Review
Chemistry, Physical
Jinzhe Lyu, Viktor Kudiiarov, Andrey Lider
Summary: With the increasing energy crisis and environmental problems, there is a need to find an efficient renewable energy source. Hydrogen energy is considered promising and magnesium can be a good hydrogen storage material. However, its slow kinetic performance has hindered practical applications.
Article
Chemistry, Multidisciplinary
Sebastian T. Emmerling, Luzia S. Germann, Patrick A. Julien, Igor Moudrakovski, Martin Etter, Tomislav Friscic, Robert E. Dinnebier, Bettina Lotsch
Summary: Covalent organic frameworks (COFs) are a new class of molecularly precise, porous functional materials with diverse applications. This research provides experimental evidence of solvent-based COF templating and advances the understanding of mechanochemistry as a green route for COF synthesis. The study reveals key reaction intermediates in the synthesis of imine COFs and the role of a solid-state catalyst in directing reaction kinetics and mechanism.
Article
Chemistry, Physical
Mengru Hu, Xin Sun, Bo Li, Peng Li, Meichai Xiong, Jun Tan, Zhangze Ye, Juergen Eckert, Chu Liang, Hongge Pan
Summary: This study presents a low-cost, time-saving, and low-carbon method for synthesizing Mg(NH2)(2) through mechanochemical reaction of metallic Mg with ammonia. The synthesized Mg(NH2)(2) shows comparable hydrogen storage performance as the conventional method, providing a potential large-scale synthesis route for hydrogen storage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Austin J. Richard, Michael Ferguson, Blaine G. Fiss, Hatem M. Titi, Jesus Valdez, Nikolas Provatas, Tomislav Friscic, Audrey Moores
Summary: Mechanochemistry has proven to be a successful approach for sustainable chemical transformations, including the synthesis of gold nanoparticles. However, the processes involved in the solid-state reduction of gold salts and the formation of nanoparticles are not well understood. This study presents a mechanically activated aging synthesis of gold nanoparticles using a solid-state Turkevich reaction. The reaction is monitored over a six-week period at different temperatures, allowing for in situ analysis of both reduction and nanoparticle formation processes. Through various spectroscopic and microscopic techniques, valuable insights into the mechanisms of solid-state formation of gold nanoparticles are obtained, leading to the establishment of the first kinetic model for this process.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Physical
Yike Huang, Cuihua An, Qiuyu Zhang, Lei Zang, Huaxu Shao, Yafei Liu, Yan Zhang, Huatang Yuan, Caiyun Wang, Yijing Wang
Summary: The research demonstrates a quasi-solid-state template strategy for the synthesis of highly dispersed metal catalysts on nitrogen-doped carbon, successfully applied in MgH2. This method achieves dispersion of metal precursor, evaporation of solvent, downsizing of templates, and successful synthesis of various metal catalysts in a single-step ball-milling process.
Article
Chemistry, Physical
Lu Yang, Xiaojiang Hou, Kaiming Hou, Hongchang Shi, Lei Feng, Guoquan Suo, Xiaohui Ye, Li Zhang, Yanling Yang
Summary: This study investigates the effects of adding different catalysts to Mg-10 wt% Ni alloy on hydrogen production in simulated seawater, with the results showing that the addition of hollow SnO2 nanotubes and lamellar EG can improve hydrogen generation rates. The activity of catalysts on nucleation and growth of Mg(OH)(2) in the hydrolysis reaction stage influences hydrogen production performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
M. Dragojlovic, I Milanovic, A. Gradisek, S. Kurko, M. Mitric, A. Umicevic, J. Radakovic, K. Batalovic
Summary: LiAlH4 with 5 wt% Fe2O3 showed significantly lower dehydrogenation temperature and released over 7 wt% H-2 in the temperature range of 143-154 degrees C. Various analytical methods were used to investigate the mechanisms of catalytic influence and electron transfer in the destabilization process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biochemistry & Molecular Biology
Friedrich Fink, Tomasz M. Stawski, Jorg M. Stockmann, Franziska Emmerling, Jana Falkenhagen
Summary: In this article, a novel one-pot mechanochemical reaction was presented for the surface activation of lignin. The reaction involved environmentally friendly oxidation with hydrogen peroxide, depolymerization of high molecular weight fractions, and the introduction of new carbonyl functions into the lignin backbone. The results showed significant improvements in molecular weight, carboxyl functionalities, and water adsorption.
