Advanced Sustainable Systems最新文献

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Green Flame Retardants for Sustainable Polymers with Promising Multi-Functionalities: A Next-Generation Approach 绿色阻燃剂的可持续发展,具有前景的多功能聚合物:新一代方法
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-03 DOI: 10.1002/adsu.202500162
Chanchal Kumar Kundu, Rujun Yu, Bin Fei
{"title":"Green Flame Retardants for Sustainable Polymers with Promising Multi-Functionalities: A Next-Generation Approach","authors":"Chanchal Kumar Kundu,&nbsp;Rujun Yu,&nbsp;Bin Fei","doi":"10.1002/adsu.202500162","DOIUrl":"https://doi.org/10.1002/adsu.202500162","url":null,"abstract":"<p>The global flame retardant industry is transforming significantly, shifting from petroleum-based products to environmentally friendly alternatives derived from renewable natural sources. This transition aligns with the growing emphasis on sustainability and the development of biodegradable polymers aimed at mitigating the negative impacts of nonrenewable substrates. Consequently, the innovation of green flame retardants and sustainable polymer materials has emerged as a pivotal research area within the scientific community. This review synthesizes recent advancements in this field, focusing on the application of green flame retardants sourced from plants, animals, and microorganisms in biodegradable polymer substrates, such as textiles and plastics. Their performance, mechanisms of action, and additional functionalities beyond flame inhibition are examined. Furthermore, the inherent limitations of these bio-derived compounds are discussed, which warrant further investigation to fully realize their potential. This review aims to provide a comprehensive overview of current developments and future directions in the pursuit of sustainable flame retardant solutions.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tailoring the Phenol Adsorption on Pt@TiO2 to Improve Electrocatalytic Hydrogenation Performance via Metal-Support Interaction 调整苯酚吸附Pt@TiO2通过金属-载体相互作用提高电催化加氢性能
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-02 DOI: 10.1002/adsu.202500422
XiaoLan Chen, Xuejun Liu, Xiaoli Yang, Yan Qi, Yue Wang, Junwei Sun, Fenhong Zhao, Lixue Zhang
{"title":"Tailoring the Phenol Adsorption on Pt@TiO2 to Improve Electrocatalytic Hydrogenation Performance via Metal-Support Interaction","authors":"XiaoLan Chen,&nbsp;Xuejun Liu,&nbsp;Xiaoli Yang,&nbsp;Yan Qi,&nbsp;Yue Wang,&nbsp;Junwei Sun,&nbsp;Fenhong Zhao,&nbsp;Lixue Zhang","doi":"10.1002/adsu.202500422","DOIUrl":"https://doi.org/10.1002/adsu.202500422","url":null,"abstract":"<p>Electrocatalytic hydrogenation (ECH) of biomass-derived phenolic compounds emerges as a burgeoning avenue to upgrade lignocellulosic bio-oil to value-added chemicals, necessitating the exploration of active and selective ECH electrocatalysts. Up to now the mostly explored catalysts applied to ECH are mainly based on Pt, yet the faradaic efficiency (FE) of Pt-catalyzed ECH of phenolic compounds remains relatively low, owing to the competitive hydrogen evolution reaction (HER). Herein, highly dispersed Pt nanoparticles supported on rutile TiO<sub>2</sub> nanowires substrate (Pt@TiO<sub>2</sub>) is elaborately constructed to regulate the electronic structure of active Pt species through metal-support interaction. The oxygen vacancy-rich TiO<sub>2</sub> nanowire is conducive to the anchoring of Pt, thus preventing the aggregation of small-sized Pt nanoparticles, while the interaction between Pt nanoparticles and TiO<sub>2</sub> support stimulates the electrons transfer from TiO<sub>2</sub> to Pt, enhances the adsorption of phenol and maximizes the hydrogen utilization toward ECH rather than recombination to trigger HER. As a result, the optimized Pt@TiO<sub>2</sub> electrocatalysts exhibit excellent electrocatalytic performance for phenol ECH to cyclohexanol with a high selectivity of 93% and appealing FE of 57%. Density functional theory calculations further confirm the optimization of interfacial electronic structure, thus evidently promoting reactants absorption and activation on the Pt@TiO<sub>2</sub>.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scalable Plasma-Processed NiMo Electrocatalysts for Efficient Hydrogen Evolution: Enhancement of Catalytic Efficiency through Plasma Surface Modification 高效析氢的可扩展等离子体处理NiMo电催化剂:通过等离子体表面改性提高催化效率
