-body property of carbon materials and the micro-nano hierarchical structure, the as-prepared material has excellent photothermal and superhydrophobic properties. The surface temperature can rise to 90 °C, and the freezing droplets can melt in 100 s under 100 mW/cm
    Sprache Englisch
    Erscheinungsdatum 2021-09-29
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.1c15028
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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