Green Energy & Environment最新文献

{"title":"Construction of two-dimensional heterojunctions based on metal-free semiconductor materials and Covalent Organic Frameworks for exceptional solar energy catalysis","authors":"Haijun Hu, Daming Feng, Kailai Zhang, Hui Li, Hongge Pan, Hongwei Huang, Xiaodong Sun, Tianyi Ma","doi":"10.1016/j.gee.2024.09.001","DOIUrl":"https://doi.org/10.1016/j.gee.2024.09.001","url":null,"abstract":"Covalent organic frameworks (COFs) are newly developed crystalline substances that are garnering growing interest because of their ultra-high porosity, crystalline nature, and easy modified architecture, showing promise in the field of photocatalysis. However, it is difficult for pure COFs materials to achieve excellent photocatalytic hydrogen production due to their severe carrier recombination problems. To mitigate this crucial issue, establishing heterojunction is deemed an effective approach. Nonetheless, many of the metal-containing materials that have been used to construct heterojunctions with COFs own a number of drawbacks, including small specific surface area and rare active sites (for inorganic semiconductor materials), wider bandgaps and higher preparation costs (for MOFs). Therefore, it is necessary to choose metal-free materials that are easy to prepare. Red phosphorus (RP), as a semiconductor material without metal components, with suitable bandgap, moderate redox potential, relatively minimal toxicity, is affordable and readily available. Herein, a range of RP/TpPa-1-COF (RP/TP1C) composites have been successfully prepared through solvothermal method. The two-dimensional structure of the two materials causes strong interactions between the materials, and the construction of heterojunctions effectively inhibits the recombination of photogenic charge carrier. As a consequence, the 9% RP/TP1C composite, with the optimal photocatalytic ability, achieves a photocatalytic H<ce:inf loc=\"post\">2</ce:inf> evolution rate of 6.93 mmol g<ce:sup loc=\"post\">−1</ce:sup> h<ce:sup loc=\"post\">−1</ce:sup>, demonstrating a 10.19-fold increase compared to that of bare RP and a 4.08-fold improvement over that of pure TP1C. This article offers a novel and innovative method for the advancement of efficient COFs-based photocatalysts.","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"50 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142264432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on the application of defect engineering in the field of environmental catalysis","authors":"Sirui Gao, Shunzheng Zhao, Xiaolong Tang, Long Sun, Qiyu Li, Honghong Yi","doi":"10.1016/j.gee.2024.08.008","DOIUrl":"https://doi.org/10.1016/j.gee.2024.08.008","url":null,"abstract":"Researchers have recently developed various surface engineering approaches to modify environmental catalysts and improve their catalytic activity. Defect engineering has proved to be one of the most promising modification methods. Constructing defects on the surface of catalytic materials can effectively modulate the coordination environment of the active sites, affecting and changing the electrons, geometry, and other important properties at the catalytic active sites, thus altering the catalytic activity of the catalysts. However, the conformational relationship between defects and catalytic activity remains to be clarified. This dissertation focuses on an overview of recent advances in defect engineering in environmental catalysis. Based on defining the classification of defects in catalytic materials, defect construction methods, and characterization techniques are summarized and discussed. Focusing on an overview of the characteristics of the role of defects in electrocatalytic, photocatalytic, and thermal catalytic reactions and the mechanism of catalytic reactions. An elaborate link is given between the reaction activity and the structure of catalyst defects. Finally, the existing challenges and possible future directions for the application of defect engineering in environmental catalysis are discussed, which are expected to guide the design and development of efficient environmental catalysts and mechanism studies.","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"1 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recyclable bio-based epoxy resin thermoset polymer from wood for circular economy","authors":"Bowen Zhang, Saravanakumar Elangovan, Zhuohua Sun","doi":"10.1016/j.gee.2024.08.007","DOIUrl":"https://doi.org/10.1016/j.gee.2024.08.007","url":null,"abstract":"","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"17 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ti3C2 MXene nanosheets integrated cobalt-doped nickel hydroxide heterostructured composite: An efficient electrocatalyst for overall water-splitting","authors":"Amaranadha Reddy Manchuri, Kamakshaiah Charyulu Devarayapalli, Bolam Kim, Youngsu Lim, Dae Sung Lee","doi":"10.1016/j.gee.2024.08.006","DOIUrl":"https://doi.org/10.1016/j.gee.2024.08.006","url":null,"abstract":"Developing an efficient electrocatalyst for superior electrochemical water splitting (EWS) is crucial for achieving comprehensive hydrogen production. A heterostructured electrocatalyst, free of noble metals, TiC MXene nanosheet-integrated cobalt-doped nickel hydroxide (NHCoMX) composite was synthesized via a hydrothermal method. The abundant pores in the TiC MXene nanosheet (MX)–integrated microarchitecture increased the number of active sites and facilitated charge transfer, thus enhancing electrocatalysis. Specifically, the MX-enhanced charge transfer considerably transformed the microelectronic structure of cobalt-doped Ni(OH) (NHCo), which promoted its hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Hence, as an EWS catalyst, NHCoMX exhibited an exceptional electrocatalytic activity, demonstrating OER and HER overpotentials of 310 mV and 73 mV, respectively, with low Tafel slopes of 65 mV dec and 85 mV dec, respectively; it exhibited a current density of 10 mV cm in 1.0 mol L KOH, representing the closest efficiency to the noble state-of-the-art RuO and Pt/C catalyst. Furthermore, the developed electrocatalyst improved the activities of both HER and OER, leading to an overall EWS current density of 10 mA cm at 1.72 V in an alkaline electrolyte with two electrodes. This study describes an efficient heterostructured NHCoMX composite electrocatalyst. It is significantly comparable to the noble state-of-the-art electrocatalysts and can be extended to fabricate resourceful catalysts for large-scale EWS applications.","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"165 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"2,6-Diaminoanthraquinone modified MXene (Ti3C2Tx)/graphene as the negative electrode materials for ionic liquid-based asymmetric supercapacitors","authors":"Li Sun, Lujia Chai, Liangqi Jing, Yujuan Chen, Kelei Zhuo, Jianji Wang","doi":"10.1016/j.gee.2024.08.004","DOIUrl":"https://doi.org/10.1016/j.gee.2024.08.004","url":null,"abstract":"Due to insufficient energy density, supercapacitors (SCs) with preeminent-power and long cycle stability cannot be implemented in some practical applications. Exploring hybrid materials with redox activity to emerge high specific capacitance in ionic liquid (IL) electrolytes can solve this problem. Herein, we report a redox-organic molecule 2,6-diaminoanthraquinone (DAAQ) modified MXene (TiCT)/Graphene (DAAQ-M/G) composite material. With the assist of graphene oxide (GO), MXene and graphene fabricate a three-dimensional (3D) interconnected structure as a conductive framework, which inhibits self-stacking of MXene monolayers and ensures high electronic conductivity. Meanwhile, DAAQ is loaded onto the M/G framework through covalent/non-covalent functionalization. The DAAQ as a spacer effectively enlarges the interlayer spacing of MXene nanosheets, and meanwhile produces reversible redox reactions during charge/discharge processes to provide additional Faradaic contribution to capacity. Therefore, the specific capacitance (capacity) of the DAAQ-M/G as the negative electrode material reaches to 226 F g (306 C g) at 1 A g in 1-ethyl-3-methylimidazolium tetrafluoroborate (EmimBF) electrolyte. Furthermore, an asymmetric supercapacitor (ASC) is assembled using DAAQ-M/G as the negative electrode and self-prepared organic molecule hydroquinone modified reduced graphene oxide (HQ-RGO) material as the positive electrode, with a high energy density of 43 Wh kg at high power density of 1669 W kg. The ASC can maintain 80% of initial specific capacitance after 9000 cycles. This research can provide better support to develop advanced organic molecules-modified MXene composite materials for ionic liquid-based SCs.","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"42 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perspectives on aqueous organic redox flow batteries","authors":"Fulong Zhu, Qiliang Chen, Yongzhu Fu","doi":"10.1016/j.gee.2024.08.003","DOIUrl":"https://doi.org/10.1016/j.gee.2024.08.003","url":null,"abstract":"","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"154 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 mineralization by typical industrial solid wastes for preparing ultrafine CaCO3: A review","authors":"Run Xu, Fuxia Zhu, Liang Zou, Shuqing Wang, Yanfang Liu, Jili Hou, Chenghao Li, Kuntong Song, Lingzhao Kong, Longpeng Cui, Zhiqiang Wang","doi":"10.1016/j.gee.2024.08.002","DOIUrl":"https://doi.org/10.1016/j.gee.2024.08.002","url":null,"abstract":"Mineral carbonation is a promising CO sequestration strategy that can utilize industrial wastes to convert CO into high-value CaCO. This review summarizes the advancements in CO mineralization using typical industrial wastes to prepare ultrafine CaCO. This work surveys the mechanisms of CO mineralization using these wastes and its capacities to synthesize CaCO, evaluates the effects of carbonation pathways and operating parameters on the preparation of CaCO, analyzes the current industrial application status and economics of this technology. Due to the large amount of impurities in solid wastes, the purity of CaCO prepared by indirect methods is greater than that prepared by direct methods. Crystalline CaCO includes three polymorphs. The polymorph of CaCO synthesized by carbonation process is determined the combined effects of various factors. These parameters essentially impact the nucleation and growth of CaCO by altering the CO supersaturation in the reaction system and the surface energy of CaCO grains. Increasing the initial pH of the solution and the CO flow rate favors the formation of vaterite, but calcite is formed under excessively high pH. Vaterite formation is favored at lower temperatures and residence time. With increased temperature and prolonged residence time, it passes through aragonite metastable phase and eventually transforms into calcite. Moreover, polymorph modifiers can decrease the surface energy of CaCO grains, facilitating the synthesis of vaterite. However, the large-scale application of this technology still faces many problems, including high costs, high energy consumption, low calcium leaching rate, low carbonation efficiency, and low product yield. Therefore, it is necessary to investigate ways to accelerate carbonation, optimize operating parameters, develop cost-effective agents, and understand the kinetics of CaCO nucleation and crystallization to