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Comprehensive analysis of waste-to-hydrogen technologies integrated with circular economy principles: Potential and challenges

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International Journal of Hydrogen Energy 2025年 139卷 1054-1087页

作者： Le, Thanh Tuan Jain, Akshay El-Shafay, Ahmed Shabana Bora, Bhaskor Jyoti Sharma, Prabhakar Nguyen, Xuan Phuong Duong, Xuan Quang Maireles Torres, Pedro Hoang, Anh Tuan Institute of Engineering HUTECH University Ho Chi Minh City Viet Nam SciHeart Technologies LLP Mane Mala Manjarde Sangli Maharashtra 416312 India Department of Mechanical Engineering College of Engineering in Al-Kharj Prince Sattam Bin Abdulaziz University Al-Kharj11942 Saudi Arabia Assam Energy Institute A Centre of Rajiv Gandhi Institute of Petroleum Technology Sivasagar Assam 785633 India Department of Mechanical Engineering Delhi Skill and Entrepreneurship University Delhi110089 India PATET Research Group Ho Chi Minh City University of Transport Ho Chi Minh City Viet Nam Institute of Mechanical Engineering Vietnam Maritime University Haiphong Viet Nam Department of Inorganic Chemistry Crystallography and Mineralogy Faculty of Science University of Malaga Campus de Teatinos Málaga29071 Spain Energy-Fuel Technology and Applied Material Research Group Dong Nai Technology University Bien Hoa City Viet Nam Faculty of Engineering Dong Nai Technology University Bien Hoa City Viet Nam of Energy and Environment Korea University 145 Anam-ro Seongbuk-gu Seoul02841 Korea Republic of

The evolution to a sustainable and circular economy needs the development of innovative waste management and clean energy production technologies. This work looks into the concept of "waste-to-hydrogen (H2)" as a feasible solution to these challenges. It discusses how to use thermochemical, biochemical, and electrochemical technologies to convert various types of waste, like plastics waste, waste tires, biomass, municipal solid waste, metal waste, and wastewater into renewable H2, in which the advantages and drawbacks of waste-to-H2 technologies have been highlighted. In addition to the synergistic benefits that enhance the overall sustainability of the energy system, the study examines the challenges of H2 technology applications in waste, such as feedstock diversity, process efficiency, scalability, and economic development. It reviews existing waste-derived research and demonstration systems aiming to offer the current status of technology to H2 production and determines possible research and development prospects. The policy frameworks, market dynamics, and socioeconomic challenges are analyzed to establish potential advantages and barriers to widespread waste-to-H2 adoption. It is concluded that waste-to-H2 is a sustainable solution to build a circular economy by converting waste into clean and friendly H2 fuel. The promises and limitations outlined in this paper provide an inclusive assessment of the potential of dissipative H2 technologies and serve as a roadmap for further research and policy development in this area. © 2025 Hydrogen Energy Publications LLC

关键词： Circular economy

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一体化可拉伸的多功能电化学传感纤维构建微量汗液健康监测织物

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science China materials 2024年第1期67卷 251-260页

作者：张安宁周靓靓梁琦敏王欣胡晓康贾康康储宏伟罗勇锋丘龙斌彭慧胜何思斯 Shenzhen Key Laboratory of Flexible Printed Electronics Technology School of ScienceHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China Hunan Province Key Laboratory of Materials Surface&Interface Science and Technology College of ScienceMaterial Science and Engineering SchoolCentral South University of Forestry and TechnologyChangsha 410004China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced MaterialsFudan UniversityShanghai 200438China

透气舒适的传感纺织品可以检测人体汗液中的多种生物标记物,是在日常生活中实现全面健康监测的有效途径.然而,目前的可穿戴柔性电化学纺织品缺乏伸展性,这可能会导致信号不稳定或在移动过程中损坏设备.此外,这些纺织品对多种指示器的集... 详细信息

透气舒适的传感纺织品可以检测人体汗液中的多种生物标记物,是在日常生活中实现全面健康监测的有效途径.然而,目前的可穿戴柔性电化学纺织品缺乏伸展性,这可能会导致信号不稳定或在移动过程中损坏设备.此外,这些纺织品对多种指示器的集成度有限,需要较大的表面积和大量的汗液来激活传感器.在此,我们报告了一种一体化多功能电化学生物传感器纤维,该纤维具有可拉伸性,通过微量汗液即可检测汗液中的多种生物标志物.这种生物传感器是通过将多功能碳纳米管条带以螺旋状排列的方式负载在预先拉伸的聚合物纤维芯上从而充当微电极,并且两者之间具有稳定界面.此外,通过引入超亲水鞘层,提高了生物传感器的汗液捕获效率.该生物传感器能够同时监测pH、K^(+)、Na^(+)、葡萄糖、乳酸和尿酸六种生物标记物,300%的应变下表现出稳定的传感性能.仅需1μL的汗液即可启动对六种生物标记物进行高效检测.由此编织的织物传感系统可以连续、实时地监测多种生物标记信息,从而完成人体健康状况的评估.

