Green Chemistry最新文献_第3页

Efficient decomposition of a melamine–formaldehyde foam into melamine via selective disconnection of bonds†

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-18 DOI: 10.1039/D4GC04481A

Chaohui Yang, Xinyu Li, Hongyan Li, Chizhou Wang, Qianqian Xing, Xiaoliang Jia, Xiaojing Cui, Xianglin Hou and Tiansheng Deng

引用次数: 0

Halogen-bond-assisted radical remote difunctionalization of bicyclo[1.1.1]butane skeletons† 双环[1.1.1]丁烷骨架的卤素键辅助自由基远程双官能化

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-15 DOI: 10.1039/D4GC05166A

Hui Liu, Zhenda Fu, Xingwei Li and Songjie Yu

引用次数: 0

Green aromatic aldehyde production from biomass via catalytic fractionation and ozonolysis† 通过催化分馏和臭氧分解从生物质中生产绿色芳香醛†。

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-15 DOI: 10.1039/D4GC04199B

Tianyu Ren, Peidong Li, Zhuo He, Xinfeng Pan, Yutao Yang, Yuhe Liao, Haiyong Wang, Yanbin Cui and Chenguang Wang

引用次数: 0

A simple, efficient and selective catalyst for closed-loop recycling of PEF in situ towards a circular materials economy approach†

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-14 DOI: 10.1039/D4GC03803G

Shaowei Wu, Lu Li, Lei Song, Guannan Zhou, Lixin Liu, Hailan Kang, Guangyuan Zhou and Rui Wang

{"title":"A simple, efficient and selective catalyst for closed-loop recycling of PEF in situ towards a circular materials economy approach†","authors":"Shaowei Wu, Lu Li, Lei Song, Guannan Zhou, Lixin Liu, Hailan Kang, Guangyuan Zhou and Rui Wang","doi":"10.1039/D4GC03803G","DOIUrl":"https://doi.org/10.1039/D4GC03803G","url":null,"abstract":"Developing plastics from biomass and performing chemical recycling are two essential strategies in circular materials economy. Herein, we present an innovative technique for the closed-loop, in situ chemical recycling of bio-derived poly(ethylene 2,5-furandicarboxylate) (PEF), utilizing the exceptional capabilities of monodisperse nano γ-Ga2O3 with tunable oxygen vacancy density. This framework enables seamless cycling of bio-based plastics from polymerization to de-polymerization and re-polymerization, promoting a sustainable polymer economy. The introduction of oxygen vacancy defects in the structure of gallium oxide, a low toxicity and transparent metal oxide, is considered to be an effective strategy for improving catalytic activity. The polymerization process was controlled by using novel oxygen vacancy-defective Ga2O3, which catalyzed the reaction between bio-based 2,5-furandicarboxylic acid and ethylene glycol to produce high molecular weight PEF. (Mn = 41 kg mol−1). This PEF can then undergo efficient in situ glycolysis, achieving complete de-polymerization under moderate conditions without the need for external catalysts. The glycolysis derivatives of PEF can be directly re-polymerized to polyester rPEF, achieving a significant molecular weight (Mn = 43 kg mol−1) and a remarkable yield (93%). Notably, γ-Ga2O3 with nano oxygen vacancy defects exhibits the ability to selectively de-polymerize PEF within composite material systems containing commercial PET. This research highlights the significant utility of a green catalyst in in situ closed-loop recycling processes.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":" 1","pages":" 179-189"},"PeriodicalIF":9.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DIPEA-induced Si–H activation of siloxane for hydrosilylation polymerization via metal-free photocatalysis† 通过无金属光催化技术实现硅氧烷的 Si-H 活化，从而实现水硅烷化聚合†。

