Rare Metals最新文献_第6页

The amorphization strategies of two-dimensional transition metal oxide/(oxy)hydroxide nanomaterials for enhanced electrocatalytic water splitting 二维过渡金属氧化物/（氧）氢氧化物纳米材料增强电催化水分解的非晶化策略

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-31 DOI: 10.1007/s12598-024-03082-0

Si-Bin Duan, Yu-Qing Wang, Rui Cao, Yi-Fei Sun, Wen Zhang, Rong-Ming Wang

{"title":"The amorphization strategies of two-dimensional transition metal oxide/(oxy)hydroxide nanomaterials for enhanced electrocatalytic water splitting","authors":"Si-Bin Duan, Yu-Qing Wang, Rui Cao, Yi-Fei Sun, Wen Zhang, Rong-Ming Wang","doi":"10.1007/s12598-024-03082-0","DOIUrl":"10.1007/s12598-024-03082-0","url":null,"abstract":"<div><p>Amorphous two-dimensional transition metal oxide/(oxy)hydroxide (2D TMO/TMHO) nanomaterials (NMs) have the properties of both 2D and amorphous materials, displaying outstanding physicochemical qualities. Therefore, they demonstrate considerable promise for use in electrocatalytic water splitting applications. Here, the primary amorphization strategies for achieving the 2D TMO/TMHO NMs are comprehensively reviewed, including low-temperature reaction, rapid reaction, exchange/doping effect, ligand modulation, and interfacial energy confinement. By integrating these strategies with various physicochemical synthesis methods, it is feasible to control the amorphization of TMO/TMHO NMs while maintaining the distinctive benefits of their 2D structures. Furthermore, it delves into the structural advantages of amorphous 2D TMO/TMHO NMs in electrocatalytic water splitting, particularly emphasizing recent advancements in enhancing their electrocatalytic performance through interface engineering. The challenges and potential future directions for the precise synthesis and practical application of amorphous 2D TMO/TMHO NMs are also provided. This review aims to establish a theoretical foundation and offer experimental instructions for developing effective and enduring electrocatalysts for water splitting.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 2","pages":"822 - 840"},"PeriodicalIF":9.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Effects of pore size and volume on capacity and rate performance for potassium-ion batteries 孔径和体积对钾离子电池容量和倍率性能的影响

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-31 DOI: 10.1007/s12598-024-03183-w

Bo Wang, Zi-Yu Wu, Si-Chen Deng, Di Zhang, Qiu-Jun Wang, Qu-Jiang Sun, Fei Yuan, Zhao-Jin Li, Wei Wang

{"title":"Effects of pore size and volume on capacity and rate performance for potassium-ion batteries","authors":"Bo Wang, Zi-Yu Wu, Si-Chen Deng, Di Zhang, Qiu-Jun Wang, Qu-Jiang Sun, Fei Yuan, Zhao-Jin Li, Wei Wang","doi":"10.1007/s12598-024-03183-w","DOIUrl":"10.1007/s12598-024-03183-w","url":null,"abstract":"<div><p>Micro-/mesopore structures in carbon anode are highly desirable for increasing active sites and accelerating ion migration, favoring high capacity and rate performance. However, some structure–performance relationships still need to be clarified, and an in-depth understanding of how pore size and volume affect capacity and rate performance has rarely been mentioned. Herein, a series of carbon nanosheets with different micro-/mesopore sizes and volumes are precisely prepared. Detailed experimental analyses demonstrate that micropore volume rather than size is tightly responsible for capacity, resulting from its “accommodation effect” for ions. Conversely, mesopore size instead of volume is closely related to rate performance, which can be ascribed to its “channels effect” for ions. Capacity and rate performance first increase and then decrease with increasing micropore volume and mesopore size. In this work, the sample featured with the optimal micropore volume (1.6 cm<sup>3</sup>·g<sup>−1</sup>) and mesopore size (2.55 nm) delivers the highest capacity (453 mAh·g<sup>−1</sup> at 0.5 A·g<sup>−1</sup>) and excellent rate performance (235.1 mAh·g<sup>−1</sup> at 2 A·g<sup>−1</sup>). This work provides a new insight into the understanding of micro-/mesopore parameters and their effect on capacity and rate performance.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3016 - 3025"},"PeriodicalIF":9.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

