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Enhanced oxygen vacancies on yttrium oxide with cobalt oxide loaded for accelerating hydrogen production from ammonia decomposition

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Journal of Colloid and Interface Science 2025年 695卷 137732页

作者： Li, Qi Fan, Meiling Tang, Haibo Zhu, Yi Huang, Xiege Zhang, Haining Tang, Haolin Pan, Hongfei R&D Center of Materials and Stack Technology for Fuel Cell National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory Foshan528200 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Xiangyang Polytechnic Xiangyang441050 China Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics Wuhan University of Technology Wuhan430070 China Hubei Key Laboratory of Fuel Cell Wuhan University of Technology Nr. 122 Luoshi Rd. Wuhan430070 China

Ammonia decomposition for hydrogen production has become a critical process in the development of hydrogen economy. Non-noble based material possesses great potential of application in thermal catalysis due to its low cost and appreciable theoretical catalytic activity. However, the durability of non-noble metal catalysts under prolonged operation remains a significant challenge. Herein, the cobalt oxide supported on yttrium oxide catalysts with enhanced oxygen vacancies via co-precipitation was reported by using urea serving as a pH stabilizer, followed by annealing process in an inert atmosphere. The formation of enhanced oxygen vacancies was demonstrated accelerated the N[sbnd]H bond division and nitrogen recombination-desorption, thereby enhancing the efficiency of thermal catalytic decomposition of ammonia. Based on such advantages, the synthesized 50CoO/Y2O3 catalyst exhibited optimal NH3 decomposition performance, achieving an ammonia conversion rate of 98.6 % under a high gas hourly space velocity of 20,000 mL·gcat−1·h−1 with a hydrogen production rate of 22.3 mmol·gcat−1·min−1 at 550 °C. Moreover, the catalyst maintained a stable activity for 120 h without significantly degradation, suggesting non-noble based catalyst a potential competitor in hydrogen production from thermal catalytic ammonia decomposition. © 2025 Elsevier Inc.

关键词： Hydrogen production

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Numerical Simulation and Comparison of Flow Field in different dynamic Co-Culture Conditions

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Biotechnology Journal 2025年第5期20卷 e70039页

作者： Li, Liying Liu, Xinyue Sun, Huamao Ma, Hailin Cheng, Yuen Yee Li, Xiangqin Jia, Zhilin Zhao, Jiaquan Song, Kedong State Key Laboratory of Fine Chemicals Dalian R&D Center for Stem Cell and Tissue Engineering Cancer Hospital of Dalian University of Technology Dalian University of Technology Dalian China Mathematics Teaching and Research Group The High School Attached to Dalian University of Technology Dalian China Institute for Biomedical Materials and Devices Faculty of Science University of Technology Sydney SydneyNSW Australia Department of Hematology the First Affiliated Hospital of Dalian Medical University Dalian China School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan China Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education Dalian Minzu University Dalian China

Bioreactor technology facilitates the gradual automation of cell expansion and the development of biofunctional synthetic alternatives. However, it is difficult to fully understand the flow field and force field environments formed in it by experimental means. Computational fluid dynamics (CFd) offers a robust framework for analyzing and understanding the impacts of fluid flow, material diffusion, and fluid shear stress (FSS) on in vitro cell and tissue regeneration dynamics. In this study, the FLUENT software is used to simulate and calculate the flow field environment of the rotary cell culture system (rCCS) and spinner flask (SF), including dynamic pressure, shear stress, and velocity distribution. Particles of two diameters for three-dimensional cell culture were randomly arranged in different radial/axial positions, and the FSS on the particles in rCCS and SF at different rotational speeds was also analyzed. It is expected to visualize the flow field distribution of the bioreactor and local hydrodynamic changes near the particles, and provide positive assistance for the dynamic culture/co-culture of different cells-microcarriers complex. The distribution of FSS on randomly arranged L and S particles was analyzed in detail to evaluate and screen the suitable operating conditions of these two bioreactors. Visually understanding the flow field distribution and local hydrodynamic changes within the bioreactor is expected to provide positive assistance for dynamic culture. The particles may periodically contact the fresh oxygenated medium during rotation with the fluid. Two fluid circulations in SF were generated in the upper/lower area of the blade, and a relatively static fluid circulation area was formed at the bottom with low velocity and pressure in the center, which was not conducive to material exchange. rotary bioreactors may be more suitable than spinner flasks as a dynamic culture tool for some types of cells or other constructs. © 2025 Wiley-VCH GmbH.

