Green Chemical Engineering最新文献_第2页

Tailored SrFeO3-δ for chemical looping dry reforming of methane 用于甲烷化学循环干式转化的定制 SrFeO3-δ

IF 9.1

Green Chemical Engineering Pub Date : 2024-04-23 DOI: 10.1016/j.gce.2024.04.003

Ao Zhu, Dongfang Li, Tao Zhu, Xing Zhu

{"title":"Tailored SrFeO3-δ for chemical looping dry reforming of methane","authors":"Ao Zhu, Dongfang Li, Tao Zhu, Xing Zhu","doi":"10.1016/j.gce.2024.04.003","DOIUrl":"10.1016/j.gce.2024.04.003","url":null,"abstract":"<div><div>Chemical looping dry reforming of methane (CL-DRM) is a highly efficient process that converts two major greenhouse gases (CH<sub>4</sub> and CO<sub>2</sub>) into syngas ready for the feedstock of liquid fuel production. One of the major obstacles facing this technology now is creating oxygen carriers that are stable and reactive. We fabricated high-performance Sr<sub>0.98</sub>Fe<sub>0.7</sub>Co<sub>0.3</sub>O<sub>3-δ</sub> perovskite-structured oxygen carrier by combining A-site defects and B-site doping of SrFeO<sub>3-δ</sub>. During isothermal CL-DRM tests at 850 °C, Sr<sub>0.98</sub>Fe<sub>0.7</sub>Co<sub>0.3</sub>O<sub>3-δ</sub> achieved 87% CH<sub>4</sub> conversion and 94% CO selectivity in the CH<sub>4</sub> partial oxidation reaction, followed by a syngas yield of 8.5 mmol/g, and CO yield of 4.2 mmol/g in CO<sub>2</sub> decomposition. A-site defect engineering of the perovskite creates abundant oxygen vacancies and enhances oxygen storage capacity (OSC). Co-doping of the B-site of Sr<sub>0.98</sub>FeO<sub>3-δ</sub> increases oxygen mobility and CH<sub>4</sub>/CO<sub>2</sub> activation, resulting in high activity in the CL-DRM process. This methodology resulted in high ionic mobility and facilitated the rapid diffusion of oxygen in the bulk phase, thereby increasing the redox properties of SrFeO<sub>3-δ</sub>. The oxygen carrier exhibits excellent structural stability and regeneration ability in successive redox cycles. This strategy offers a simple but very effective pathway to tailor OSC, oxygen mobility, and oxygen vacancies of perovskite-structured materials for chemical looping or redox-involved processes.</div></div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"6 1","pages":"Pages 102-115"},"PeriodicalIF":9.1,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140786370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep eutectic solvent-induced controllable synthesis of bifunctional Ni–Fe–P catalysts for electrochemical water splitting 深共晶溶剂诱导可控合成用于电化学水分离的双功能 Ni-Fe-P 催化剂

IF 9.1

Green Chemical Engineering Pub Date : 2024-04-10 DOI: 10.1016/j.gce.2024.04.002

Ruichang Xue , Rongrong Deng , Yan Li , Mengqiu Gao , Jiafu Wang , Qibo Zhang

{"title":"Deep eutectic solvent-induced controllable synthesis of bifunctional Ni–Fe–P catalysts for electrochemical water splitting","authors":"Ruichang Xue , Rongrong Deng , Yan Li , Mengqiu Gao , Jiafu Wang , Qibo Zhang","doi":"10.1016/j.gce.2024.04.002","DOIUrl":"10.1016/j.gce.2024.04.002","url":null,"abstract":"<div><div>Developing electrocatalysts with excellent activity, high stability, and low cost is vital for large-scale hydrogen production through electrochemical water splitting. Herein, a bifunctional Ni–Fe–P catalyst <em>in situ</em> grown on Fe foam (Ni–Fe–P/FF) is developed by a simple one-step solvothermal process in the deep eutectic solvent (DES) of ethylene glycol and choline chloride (named Ethaline). The unique solvent environment of Ethaline assisted with the regulating effect of the introduced Fe(III) ions shows an essential role in governing the preparation process. The developed Ni–Fe–P/FF acts as the efficient bifunctional electrocatalyst for water splitting in 1.0 M KOH, requiring overpotentials of 82 mV (229 mV) and 263 mV (370 mV) to deliver 10 mA cm<sup>−2</sup> (100 mA cm<sup>−2</sup>) for oxygen and hydrogen evolution reactions, respectively. Furthermore, the self-supported catalyst-assembled electrolyzer also exhibits good catalytic performance with a low voltage of 1.83 V to drive 100 mA cm<sup>−2</sup> and good stability over 100 h. This work offers a facile approach to fabricating high-performance bifunctional Ni–Fe–P electrocatalysts to catalyze water splitting.</div></div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"6 1","pages":"Pages 93-101"},"PeriodicalIF":9.1,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140776231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep eutectic solvents for fractionation and valorization of lignocellulose 用于木质纤维素分馏和增值的深度共晶溶剂

