Global Challenges最新文献_第2页

Advancing Economical and Environmentally Conscious Electrification: A Comprehensive Framework for Microgrid Design in Off-Grid Regions 推进经济环保型电气化：离网地区微电网设计综合框架

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-10-13 DOI: 10.1002/gch2.202400169

A M Almas Shahriyar Azad, Zarin Tasnim Oishi, Md. Ariful Islam, Md. Rakibul Islam

{"title":"Advancing Economical and Environmentally Conscious Electrification: A Comprehensive Framework for Microgrid Design in Off-Grid Regions","authors":"A M Almas Shahriyar Azad, Zarin Tasnim Oishi, Md. Ariful Islam, Md. Rakibul Islam","doi":"10.1002/gch2.202400169","DOIUrl":"https://doi.org/10.1002/gch2.202400169","url":null,"abstract":"The design of renewable energy systems traditionally emphasizes life cycle costs, often focusing primarily on emissions rather than a comprehensive life cycle impact assessment. This research proposes a four-tier methodology to balance cost-effectiveness and sustainability in the electrification of remote areas. Tier 1 focuses on understanding the community context by analyzing electrical load profiles, meteorological data, and component specifications for microgrid design. Tier 2 evaluates the feasibility of various systems, optimizing them through cost analysis and Multi-Criteria Decision-Making (MCDM) to rank alternatives. Tier 3 assesses environmental impacts using life cycle assessment, ranking alternatives based on environmental criteria. Tier 4 integrates cost and environmental rankings to determine the most suitable energy configurations, followed by sensitivity analysis to ensure robust decision-making. The methodology is validated through a case study of an unelectrified remote community, demonstrating that the PV-Wind Turbine-Biomass Generator-Converter configuration is the most robust alternative, proving to be the optimal choice in 50% of the analyzed scenarios, achieving a Cost of Energy of 0.213 USD/kWh while minimizing environmental impact across all 18 criteria considered over a 25-year life cycle. This novel framework offers a scalable approach to designing renewable energy systems, enhancing sustainable electrification efforts in developing regions.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"8 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gch2.202400169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Photocatalytic Hydrogen Production Using TiO2-based Catalysts: A Review 使用基于二氧化钛的催化剂进行光催化制氢：综述。

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-10-02 DOI: 10.1002/gch2.202400134

Fahima Bhom, Yusuf Makarfi Isa

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New Insight into Mercury Removal from Fish Meat Using a Single-Component Solution Containing cysteine 利用含半胱氨酸的单组分溶液去除鱼肉中汞的新发现

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-10-02 DOI: 10.1002/gch2.202400161

Przemysław Strachowski, Geeta Mandava, Johan Lundqvist, Romain Bordes, Mehdi Abdollahi

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Kinetic Insights into Methanol Synthesis from CO2 Hydrogenation at Atmospheric Pressure over Intermetallic Pd2Ga Catalyst 金属间钯镓催化剂在常压下氢化二氧化碳合成甲醇的动力学启示

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-09-20 DOI: 10.1002/gch2.202400159

Kaisar Ahmad, Aasif Asharafbhai Dabbawala, Kyriaki Polychronopoulou, Dalaver Anjum, Marko Gacesa, Maguy Abi Jaoude

{"title":"Kinetic Insights into Methanol Synthesis from CO2 Hydrogenation at Atmospheric Pressure over Intermetallic Pd2Ga Catalyst","authors":"Kaisar Ahmad, Aasif Asharafbhai Dabbawala, Kyriaki Polychronopoulou, Dalaver Anjum, Marko Gacesa, Maguy Abi Jaoude","doi":"10.1002/gch2.202400159","DOIUrl":"https://doi.org/10.1002/gch2.202400159","url":null,"abstract":"This study presents a single-site microkinetic model for methanol synthesis by CO2 hydrogenation over intermetallic Pd2Ga/SiO2. A reaction path analysis (RPA) combining theoretical results and realistic catalyst surface reaction data is established to elucidate the reaction mechanism and kinetic models of CO2 hydrogenation to methanol and CO. The RPA leads to the derivation of rate expressions for both reactions without presumptions about the most abundant reactive intermediate (MARI) and rate-determining step (rds). The formation of H2COOH* is found to be the rds (step 19) for methanol synthesis via the formate pathway, with CO2 and H-atoms adsorbed on intermetallic sites as the MARIs. The derived kinetic model is corroborated with experimental data acquired under different reaction conditions, using a lab-scale fixed-bed reactor and Pd2Ga/SiO2 nanoparticles prepared by incipient wetness impregnation. The excellent agreement between the experimental data and the kinetic model (R2 = 0.99) substantiates the proposed mechanism with an activation energy of 61.52 kJ mol-1 for methanol synthesis. The reported catalyst exhibits high selectivity to methanol (96%) at 1 bar, 150 °C, and H2/CO2 ratio of 3:1. These findings provide critical insights to optimize catalysts and processes targeting CO2 hydrogenation at atmospheric pressure and low temperatures for on-demand energy production.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"8 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gch2.202400159","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In Situ Driven Formation of Anatase/Brookite/Rutile Heterojunction N/TiO2 Nanocrystals as Sustainable Visible-Light Catalysts 原位驱动形成作为可持续可见光催化剂的安钠盐/绿柱石/钌异质结 N/TiO2 纳米晶体