External stress induced pseudo-spinodal transformation pathway with reduced lamellar size in γ-TiAl alloys γ-TiAl合金中外应力诱导的伪spinodal转变途径导致片层尺寸减小

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-31 DOI: 10.1007/s12598-024-03165-y

Jian-Wei Li, Tian-Jiao Dong, Chuan-Xin Liang, He-Ran Wang, Li-Qiang He, Tian-Long Zhang, Dong Wang

{"title":"External stress induced pseudo-spinodal transformation pathway with reduced lamellar size in γ-TiAl alloys","authors":"Jian-Wei Li, Tian-Jiao Dong, Chuan-Xin Liang, He-Ran Wang, Li-Qiang He, Tian-Long Zhang, Dong Wang","doi":"10.1007/s12598-024-03165-y","DOIUrl":"10.1007/s12598-024-03165-y","url":null,"abstract":"<div><p>Reducing the size of the lamellar structures and increasing the number of twin structures are both effective strategies for enhancing the ductility and fracture toughness of γ-TiAl alloys. Hot isostatic pressing combined with heat treatment is an promising method to optimize the microstructure of TiAl alloys and improve their mechanical properties. However, systematic investigations into the microstructural evolution under high temperature pressure/external stress are limited. In this study, by integrating phase field simulations and CALPHAD thermodynamic database, a unique microstructural response to external stress during aging process is revealed. With the increase of external stress, the size of the lamellar structure initially decreases but then increases, while the number of twin structures initially rises but then decreases, showing nonlinear relationships. An increase in external stress shifts the free energy curves, altering the position of <i>c</i><sub>0</sub> (the intersection position between free energies of α<sub>2</sub> and γ), which leads to a change in the nucleation mechanism from classical nucleation to pseudo-spinodal decomposition and influences the final microstructure of γ precipitates. Further simulations indicate a linear correlation between optimal external stress and varying Al content. A deeper analysis indicates that the observed variations in the size and twin structures can be attributed to the interplay among the growth rate of existing variants, the competitive nucleation rates of twinned variants and the redistribution of composition under different external stresses. Our findings provide new insights into optimizing microstructures by pressure/external stress in precipitation processes.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3460 - 3478"},"PeriodicalIF":9.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Coupling of alloying and interface effects in dendritic Au-doped PtPd alloy/dumbbell-like bismuth telluride heterostructures for ethanol and methanol electrooxidation 用于乙醇和甲醇电氧化的树枝状金掺杂铂钯合金/哑铃状碲化铋异质结构中的合金效应和界面效应耦合

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-31 DOI: 10.1007/s12598-024-03145-2

Ting-Ting Zhou, Kai-Yu Dong, Zhe Zheng, Qiang Yuan

{"title":"Coupling of alloying and interface effects in dendritic Au-doped PtPd alloy/dumbbell-like bismuth telluride heterostructures for ethanol and methanol electrooxidation","authors":"Ting-Ting Zhou, Kai-Yu Dong, Zhe Zheng, Qiang Yuan","doi":"10.1007/s12598-024-03145-2","DOIUrl":"10.1007/s12598-024-03145-2","url":null,"abstract":"<div><p>Alloying and interface effects are effective strategies for enhancing the performance of electrocatalysts in energy-related devices. Herein, dendritic Au-doped platinum-palladium alloy/dumbbell-like bismuth telluride heterostructures (denoted PtPdAu/BiTe) were synthesized using a visible-light-assisted strategy. The coupling alloy and interfacial effects of PtPdAu/BiTe significantly improved the performance and stability of both the ethanol oxidation reaction (EOR) and methanol oxidation reaction (MOR). Introducing a small amount of Au effectively enhanced the CO tolerance of PtPdAu/BiTe compared to dendritic platinum-palladium alloy/dumbbell-like bismuth telluride heterostructures. PtPdAu/BiTe exhibited mass activities of 31.5 and 13.3 A·mg<sub>Pt</sub><sup>−1</sup> in EOR and MOR, respectively, which were 34.4 and 13.2 times higher than those of commercial Pt black, revealing efficient Pt atom utilization. In-situ Fourier transform infrared spectroscopy demonstrated complete 12e<sup>−</sup> and 6e<sup>−</sup> oxidation of ethanol and methanol on PtPdAu/BiTe. The PtPdAu/BiTe/C achieved mass peak power densities of 131 and 156 mW·mg<sub>Pt</sub><sup>−1</sup>, which were 2.4 and 2.2 times higher than those of Pt/C in practical direct ethanol fuel cell (DEFC) and direct methanol fuel cell (DMFC), respectively, highlighting their potential application in DEFC and DMFC. This study introduces an effective strategy for designing efficient and highly CO tolerant anodic electrocatalysts for practical DEFC and DMFC applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3119 - 3129"},"PeriodicalIF":9.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Spraying-assisted layer-by-layer assembled coatings with dual self-healing ability to resist degradation and enhance endothelialization of ZE21B alloys for vascular stents 具有抗降解和增强血管支架用ZE21B合金内皮化双重自愈能力的喷涂辅助逐层组装涂层

