ChemSusChem最新文献_第7页

Molecular Electrocatalysts in Lithium-Sulfur Batteries. 锂硫电池中的分子电催化剂。

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-25 DOI: 10.1002/cssc.202402006

Zhihua Wang, Junru Ke, Zixin Rui, Li Xu, Gaoran Li, Hua Ji, He Zhu, Si Lan

引用次数: 0

Enhancing Lignin-Carbohydrate Complexes Production and Properties With Machine Learning. 利用机器学习提高木质素-碳水化合物复合物的生产和性能。

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-25 DOI: 10.1002/cssc.202401711

Daryna Diment, Joakim Löfgren, Marie Alopaeus, Matthias Stosiek, MiJung Cho, Chunlin Xu, Michael Hummel, Davide Rigo, Patrick Rinke, Mikhail Balakshin

{"title":"Enhancing Lignin-Carbohydrate Complexes Production and Properties With Machine Learning.","authors":"Daryna Diment, Joakim Löfgren, Marie Alopaeus, Matthias Stosiek, MiJung Cho, Chunlin Xu, Michael Hummel, Davide Rigo, Patrick Rinke, Mikhail Balakshin","doi":"10.1002/cssc.202401711","DOIUrl":"10.1002/cssc.202401711","url":null,"abstract":"Lignin-carbohydrate complexes (LCCs) present a unique opportunity for harnessing the synergy between lignin and carbohydrates for high-value product development. However, producing LCCs in high yields remains a significant challenge. In this study, we address this challenge with a novel approach for the targeted production of LCCs. We optimized the AquaSolv Omni (AqSO) biorefinery for the synthesis of LCCs with high carbohydrate content (up to 60/100 Ar) and high yields (up to 15 wt %) by employing machine learning (ML). Our method significantly improves the yield of LCCs compared to conventional procedures, such as ball milling and enzymatic hydrolysis. The ML approach was pivotal in tuning the biorefinery to achieve the best performance with a limited number of experimental trials. Specifically, we utilized Bayesian Optimization to iteratively gather data and examine the effects of key processing conditions-temperature, process severity, and liquid-to-solid ratio-on yield and carbohydrate content. Through Pareto front analysis, we identified optimal trade-offs between LCC yield and carbohydrate content, discovering extensive regions of processing conditions that produce LCCs with yields of 8-15 wt % and carbohydrate contents ranging from 10-40/100 Ar. To assess the potential of these LCCs for high-value applications, we measured their glass transition temperature (Tg), surface tension, and antioxidant activity. Notably, we found that LCCs with high carbohydrate content generally exhibit low Tg and surface tension. Our biorefinery concept, augmented by ML-guided optimization, represents a significant step toward scalable production of LCCs with tailored properties.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202401711"},"PeriodicalIF":7.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Advances and Challenges in the Development of Immobilized Enzymes for Batch and Flow Biocatalyzed Processes. 用于间歇和流动生物催化过程的固定化酶的开发进展与挑战。

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-25 DOI: 10.1002/cssc.202402007

Stefania Patti, Ilaria Magrini Alunno, Sara Pedroni, Sergio Riva, Erica Elisa Ferrandi, Daniela Monti

{"title":"Advances and Challenges in the Development of Immobilized Enzymes for Batch and Flow Biocatalyzed Processes.","authors":"Stefania Patti, Ilaria Magrini Alunno, Sara Pedroni, Sergio Riva, Erica Elisa Ferrandi, Daniela Monti","doi":"10.1002/cssc.202402007","DOIUrl":"10.1002/cssc.202402007","url":null,"abstract":"The development of immobilized enzymes both for batch and continuous flow biocatalytic processes has gained significant traction in recent years, driven by the need for cost-effective and sustainable production methods in the fine chemicals and pharmaceutical industries. Enzyme immobilization not only enables the recycling of biocatalysts but also streamlines downstream processing, significantly reducing the cost and environmental impact of biotransformations. This review explores recent advancements in enzyme immobilization techniques, covering both carrier-free methods, entrapment strategies and support-based approaches. At this regard, the selection of suitable materials for enzyme immobilization is examined, highlighting the advantages and challenges associated with inorganic, natural, and synthetic organic carriers. Novel opportunities coming from innovative binding strategies, such as genetic fusion technologies, for the preparation of heterogeneous biocatalysts with enhanced activity and stability will be discussed as well. This review underscores the need for ongoing research to address current limitations and optimize immobilization strategies for industrial applications.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202402007"},"PeriodicalIF":7.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Tailoring N and S Heteroatoms Through Rational Design in Carbon Nanotubes-Graphene Composites for Enhanced Zn-Air Battery Performance. 通过合理设计碳纳米管-石墨烯复合材料中的 N 原子和 S 原子异构体，提高锌-空气电池性能。