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-02 DOI: 10.1002/adsu.202500586
Bharani Narayanan, Vijay Dhanabal M. H., Shanmugavelayutham Gurusamy
{"title":"Scalable Plasma-Processed NiMo Electrocatalysts for Efficient Hydrogen Evolution: Enhancement of Catalytic Efficiency through Plasma Surface Modification","authors":"Bharani Narayanan,&nbsp;Vijay Dhanabal M. H.,&nbsp;Shanmugavelayutham Gurusamy","doi":"10.1002/adsu.202500586","DOIUrl":"https://doi.org/10.1002/adsu.202500586","url":null,"abstract":"<p>Given the rising global energy demands and environmental concerns, developing efficient, non-hazardous methods for producing electrocatalysts is crucial. The challenge lies not only in enhancing catalyst performance but also in finding scalable, cost-effective techniques for large-scale production. Plasma technologies, with their adaptability and versatility in energy conversion and storage, have garnered significant attention. These chemical-free methods provide precise control over material properties and enable the fabrication of high-performance electrocatalysts in a single step. In this work, plasma technology is leveraged to fabricate a durable, high-performance NiMo electrocatalyst in varying ratios (3:1, 3:2, 3:3) for the hydrogen evolution reaction (HER) using atmospheric plasma spray. The NiMo(3:3) composition demonstrates superior catalytic performance with an overpotential of 112 mV at a current density of 20 mA cm<sup>−2</sup>. Further, Low-pressure nitrogen plasma treatment for 15 minutes significantly reduces the overpotential to 78 mV, enhancing HER performance by altering surface properties and boosting active site exposure. The catalyst also shows a lower Tafel value of 57.16 mV dec<sup>−1</sup> and high stability in chronoamperometry under acidic conditions for 30 hours, proving its sustainability in harsh environments. This work provides solid evidence of plasma's suitability as a powerful and sustainable approach for fabricating advanced electrocatalysts in energy applications</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact Assessment and Evaluation of Micro(nano)plastics Exposure in the Human Health System: A Review 微(纳)塑料暴露对人体健康系统的影响评估与评价综述
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-02 DOI: 10.1002/adsu.202500143
P. Parthipan, V. Sathish, A. Rajasekar, A.S. Vickram, S. Thanigaivel, R. Subbaiya, N. Karmegam, Woong Kim, M. Govarthanan, Kamala-Kannan Seralathan
{"title":"Impact Assessment and Evaluation of Micro(nano)plastics Exposure in the Human Health System: A Review","authors":"P. Parthipan,&nbsp;V. Sathish,&nbsp;A. Rajasekar,&nbsp;A.S. Vickram,&nbsp;S. Thanigaivel,&nbsp;R. Subbaiya,&nbsp;N. Karmegam,&nbsp;Woong Kim,&nbsp;M. Govarthanan,&nbsp;Kamala-Kannan Seralathan","doi":"10.1002/adsu.202500143","DOIUrl":"https://doi.org/10.1002/adsu.202500143","url":null,"abstract":"<p>The formation of micro and nano plastics (MNPs) and their exposure to the environment and human health system are new global problems currently being studied by scientific communities. MNPs can enter the body of a person in several ways, such as through the skin, ingestion, respiration, seafood, packed food materials, water, air, and cosmetics. Organ and tissue damage may result from the reactive oxygen species imbalance. The prolonged exposure of human health to plastics and polymer additives leads to asthma, bronchitis, pneumonia, and other respiratory problems. This review analyzes the problems associated with humans and animals due to the exposure of MNPs and focuses on their impacts due to biomagnification through various biological and chemical functions. A deeper comprehension of cellular and molecular level reactions of MNP contamination to the associated environment is also discussed in this review.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Data-Driven Lithium Salt Design for Long-Cycle Lithium Metal Battery 数据驱动的长周期锂金属电池锂盐设计