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-31 DOI: 10.1007/s12598-024-03159-w

Liu-Jie Qi, Zhao-Qi Zhang, Mujahid Iqbal, Fei Wang, Jing-An Li, Shao-Kang Guan

{"title":"Spraying-assisted layer-by-layer assembled coatings with dual self-healing ability to resist degradation and enhance endothelialization of ZE21B alloys for vascular stents","authors":"Liu-Jie Qi, Zhao-Qi Zhang, Mujahid Iqbal, Fei Wang, Jing-An Li, Shao-Kang Guan","doi":"10.1007/s12598-024-03159-w","DOIUrl":"10.1007/s12598-024-03159-w","url":null,"abstract":"<div><p>Drug-eluting magnesium (Mg) alloy stents have a slower degradation rate and lower restenosis rate compared with uncoated stents, demonstrating good clinical efficacy. However, the release of anti-hyperplasia drugs from coatings delays endothelial tissue repair, thus leading to late stent thrombosis. To address these issues, a dual self-healed coating with various biological properties was fabricated on magnesium fluoride/polydopamine (MgF<sub>2</sub>/PDA)-treated Mg alloys by spraying-assisted layer-by-layer (LBL) self-assembly of chitosan (CS), gallic acid (GA), and 3-aminobenzeneboronic acid-modified hyaluronic acid (HA-ABBA). The LBL coating, approximately 1.50 μm thick, exhibited a uniform morphology with good adhesion strength (~ 1065 mN). The annual corrosion rate (<i>P</i><sub>i</sub>) of LBL samples was ~ 1400 times slower than that of the Mg substrate, due to the physical barrier function provided by MgF<sub>2</sub>/PDA layers and the dual self-healed ability of LBL layers. The rapid self-healing ability (with a healing period of ~ 4 h under dynamic/static conditions) resulted from the synergistic interplay between the recombination of diverse chemical bonds within the LBL coating and the coordination of LBL-released GA with Mg<sup>2+</sup>, as corroborated by computer simulations. Compared with the drug-eluting coatings, the LBL sample demonstrated substantial advantages in anti-oxidation, anti-denaturation of fibrinogen, anti-platelet adhesion, anti-inflammation, anti-hyperplasia, and promoted-endothelialization. These benefits effectively address the limitations associated with drug-eluting coatings. </p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3405 - 3427"},"PeriodicalIF":9.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Surface segregation-intensified physical vapor deposition of TiO2 on polyether sulfone membranes for enhanced antifouling performances 二氧化钛在聚醚砜膜上的表面分离强化物理气相沉积以增强防污性能

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-30 DOI: 10.1007/s12598-024-03122-9

Hong-Jian Wang, Hai-Xia Wang, Yang-Yang Song, Ke-Wei Qiu, Yu-Zhu Liu, Guo-Cheng Yao, Wen-Liang Li, Ya-Nan Liu, Fu-Sheng Pan

