Global Challenges最新文献_第6页

IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-05-07

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IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-05-07

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Shape-Customizable 3D Corn Husk-Derived Carbon Evaporator for High-Performance Solar Desalination. 形状可定制的3D玉米壳衍生碳蒸发器，用于高性能太阳能脱盐。

IF 7.4 4区综合性期刊

Global Challenges Pub Date : 2026-05-07 eCollection Date: 2026-05-01 DOI: 10.1002/gch2.202600002

Xidong Suo, Yufan Yan, Jiayu Mu, Kaiyan Hao, Xintong Yu, Hongtao Qiao, Jie Yang

{"title":"Shape-Customizable 3D Corn Husk-Derived Carbon Evaporator for High-Performance Solar Desalination.","authors":"Xidong Suo, Yufan Yan, Jiayu Mu, Kaiyan Hao, Xintong Yu, Hongtao Qiao, Jie Yang","doi":"10.1002/gch2.202600002","DOIUrl":"10.1002/gch2.202600002","url":null,"abstract":"Currently, 3D interfacial evaporators have attracted significant attention due to their superior evaporation performance. However, the shape of carbon-based 3D evaporators is often constrained by the original form of biomass materials, which limits their practical applications. Herein, we report a novel strategy for fabricating 3D solar-driven interfacial evaporators with arbitrary shapes (hemisphere, cone, flake, and Z-type) by integrating carbon powder derived from corn shuck (CS) with binders. The silver-doped corn-based carbon (Ag-CCS) material exhibits exceptional photothermal conversion efficiency, achieving surface temperatures of 153.3°C (dry) and 95.7°C (wet) under 1 sun illumination. Among the 3D evaporators, the Z-type design demonstrates the highest evaporation rate of 4.42 kg·m-2 h-1, attributed to its porous structure, hydrophilicity, low evaporation enthalpy of adsorbed water (1286.13 J g-1), and efficient ambient energy absorption and thermal management. Outdoor experiments further validate the Z-type evaporator's superior performance, with a maximum daily water production of 25.1 kg m-2 and automatic salt-cleaning capability over 20 days. This work paves the way for the scalable fabrication of 3D carbon-based evaporators, offering a viable solution for seawater desalination.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"10 ","pages":"e00002"},"PeriodicalIF":7.4,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13150476/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147868085","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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Decarbonization at What Cost? Assessing the Agricultural Economic Impact of Mitigation Policy: Evidence From Net-Zero Targets. 脱碳的代价是什么？评估缓解政策的农业经济影响：来自净零目标的证据。

IF 7.4 4区综合性期刊

Global Challenges Pub Date : 2026-05-07 eCollection Date: 2026-05-01 DOI: 10.1002/gch2.70111

Yu Lai, Zhaopu Liu, Mingen Zhao, Cheng Zhang, Yuchun Zhu

{"title":"Decarbonization at What Cost? Assessing the Agricultural Economic Impact of Mitigation Policy: Evidence From Net-Zero Targets.","authors":"Yu Lai, Zhaopu Liu, Mingen Zhao, Cheng Zhang, Yuchun Zhu","doi":"10.1002/gch2.70111","DOIUrl":"10.1002/gch2.70111","url":null,"abstract":"Typically, the effectiveness of mitigation policy is assessed jointly across environmental, economic, and social dimensions. Agriculture is recognized as the most climate-sensitive industry and three-quarters of the global poor depend on agriculture for their livelihoods. Hence, employing net-zero targets for 143 nations as a novel angle, this study designed a multi-period difference-in-differences model to assess this statement, with a particular focus on its agricultural economic impact. Results indicated that mitigation policy is expected to reduce agricultural output value by 7.9% and the magnitude of emission reduction is nearly half that of output reduction. This finding implies that decarbonization is not merely a sacrifice of agricultural output, but may lead to its destruction. Moreover, mitigation policy exhibits a statistically significant negative impact on no poverty. Notably, observed output losses is primarily attributed to stagnant mitigation technology. Fortunately, this study identified that the output-enhancing effect of adaptation policy can largely compensate for these losses. To achieve a sustainable future, global entities must collectively optimize the deployment of climate action across multiple fronts to practically enhance the effectiveness of mitigation policy.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"10 ","pages":"e70111"},"PeriodicalIF":7.4,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13150691/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147868054","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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IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-29

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Advanced Nuclear Energy Pathways for a Net-Zero World: Fuel Cycles, Reactors, and Policy Readiness. 迈向零净世界的先进核能之路：燃料循环、反应堆和政策准备。

IF 7.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-29 eCollection Date: 2026-05-01 DOI: 10.1002/gch2.70110

Reda A Haggam, Ravikumar Jayabal, Sekar S, Manikandan Ayyar, Manzoore Elahi M Soudagar, Santhamoorthy M, Saravanan Rajendran, Shanmugapriya D, Rajkumar Sivanraju