关键词：生物传感器生物标记物人体健康状况健康监测聚合物纤维损坏设备伸展性微电极

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Experimental Investigation of Relationship between Inner Ground Resistance Force and Vibration Kinds for Underground Moving Robots

Experimental Investigation of Relationship between Inner Gro...

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Mechatronics and Robotics engineering (ICMRE), International Conference on

作者： Tomohiro Watanabe Kojiro Iizuka Mechanical Engineering Program Faculty of Engineering Niigata University Niigata City Japan Department of Systems and Engineering and Science Shibaura Institute of Technology Saitama City Japan

ISBN: (数字)9798350394276

ISBN: (纸本)9798350394283

In recent years, there have been many missions where the rovers land and explore the surface of planets or other extraterrestrial bodies. The purpose of these missions is to return the samples of extraterrestrial ground. These samples can solve the planets’ origins and their sources of life. They have not only scientific value but also engineering value. Information on ground characteristics is helpful when building the base. The underground samples are especially valuable because they are not affected by space weathering and keep good conditions. In this background, the rovers, which move underground, have received attention as the method to obtain underground samples. In our previous study, the moving mechanism, which moves underground using vibrations, was proposed. The internal ground resistance decreases when imparting vibrations because the ground particles move and behave like a fluid. On the other hand, the inner ground resistance increases after imparting vibrations because the ground was compacted. The proposed mechanism moves underground while changing the ground condition. This study investigated the relationship between internal ground resistance force and vibration kinds because this relationship helps move underground. In the experiment, inner ground resistance force was measured when an object vibrating was dragged on the ground. In the results, the inner ground resistance force is increased by the vibration whose vibratory force is low. On the other hand, it is decreased by the vibration whose vibratory force is high. This knowledge is valuable for designing the rover’s underground movement using vibrations.

关键词： Vibrations Resistance Knowledge engineering Mechatronics Planets Force Land surface

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Molecular Dynamics Study of Nanoparticle Collision with a Surface — Implication to Nanoparticle Filtration

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Aerosol and Air Quality Research 2024年第3期7卷 278-303页

作者： Sato, Shintaro Chen, Da-Ren Pui, David Y. H. Particle Technology Laboratory Mechanical Engineering Department University of Minnesota Minneapolis USA Fujitsu Laboratories Ltd. Atsugi Kanagawa Japan Department of Mechanical Engineering Join Program in Environmental Engineering Science Washington University in St. Louis St. Louis USA

Collision dynamics of nanoparticles with a surface was studied by classical molecular dynamics simulations. Silver, nickel and silica were selected as the particle materials, and silver as the surface material. Particle sizes ranged approximately from 0.5 to 2 nm. The results indicate that particles with thermal energy at room temperature do not bounce off a surface, even when a very weak interaction potential between the particles and the surface is assumed. The loss mechanisms of the center-of-mass energy of nanoparticles colliding with a surface were also investigated. The findings indicate that energy losses to the surface and the rotational degree of freedom are important. The loss to the surface is significant when a harder particle hits a softer surface. This is because the center-of-mass energy is mainly transferred to the surface as elastic energy, and the energy is not effectively transferred back to the particle. Non-spherical silica particles were found to lose more energy than the other types of particles. This phenomenon is due to a large energy transfer to the rotational degree of the freedom upon collision.

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Enhancing Behind-the-Meter Visibility of grid edge PV Systems and Electric Vehicle Charging Loads through Integration of Compact Low-Cost Sensors

Enhancing Behind-the-Meter Visibility of grid edge PV System...

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Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： Mehrnaz Madadi Paul Ohodnicki Subhashish Bhattacharya Electrical Engineering Department North Carolina State University Raleigh US Mechanical and Material Science Department University of Pittsburgh Pittsburgh US

ISBN: (数字)9798331516116

ISBN: (纸本)9798331516123

The growing adoption of solar panels, battery storage, and Electric Vehicle (EV) chargers is driving a profound transformation in the distribution grid system. However, limited visibility into Behind-the-Meter (BTM) Distributed Energy Resources (DERs) generation restricts the full integration of these resources as grid assets. This lack of insight hampers efforts to enhance grid reliability, resilience, reduce operational costs, and expand photovoltaic (PV) hosting capacity. By leveraging existing data from distributed inverters, which are already monitored by controllers, it is possible to improve BTM PV generation visibility without incurring additional hardware costs. Furthermore, the introduction of a compact, low-cost bolt-on sensor can further enhance visibility into BTM PV generation. This paper presents a Power Hardware-in-the-Loop (PHIL) testbed designed to evaluate the feasibility of the "virtual inverter sensing node" and "bolt-on sensor" concepts. These concepts aim to improve BTM visibility by collecting data from BTM DERs, loads such as EV charging stations, and micro-Phasor Measurement Units (μ PMU) within a distribution feeder. The paper demonstrates how real-time sensor data can be processed into actionable measurements within both the physical and virtual sensor interfaces using the PHIL testbed. Additionally, the study compares the benefits of cloud-based data aggregation with the use ofμ PMU as data aggregators, as demonstrated through experimental testing.