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-02 DOI: 10.1002/adsu.202500413
Un Hwan Lee, Kyungju Nam, Seung Hyo Noh, Donghwi Kim, Joonhee Kang
{"title":"Data-Driven Lithium Salt Design for Long-Cycle Lithium Metal Battery","authors":"Un Hwan Lee,&nbsp;Kyungju Nam,&nbsp;Seung Hyo Noh,&nbsp;Donghwi Kim,&nbsp;Joonhee Kang","doi":"10.1002/adsu.202500413","DOIUrl":"https://doi.org/10.1002/adsu.202500413","url":null,"abstract":"<p>The development of high-performance electrolytes for lithium metal batteries (LMBs) is hindered by time-intensive experimental characterization. Here, a data-driven predictive model is presented to estimate Coulombic efficiency (CE) and lithium metal thickness evolution using electrolyte composition and density functional theory (DFT)-derived descriptors. By analyzing 21 lithium salts, key computational parameters, including LUMO energy levels, are extracted from lithium oxidation states, and adsorption energies. Machine learning models, particularly XGBoost and random forest, achieve high predictive accuracy, reducing mean squared error by over 50% compared to structural-only models. Linear regression reveals that higher LUMO values and lower lithium oxidation states correlate with improved CE, guiding the selection of LiDFP, LiNO<sub>3</sub>, LiPDI, and LiHDI as promising additives to LiFSI. While constrained by limited SEI characterization and dataset size, this study establishes a computational framework for electrolyte optimization, accelerating LMB development and cycle life enhancement.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adsu.202500413","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating Enhanced Ethanol Selectivity on Sulfurized Au@Ag NPs for CO2 Electroreduction by Operando EC-SERS 利用Operando EC-SERS研究硫化Au@Ag NPs对CO2电还原乙醇选择性的增强
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-02 DOI: 10.1002/adsu.202500462
Xingbiao Liu, Canjun Zou, Wei Tang, Chengyu Zhang, Jingjing Li, Ping-Ping Fang
{"title":"Investigating Enhanced Ethanol Selectivity on Sulfurized Au@Ag NPs for CO2 Electroreduction by Operando EC-SERS","authors":"Xingbiao Liu,&nbsp;Canjun Zou,&nbsp;Wei Tang,&nbsp;Chengyu Zhang,&nbsp;Jingjing Li,&nbsp;Ping-Ping Fang","doi":"10.1002/adsu.202500462","DOIUrl":"https://doi.org/10.1002/adsu.202500462","url":null,"abstract":"<p>Electrochemical CO<sub>2</sub> reduction powered by sustainable electricity is a strategic pathway for energy conversion and Carbon Neutrality. However, it is still difficult to achieve CO<sub>2</sub> conversion to C<sub>2+</sub> products such as ethanol with high selectivity by electroreduction, while investigating the mechanisms is even difficult. Herein, the enhanced ethanol selectivity on the sulfurized Au core Ag shell nanoparticles (Au@Ag-S NPs) for CO<sub>2</sub> electroreduction by operando electrochemical surface enhanced Raman spectroscopy (EC-SERS) is investigated. A high ethanol Faradaic efficiency (FE) of 60% is achieved at a high potential of −0.75 V versus reversible hydrogen electrode (RHE) on Au@Ag-S NPs for CO<sub>2</sub> electroreduction. The electron transfer from Au core to Ag shell at the Au@Ag-S NPs interface is proved by X-ray photoelectron spectroscopy (XPS), which facilitates the CO<sub>2</sub> electroreduction to ethanol. Operando EC-SERS provides convincing spectral evidence of the *CO intermediates adsorbed and interface water at the surface of Au@Ag-S NPs, which facilitates subsequent CO-CO coupling and the formation of ethanol. Density functional theory (DFT) found that ethanol production at the Au@Ag-S interface is facilitated by the reduced energy barrier of CO-CO coupling following the sulfurization of Au@Ag NPs. This research provides a practical approach to the efficient design of highly selective catalysts for CO<sub>2</sub> electroreduction to ethanol.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Decoding the Role of Metal-Oxide Interactions in Hydrogen Optimization through Oxidative Steam Reforming of Ethanol (OSRE) 通过乙醇氧化蒸汽重整(OSRE)解读金属-氧化物相互作用在氢优化中的作用
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-02 DOI: 10.1002/adsu.202401067