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-25 DOI: 10.1002/cssc.202401496

José Béjar, Omar De-la-Fuente Valerio, Carlos M Ramos-Castillo, Alfredo Aguilar-Elguezabal, Minerva Guerra-Balcázar, Juan Pablo F Rebolledo-Chávez, Noé Arjona, Lorena Álvarez-Contreras

{"title":"Tailoring N and S Heteroatoms Through Rational Design in Carbon Nanotubes-Graphene Composites for Enhanced Zn-Air Battery Performance.","authors":"José Béjar, Omar De-la-Fuente Valerio, Carlos M Ramos-Castillo, Alfredo Aguilar-Elguezabal, Minerva Guerra-Balcázar, Juan Pablo F Rebolledo-Chávez, Noé Arjona, Lorena Álvarez-Contreras","doi":"10.1002/cssc.202401496","DOIUrl":"10.1002/cssc.202401496","url":null,"abstract":"Cathodic materials significantly influence the performance, durability, and sustainability of primary zinc-air batteries (ZABs). This study focuses on the rational design of highly active metal-free composites by tailoring the content of N and S heteroatoms in carbon nanotube-graphene (CNTG) composites. The oxygen reduction reaction (ORR) tests showed onset potentials (Eo) of 0.88 V (N-CNT) and 0.89 V (N-graphene) for individual materials and 0.92 V for the N-CNTG composite, highlighting the advantage of using a composite materialThe N content varied with dicyandiamide and urea, displaying changes in the surface area and N content (7.09 vs. 5.30 at. %), and in pyridinic and quaternary N species. The N content varied with dicyandiamide and urea, showing changes in the surface area and N content (7.09 vs. 5.30 at. %), and in pyridinic and quaternary N species. The abundance of pyridinic-N species in N-CNTG using urea enabled a higher ORR activity (Eo=0.92 V). The S incorporation through thiourea improved the Eo to 0.94 V (Pt/C=1.03 V). And, the combination of urea and thiourea resulted in a highly active and durable N,S-CNTG material, displaying a Eo of 0.96 V, and an activity loss of 8.7 % (Pt/C=25.4 %) after 2000 cycles. In ZAB mode, this material displayed a voltage of 1.35 V, a power density of 107 mW cm-2, and a specific capacity of 1060 mA h g-1.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202401496"},"PeriodicalIF":7.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Progress in Pyrene-4,5,9,10-Tetraone-Based Organic Electrode Materials for Rechargeable Batteries. 用于充电电池的芘-4,5,9,10-四酮基有机电极材料的研究进展。

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-25 DOI: 10.1002/cssc.202401975

Xiangling Peng, Jingying Guo, Dong Huang, Bo Ouyang, Ya Du, Haishen Yang

{"title":"Progress in Pyrene-4,5,9,10-Tetraone-Based Organic Electrode Materials for Rechargeable Batteries.","authors":"Xiangling Peng, Jingying Guo, Dong Huang, Bo Ouyang, Ya Du, Haishen Yang","doi":"10.1002/cssc.202401975","DOIUrl":"10.1002/cssc.202401975","url":null,"abstract":"Pyrene-4,5,9,10-tetraone (PTO), a coal tar derivative with redox-active ortho-carbonyl groups, has been intensively explored for sustainable organic electrodes due to its remarkably high capacity, superior redox robustness, and versatile cation storage. However, PTO often suffers from poor cycling stability due to its slight solubility in organic electrolytes, thereby causing detrimental shuttle effects and self-discharge behavior, ultimately reducing battery efficiency and lifespan. Its low electrical conductivity also results in poor rate performance. Recently, various strategies have been developed to address these challenges, aiming to enhance battery efficiency, lifespan, and rate performance. In this review, the latest progress in enhancing the performance of PTO-based electrodes and their applications in various battery types is presented. First, a brief discussion is provided on the relationship between the structural characteristics of PTO and its electrochemical performance. Then, approaches to inhibiting the shuttle effect of molecular PTO are outlined and compared. Furthermore, the design and synthesis of PTO-based polymer electrode materials are discussed. Finally, some perspectives and challenges are put forward regarding the performance improvement of PTO-based electrode materials, inspiring further development of not only PTO but also other organic electrode materials in electrochemical energy storage applications.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202401975"},"PeriodicalIF":7.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Cover Feature: Diarylformamides as a Safe Reservoir and Room Temperature Source of Ultra-Pure CO in the Context of a ‘Green’ rWGS Reaction (ChemSusChem 22/2024) 封面专题：二酰甲酰胺作为 "绿色 "rWGS 反应背景下超纯 CO 的安全储备和室温来源（ChemSusChem 22/2024）