关键词： Q measurement Voltage measurement Power measurement Measurement units Soft sensors Phasor measurement units Electric vehicle charging Real-time systems Inverters Reliability

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Study of SiGeSn-based Multiple Quantum Well Laser for Photonics Integrated Circuits 18

Study of SiGeSn-based Multiple Quantum Well Laser for Photon...

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Silicon Photonics XVIII 2023

作者： Olorunsola, Oluwatobi Said, Abdulla Ojo, Solomon Stanchu, Hryhorii Abernathy, Grey Amoah, Sylvester Saha, Samir Wangila, Emmanuel Grant, Joshua Acharya, Sudip Jheng, Yue-Tong Chang, Guo-En Li, Baohua Salamo, Gregory Yu, Shui-Qing Du, Wei Department of Electrical Engineering University of Arkansas FayettevilleAR72701 United States Material Science and Engineering Program University of Arkansas FayettevilleAR72701 United States Institute for Nanoscience and Engineering University of Arkansas FayettevilleAR72701 United States Department of Physics University of Arkansas FayettevilleAR72701 United States Department of Mechanical Engineering National Chun Cheng University Chiayi County62101 Taiwan Arktonics LLC 1339 South Pinnacle Drive FayettevilleAR72701 United States

ISBN: (纸本)9781510659575

As one of two mainstream platforms, photonics integrated circuits (PICs) on Si photonics platform benefits from the mature complementary metal-oxide-semiconductor (CMOS) manufacturing capabilities and allows for the processing of Si-based PICs with ultra-high volume and low cost. Recent studies of SiGeSn materials, which yield true direct bandgap with sufficient Sn incorporation, hold great promise for PICs featuring scalable, cost-effective, and power-efficient. While the exciting developments in bulk devices including lasers, light emitting diodes (LEDs), and photodetector were reported, the quantum wells (QWs) structure and devices have been investigated targeting the dramatically improved and/or novel device performance via variety of quantum confinement effects. In this work, we report the recent progress on SiGeSn QW development. Particularly, the study of MQW laser is presented. Devices with higher optical confinement factors exhibit clear lasing confirmed by the threshold characteristic and the emission spectra below and above threshold. Only spontaneous emission was observed with the thinner cap layer samples. On the other hand, samples with thicker cap layers of 250 and 290 nm exhibit clear lasing at 77 K with thresholds of 214 and 664 kW/cm2, respectively. These promising results establish the guidance for the device design and pave the way for the SiGeSn QW devices towards future high-performance PICs on Si platform. © 2023 SPIE.

关键词： Timing circuits

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Dark features evolution and inhibition mechanism of optical diamond thick film growth by MPCVD

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Ceramics International 2025年

作者： Chan, Siyi Huang, Ke Tu, Juping Yang, Zhiliang Zheng, Liping Liu, Peng An, Kang Li, Haixia Liu, Jinlong Chen, Liangxian Wei, Junjun Li, Chengming Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing100083 China College of Mechanical and Material Engineering North China University of Technology Beijing100144 China Institute of Process Engineering Chinese Academy of Science Beijing100190 China

Optical diamond materials exhibit exceptional optical properties, making them critical for applications such as infrared optical windows, microwave windows, and laser windows. These applications not only require diamond films to have high quality but also demand a large thickness to ensure sufficient strength. However, the appearance of dark features within the diamond is one of the key factors limiting its optical performance, especially in optical-grade diamond thick films. This work focuses on studying the variation in crystal structure during the growth of polycrystalline diamond thick films, aiming to mitigate the trend of quality degradation with increasing film thickness. It was found that diamond thick films deposited by microwave plasma chemical vapor deposition (MPCVD) exhibit significant quality stratification. Layered X-ray diffraction (XRD) and electron backscatter diffraction (EBSD) analysis of thick diamond samples revealed that, as the diamond film thickness increased, particularly when it reached 1200 μm or more, the content of dark features in the film significantly increased. Strong competitive growth occurred between grains, leading to the formation of grain clusters. This phenomenon is likely caused by the rough surfaces (such as depressions or steps) providing higher local activation energy when columnar grains grow to a certain height. Additionally, large-angle grain boundaries between columnar grains concentrate crystal defects, triggering penetrating twins and secondary nucleation. The formed small grains can become secondary grains, competing with the original grains during growth, inevitably introducing voids and low-quality diamond phases. To address this issue, a stepwise growth method was proposed, which refines the grains on the growth surface and reduces the density of dark features, ultimately achieving high-quality thick diamond films with thickness of 1.8 mm and a transmittance of 68.32 % at a wavelength of 10.6 μm. © 2025 Elsevier

关键词： Grain boundaries

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Epilayer on NEAT Grown GaN Schottky Diodes for Radiation Detection

Epilayer on NEAT Grown GaN Schottky Diodes for Radiation Det...