关键词： Tissue culture

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Three-dimensional breast cancer tumor models based on natural hydrogels:a review

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第9期25卷 736-755页

作者： Yan SHU Bing LI Hailin MA Jiaqi LIU Yuen Yee CHENG Xiangqin LI Tianqing LIU Chuwei YANG Xiao MA Kedong SONG State Key Laboratory of Fine Chemicals Dalian R&D Center for Stem Cell and Tissue EngineeringDalian University of TechnologyDalian116024China Institute for Biomedical Materials and Devices Faculty of ScienceUniversity of Technology SydneySydneyNSW2007Australia Emergency Center The Second Hospital of Dalian Medical UniversityDalian116023China Department of Anesthesia The First Affiliated Hospital of Dalian Medical UniversityDalian116011China

Breast cancer is the most common cancer in women and one of the deadliest cancers *** to the distribution of tumor tissue,breast cancer can be divided into invasive and non-invasive *** cancer cells in invasive breast cancer pass through the breast and through the immune system or systemic circulation to different parts of the body,forming metastatic breast *** resistance and distant metastasis are the main causes of death from breast *** on breast cancer has attracted extensive attention from *** vitro construction of tumor models by tissue engineering methods is a common tool for studying cancer mechanisms and anticancer drug *** tumor microenvironment consists of cancer cells and various types of stromal cells,including fibroblasts,endothelial cells,mesenchymal cells,and immune cells embedded in the extracellular *** extracellular matrix contains fibrin proteins(such as types Ⅰ,Ⅱ,Ⅲ,Ⅳ,Ⅵ,and Ⅹ collagen and elastin)and glycoproteins(such as proteoglycan,laminin,and fibronectin),which are involved in cell signaling and binding of growth *** current traditional two-dimensional(2d)tumor models are limited by the growth environment and often cannot accurately reproduce the heterogeneity and complexity of tumor tissues in ***,in recent years,research on three-dimensional(3d)tumor models has gradually increased,especially 3d bioprinting models with high precision and *** with a 2d model,the 3d environment can better simulate the complex extracellular matrix components and structures in the tumor ***-dimensional models are often used as a bridge between 2d cellular level experiments and animal *** matrix,gelatin,sodium alginate,and other natural materials are widely used in the construction of tumor models because of their excellent biocompatibility and non-immune ***,we review various natural scaffold materials and con

关键词： Breast cancer Tumor microenvironment 3d tumor model decellularized extracellular matrix Natural scaffold materials

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Preparation of Temperature-Sensitive Hollow Fiber Membrane and Its detection as a cell Carrier 29th

Preparation of Temperature-Sensitive Hollow Fiber Membrane a...

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29th International Conference on Computational and Experimental Engineering and Sciences, ICCES 2023

作者： Wang, Hao Sun, Yiyi Wang, Jingwen Yuan, Yuhuang Cheng, Yuen Yee Li, Xiangqin Song, Kedong State Key Laboratory of Fine Chemicals Dalian R&D Center for Stem Cell and Tissue Engineering Dalian University of Technology Dalian116024 China Faculty of Science Institute for Biomedical Materials and Devices University of Technology Sydney SydneyNSW2007 Australia

ISBN: (纸本)9783031449468

NIPAAm has been widely used in cell culture and non-destructive desorption in recent years because it can change its surface configuration by changing temperature. In this study, NIPAAm was grafted onto the surface of the HFMs with cerium ammonium nitrate (CAN) as the initiator to prepare the thermosensitive HFMs. This material was used as a cell carrier for temperature sensitivity and biocompatibility assays to achieve non-destructive harvesting of cells from the surface of the HFMs. The morphology showed that poly (n-isopropylacrylamide) (PNIPAAm) was successfully grafted onto the HFMs. The results of water contact angle at different temperatures showed that the prepared samples have good temperature sensitivity. At 37 °C, PC12 cells adhered to and diffused well on the surface of PNIPAAm-g-HFMs. After cooling to 20 °C, the cells fell off the surface of the membrane in sheet form and retain more extracellular matrix proteins. PNIPAAm-g-HFMs in this study have good biocompatibility and can be better used as cell carriers in cell culture in vitro. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： cells

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Solid oxide fuel cells: development status and key technologies

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Gongneng Cailiao yu Qijian Xuebao/Journal of Functional materials and devices 2007年第6期13卷 683-690页

作者： Li, Jian Fuel Cell R and D Center College of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

The present paper reviews the development and current technology status of solid oxide fuel cells (SOFCs);and the materials selection, stack design, cell and stack fabrication as well as performance evaluation of SOFC... 详细信息

关键词： Fabrication processing Key materials Solid oxide fuel cells (SOFC) stack design Testing

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Effects of Pulsed Substrate Bias on Thin TiO2 Films Prepared on Silicon by Arc Ion Plating

Effects of Pulsed Substrate Bias on Thin TiO2 Films Prepared...