Article
Multidisciplinary Sciences
Edwin Andrew Ofudje, James Asamu Akande, Ezekiel Folorunso Sodiya, Gabriel O. Ajayi, Adeniyi John Ademoyegun, Abdullah G. Al-Sehemi, Yasar N. Kavil, Ammar M. Bakheet
Summary: There is a high demand for bioactive and non-toxic biomaterials in tissue engineering applications. Hydroxyapatite (HAp) and HAp/clay nanocomposites have been developed to mimic natural HAp and provide special properties to the biomaterial. The functional groups properties, crystallinity, morphology, and behavior in saline solution and simulated body fluids were analyzed, confirming the potential application of HAp/clay nanocomposites in bone tissue engineering.
SCIENTIFIC REPORTS
(2023)
Article
Acoustics
Nadzeya Brezhneva, Nikolai Dezhkunov, Sviatlana A. Ulasevich, Ekaterina Skorb
Summary: The investigation of cavitation activity during ultrasonic treatment of magnesium particles revealed that the characteristics of cavitation zone may vary depending on the concentration of magnesium particles in the suspension and the nature of the medium. Scanning electron microscopy, X-ray diffraction analysis, and thermal analysis were used to characterize ultrasonically treated magnesium particles, showing the presence of magnesium hydroxide and magnesium hydride in different dispersed media. Furthermore, the incorporation of magnesium hydride in the magnesium matrix was found to be possible by adjusting the conditions of ultrasonic treatment. Additionally, the reactivity of magnesium was confirmed by measuring cavitation activity in various dispersed media.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Ankit Rao, Srinivasan Raghavan
Summary: This work demonstrates the control of deposition of hexagonal boron nitride (h-BN) and achieves a range of deposits through an understanding of the physical chemistry of the ammonia-borane route. By constraining supersaturation and reducing nanocrystalline boron nitride (n-BN) density, clean layers over large areas were achieved. The scalability of the method was proven through successful transfers onto 6 inch square areas and 4 inch wafers. The high mobility achieved by graphene transistors synthesized on these h-BN layers confirms their suitability as 2D electronics substrates.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Analytical
Li -Shang Liu, Jong-Min Kim, Woo-Sik Kim
Summary: A novel strategy utilizing quartz crystal microbalance (QCM) was developed for in situ discrimination of polymorphic nucleation and phase transformation of sulfamerazine (SMZ). Through surface modification with the self-assembled monolayer technique, QCM can selectively detect the formation of two polymorphs and monitor their phase transformation.