IF 9.1

Green Chemical Engineering Pub Date : 2024-04-06 DOI: 10.1016/j.gce.2024.04.001

Yansai Bao, Yang Wang, Chuanyu Yan, Zhimin Xue

引用次数: 0

The different structure and properties of protic ionic liquid in alcohol from acid and base: butylammonium butyrate mixing with butanol, butyric acid, and butylamine respectively 原离子液体在酒精中与酸和碱的不同结构和性质：丁酸丁铵分别与丁醇、丁酸和丁胺的混合物

IF 9.1

Green Chemical Engineering Pub Date : 2024-04-04 DOI: 10.1016/j.gce.2024.03.005

Xuan Zhang , Yue Zhang , Haoran Li , Jia Yao

{"title":"The different structure and properties of protic ionic liquid in alcohol from acid and base: butylammonium butyrate mixing with butanol, butyric acid, and butylamine respectively","authors":"Xuan Zhang , Yue Zhang , Haoran Li , Jia Yao","doi":"10.1016/j.gce.2024.03.005","DOIUrl":"10.1016/j.gce.2024.03.005","url":null,"abstract":"<div><div>Solvents are commonly added into protic ionic liquids (PILs) to reduce viscosity in practical applications. Understanding the relationship between the structure and properties of PILs mixed with solvents is also essential for tailoring specific applications, however, such research is limited. In this study, we measured and compared the density, viscosity, and conductivity of three mixed systems: <em>n</em>-butylammonium butyrate ionic liquid (PIL) mixing with <em>N</em>-butyric acid (PrCOOH), PIL-<em>N</em>-butylamine (BuNH<sub>2</sub>), and PIL-<em>N</em>-butanol (BuOH). Small- and wide-angle X-ray scattering (S/WAXS), molecular dynamics (MD) simulation, and electron paramagnetic resonance (EPR) techniques were used to explore their inherent structural differences. The results indicate that the properties of the PIL-BuOH and PIL-PrCOOH systems exhibit more overall similarity in trends compared to the PIL-BuNH<sub>2</sub> system. However, when the molar fraction of alcohol or acid exceeds 0.8, structural differences between the two systems lead to the differences in properties. The hydrogen bond network between the BuOH molecules outside the ion cluster leads to higher viscosity and conductivity than the PIL-PrCOOH system. However, the strong hydrogen bond between PrCOOH and anions will replace the position of cations and form spherical clusters. This research highlights how distinct structures influence diverse properties, providing deeper insights into the structure-property relationship.</div></div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"6 1","pages":"Pages 85-92"},"PeriodicalIF":9.1,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140789223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical study on performance optimization and flow mechanism of a new cyclone separator 新型旋风分离器性能优化和流动机理的数值研究

IF 9.1

Green Chemical Engineering Pub Date : 2024-03-29 DOI: 10.1016/j.gce.2024.03.006

Mengjing Feng , Chengmin Gui , Yangfan Zhou , Zhigang Lei

{"title":"Numerical study on performance optimization and flow mechanism of a new cyclone separator","authors":"Mengjing Feng , Chengmin Gui , Yangfan Zhou , Zhigang Lei","doi":"10.1016/j.gce.2024.03.006","DOIUrl":"10.1016/j.gce.2024.03.006","url":null,"abstract":"<div><div>This study proposed a new cyclone separator, using a designed nozzle inside the traditional cyclone separator, which significantly improved the efficiency of separating fine particles while maintaining an essentially unchanged pressure drop. Firstly, computational fluid dynamics (CFD) was used to compare the flow characteristics of the new cyclone separator with those of the traditional cyclone separator. On this basis, this study comprehensively investigated the pressure drop and separation efficiency of two separators under varying working conditions. The new separator achieved a separation efficiency for particles with a particle size of 1 μm that was approximately 45% higher than that of the traditional separator when the inlet velocity was 2–10 m/s. Besides, the pressure drop of the cyclone separator remained unchanged while the separation efficiency increased by 46% at an inlet flow rate of 2 m/s. The influence of the outlet area of the nozzle inside the new cyclone separator on the separation efficiency and pressure drop was analyzed, and the outlet area of the nozzle with the best overall performance was determined. It was found that the overall performance of the new cyclone separator is optimal when the nozzle outlet area is <em>S</em>/<em>f</em> = 2 cm. Finally, an energy-saving cyclone separator with high separation efficiency was developed through an in-depth study of the variation of particle motion configuration with time. It is worth noting that this study provides a guidance for the flow field analysis and geometry optimization of new gas-solid separators, not limited to cyclone separators.</div></div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"6 1","pages":"Pages 76-84"},"PeriodicalIF":9.1,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140403664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Near-infrared long-lifetime emission via triplet-to-singlet Förster resonance energy transfer 通过三重子到星子的佛斯特共振能量转移实现近红外长寿命发射