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-13 DOI: 10.1039/D4GC04501G

Hangcen Xie, Rui Xu, Bin Huang, Pingping Lou, Hua-Feng Fei and Zhijie Zhang

{"title":"DIPEA-induced Si–H activation of siloxane for hydrosilylation polymerization via metal-free photocatalysis†","authors":"Hangcen Xie, Rui Xu, Bin Huang, Pingping Lou, Hua-Feng Fei and Zhijie Zhang","doi":"10.1039/D4GC04501G","DOIUrl":"https://doi.org/10.1039/D4GC04501G","url":null,"abstract":"Although metal-free hydrosilylation of siloxanes is essential for the industrial preparation of organosilicon compounds due to its unique advantages, such as the avoidance of the use and residue of precious metals, efficient metal-free silicon hydrogenation reactions are still rare. Herein, we report a straightforward visible light-driven metal-free hydrosilylation reaction based on siloxanes and silicon vinyl groups, catalyzed by the synergistic effect of the organic photooxidation catalyst 2,4,6-tris(diphenylamino)-5-fluoroisophthalonitrile and the base N,N′-diisopropylethylamine, which undergo electron transfer and selectively induce Si–H activation during catalysis. After optimization, the silicon vinyl conversion rate in the hydrosilylation reaction exceeded 99% without using any traditional hydrogen atom transfer reagents. Mechanistic studies based on experimental data and theoretical calculations revealed that the reaction proceeds through a free radical reaction and is thermodynamically feasible. The proposed methodology efficiently affords linear polymer formation via a stepwise growth approach. Furthermore, it can crosslink commercial high-molecular-weight polyvinyl silicone oil with disiloxane, realizing the gelation of the material.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":" 1","pages":" 155-162"},"PeriodicalIF":9.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable pretreatment of blood samples using hydrophobic eutectic solvents to improve the detection of bisphenol A† 使用疏水共晶溶剂对血液样本进行可持续预处理，以改进双酚 A† 的检测

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-13 DOI: 10.1039/D4GC03396E

Cariny Polesca, Helena Passos, Ana C. A. Sousa, Nguyen Minh Tue, João A. P. Coutinho, Tatsuya Kunisue and Mara G. Freire

{"title":"Sustainable pretreatment of blood samples using hydrophobic eutectic solvents to improve the detection of bisphenol A†","authors":"Cariny Polesca, Helena Passos, Ana C. A. Sousa, Nguyen Minh Tue, João A. P. Coutinho, Tatsuya Kunisue and Mara G. Freire","doi":"10.1039/D4GC03396E","DOIUrl":"https://doi.org/10.1039/D4GC03396E","url":null,"abstract":"Bisphenols, and mostly bisphenol A (BPA), are widely used in many consumer products. Due to its toxicity, BPA presents a noteworthy risk to the environment and human health. Despite these concerns, monitoring BPA proves challenging, particularly in highly complex matrices such as blood, because extraction and clean-up require multiple steps, the use of volatile organic solvents, and associated high costs. To overcome these limitations, this work discloses a novel, one-step and sustainable pretreatment technique of blood samples using hydrophobic eutectic solvents (HES). Systems composed of different HES, including thymol : menthol, benzyl alcohol : cyclohexanol, and decanoic acid : trioctylphosphine oxide at various mole ratios, combined with potassium citrate buffer aqueous solutions at different volume ratios, were carefully evaluated as three-phase partitioning (TPP) systems. The high performance of the HES-based systems for the pretreatment of blood samples was confirmed with liquid chromatography–tandem mass spectrometry (LC-MS/MS) analysis, with a BPA recovery of (98 ± 3)% in the HES-rich phase, and with the interfering biological material precipitating at the liquid–liquid interphase. The green nature of the developed method was assessed using the Analytical GREENess Metric (AGREE) and the AGREE metrics of environmental impact of sample preparation (AGREEprep), scoring 0.59 and 0.63, respectively. The high pretreatment performance offered by HES-based TPP systems with respect to blood samples, combined with their greener credentials, paves the way for their application in a variety of biomonitoring studies.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":" 1","pages":" 200-208"},"PeriodicalIF":9.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanoenzymatic hydrolysis of cotton to cellulose nanocrystals†