ANALYTICA CHIMICA ACTA
(2022)
Review
Metallurgy & Metallurgical Engineering
Changjiang Pan, Xuhui Liu, Qingxiang Hong, Jie Chen, Yuxin Cheng, Qiuyang Zhang, Lingjie Meng, Juan Dai, Zhongmei Yang, Lingren Wang
Summary: Magnesium and its alloy are promising materials for biodegradable vascular stents due to their good mechanical properties and biodegradability. However, their rapid degradation and poor biocompatibility hinder their clinical applications. This paper reviews the recent advances in surface endothelialization of magnesium alloy materials for vascular stents, including bio-inert coating, in-situ immobilization of bioactive molecules, polymer coating with bioactive factors, multifunctional polymer coating, bioactive micropatterns, glycocalyx-like bioactive layer, NO-releasing coating, and bioactive sol-gel coating. The advantages and disadvantages of these strategies are discussed. The future development and prospects of surface endothelialization are also analyzed.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Engineering, Chemical
Lalitha Gnanasekaran, Saravanan Rajendran, Hassan Karimi-Maleh, A. K. Priya, Jiaqian Qin, Matias Soto-Moscoso, Sabah Ansar, Chinna Bathula
Summary: The surface modification of titanium-dioxide semiconductor with V2O5 enhanced its visible light activity for hydrogen generation. This research aimed to achieve visible light activity for hydrogen production through water splitting using the synthesized photocatalyst. The TiO2-V2O5 composite exhibited lower band gap, promoting its photocatalytic activity for hydrogen production.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Zhi-Xin Han, Xiang-Mei Liu, Lei Tan, Zhao-Yang Li, Yu-Feng Zheng, Kelvin Wai-Kwok Yeung, Zhen-Duo Cui, Yan-Qin Liang, Sheng-Li Zhu, Shui-Lin Wu
Summary: A protective coating of hybrid polycaprolactone/indocyanine green was constructed on AZ31 Mg alloy to control its degradation rate through NIR light irradiation. The coating effectively protected the Mg alloy from corrosion, but its corrosion resistance was significantly reduced under NIR light irradiation.
Article
Chemistry, Inorganic & Nuclear
Aysel Kanturk Figen
Summary: The study focused on continuous hydrogen production from sodium borohydride through methanolytic dehydrogenation, achieving continuous H-2 production using semi-continuous regimes. Batch catalytic hydrogen generation profiles were examined and a figure of merit (FOM) was used for comparative analysis of catalysts' performance. The semi-continuous regime resulted in stable hydrogen production for almost 2.6 hours, with a production rate of 0.94 Lh(-1) from Co-O-B catalyzed methanolytic dehydrogenation of NaBH4.
Article
Chemistry, Physical
Bilge Coskuner Filiz
Summary: This study investigated the dehydrogenation kinetics of magnesium hydride in cobalt chloride aqueous solutions, finding that 6.25 wt% CoCl2 was the optimal activator concentration, leading to complete conversion of MgH2 to Mg(OH)(2) at room temperature. The approach was practical for hydrogen generation applications.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Beyza Nur Kinsiz, Bilge Coskuner Filiz, Serpil Kilic Depren, Aysel Kanturk Figen
Summary: This study focused on the preparation of bead type catalysts with rapid and easy recoverable properties for reusability and regeneration during ammonia borane (NH3BH3) hydrolysis. Through nano-casting, cobalt-alginate capsules were used to form surface-active beads containing Co3O4 nanoparticles, resulting in enhanced hydrogen release performance. The catalysts were able to be used for 555 minutes without mechanical damages, and enabled rapid and easy recovery at the end of the reaction for improved reuse.