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-09-19 DOI: 10.1002/gch2.202400174

Elias Assayehegn, Ananthakumar Solaiappan, Abraha Tadese Gidey, Gebremedhin Gebremariam Gebreegziabher, Tesfamariam Teklu Gebretsadik, Yonas Chebude, Esayas Alemayehu

{"title":"In Situ Driven Formation of Anatase/Brookite/Rutile Heterojunction N/TiO2 Nanocrystals as Sustainable Visible-Light Catalysts","authors":"Elias Assayehegn, Ananthakumar Solaiappan, Abraha Tadese Gidey, Gebremedhin Gebremariam Gebreegziabher, Tesfamariam Teklu Gebretsadik, Yonas Chebude, Esayas Alemayehu","doi":"10.1002/gch2.202400174","DOIUrl":"https://doi.org/10.1002/gch2.202400174","url":null,"abstract":"Visible-light active anatase/brookite/rutile (A/B/R) ternary N-doped titania (N/TiO2) crystals are successfully prepared by a facile sol-gel method using titanium butoxide and benign N-dopant source, guanidinium chloride. Systematically varying the aging time (1, 4, 8, and 12 d), its influence on physicochemical properties of as-obtained spherical heterojunction nanomaterials is studied. Detailed characterizations confirm that a substantial amount of anatase (88% to 50%) is transformed to rutile (2% to 38%) via intermediate brookite phase (9% to 25%) as the function of aging time; not only the A/B/R phase content of the samples is tuned by sol-gel aging time of the precursors solution but also their optical-response and methylene blue photocatalytic properties are profoundly dictated. Notably under visible-light irradiation, the photostable rutile rich mesoporous A/B/R triphasic N/TiO2 (50% A, 12% B, 38% R) aged for 12 d demonstrates higher degradation activity (97%) with a faster degradation rate (0.033 min−1) than both lesser aged N/TiO2 and undoped titania. This enhancement is attributed to the synergistic effect of interstitial-N-doping and optimal A/B/R interfacial charge transfer that leads to higher light absorption, lower bandgap energy and well-separated charge carriers. The current work provides a new perspective for designing highly active visible-light heterostructure nanomaterials with controllable phase composition.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"8 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gch2.202400174","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A Comparative Review on Carbon Nanomaterials and Their Impact on Plant Growth With the Lens of Green Chemistry Principles 以绿色化学原理为视角，比较评述碳纳米材料及其对植物生长的影响

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-09-14 DOI: 10.1002/gch2.202400008

Wei Peng, Peng Li, Muhammad Zia, Shamsul A. Bhuiyan, Yiyi Liu, Dechao Chen, Muyesaier Tudi, Yongsheng Gao, Xuecheng Yan, Yi Jia, Qin Li

{"title":"A Comparative Review on Carbon Nanomaterials and Their Impact on Plant Growth With the Lens of Green Chemistry Principles","authors":"Wei Peng, Peng Li, Muhammad Zia, Shamsul A. Bhuiyan, Yiyi Liu, Dechao Chen, Muyesaier Tudi, Yongsheng Gao, Xuecheng Yan, Yi Jia, Qin Li","doi":"10.1002/gch2.202400008","DOIUrl":"10.1002/gch2.202400008","url":null,"abstract":"Carbon nanomaterials (CNMs), comprising carbon dots, graphene-related materials, and carbon nanotubes, have significant potential for enhancing agricultural productivity. Their compositional compatibility and exceptional properties intrigue a great deal of explorations in agricultural applications, such as fertilizers, pesticides, and regulators of plant growth. However, the evaluation of their agricultural applicability often lacks quantitative sustainability metrics, with insufficient scrutiny on the carbon footprint and scalability of the manufacturing. This review attempts to provide a quantitative ranking system for evaluating the manufacturing processes of the CNMs by applying the twelve principles of Green Chemistry, particularly in the context of agriculture applications. The review also offers a systematically organized account of CNMs' effects on plant systems, encompassing nutrient enhancement, photosynthesis, soil amelioration, disease resistance, and phytotoxicity, which can provide design rationales for the further development of CNMs.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"8 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gch2.202400008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142250644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Urban Lake Health Assessment Based on the Synergistic Perspective of Water Environment and Social Service Functions 基于水环境与社会服务功能协同视角的城市湖泊健康评估