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-12 DOI: 10.1039/D4GC05113K

Sandra Kaabel, Inge Schlapp-Hackl, Eero Kontturi and Mauri A. Kostiainen

引用次数: 0

Green chemistry startups: some lessons learned

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-12 DOI: 10.1039/D3GC05187K

Jason P. Hallett

{"title":"Green chemistry startups: some lessons learned","authors":"Jason P. Hallett","doi":"10.1039/D3GC05187K","DOIUrl":"https://doi.org/10.1039/D3GC05187K","url":null,"abstract":"There has been an explosive growth in environmentally driven startups in recent years. Much of this has included university spin-outs aiming to translate academic research into commercial practice. This activity dovetails with the principle aim of green chemistry research – improving the sustainability of the chemical and materials industries. However, academics are not always fully aware of the activities, needs, timelines and considerations of startup companies and how these differ from academic research. This can lead to a misunderstanding of whether, when or how to start a cleantech company and what to do once one is formed. Through a careful consideration of the founders, their motivations, the industry, scale and market forces behind an innovation, a business roadmap can be drawn which will help determine whether the technology is appropriate for deployment in the commercial sector. Considerations such as scale-up, cost, capital fundraising needs and teambuilding must all come together as part of the translation journey. Based on lessons learned through my group forming 9 cleantech startups since 2016, I have tried to blend facts, perspective and anecdotes to demonstrate how the green chemistry translation can help us achieve the ultimate goals of the field: sustainable chemical production and a fully decarbonized chemical industry.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":" 2","pages":" 403-412"},"PeriodicalIF":9.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/gc/d3gc05187k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-efficiency green catalytic conversion for waste CS2 by non-noble metal cage-based MOFs: an access pathway to high-value thiazolidine-2-thione† 非贵金属笼基 MOFs 对废弃 CS2 的高效绿色催化转化：获得高价值噻唑烷-2-硫酮†的途径

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-12 DOI: 10.1039/D4GC04541F

Wenyu Ding, Xinyu Tang, Sheng Jin, Zhao Li, Dongwei Xu, Xiaomin Kang and Zhiliang Liu

{"title":"High-efficiency green catalytic conversion for waste CS2 by non-noble metal cage-based MOFs: an access pathway to high-value thiazolidine-2-thione†","authors":"Wenyu Ding, Xinyu Tang, Sheng Jin, Zhao Li, Dongwei Xu, Xiaomin Kang and Zhiliang Liu","doi":"10.1039/D4GC04541F","DOIUrl":"https://doi.org/10.1039/D4GC04541F","url":null,"abstract":"Green and effective disposal of carbon disulfide (CS2) waste into high-valued chemicals under mild conditions is meaningful yet challenging. Herein, a novel 3D cluster-based metal–organic framework (MOF) {(Me2NH2)2[Co3(μ3-O)(XN)(BDC)3]·4DMF·5MeOH}n (compound 1) (XN = 4′-(4-pyridine)4,2′:2′,4′′-terpyridine, H2BDC = terephthalic acid) assembled by [Co15] and [Co18] nano-cages was harvested, presenting excellent stability. Catalytic characterization demonstrated that compound 1 can efficiently promote the cycloaddition reaction of CS2 with aziridines to form sole high-valued thiazolidine-2-thione upon 30 °C and 0.1 MPa for 6 h, which matches well with the atom economy and the sustainable development intention. Noteworthily, compound 1 is the mildest and most efficient catalyst for CS2 treatment and can be reused at least ten times without significant activity degradation; it also retains excellent catalytic capacity in both gram-scale reaction and simulated CS2 waste liquid, which lays a solid foundation for its practical application. Additionally, density functional theory (DFT) calculations further confirm the synergistic effect of the nanocage characteristic and the Me2NH2+ cation, which can significantly reduce the reaction energy barrier in this CS2/aziridine coupling reaction system.","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":" 1","pages":" 218-226"},"PeriodicalIF":9.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multitasking rhodium-catalyzed remote C(sp3)–H functionalization reactions of acyclic dienes to yield benzene-fused heterocycles† 多任务铑催化无环二烯远程 C(sp3)-H 功能化反应生成苯融合杂环†

IF 9.3 1区化学

Green Chemistry Pub Date : 2024-11-08 DOI: 10.1039/D4GC04927F

Yuta Sato, Momoko Nagafuchi, Masaharu Takatsuki, Tsuyoshi Matsuzaki, Takeyuki Suzuki, Makoto Sako and Mitsuhiro Arisawa

引用次数: 0