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2023 Transactions of the American Nuclear Society Annual Meeting and Technology Expo, ANS 2023

作者： Remy, Jarod Zhang, Yuxuan Talesara, Vishank Zhao, Hongping Lu, Wu Hashimoto, Tadao Cao, Lei R. Nuclear Engineering Program Department of Mechanical and Aerospace Engineering 281 W. Lane Ave. ColumbusOH43210 United States Department of Electrical and Computer Engineering 281 W. Lane Ave ColumbusOH43210 United States Department of Material Science and Engineering The Ohio State University 281 W. Lane Ave ColumbusOH43210 United States SixPoint Materials Inc 37 Industrial Way STE 106 BuelltonCA United States

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Nitrogen Pretreatment of Growth Substrates for Vacancy-Saturated MoS2

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ACS Applied materials and Interfaces 2023年第36期15卷 42746-42752页

作者： Yao, Yu-Chi Wu, Bo-Yi Chin, Hao-Ting Yen, Zhi-Long Ting, Chu-Chi Hofmann, Mario Hsieh, Ya-Ping Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan Department of Physics National Taiwan University Taipei10617 Taiwan Graduate Institute of Opto-Mechatronics Department of Mechanical Engineering National Chung Cheng University Chia-Yi62102 Taiwan International Graduate Program of Molecular Science and Technology National Taiwan University Taipei10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei10617 Taiwan

Two-dimensional transition-metal dichalcogenides (2D TMDCs) are considered promising materials for optoelectronics due to their unique optical and electric properties. However, their potential has been limited by the occurrence of atomic vacancies during synthesis. While post-treatment processes have demonstrated the passivation of such vacancies, they increase process complexity and affect the TMDC’s quality. We here introduce the concept of pretreatment as a facile and powerful route to solve the problem of vacancies in MoS2. Low-temperature nitridation of the sapphire substrate prior to growth provides a nondestructive method to MoS2 modification without introducing new processing steps or increasing the thermal budget. Spectroscopic characterization and atomic-resolution microscopy reveal the incorporation of nitrogen from the sapphire surface layer into chalcogen vacancies. The resulting MoS2 with nitrogen-saturated defects shows a decrease in midgap states and more intrinsic doping as confirmed by ab initio calculations and optoelectronic measurements. The demonstrated pretreatment method opens up new routes toward future, high-performance 2D electronics, as evidenced by a 3-fold reduction in contact resistance and a 10-fold improved performance of 2D photodetectors. © 2023 American Chemical Society

关键词： Molybdenum compounds

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A Review on Application of Poly(3,4-ethylenedioxythiophene) (PEDOT) in Rechargeable Batteries

Organic Materials

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Organic materials 2022年第4期4卷 292-300页

作者： Su, Laisuo Kumar, Shwetha Sunil Manthiram, Arumugam Reeja-Jayan, B. Materials Science and Engineering Program Texas Materials Institute The University of Texas at Austin Austin 78712 TX United States Department of Mechanical Engineering Carnegie Mellon University Pittsburgh 15213 PA United States

Since the very first patent on poly(3,4-ethylenedioxythiophene) (PEDOT) that was filed in 1988, this polymer has been widely utilized and has achieved great success owing to its high electrical conductivity and excellent stability. The application of the conducting polymer, PEDOT, in renewable energy devices, especially rechargeable batteries, is attracting increasing attention due to its potential to solve the energy and climate crisis. In this review, we summarize the research over the past few decades directed toward the application of PEDOT in rechargeable batteries aimed at improving their electrochemical performance. We focus on PEDOT synthesized via oxidative chemical vapor deposition (oCVD), a relatively new process known for its ability to grow conducting polymer thin films with uniform, pinhole-free properties, and controllable thickness and conformality. For a comparison purpose, PEDOT synthesized via solution-based methods is also briefly summarized. Finally, future research directions for applying oCVD PEDOT in rechargeable batteries are discussed. Introduction PEDOT Synthesis Methods Application of oCVD PEDOT in Rechargeable Batteries Applications of Solution-Based PEDOT in Rechargeable Batteries Conclusions and Outlook. © 2022. The Author(s).

关键词： batteries coating oxidative chemical vapor deposition (oCVD) polyethylene dioxythiophene (PEDOT)

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