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-25 DOI: 10.1002/cssc.202482202

Royel Hurtado, Lisha Lou, Lukas Klerner, Iman Dindarloo Inaloo, Frank W. Heineman, Sjoerd Harder, Günter Schmid, Romano Dorta

引用次数: 0

Bulk Layering Effects of Ag and Cu for Tandem CO₂ Electrolysis. 用于串联二氧化碳电解的银和铜的体层效应。

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-25 DOI: 10.1002/cssc.202401769

Mark Sassenburg, H P Iglesias van Montfort, Nikita Kolobov, Wilson A Smith, Thomas Burdyny

{"title":"Bulk Layering Effects of Ag and Cu for Tandem CO2 Electrolysis.","authors":"Mark Sassenburg, H P Iglesias van Montfort, Nikita Kolobov, Wilson A Smith, Thomas Burdyny","doi":"10.1002/cssc.202401769","DOIUrl":"10.1002/cssc.202401769","url":null,"abstract":"The electrochemical reduction of carbon dioxide (CO2) presents an opportunity to close the carbon cycle and obtain sustainably sourced carbon compounds. In recent years, copper has received widespread attention as the only catalyst capable of meaningfully producing multi-carbon (C2+) species. Notably carbon monoxide (CO) can also be reduced to C2+ compounds on copper, motivating tandem systems that combine copper and CO-producing species, like silver, to enhance overall C2+ selectivities. In this work, we examine the impact of layered-combinations of bulk Cu and Ag by varying the location and proportion of the CO-producing Ag layer. We report an effective increase in the C2+ oxygenate selectivity from 23 % with a 100 nm Cu to 38 % for a 100 : 15 nm Cu : Ag layer. Notably, however, for all co-catalyst cases there is an overproduction of CO vs Cu alone, even for 5 nm Ag layers. Lastly, due to restructuring and interlayer mobility of the copper layer it is clear that the stability of copper limits the locational advantages of such tandem solutions.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202401769"},"PeriodicalIF":7.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Constructing Asymmetric Cu Catalytic Sites for CO₂ Electroreduction with Higher Selectivity to C₂ Products. 构建用于二氧化碳电还原的不对称铜催化位点，提高对 C2 产物的选择性。

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-25 DOI: 10.1002/cssc.202402120

Fanfei Meng, Xiaohui Yao, Jingting He, Jianxia Gu, Wei Li, Chunyi Sun, Xinlong Wang, Zhongmin Su

{"title":"Constructing Asymmetric Cu Catalytic Sites for CO2 Electroreduction with Higher Selectivity to C2 Products.","authors":"Fanfei Meng, Xiaohui Yao, Jingting He, Jianxia Gu, Wei Li, Chunyi Sun, Xinlong Wang, Zhongmin Su","doi":"10.1002/cssc.202402120","DOIUrl":"10.1002/cssc.202402120","url":null,"abstract":"The design of catalytic sites with tunable properties is considered a promising approach to advance the reduction of CO2 into valuable fuels and chemicals, as well as to achieve carbon neutrality. However, significant challenges remain in precisely constructing catalytic sites to adjust target reduction products. In this study, catalysts were derived from metal-organic frameworks (MOFs) with different coordination environments during the electrochemical CO2 reduction reaction (eCO2RR), referred to as Cu-N2O2 and Cu-N2O3, respectively. Higher selectivity towards the production of C2 products was exhibited by the Cu-N2O2-derived catalysts, characterized by asymmetric catalytic centers of Cu0 and Cu+, compared to the Cu-N2O3-derived catalysts, which contained only symmetric catalytic centers of Cu0 sites. This enhanced selectivity is attributed to the synergistic interaction between the Cu0 and Cu+ sites, facilitating the multi-electron transfer process and improving the activation of CO2. This study explores how the coordination environment affects the catalytic performance of catalysts derived from MOFs, providing valuable insights for the development of more effective catalysts aimed at CO2 reduction.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202402120"},"PeriodicalIF":7.5,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Molecular Engineering for Future Thermoelectric Materials: The Role of Electrode and Metal Components in Molecular Junctions. 未来热电材料的分子工程学：分子结中电极和金属成分的作用。