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The 11th International Workshop on Plasma-Based Ion Implantation & deposition(第11届等离子基离子注入与沉积国际会议)

作者： Min Zhang Guoqiang Lin Chuang dong Chengsen Liu Mengke Li Zhigang Shao School of Physics and Electronic Technology Liaoning Normal University Dalian 116029 China Fuel Cell R& D Center Dalian Institute of Chemical Physics CAS Dalian 116023 China Key Lab of Materials Modification by Laser 1on and Electron Beams Ministry of Education Dalian University of Technology Dalian 116085 China School of Physics and Electronic Technology Liaoning Normal University Dalian 116029 China Fuel Cell R& D Center Dalian Institute of Chemical Physics CAS Dalian 116023 China

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Effects of pulsed bias on TiO2 thin films prepared on glass and silicon by arc ion plating and simulation of plasma sheath dynamics

Effects of pulsed bias on TiO2 thin films prepared on glass ...

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2011年第三届微电子及等离子体技术国际会议

作者： Min Zhang Guoqiang Lin Chuang dong School of Physics and Electronic Technology Liaoning Normal University Dalian 116029 China Fuel Cell R&D Center Dalian Institute of Chemical Physics CAS Dalian 116023 China Key Lab of Materials Modification by Laser Ion and Electron Beams Ministry of Education DalianUniversity of Technology Dalian 116085 China Key Lab of Materials Modification by Laser Ion and Electron Beams Ministry of Education DalianUniversity of Technology Dalian 116085 Ch

O2 thin films were fabricated on glass and p-(100) silicon substrates by arc ion *** effects of pulsed negative bias on phase and growth of TiO2 films were investigated by applying a pulsed bias ranging from 0V to -90... 详细信息

关键词： Pulsed bias Titanium dioxide films Arc ion plating Plasma simulation sheath dynamics

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development of 2.4-GHz film bulk acoustic wave filter for wireless communication

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Journal of Micro/Nanolithography, MEMS, and MOEMS 2009年第2期8卷

作者： Fang, Chi-Ming Pao, Shih-Yung Lee, Chi-Yuan Lu, Yi-Chang Chen, Pei-Yen Chin, Yung-Chung Chang, Pei-Zen National Taiwan University Institute of Applied Mechanics 1 Sec. 4 Roosevelt Road Taipei 106 Taiwan Yuan Ze University Department of Mechanical Engineering Fuel Cell Research Center 135 Yuan-Tung Road Chungli 320 Taoyuan Taiwan Asia Pacific Microsystems Inc. No. 2 R and D Road 6 Hsinchu Taiwan Chung-Shan Institute of Science and Technology Materials and Electro-Optics Research Division P.O. Box 90008-8-6 Lung-TanYuan 325 Taiwan TXC Corporation 4 Kung Yeh 6th Road Cheng City Tao Yuan 324 Taiwan

This research shows the realization of 2.4-GHz film bulk acoustic wave (FBAW) filters. The design, simulation, fabrication, measurement, and analysis of the film bulk acoustic wave resonator (FBAr) devices are covered, which is helpful for the manufacture of the FBAr devices. The simulation of the FBAr and rF circuitry can be integrated on a single platform. The fabrication of the FBAW filters is compatible with complementary metal-oxide semiconductors. This device can be used in 2.4-GHz bandpass filters, such as 802.11b/g and Bluetooth. In this research, the 2.4-GHz FBAW filters for wireless communication have been accomplished. The fabricated FBAW filters have insertion loss of -10 dB, return loss of -7 dB, and stopband rejection of -25 dB, central frequency of 2.485 GHz, bandwidth of 60 MHz, and size of 0.5 mm × 0.5 mm. © 2009 Society of Photo-Optical Instrumentation Engineers.

