Nano Materials Science最新文献_第4页

Facile electrochemical surface-alloying and etching of Au wires to enable high-performance substrates for surface enhanced Raman scattering 电化学表面合金化和蚀刻金丝，实现高性能的表面增强拉曼散射基底

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-06-01 DOI: 10.1016/j.nanoms.2023.05.002

Yawen Zhan , Guobin Zhang , Junda Shen , Binbin Zhou , Chenghao Zhao , Junmei Guo , Ming Wen , Zhilong Tan , Lirong Zheng , Jian Lu , Yang Yang Li

{"title":"Facile electrochemical surface-alloying and etching of Au wires to enable high-performance substrates for surface enhanced Raman scattering","authors":"Yawen Zhan , Guobin Zhang , Junda Shen , Binbin Zhou , Chenghao Zhao , Junmei Guo , Ming Wen , Zhilong Tan , Lirong Zheng , Jian Lu , Yang Yang Li","doi":"10.1016/j.nanoms.2023.05.002","DOIUrl":"10.1016/j.nanoms.2023.05.002","url":null,"abstract":"<div>Surface-enhanced Raman Spectroscopy (SERS) is a nondestructive technique for rapid detection of analytes even at the single-molecule level. However, highly sensitive and reliable SERS substrates are mostly fabricated with complex nanofabrication techniques, greatly restricting their practical applications. A convenient electrochemical method for transforming the surface of commercial gold wires/foils into silver-alloyed nanostructures is demonstrated in this report. Au substrates are treated with repetitive anodic and cathodic bias in an electrolyte of thiourea, in a one-pot one-step manner. X-rays absorption fine structure (XAFS) spectroscopy confirms that the AuAg alloy is induced at the surface. The unique AuAg alloyed surface nanostructures are particularly advantageous when served as SERS substrates, enabling a remarkably sensitive detection of Rhodamine B (a detection limit of 10−14 M, and uniform strong response throughout the substrates at 10−12 M).</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 3","pages":"Pages 305-311"},"PeriodicalIF":9.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589965123000193/pdfft?md5=70121262793c47646282984a2fee8e98&pid=1-s2.0-S2589965123000193-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135347959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Phase composition, conductivity, and sensor properties of cerium-doped indium oxide 掺铈氧化铟的相组成、电导率和传感器特性

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-04-01 DOI: 10.1016/j.nanoms.2023.09.001

M.I. Ikim , G.N. Gerasimov , V.F. Gromov , O.J. Ilegbusi , L.I. Trakhtenberg

{"title":"Phase composition, conductivity, and sensor properties of cerium-doped indium oxide","authors":"M.I. Ikim , G.N. Gerasimov , V.F. Gromov , O.J. Ilegbusi , L.I. Trakhtenberg","doi":"10.1016/j.nanoms.2023.09.001","DOIUrl":"10.1016/j.nanoms.2023.09.001","url":null,"abstract":"<div>The hydrothermal synthesis of In2O3 and CeO2–In2O3 is investigated as well as the properties of sensor layers based on these compounds. During the synthesis of In2O3, intermediate products In(OH)3 and InOOH are formed, which are the precursors of stable cubic (c-In2O3) and metastable rhombohedral (rh-In2O3) phases, respectively. A transition from c-In2O3 to rh-In2O3 is observed with the addition of CeO2. The introduction of cerium into rh-In2O3 results in a decrease in the sensor response to hydrogen, while it increases in composites based on c-In2O3. The data on the sensor activity of the composites correlate with XPS results in which CeO2 causes a decrease in the concentrations of chemisorbed oxygen and oxygen vacancies in rh-In2O3. The reverse situation is observed in composites based on c-In2O3. Compared to In2O3 and CeO2–In2O3 obtained by other methods, the synthesized composites demonstrate maximum response to H2 at low temperatures by 70–100 °C, and have short response time (0.2–0.5 s), short recovery time (6–7 s), and long-term stability. A model is proposed for the dependence of sensitivity on the direction of electron transfer between In2O3 and CeO2.</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 2","pages":"Pages 193-200"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589965123000363/pdfft?md5=9e21c4aeedafe4a945593dc63499e880&pid=1-s2.0-S2589965123000363-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135388240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Recent advances in cobalt phosphide-based materials for electrocatalytic water splitting: From catalytic mechanism and synthesis method to optimization design 电催化水分解用磷化钴基材料的研究进展:从催化机理、合成方法到优化设计

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-04-01 DOI: 10.1016/j.nanoms.2022.04.003