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-24 DOI: 10.1002/cssc.202402077

Jiwoo Park, Sohyun Park

{"title":"Molecular Engineering for Future Thermoelectric Materials: The Role of Electrode and Metal Components in Molecular Junctions.","authors":"Jiwoo Park, Sohyun Park","doi":"10.1002/cssc.202402077","DOIUrl":"https://doi.org/10.1002/cssc.202402077","url":null,"abstract":"As global temperatures increase due to climate change, the accumulation of excess heat on Earth presents a valuable resource that can be harnessed for electricity generation using thermoelectric materials. However, the intricate structures of bulk thermoelectric materials pose significant challenges to their comprehensive understanding and limit performance. Additionally, their relatively high production costs present practical obstacles. A promising solution to these issues lies in molecular control and the use of molecular junctions. Molecules are predicted to surpass the performance of existing bulk materials in energy conversion because they can be chemically tuned to achieve high thermoelectric efficiencies. This review identifies the thermoelectric parameters that affect the performance of molecular junctions. It also explores various experimental platforms for measuring thermoelectric performance from single molecules to assemblies of hundreds of molecules. Finally, it highlights recent advancements in thermoelectric molecular junctions, focusing on the crucial roles of electrodes and metal components within the molecules, such as Ru complexes, metalloporphyrins, metallocenes, conjugated silane wires, and endohedral metallofullerenes. Ultimately, our review provides a comprehensive analysis of strategies to enhance the thermoelectric efficiency of molecular junctions.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202402077"},"PeriodicalIF":7.5,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Covalent Organic Frameworks with Regulated Water Adsorption Sites for Efficient Cooling of Electronics. 具有调节吸水位的共价有机框架，用于高效冷却电子设备。

IF 7.5 2区化学

ChemSusChem Pub Date : 2024-11-23 DOI: 10.1002/cssc.202402441

Jun Zhang, Yong Liu, Yu Hu, Wang-Kang Han, Jia-Xing Fu, Ruo-Meng Zhu, Huan Pang, Jiangwei Zhang, Zhi-Guo Gu

{"title":"Covalent Organic Frameworks with Regulated Water Adsorption Sites for Efficient Cooling of Electronics.","authors":"Jun Zhang, Yong Liu, Yu Hu, Wang-Kang Han, Jia-Xing Fu, Ruo-Meng Zhu, Huan Pang, Jiangwei Zhang, Zhi-Guo Gu","doi":"10.1002/cssc.202402441","DOIUrl":"10.1002/cssc.202402441","url":null,"abstract":"The excessive heat accumulation has been the greatest danger for chips to maintain the computing power. In this paper, a passive thermal management strategy for electronics cooling was developed based on the water vapor desorption process of the covalent organic frameworks (COFs). The precise regulation for the number of carbonyl group and the ratio of hydrophilicity and hydrophobicity within pore channels was achieved by water adsorption sites engineering. In particular, COF-THTA with abundant water adsorption sites exhibited highest water uptake and desorption energy, which facilitate efficient cooling of electronics. In proof-of-concept testing, COF-THTA coating (40×40 mm) provided a temperature drop of 7.5 °C in 25 minutes at a heating power of 937.5 W/m2, and remained stable after 10 intermittent heat cycles. Furthermore, the equivalent enthalpy of COF-THTA coating can reach up to 1136 J/gcoating. In real application scenarios, COF-THTA coating improved the performance of two real computing devices by 26.73 % and 22.61 %, respectively. This strategy based on COFs provides a new thinking for passive thermal management, exhibiting great potential in efficient cooling of electronics.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202402441"},"PeriodicalIF":7.5,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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