César Rodríguez, Sonia Moreno, Rafael Molina
{"title":"Decoding the Role of Metal-Oxide Interactions in Hydrogen Optimization through Oxidative Steam Reforming of Ethanol (OSRE)","authors":"César Rodríguez,&nbsp;Sonia Moreno,&nbsp;Rafael Molina","doi":"10.1002/adsu.202401067","DOIUrl":"https://doi.org/10.1002/adsu.202401067","url":null,"abstract":"<p>This study explores the influence of metal-oxidic matrix interactions in hydrotalcite-type structures, achieved through the isomorphic substitution of NiCo, to enhance catalytic performance in the oxidative steam reforming of ethanol (OSRE). By modulating key properties: i) crystalline structure, ii) bimetallic phase dispersion, iii) basic site density, and iv) reducibility, a correlation with catalytic activity is established. Prereduction at 600 °C revealed that increasing NiCo content promotes partial reduction, which intensifies as metal-matrix interactions weaken, at the expense of basic sites. CO chemisorption experiments confirmed the presence of both semi-oxidized (M<sup>n+</sup>) and reduced (M<sup>0</sup>) metal states, with smaller active-phase loadings favoring highly dispersed particles rich in M<sup>n+</sup>. These particles exhibited strong interfacial interactions that resisted full metal reduction. Optimal catalytic performance is achieved with 20–30 wt.% NiCo, with an optimal amount of M<sup>0</sup>/M<sup>n+</sup>, yielding complete ethanol conversion and 60% selectivity to H<sub>2</sub> at 400 °C, as validated by DRIFT and GC analyses. Post-reaction characterizations highlighted the formation of carbonaceous deposits, which are mitigated by small particle sizes and a high O<sub>II</sub>/O<sub>I</sub> ratio, as determined by XPS. These findings provide a roadmap for tailoring catalytic systems to maximize efficiency in OSRE applications.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding the Role of Hydroxyl Functionalization in Linear Poly(Ethylenimine) for Oxidation-Resistant Direct Air Capture of CO2 了解羟基功能化在线性聚亚胺抗氧化直接空气捕集CO2中的作用
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-01 DOI: 10.1002/adsu.202400960
Anthony J. Varni, Lucas S. Thigpen, Marcos F. Calegari Andrade, Maxwell A. T. Marple, Elwin Hunter-Sellars, Amitesh Maiti, Sichi Li, Simon H. Pang
{"title":"Understanding the Role of Hydroxyl Functionalization in Linear Poly(Ethylenimine) for Oxidation-Resistant Direct Air Capture of CO2","authors":"Anthony J. Varni,&nbsp;Lucas S. Thigpen,&nbsp;Marcos F. Calegari Andrade,&nbsp;Maxwell A. T. Marple,&nbsp;Elwin Hunter-Sellars,&nbsp;Amitesh Maiti,&nbsp;Sichi Li,&nbsp;Simon H. Pang","doi":"10.1002/adsu.202400960","DOIUrl":"10.1002/adsu.202400960","url":null,"abstract":"<p>Aminopolymer-based adsorbents are a prominent class of materials being used for direct air capture of CO<sub>2</sub> at the industrial scale. However, improving their working lifetime, specifically by increasing their resilience to oxidative degradation, remains an ongoing challenge. Toward this end, functionalization of aminopolymers with non-amine functionalities such as hydroxyls has emerged in recent years as a promising strategy toward improving adsorbent lifetime. Although there is a growing body of work demonstrating the effectiveness of this approach and investigating the origin of this improved stability, studies to date have primarily focused on branched aminopolymer systems such as branched poly(ethylenimine). In this work, hydroxyl-functionalized linear poly(ethylenimine) is used to continue to probe the underlying protective mechanism of this strategy. A combination of thermogravimetric analysis, NMR relaxometry, differential scanning calorimetry, and computational simulations is used to better understand the relationship between the extent of chemical functionalization, physical properties, and adsorbent performance.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 8","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144910056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electronic Transport Properties of Carbon-Encapsulated Maricite NaFePO4 as Cathode Material for Sodium-Ion Batteries 钠离子电池正极材料碳包封水杨酸钠的电子输运性质