IF 9.1

Green Chemical Engineering Pub Date : 2024-03-22 DOI: 10.1016/j.gce.2024.03.004

Ruihong Liu , Dongzhi Liu , Xiang Ma

引用次数: 0

Outside Back Cover 封底外侧

Green Chemical Engineering Pub Date : 2024-03-15 DOI: 10.1016/S2666-9528(24)00014-1

引用次数: 0

OFC: Outside Front Cover OFC：封面外侧

Green Chemical Engineering Pub Date : 2024-03-15 DOI: 10.1016/S2666-9528(24)00006-2

引用次数: 0

Boosting visible-light-driven hydrogen evolution through Pt site anchored 2D/2D heterostructure catalyst: Cd-TCPP(Pt)@CdS 通过锚定 Pt 位点的 2D/2D 异质结构催化剂促进可见光驱动的氢气进化：Cd-TCPP(Pt)@CdS

IF 9.1

Green Chemical Engineering Pub Date : 2024-03-15 DOI: 10.1016/j.gce.2024.03.002

Guo-Wei Guan, Yi-Tao Li, Li-Ping Zhang, Su-Tao Zheng, Si-Chao Liu, Hao-Ling Lan, Qing-Yuan Yang

{"title":"Boosting visible-light-driven hydrogen evolution through Pt site anchored 2D/2D heterostructure catalyst: Cd-TCPP(Pt)@CdS","authors":"Guo-Wei Guan, Yi-Tao Li, Li-Ping Zhang, Su-Tao Zheng, Si-Chao Liu, Hao-Ling Lan, Qing-Yuan Yang","doi":"10.1016/j.gce.2024.03.002","DOIUrl":"10.1016/j.gce.2024.03.002","url":null,"abstract":"<div><div>Solar-powered water splitting is an up-and-coming method for hydrogen production. Still, it faces several challenges, including improving light responsiveness, maximizing utilization of photocatalyst active sites, and effectively utilizing photo-induced carriers to prevent low hydrogen production. In this research, we propose an approach for designing a 2D/2D heterostructure catalyst, the Cd-TCPP(Pt)@CdS, which consists of 2D CdS nanosheets (NSs) and a 2D metal-organic framework (MOF) with Pt active sites (Cd-TCPP(Pt)), aiming to achieve highly efficient visible-light-driven hydrogen evolution. Firstly, CdS NSs exhibit excellent responsiveness to visible light, ensuring robust generation of photo-induced carriers. Secondly, the 2D MOF provides abundant Pt active sites, enhancing electron utilization and reducing the energy barrier for proton reduction. Compared to pure CdS NSs (which demonstrate a hydrogen production activity of 1220 μmol/g/h), the newly designed 2D/2D composite catalyst Cd-TCPP(Pt)@CdS exhibits an activity of 13,434 μmol/g/h, representing an 11-fold increase. Impressively, Cd-TCPP(Pt)@CdS maintains a high activity of 3062 μmol/g/h even under sunlight. Density functional theory (DFT) calculations were employed to investigate the principle of proton reduction. The suitable bandgap of CdS and energy gap of 2D Cd-TCPP(Pt) contribute to their strong interaction and consequently higher efficiency in hydrogen evolution. The Pt-single atom (Pt-SA) also provides sites with low free energy for proton reduction, contributing to improved activity. The photocatalytic performance of Cd-TCPP(Pt)@CdS NSs composites demonstrates a synergistic effect between the 2D inorganic semiconductor and the 2D MOF containing the Pt-site, resulting in enhanced utilization of photo-induced carriers and atoms.</div></div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"6 1","pages":"Pages 68-75"},"PeriodicalIF":9.1,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140278325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Flexible photosensors based on photothermal conversion 基于光热转换的柔性光传感器

IF 9.1

Green Chemical Engineering Pub Date : 2024-03-15 DOI: 10.1016/j.gce.2024.03.001

Beihang Xu, Yao An, Jinghao Zhu, Yonglin He

引用次数: 0