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-09-03 DOI: 10.1002/gch2.202400144

Xueyuan Wang, Yuning Cheng

{"title":"Urban Lake Health Assessment Based on the Synergistic Perspective of Water Environment and Social Service Functions","authors":"Xueyuan Wang, Yuning Cheng","doi":"10.1002/gch2.202400144","DOIUrl":"10.1002/gch2.202400144","url":null,"abstract":"Urban lakes serve as vital ecological and recreational anchors within built environments, essential for enhancing urban resilience. Evaluating lake health predominantly focuses on water quality, assessing indicators such as nutrient levels, toxicity, pH balance, and water clarity to monitor changes. This study proposes a comprehensive evaluation framework that systematically describes specific spatiotemporal manifestations and periodic exogenous regulation characteristics across five dimensions: physical structure, water quality, shoreline dynamics, external regulation, and social service. Furthermore, it introduces an urban lake health assessment model based on synergistic development to evaluate the integrated development and interaction between water environments and social services. This model is applied across urban lakes in various developmental stages in China. Key findings include: 1) Urban development often impacts lake health disparately, with varying degrees of synergy observed between water environments and social services across different urban lakes. However, shifts in urban ideologies and improvements in governance, along with protective policies and project implementations, have contributed to improving water quality to some extent. 2) Engineering interventions do not consistently correspond with improvements in water quality, and governance measures sometimes yield mixed outcomes, underscoring the necessity for systematic solutions to lake health. Restoring hydrological processes emerges as crucial for enhancing sustainability.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"8 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gch2.202400144","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142188250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Irradiating the Path to High-Efficiency Zn-Ion Batteries: An Electrochemical Analysis of Laser-Modified Anodes 辐照通往高效锌离子电池之路：激光修饰阳极的电化学分析

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-08-29 DOI: 10.1002/gch2.202400105

Ramona Durena, Leonid Fedorenko, Nikita Griscenko, Martins Vanags, Liga Orlova, Pavels Onufrijevs, Sandra Stanionyte, Tadas Malinauskas, Anzelms Zukuls

{"title":"Irradiating the Path to High-Efficiency Zn-Ion Batteries: An Electrochemical Analysis of Laser-Modified Anodes","authors":"Ramona Durena, Leonid Fedorenko, Nikita Griscenko, Martins Vanags, Liga Orlova, Pavels Onufrijevs, Sandra Stanionyte, Tadas Malinauskas, Anzelms Zukuls","doi":"10.1002/gch2.202400105","DOIUrl":"10.1002/gch2.202400105","url":null,"abstract":"Global energy consumption is increasing yearly, yet the world is trying to move toward carbon neutrality to mitigate global warming. More research is being done on energy storage devices to advance these efforts. One well-known and widely studied technology is Zn-ion batteries (ZIBs). Therefore, this paper demonstrates how laser irradiation at wavelengths of 266 and 1064 nm, in the presence of air or water, can enhance the electrochemical performance of metallic zinc anode in alkaline electrolyte. The obtained samples are characterized using X-ray diffraction analysis, scanning electron microscopy, and Raman spectroscopy. Then, the electrochemical properties are studied by cyclic voltammetry and impedance measurements. Results indicate that the laser processing of the Zn sample increases surface-specific capacity by up to 30% compared to the non-irradiated Zn sample. Furthermore, electrochemical measurements reveal enhanced participation of metallic Zn grains in the oxidation and reduction processes in irradiated samples. In future research, integrating laser treatment into electrode preparation processes can become essential for optimizing anode battery materials.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"8 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gch2.202400105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142188249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Impact of Lead-Free CsSn0.5Ge0.5I3 Based Perovskite Solar Cells with HTL-Free Incorporation 无铅掺杂 CsSn0.5Ge0.5I3 型包光体太阳能电池的性能影响

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-08-28 DOI: 10.1002/gch2.202400141