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-01 DOI: 10.1002/adsu.202500188
Krishna Dagadkhair, Pratiksha D. Pawar, Shreeram Pillai, Paresh H. Salame
{"title":"Electronic Transport Properties of Carbon-Encapsulated Maricite NaFePO4 as Cathode Material for Sodium-Ion Batteries","authors":"Krishna Dagadkhair,&nbsp;Pratiksha D. Pawar,&nbsp;Shreeram Pillai,&nbsp;Paresh H. Salame","doi":"10.1002/adsu.202500188","DOIUrl":"https://doi.org/10.1002/adsu.202500188","url":null,"abstract":"<p>Electronic transport properties, with detailed dielectric behavior over a wide temperature (123 K – 523 K) and frequency (0.1 Hz – 10 MHz) range of maricite NaFePO<sub>4</sub> (NFP) and carbon-coated NaFePO<sub>4</sub> (NFP@C) as a cathode material for Na-ion batteries are reported. For this, pure phase NFP is synthesized via an ultrasound-assisted sol-gel route, with calcination at 600 °C for 5 h in an N<sub>2</sub> atmosphere. The dielectric studies of NFP revealed very high dielectric constant (ɛ<sub>r</sub>′) values (10<sup>2</sup> &lt; ɛ<sub>r</sub>′ &lt; 10<sup>3</sup>), with non-ideal Debye-like relaxation with frequency. The imaginary part of the dielectric constant (ɛ<sub>r</sub>″) demonstrated that conductivity is a major contributor to the overall dielectric loss in the sample. The frequency-dependent ac conductivity (σ<sub>ac</sub>) response revealed high conductivity values (10<sup>−4</sup> S cm<sup>−1</sup> &lt; σ<sub>ac</sub> &lt; 10<sup>−1</sup> S cm<sup>−1</sup>) resulting from long-range hopping of charge carriers for T &lt; 300 K and re-orientational, localized hopping of charge carriers for T &gt; 300 K. Activation energy of 35 meV and 56 meV is found separating this transition range. Further, a preliminary electrochemical performance of these NFP samples is evaluated in a half-cell configuration, revealing a specific capacity of 14 mAh g<sup>−1</sup> for NFP and 18.11 mAh g<sup>−1</sup> for NFP@C samples.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiling pH-Dependent Mechanistic Shifts in Cu2O-Catalyzed Nitrate Electroreduction for Selective Ammonia Synthesis 揭示cu20催化硝酸电还原选择性氨合成中ph依赖的机制转变
IF 6.1 3区 材料科学
Advanced Sustainable Systems Pub Date : 2025-06-01 DOI: 10.1002/adsu.202500211
Zizi Wang, Fengchen Zhou, Binxin Lv, Jiayue Yu, Junjun Zhang, Yifan Zhang, Yang Wu, Yong Wang, Wen Luo
{"title":"Unveiling pH-Dependent Mechanistic Shifts in Cu2O-Catalyzed Nitrate Electroreduction for Selective Ammonia Synthesis","authors":"Zizi Wang,&nbsp;Fengchen Zhou,&nbsp;Binxin Lv,&nbsp;Jiayue Yu,&nbsp;Junjun Zhang,&nbsp;Yifan Zhang,&nbsp;Yang Wu,&nbsp;Yong Wang,&nbsp;Wen Luo","doi":"10.1002/adsu.202500211","DOIUrl":"https://doi.org/10.1002/adsu.202500211","url":null,"abstract":"<p>The electrocatalytic nitrate reduction reaction (NO<sub>3</sub>RR) offers a sustainable route for ammonia synthesis, yet its practical implementation requires catalysts adaptable to pH fluctuations inherent in industrial wastewater systems. Herein, Cu<sub>2</sub>O nanocubes as a model catalyst is synthesized and decoupled the pH-dependent reaction mechanisms with systematic experimental investigations. In acid electrolytes, the catalyst exhibited 93.3% faradaic efficiency for NH<sub>3</sub> with a yield rate of 34.6 mg h<sup>−1</sup>mg<sub>cat</sub><sup>−1</sup> at −0.7 V versus. RHE. In contrast, in alkaline and neutral electrolytes, NH<sub>3</sub> synthesis is impeded by the formation of NO<sub>2</sub><sup>-</sup> which served as the predominant by-product. Through operando infrared spectroscopy analysis, proton availability as the pivotal regulator is identified: Acidic media facilitates the further conversion of <sup>*</sup>NO<sub>2</sub> intermediates into NH<sub>3</sub> via the NOH pathway, whereas H<sup>+</sup>-deficient environments in neutral/alkaline conditions divert reaction flux through the NHO pathway. This mechanistic elucidation establishes proton concentration as a key parameter for steering nitrate-to-ammonia conversion efficiency.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"9 9","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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