Global Challenges最新文献_第7页

Decadal Evolution of Atmospheric Sulfate and Nitrate and Its Potential Link to Energy Restructuring: A Case Study in Guangdong Province, China. 大气硫酸盐和硝酸盐的年代际演变及其与能源结构的潜在联系——以广东省为例

IF 7.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-25 eCollection Date: 2026-04-01 DOI: 10.1002/gch2.70108

Haohao Wang, Qing Chen, Kangan Shu, Jinqing Luo, Liu Yang

{"title":"Decadal Evolution of Atmospheric Sulfate and Nitrate and Its Potential Link to Energy Restructuring: A Case Study in Guangdong Province, China.","authors":"Haohao Wang, Qing Chen, Kangan Shu, Jinqing Luo, Liu Yang","doi":"10.1002/gch2.70108","DOIUrl":"10.1002/gch2.70108","url":null,"abstract":"The global shift toward renewable energy and the wide adoption of electric vehicles (EVs) are expected to mitigate a series of global environmental concerns, while few studies have focused on their contribution to reducing PM2.5 concentrations. This study investigates the temporal evolution of secondary inorganic aerosols (SAIs, sulfate and nitrate) and their gaseous precursors (SO2 and NO2) in Guangdong from 2014 to 2024. By integrating multisource datasets, including air pollutant monitoring, aerosol chemical composition, energy use, and EV statistics, this study quantifies the contributions of coal consumption reduction and clean energy growth to SO2 mitigation, and further examines the association between transportation electrification and NO2 decline. Meanwhile, the changes in the sulfate-to-nitrate ratio and aerosol acidity are also analyzed, highlighting the role of evolving atmospheric chemistry in shaping PM2.5 composition and guiding future emission control strategies.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"10 ","pages":"e70108"},"PeriodicalIF":7.4,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13109783/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147769491","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 : 2026-04-25

引用次数: 0

IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-25

引用次数: 0

IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-24

引用次数: 0

Biobased Random Copolymers From Furandicarboxylic Acid Isomers: Proof of Concept for an Integrated Biorefinery Approach Toward Outstanding Sustainable Food Packaging. 来自呋喃二甲酸异构体的生物基无规共聚物：对杰出可持续食品包装的综合生物精炼方法的概念证明。

IF 7.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-24 eCollection Date: 2026-04-01 DOI: 10.1002/gch2.202600003

Enrico Bianchi, Giulia Guidotti, Michelina Soccio, Valentina Siracusa, Shanmugam Thiyagarajan, Nadia Lotti

{"title":"Biobased Random Copolymers From Furandicarboxylic Acid Isomers: Proof of Concept for an Integrated Biorefinery Approach Toward Outstanding Sustainable Food Packaging.","authors":"Enrico Bianchi, Giulia Guidotti, Michelina Soccio, Valentina Siracusa, Shanmugam Thiyagarajan, Nadia Lotti","doi":"10.1002/gch2.202600003","DOIUrl":"10.1002/gch2.202600003","url":null,"abstract":"This work explored the industrial potential of an alternative green synthetic route to obtain 2,5-furandicarboxylic acid (2,5-FDCA) via a Henkel-type disproportionation reaction developed by Thiyagarajan et al., meant to produce furan, and up to 30% of 2,4-furandicarboxylic acid (2,4-FDCA), a structural isomer of 2,5-FDCA. Linear glycols were combined with FDCA isomers from the Henkel-type reaction to synthesize three fully biobased random copolymers: 2,5-2,4-PTF, 2,5-2,4-PBF, 2,5-2,4-PHF. These copolymers were compression molded and subjected to NMR, viscometry, WAXS, DSC, and TGA analyses. Evidence suggested the formation of a partially ordered phase in 2,5-2,4-PHF. Mechanical and gas barrier properties of the synthesized copolymers were remarkably superior to the ones of both the reference homopolymers, with increased toughness, elongation at break and resistance to humidity. Interestingly, humidity improved the gas barrier performance of 2,5-2,4-PBF, making it impermeable to CO2. These findings highlighted the potential of these furan-based copolyesters for the production of mono-material, potentially recyclable, and sustainable food packaging. These achievements represented promising proof of concept for an integrated biorefinery and polymerization process, designed to: 1) Completely avoid the use of solvents; 2) Start from second-generation biomass; 3) Have high carbon efficiency and few purification steps.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"10 ","pages":"e00003"},"PeriodicalIF":7.4,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13107169/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147769465","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 : 2026-04-24

引用次数: 0

Recent Advances in the Fabrication of Structural Nanocellulose-Loaded Functionalized Biochar-Based Biopolymeric Nanocomposites for Industrial Wastewater Treatment by Continuous Adsorption With Modeling: A Cutting-Edge Review. 结构纳米纤维素负载功能化生物炭基生物聚合物纳米复合材料的制备及其连续吸附处理工业废水的研究进展

IF 7.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-24 eCollection Date: 2026-04-01 DOI: 10.1002/gch2.70107

Md Mahmudur Rahman, M Mohinur Rahman Rabby, G M Musfiq Ismam, Md Khalid Al Zuhanee, Salah Knani, Reem Alreshidi, Faisal Ahmed Naiem

{"title":"Recent Advances in the Fabrication of Structural Nanocellulose-Loaded Functionalized Biochar-Based Biopolymeric Nanocomposites for Industrial Wastewater Treatment by Continuous Adsorption With Modeling: A Cutting-Edge Review.","authors":"Md Mahmudur Rahman, M Mohinur Rahman Rabby, G M Musfiq Ismam, Md Khalid Al Zuhanee, Salah Knani, Reem Alreshidi, Faisal Ahmed Naiem","doi":"10.1002/gch2.70107","DOIUrl":"10.1002/gch2.70107","url":null,"abstract":"Production of multifunctional bionanoadsorbents from agrowaste/plant biomass-derived CNC/FBC by developing an economic/environmentally friendly technology for bulk-scale wastewater treatment is a critical issue. Every moment, a massive amount of hazardous effluent is expelled from several large/medium/small-scale industries directly into the environment, which can destroy the ecological balance/public security. Hence, in this overview, several advanced production techniques have been proposed addressing the effective fabrication of CNC-FBC-based bionanoadsorbents that could be beneficial in wastewater treatment for their outstanding properties, structural purity, and upgradation. Moreover, numerous potential characterization techniques, beneficial mode of application, and synergistic mechanism including chemical adsorption due to strong interaction, both monolayer/multi-layer physical adsorption due to weak interaction, interparticular diffusion/deep penetration due to higher surface area, mesoporous microstructure with pore tube/canal of the considered bionanocomposites have been suggested for a better understanding about the scope, significance, applicability, and selectivity. However, the CNC-FBC bionanocomposites could be more selective and beneficial than others because of their low cost, higher efficiency, greater stability, structural purity, highly dense binding sites, negative surface charge, and reusability. This review also offers the modification techniques and mathematical modeling for enhanced prediction of the experimental BTC curve and actual route adsorption by detecting the reaction kinetics/thermodynamics/isotherms and energy interpretation.","PeriodicalId":12646,"journal":{"name":"Global Challenges","volume":"10 ","pages":"e70107"},"PeriodicalIF":7.4,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13107170/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147769523","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

IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-24

引用次数: 0

IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-24

引用次数: 0

IF 6.4 4区综合性期刊

Global Challenges Pub Date : 2026-04-24

引用次数: 0