{"title":"Surface segregation-intensified physical vapor deposition of TiO2 on polyether sulfone membranes for enhanced antifouling performances","authors":"Hong-Jian Wang, Hai-Xia Wang, Yang-Yang Song, Ke-Wei Qiu, Yu-Zhu Liu, Guo-Cheng Yao, Wen-Liang Li, Ya-Nan Liu, Fu-Sheng Pan","doi":"10.1007/s12598-024-03122-9","DOIUrl":"10.1007/s12598-024-03122-9","url":null,"abstract":"<div><p>Coating techniques are efficient routes to modify surface property of composite membranes for enhanced membrane separations. However, it remains challenge to deposit continuous inorganic layers on hollow fiber substrates. This study combines surface segregation with physical vapor deposition (PVD) to construct intensified TiO<sub>2</sub> layers on polyether sulfone (PES) hollow fiber substrates. During membrane fabrication, polyethylene-polypropylene glycol (F127) is used as surface segregation agent in casting solution, which enables PES hollow fibers with abundant hydroxy groups, thus improving the compatibility between PES and vaporized TiO<sub>2</sub>. The obtained PES/F127@TiO<sub>2</sub> membranes exhibit tight TiO<sub>2</sub> layers with tunable thickness, high mechanical strength, narrowed pore size and enhanced hydrophilicity. Moreover, the optimized PES/F127@TiO<sub>2</sub> membranes show competitive antifouling performances in water treatment, with a water permeability up to 97 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup> and bovine serum albumin (BSA) rejection of ~ 99%. This work is expected to provide a material design idea to deposit functional layers on polymers for fortified performances. </p><h3>Graphical abstract</h3><p>This study integrated surface segregation with physical vapor deposition (PVD) to deposit TiO2 layers on polyether sulfone (PES) substrates for enhanced antifouling performances. </p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3362 - 3375"},"PeriodicalIF":9.6,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

The manipulation of Ni/MnO heterostructures within carbon hierarchical superstructures as bifunctional oxygen electrocatalysts for enhanced Zn–air batteries 碳层超结构中Ni/MnO异质结构作为增强型锌空气电池双功能氧电催化剂的操纵

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-30 DOI: 10.1007/s12598-024-03164-z

Chao Ge, Zhi-Juan Li, Ying-Na Chang, Tong-Fei Li, Bin He, Ting-Yu Lu, Lin Xu

{"title":"The manipulation of Ni/MnO heterostructures within carbon hierarchical superstructures as bifunctional oxygen electrocatalysts for enhanced Zn–air batteries","authors":"Chao Ge, Zhi-Juan Li, Ying-Na Chang, Tong-Fei Li, Bin He, Ting-Yu Lu, Lin Xu","doi":"10.1007/s12598-024-03164-z","DOIUrl":"10.1007/s12598-024-03164-z","url":null,"abstract":"<p>Rational developing high-performance and economically efficient dual-functional oxygen electrocatalysts to drive the lumberly reactivity rates of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in Zn–air batteries is highly attractive, yet remains conceptually challenging. Herein, Ni/MnO heterostructure nanosheets and nanoparticles firmly anchored onto the N-doped carbon nanofibers (noted as Ni/MnO@N-C NS/NFs) for efficient bifunctional ORR/OER electrocatalysis are designed and realized through a facile electrospinning–pyrolysis–etching strategy. The epitaxial in situ grown Ni/MnO with enriched oxygen vacancies stimulated the charge redistribution in their coupling regions, which effectively optimizes the adsorption/desorption of O-related intermediates in ORR/OER. Benefiting from the Ni/MnO heterostructure moieties and the unique two-dimensional/one-dimensional (2D/1D) superstructure of carbon support with abundantly dispersive active species, the resultant Ni/MnO@N-C NS/NFs deliver robust ORR activity and OER property (an overpotential of 306 mV to obtain 10 mA·cm<sup>−2</sup>) with a smaller potential gap (Δ<i>E</i> = 0.77 V) in alkaline electrolyte. More significantly, practical zinc–air battery building with Ni/MnO@N-C NS/NFs delivers a higher open circuit voltage, excellent output power density, and prominent durability with stable charging and discharging cycle life. The present work demonstrates a crucial understanding of building advanced heterostructure electrocatalysts with enriched oxygen vacancies for metal-air batteries application.</p>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3107 - 3118"},"PeriodicalIF":9.6,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Nitrogen-doped lignin mesoporous carbon/nickel/oxide nanocomposites with excellent lithium storage properties 氮掺杂木质素介孔碳/镍/氧化物纳米复合材料具有优异的锂存储性能

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-30 DOI: 10.1007/s12598-024-03192-9