obtain products with specific crystal forms. Furthermore, more studies on life cycle assessment (LCA) should be conducted to fully confirm the feasibility of the developed technologies.","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"25 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142200006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechano-driven chemical reactions","authors":"Shaoxin Li, Jiajin Liu, Zhong Lin Wang, Di Wei","doi":"10.1016/j.gee.2024.08.001","DOIUrl":"https://doi.org/10.1016/j.gee.2024.08.001","url":null,"abstract":"Traditional chemical processes often generate substantial waste, leading to significant pollution of water, air, and soil. Developing eco-friendly chemical methods is crucial for economic and environmental sustainability. Mechano-driven chemistry, with its potential for material recyclability and minimal byproducts, is well-aligned with green chemistry principles. Despite its origins over 2000 years ago and nearly 200 years of scientific investigation, mechano-driven chemistry has not been widely implemented in practice. This is likely due to a lack of comprehensive understanding and the complex physical effects of mechanical forces, which challenge reaction efficiency and scalability. This review summarizes the historical development of mechano-driven chemistry and discusses its progress across various physical mechanisms, including mechanochemistry, tribochemistry, piezochemistry, and contact electrification (CE) chemistry. CE-induced chemical reactions, involving ion transfer, electron transfer, and radical generation, are detailed, emphasizing the dominant role of radicals initiated by electron transfer and the influence of ion transfer through electrical double layer (EDL) formation. Advancing efficient, eco-friendly, and controllable green chemical technologies can reduce reliance on traditional energy sources (such as electricity and heat) and toxic chemical reagents, fostering innovation in material synthesis, catalytic technologies, and establishing a new paradigm for broader chemical applications.","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"31 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Superhydrophobic ceramic membrane coupled with a biphasic solvent for efficient CO2 capture","authors":"Kaili Xue, Zhen Chen, Xiaona Wu, Heng Zhang, Haiping Chen, Junhua Li","doi":"10.1016/j.gee.2024.07.010","DOIUrl":"https://doi.org/10.1016/j.gee.2024.07.010","url":null,"abstract":"An innovative strategy was proposed by integration of membrane contactor (MC) with biphasic solvent for efficient CO capture from flue gas. The accessible fly ash-based ceramic membrane (CM) underwent hydrophobic modification through silane grafting, followed by fluoroalkylsilane decoration, to prepare the superhydrophobic membrane (CSCM). The CSCM significantly improved resistance to wetting by the biphasic solvent, consisting of amine (DETA) and sulfolane (TMS). Morphological characterizations and chemical analysis revealed the notable enhancements in pore structure and hydrophobic chemical groups for the modified membrane. Predictions of wetting/bubbling behavior based on static wetting theory referred the liquid entry pressure (LEP) of CSCM increased by 20 kPa compared to pristine CM. Compared with traditional amine solvents, the biphasic solvent presented the expected phase separation. Performance experiments demonstrated that the CO capture efficiency of the biphasic solvent increased by 7%, and the electrical energy required for desorption decreased by 32%. The 60-h continuous testing and supplemental characterization of used membrane confirmed the excellent adaptability and durability of the CSCMs. This study provides a potential approach for accessing hydrophobic ceramic membranes and biphasic solvents for industrial CO capture.","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"23 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solar-assisted two-stage catalytic membrane reactor for coupling CO2 splitting with methane oxidation reaction","authors":"Jinkun Tan, Zhenbin Gu, Zhengkun Liu, Pei Wang, Reinout Meijboom, Guangru Zhang, Wanqin Jin","doi":"10.1016/j.gee.2024.07.006","DOIUrl":"https://doi.org/10.1016/j.gee.2024.07.006","url":null,"abstract":"A two-stage catalytic membrane reactor (CMR) that couples CO splitting with methane oxidation reactions was constructed based on an oxygen-permeable perovskite asymmetric membrane. The asymmetric membrane comprises a dense SrFeTaO (SFT) separation layer and a porous Sr(FeTa)CuO (SFTC) catalytic layer. In the first stage reactor, a CO splitting reaction (CDS: 2CO→2CO+O) occurs at the SFTC catalytic layer. Subsequently, the O product is selectively extracted through the SFT separation layer to the permeated side for the methane combustion reaction (MCR), which provides an extremely low oxygen partial pressure to enhance the oxygen extraction. In the second stage, a Sr(FeTa)NiO (SFTN) catalyst is employed to reform the products derived from MCR. The two-stage CMR design results in a remarkable 35.4% CO conversion for CDS at 900 °C. The two-stage CMR was extended to a hollow fiber configuration combining with solar irradiation. The solar-assisted two-stage CMR can operate stably for over 50 hours with a high hydrogen yield of 18.1 mL min cm. These results provide a novel strategy for reducing CO emissions, suggesting potential avenues for the design of the high-performance CMRs and catalysts based on perovskite oxides in the future.","PeriodicalId":12744,"journal":{"name":"Green Energy & Environment","volume":"134 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141779681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}