{"title":"Advanced Nuclear Energy Pathways for a Net-Zero World: Fuel Cycles, Reactors, and Policy Readiness.","authors":"Reda A Haggam, Ravikumar Jayabal, Sekar S, Manikandan Ayyar, Manzoore Elahi M Soudagar, Santhamoorthy M, Saravanan Rajendran, Shanmugapriya D, Rajkumar Sivanraju","doi":"10.1002/gch2.70110","DOIUrl":"10.1002/gch2.70110","url":null,"abstract":"This review examines the contributions of alternative nuclear fuels and advanced reactor technologies to enhancing the sustainability, safety, and resource efficiency of nuclear energy systems during the transition to a low-carbon future. A thorough synthesis of the existing literature was undertaken, with an emphasis on Thorium-based fuels, uranium-233, minor actinides, and innovative reactor configurations encompassing molten salt reactors (MSRs), small modular reactors (SMRs), and fast breeder reactors (FBRs). The investigation integrates various dimensions, including technical performance metrics, fuel cycle attributes, environmental ramifications, and pertinent global policy frameworks. MSRs exhibit thermal efficiencies exceeding 45% while incorporating online reprocessing capabilities, whereas SMRs provide advantages in modular deployment and intrinsic safety features. FBRs facilitate closed fuel cycles and the transmutation of long-lived isotopes. Lifecycle emissions consistently remain below 12-20 gCO2e/kWh. Empirical case studies from India, China, and the United States substantiate this field's technical readiness and regulatory progress. Advanced fuel compositions and reactor systems offer a plausible trajectory toward sustainable nuclear energy. The achievement of this potential is contingent upon the evolution of contemporary regulatory frameworks, active public engagement, and adequate financial mechanisms. Integrating technology, policy, and public trust is essential to making nuclear energy a key pillar of global decarbonization.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"10 ","pages":"e70110"},"PeriodicalIF":7.4,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13128538/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147814064","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

Simultaneous Laser Reduction of Sn/Sb Salts and Graphene Formation as Innovative Anode Material for Li- and Na-Ion Batteries. 激光同时还原Sn/Sb盐和石墨烯形成作为Li和na离子电池的创新负极材料。

IF 7.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-29 eCollection Date: 2026-05-01 DOI: 10.1002/gch2.202500356

Vincenzo Vezzoni, Michele Setti, Giacomo Magnani, Laura Fornasini, Silvio Scaravonati, Alessia Rinaldi, Niyaz Ahmad, Lorenzo Pasetti, Danilo Bersani, Giovanni Bertoni, Michele Sidoli, Gioele Genovese, Mauro Riccò, Daniele Pontiroli

{"title":"Simultaneous Laser Reduction of Sn/Sb Salts and Graphene Formation as Innovative Anode Material for Li- and Na-Ion Batteries.","authors":"Vincenzo Vezzoni, Michele Setti, Giacomo Magnani, Laura Fornasini, Silvio Scaravonati, Alessia Rinaldi, Niyaz Ahmad, Lorenzo Pasetti, Danilo Bersani, Giovanni Bertoni, Michele Sidoli, Gioele Genovese, Mauro Riccò, Daniele Pontiroli","doi":"10.1002/gch2.202500356","DOIUrl":"10.1002/gch2.202500356","url":null,"abstract":"The increasing demand for portable electronics and electric vehicles has made the development of advanced electrochemical energy storage systems essential. Lithium-ion batteries (LIBs), which predominantly use graphite anodes, face limitations in capacity and performance at high current rates. As a result, alternative anode materials such as tin (Sn) and antimony (Sb) have gained attention for both LIBs and sodium-ion batteries (SIBs) as well, due to their high theoretical capacity. However, their practical application is hindered by significant volume expansion during cycling, leading to electrode degradation. This study presents a novel approach to improve the stability and performance of Sn and Sb anodes by incorporating them into a laser-induced graphene (LIG) matrix. LIG was synthesized via laser ablation of a polyimide precursor mixed with metal-salt precursors, directly onto a copper current collector, enabling the in situ formation of Sn and Sb metallic nanoparticles (NPs) and SnSb alloy NPs, embedded in a few graphene layers. The localized high-temperature generated by the laser facilitated nanoparticle formation while simultaneously creating a protective carbon shell around the NPs, mitigating volume expansion and enhancing electrochemical stability. Electrochemical testing demonstrated that the LIG-metal composites exhibited superior performance compared to bare LIG in both LIB and SIB. LIG-Sn composite achieved the specific capacity of 380 mAh g-1 in LIBs and 155 mAh g-1 in SIBs after 80 and 50 cycles, respectively. These results highlight the potential of LIG-based Sn and Sb composites as scalable, binder-free anode materials for next-generation rechargeable batteries.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"10 ","pages":"e00356"},"PeriodicalIF":7.4,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13128972/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147814073","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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IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-29

引用次数: 0

IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-29

引用次数: 0

IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-25

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