Md. Shah Alam, Rawdad Nawer Warda, Omi Akter, Dipta Kumar Das

{"title":"Performance Impact of Lead-Free CsSn0.5Ge0.5I3 Based Perovskite Solar Cells with HTL-Free Incorporation","authors":"Md. Shah Alam, Rawdad Nawer Warda, Omi Akter, Dipta Kumar Das","doi":"10.1002/gch2.202400141","DOIUrl":"10.1002/gch2.202400141","url":null,"abstract":"Lead-containing halide perovskites show promise for solar energy but pose ecological and health risks. To address these, researchers are exploring inorganic binary metal perovskites. This study proposes an eco-friendly, durable hole transport layer (HTL)-free design of CsSn0.5Ge0.5I3 with high power conversion efficiency (PCE). Using the SCAPS-1D simulator, we assessed the efficiency of an HTL-free planar heterojunction, while the Density Functional Theory (DFT)-based CASTEP simulator evaluated the optical properties of CsSn0.5Ge0.5I3 in an orthorhombic structure. Key findings highlight enhanced performance under 100 Wm−2 AM 1.5G illumination by optimizing absorber layer thickness to 800 nm and reducing defect densities in both the perovskite absorber layer and interfaces to 1 × 1014 cm−3.Additonally, the effects of different electron transport materials (ETMs), optimization of electron transport layer (ETL) thickness (30-50 nm), and back contact design improvements were examined. The simulation's results included an increase over the highest values reported in the literature: an open circuit voltage (Voc) of 1.06 V, a short circuit current density (Jsc) of 28.52 mA/cm2, a fill factor (FF) of 86.57%, and a PCE of 26.18% for the FTO/Zn0.875Mg0.125O/CsSn0.5Ge0.5I3/Se perovskite solar cell (PSC). This research provides theoretical insights for developing high-efficiency power modules without HTLs with significant industrial and research potential.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"8 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gch2.202400141","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142188251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IFN-γ and IL-10 Immunosensor with Vertically Aligned Carbon Nanotube Interdigitated Electrodes toward Pen-Side Cattle Paratuberculosis Monitoring 采用垂直排列碳纳米管交错电极的 IFN-γ 和 IL-10 免疫传感器，用于笔边牛副结核病监测

IF 4.4 4区综合性期刊

Global Challenges Pub Date : 2024-08-25 DOI: 10.1002/gch2.202400021

Shaowei Ding, Benjamin J. Brownlee, Kshama Parate, Cicero C. Pola, Bolin Chen, Jesse M. Hostetter, Douglas Jones, John Jackman, Brian D. Iverson, Jonathan C. Claussen

{"title":"IFN-γ and IL-10 Immunosensor with Vertically Aligned Carbon Nanotube Interdigitated Electrodes toward Pen-Side Cattle Paratuberculosis Monitoring","authors":"Shaowei Ding, Benjamin J. Brownlee, Kshama Parate, Cicero C. Pola, Bolin Chen, Jesse M. Hostetter, Douglas Jones, John Jackman, Brian D. Iverson, Jonathan C. Claussen","doi":"10.1002/gch2.202400021","DOIUrl":"https://doi.org/10.1002/gch2.202400021","url":null,"abstract":"Highly sensitive vertically aligned carbon nanotube arrays (VANTAs) interdigitated electrode (IDE) arrays are developed for electrochemical biosensing of two cytokines (i.e., interleukin-10 (IL-10) and interferon-gamma (IFN-γ)) that are useful for early detection Johne's disease (Bovine Paratuberculosis) in cattle. The high aspect ratio VANTA-IDEs (50–60 µm in height) are grown through a chemical vapor deposition process from an iron (Fe) catalyst that is lithographically patterned on a silicon wafer with equal finger width and inter-finger spacing of 25 µm. After functionalization with distinct antibodies the VANTA-IDEs are capable of selective detection of both IL-10 and IFN-γ within an actual biological matrix (i.e., diluted bovine implant supernatant) over concentration ranges of 0.1 to 30 pg mL−1 (limit of detection – LOD: 0.0911 pg mL−1) and 50–500 pg mL−1 (LOD: 24.17 pg mL−1), respectively with a response time of <35 min. Results demonstrate important initial steps for rapid, pen-side identification of cattle with stage-I Mycobacterium avium subspecies paratuberculosis infection before physical symptoms of Johne's disease are present. Such a rapid pen-side diagnostic test can be used on cattle at an auction or before they are introduced to a herd to ensure the larger population does not become infected with Johne's disease.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"8 9","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/gch2.202400021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0