APPLIED MATERIALS TODAY
(2021)
Article
Chemistry, Physical
Ozge Coskuner, Aysel Kanturk Figen
Summary: This study presents the hydro-catalytic treatment of organoamine boranes for efficient thermal dehydrogenation for hydrogen production. The Co-AC catalyst exhibited efficient catalytic activity towards organoamine boranes thermal dehydrogenation, significantly improving the hydrogen release kinetics. Overall, the hydro and catalytic treatment showed a remarkable synergistic effect in thermal dehydrogenation, enhancing the hydrogen release kinetics.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biochemistry & Molecular Biology
Bilge Coskuner Filiz, Yeliz Basaran Elalmis, Irem Serra Bektas, Aysel Kanturk Figen
Summary: This study successfully designed a stable CS/PVA nanofiber structure for naked-eye colorimetric glucose detection using cost-effective electrospinning technology. The nanofibers exhibited good stability and readability, showing linear glucose analysis response in experiments and achieving significant color changes.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Ozge Coskuner, Carlos A. Castilla-Martinez, Oscar Sonzogni, Eddy Petit, Umit B. Demirci, Aysel Kanturk Figen
Summary: A two-step process has been developed to produce formic acid by hydrogenation of CO2 using sodium borohydride in aqueous solution at ambient conditions. The process aims at capturing and transforming CO2 effectively at ambient conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Ozge Coskuner, Aysel Kanturk Figen
Summary: This study evaluates the semi-continuous regime for hydrogen generation from carbon derivatives of ammonia borane using cobalt-doped activated carbon catalyst. Different carbon derivatives exhibit different hydrogen generation rates due to their varying thermal stability. The kinetic rate and activation energy of the hydrolysis reaction are described using power-law and zero-order kinetic models. After the semi-continuous regime, the catalyst remains stable and no leaching of cobalt species into the exhaust solution is observed, although boron accumulation occurs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Bilge Coskuner Filiz, Aysel Kanturk Figen
Summary: This study aims to develop easily recoverable and regenerated catalysts for efficient hydrogen production from alkyl-substituted amine boranes. The results showed that alkyl-substituted amine boranes exhibited slower hydrogen generation rates compared to ammonia borane in the presence of catalysts. Among the different activated carbon support types, the catalyst supported on granule activated carbon demonstrated the best catalytic performance and recyclability activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Carlos A. CASTILLA-MARTINEZ, Bilge COSKUNER FILIZ, Eddy PETIT, Aysel KANTURK FIGEN, Umit B. DEMIRCI
Summary: Ammonia borane mixed with palladium chloride was used as a reactive solid to trap and convert carbon dioxide, resulting in the formation of various compounds. The study also demonstrated the conversion of CO2 into graphitic carbon.
FRONTIERS OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Hulya Civelek Yoruklu, Bilge Coskuner Filiz, Aysel Kanturk Figen, Bestami Ozkaya
Summary: Nanoparticles (NPs) are used as enhancement additives in biohydrogen production due to their unique features. In this study, the effectiveness and feasibility of NPs in enhancing biohydrogen production over Clostridium sp. were evaluated using the two-stage TOPSIS method. Iron-containing NPs (hematite, magnetite) were determined to be the most effective and economical NPs for increasing the yield.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Electrical & Electronic
Havva Hande Cebeci, Ibrahim Yilmaz, Oender Yargi, Korkut Acikalin, Ali Gelir, Aysel Kanturk Figen
Summary: Upcycling of electronic waste into metal contented pyrolytic carbon (C-WPCB) was achieved through simple pyrolysis, and the obtained C-WPCB was utilized for supercapacitor electrode preparation. The electrode prepared in 1.5 M H2SO4 solution showed the best performance with specific capacitance, specific power, and specific energy of 39.5 F/g, 25.0 kW/kg, and 16.5 Wh/kg at 5 A/g, respectively.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Environmental Sciences
Havva Hande Cebeci, Korkut Acikalin, Aysel Kanturk Figen
Summary: This study aimed to characterize and determine the kinetic parameters of pyrolysis of printed circuit board (PCB) wastes, and analyze the evolved gases at different particle sizes. SEM-EDS, SEM-Mapping, and FTIR were used to examine the structures of PCB wastes. Non-isothermal TG-FTIR analyses were conducted to study the thermal decomposition of PCB wastes, revealing four stages of decomposition with the second stage being the main pyrolysis stage. The apparent activation energies (Ea) for the main pyrolysis stage varied with particle size, contrary to previous studies, and the evolved gas analyses showed that CO2 was the most common emission associated with the decomposition of plastic, brominated compounds, polycarbonate, and epoxy resins in PCB wastes.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2023)
Article
Chemistry, Physical
Hulya Civelek Yoruklu, Bilge Coskuner Filiz, Aysel Kanturk Figen, Bestami Ozkaya
Summary: Enhancing biohydrogen production by adding nano-sized iron oxide doped metal oxides, especially Fe2O3 doped Al2O3, shows great potential.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