Ping-Xian Feng, Qi-Liang Chen, Dong-Jie Yang, Huan Wang

{"title":"Nitrogen-doped lignin mesoporous carbon/nickel/oxide nanocomposites with excellent lithium storage properties","authors":"Ping-Xian Feng, Qi-Liang Chen, Dong-Jie Yang, Huan Wang","doi":"10.1007/s12598-024-03192-9","DOIUrl":"10.1007/s12598-024-03192-9","url":null,"abstract":"<div><p>Developing high-capacity carbon-based anode materials is crucial for enhancing the performance of lithium-ion batteries (LIBs). In this study, we presented a nitrogen-doped lignin mesoporous carbon/nickel/nickel oxide (NHMC/Ni/NiO) nanocomposite for developing high-capacity LIBs anode materials through carbonization and selective etching strategies. The synthesized NMHC/Ni/NiO-0.33 composite exhibited a highly regular microstructure with well-dispersed Ni/NiO particles. The composite had a surface area of 408 m<sup>2</sup>⋅g<sup>−1</sup>, a mesopore ratio of 75.0%, and a pyridine–nitrogen ratio of 58.9%. The introduction of nitrogen atoms reduced the disordered structure of lignin mesoporous carbon and enhanced its electrical conductivity, thus improving the lithium storage capabilities of the composite. Following 100 cycles at a current density of 0.2 A⋅g<sup>−1</sup>, the composite demonstrated enhanced Coulomb efficiency and rate performance, achieving a specific discharge capacity of 1230.9 mAh⋅g<sup>−1</sup>. At a high-current density of 1 A⋅g<sup>−1</sup>, the composite exhibited an excellent specific discharge capacity of 714.6 mAh⋅g<sup>−1</sup>. This study presents an innovative method for synthesizing high-performance anode materials of LIBs.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 2","pages":"889 - 900"},"PeriodicalIF":9.6,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Photothermally catalytic fixation of N2 over TiO2 loaded onto carbon paper by fast Joule heating 利用快速焦耳加热法在碳纸上负载TiO2上催化固定N2

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-29 DOI: 10.1007/s12598-024-03066-0

Hui-Ying Yang, Yu Zhao, Ke-Lei Huang, Xiang-Chao Meng

{"title":"Photothermally catalytic fixation of N2 over TiO2 loaded onto carbon paper by fast Joule heating","authors":"Hui-Ying Yang, Yu Zhao, Ke-Lei Huang, Xiang-Chao Meng","doi":"10.1007/s12598-024-03066-0","DOIUrl":"10.1007/s12598-024-03066-0","url":null,"abstract":"<div><p>Combining interfacial solar evaporation with a three-phase photocatalytic system can theoretically improve the production efficiency of ammonia. Herein, we designed a simple solar evaporator via in situ growth of TiO<sub>2</sub> onto hydrophilic carbon paper using a fast Joule heating method. This system had porous channels for high water evaporation rates, wide light-responsive wavelength range, effective light absorption, and potentially high catalytic activity. The lattice disorder and oxygen vacancies created by the rapid heating and cooling process could be reaction sites for nitrogen adsorption and activation. The ammonia yield in the three-phase system was up to 360.37 mol·g<sup>−1</sup>·h<sup>−1</sup>, which was higher than the two-phase system (17.14 μmol·g<sup>−1</sup>·h<sup>−1</sup>). Additionally, the ammonia yield rate was 73.65 μmol·g<sup>−1</sup>·h<sup>−1</sup> in an outdoor test, demonstrating the potential for large-scale solar nitrogen reduction reaction (NRR). As detected, the activation energy for N<sub>2</sub> reduction to NH<sub>3</sub> was reduced to 26.3 kJ·mol<sup>−1</sup>, indicating that this process was facilitated by the design of the photothermal–photocatalytic system. Furthermore, density functional theory (DFT) calculations confirmed the roles of oxygen vacancies as active sites in promoting the NRR. This work provided a new approach to applying solar evaporators for the highly efficient ammonia production by the synergistic effects of photothermal and photocatalytic processes.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3206 - 3217"},"PeriodicalIF":9.6,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

PDMS-encapsulated liquid metal-MXene aerogels for resilient electromagnetic wave absorption in harsh environments pdms封装液态金属- mxene气凝胶，用于在恶劣环境中弹性电磁波吸收

IF 9.6 1区材料科学

Rare Metals Pub Date : 2025-01-29 DOI: 10.1007/s12598-024-03037-5

Yun-Long Li, Jia-Cheng Liu, De-Shun Li, Meng-Meng Fu, A-Ming Xie, Wei-Jin Li, Hao Liang, Ying-Guo Li, Xiao Chen, Chao Yu

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