关键词： MEMS

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Evaluation of Electrochemical Performance and Carbon deposition Behaviour of Sn, Ag, Cu, Fe-doped Ni/Sccesz Anode Solid Oxide fuel cells Operated with Simulated Biogas

SSRN

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SSrN 2024年

作者： Jiang, Zeyu Sarruf, Bernardo Jordão Moreira El-Kharouf, Ahmad Zhan, Wenfeng Liang, Zhenxing Steinberger-Wilckens, robert Centre for Fuel Cell and Hydrogen Research School of Chemical Engineering University of Birmingham BirminghamB15 2TT United Kingdom GAC R&D Center 668 Jinshan Road East Panyu District Guangdong Guangzhou511434 China Guangdong Provincial Key Laboratory of Fuel Cell Technology School of Chemistry and Chemical Engineering South China University of Technology Guangzhou510641 China GHD 1st Floor Richmond House Lawnswood Business Park LeedsLS16 6QY United Kingdom

The infiltration of Sn, Ag, Cu and Fe dopants into a Ni/ScCeSZ anode was investigated to enhance the catalytic activity towards methane dry reforming and improve the carbon resistance of Ni-based anode solid oxide fuel cells (SOFCs). The electrochemical performance of the modified SOFCs was evaluated under hydrogen and simulated biogas at 750°C. Among all the tested cells, the Sn-doped cell exhibited the highest power output, with peak power densities of 0.997 W•cm-2 and of 0.963 W•cm-2, respectively. The undoped Ni/ScCeSZ anode ceased operation after 11 hours in biogas at 750°C due to severe carbon deposition. In contrast, all doped cells operated successfully for over 120 hours under simulated biogas. SEM and raman spectroscopy characterisations confirmed that no carbon deposition on the surfaces of Sn, Ag, and Cu-doped anodes after the biogas operation. despite carbon deposition was detected on both undoped and Fe-doped anodes after biogas operation, the infiltration of the Fe dopant resulted in a reduced graphitization degree of carbon deposited on the biogas-tested anode surface. © 2024, The Authors. All rights reserved.

关键词： Anode materials

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11th German Conference on Chemoinformatics (GCC 2015) Abstracts

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JOUrNAL OF CHEMINFOrMATICS 2016年第SUPPL 1期8卷 1-27页

作者： [Anonymous] GDCh-CIC Division Associated Board Member Beilstein-Institut zur Förderung der Chemischen Wissenschaften Trakehner Str. 7-9 60487 Frankfurt Germany. ufechner@beilstein-institut.de. Division Medicinal Chemistry Amsterdam Institute for Molecules Medicines and Systems (AIMMS) VU University Amsterdam The Netherlands. Centre for Bioinformatics Uni Hamburg Bundesstr. 43 20146 Hamburg Germany. Sanofi-Aventis Deutschland GmbH 65926 Frankfurt am Main Germany. stefan.guessregen@***. Sanofi-Aventis Deutschland GmbH 65926 Frankfurt am Main Germany. GlaxoSmithKline Stevenage SG1 2NY UK. nicola.j.richmond@***. Discngine Paris 75011 France. Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Germany. marwin.segler@wwu.de. Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Germany. Bundeskriminalamt Wiesbaden Central Analytics II 65173 Wiesbaden Germany. Department of Chemistry and Biochemistry University of California Santa Barbara CA 93111 USA. shea@chem.ucsb.edu. Department of Chemistry and Biochemistry University of California Santa Barbara CA 93111 USA. Chemistry Department Ludwig-Maximilians-Universität München Butenandtstr. 7 81377 Munich Germany. Inorganic Chemistry and Center for Nanointegration University of Duisburg-Essen Essen Germany. CAM-D Technologies Essen Germany. Institute for Bioinformatics and Chemoinformatics Westphalian University of Applied Sciences Recklinghausen Germany. Institute for Bioinformatics and Chemoinformatics Westphalian University of Applied Sciences Recklinghausen Germany. achim.zielesny@w-hs.de. Leiden University Leiden Netherlands. j.fraaije@chem.leidenuniv.nl. Culgi BV Berlin Germany. Physikalische Chemie III TU Dortmund 44227 Dortmund Germany. stefan.kast@tu-dortmund.de. Centre for Molecular Informatics Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW United Kingdom. kcb27@cam.ac.uk. Centre for Molecular Informatics Department of Chemistry

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