Rongrong Deng , Mengwei Guo , Chaowu Wang , Qibo Zhang

{"title":"Recent advances in cobalt phosphide-based materials for electrocatalytic water splitting: From catalytic mechanism and synthesis method to optimization design","authors":"Rongrong Deng , Mengwei Guo , Chaowu Wang , Qibo Zhang","doi":"10.1016/j.nanoms.2022.04.003","DOIUrl":"10.1016/j.nanoms.2022.04.003","url":null,"abstract":"<div>Electrochemical water splitting has long been considered an effective energy conversion technology for transferring intermittent renewable electricity into hydrogen fuel, and the exploration of cost-effective and high-performance electrocatalysts is crucial in making electrolyzed water technology commercially viable. Cobalt phosphide (Co-P) has emerged as a catalyst of high potential owing to its high catalytic activity and durability in water splitting. This paper systematically reviews the latest advances in the development of Co-P-based materials for use in water splitting. The essential effects of P in enhancing the catalytic performance of the hydrogen evolution reaction and oxygen evolution reaction are first outlined. Then, versatile synthesis techniques for Co-P electrocatalysts are summarized, followed by advanced strategies to enhance the electrocatalytic performance of Co-P materials, including heteroatom doping, composite construction, integration with well-conductive substrates, and structure control from the viewpoint of experiment. Along with these optimization strategies, the understanding of the inherent mechanism of enhanced catalytic performance is also discussed. Finally, some existing challenges in the development of highly active and stable Co-P-based materials are clarified, and prospective directions for prompting the wide commercialization of water electrolysis technology are proposed.</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 2","pages":"Pages 139-173"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S258996512200023X/pdfft?md5=bd1bfc987bc230126ee791e2e65f1dbb&pid=1-s2.0-S258996512200023X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42710358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effects of surface chlorine atoms on charge distribution and reaction barriers for photocatalytic CO2 reduction 表面氯原子对光催化CO2还原中电荷分布和反应势垒的影响

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-04-01 DOI: 10.1016/j.nanoms.2023.08.001

Wendong Zhang , Wenjun Ma , Yuerui Ma , Peng Chen , Qingqing Ye , Yi Wang , Zhongwei Jiang , Yingqing Ou , Fan Dong

{"title":"Effects of surface chlorine atoms on charge distribution and reaction barriers for photocatalytic CO2 reduction","authors":"Wendong Zhang , Wenjun Ma , Yuerui Ma , Peng Chen , Qingqing Ye , Yi Wang , Zhongwei Jiang , Yingqing Ou , Fan Dong","doi":"10.1016/j.nanoms.2023.08.001","DOIUrl":"10.1016/j.nanoms.2023.08.001","url":null,"abstract":"<div>Photocatalytic CO2 reduction to produce high value-added carbon-based fuel has been proposed as a promising approach to mitigate global warming issues. However, the conversion efficiency and product selectivity are still low due to the sluggish dynamics of transfer processes involved in proton-assisted multi-electron reactions. Lowering the formation energy barriers of intermediate products is an effective method to enhance the selectivity and productivity of final products. In this study, we aim to regulate the surface electronic structure of Bi2WO6 by doping surface chlorine atoms to achieve effective photocatalytic CO2 reduction. Surface Cl atoms can enhance the absorption ability of light, affect its energy band structure and promote charge separation. Combined with DFT calculations, it is revealed that surface Cl atoms can not only change the surface charge distribution which affects the competitive adsorption of H2O and CO2, but also lower the formation energy barrier of intermediate products to generate more intermediate ∗COOH, thus facilitating CO production. Overall, this study demonstrates a promising surface halogenation strategy to enhance the photocatalytic CO2 reduction activity of a layered structure Bi-based catalyst.</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 2","pages":"Pages 235-243"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589965123000338/pdfft?md5=a843448b98dd3033968f897001a2b251&pid=1-s2.0-S2589965123000338-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41883777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Improvement of the piezoelectricity of PVDF-HFP by CoFe2O4 nanoparticles CoFe2O4纳米颗粒改善PVDF-HFP的压电性

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-04-01 DOI: 10.1016/j.nanoms.2023.03.002

Dan Lei , Ning Hu , Liangke Wu , Alamusi , Huiming Ning , Yang Wang , Zhaonan Jin , Yaolu Liu

{"title":"Improvement of the piezoelectricity of PVDF-HFP by CoFe2O4 nanoparticles","authors":"Dan Lei , Ning Hu , Liangke Wu , Alamusi , Huiming Ning , Yang Wang , Zhaonan Jin , Yaolu Liu","doi":"10.1016/j.nanoms.2023.03.002","DOIUrl":"10.1016/j.nanoms.2023.03.002","url":null,"abstract":"<div>High piezoelectric composite films composed of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and ferromagnetic cobalt ferrite (CoFe2O4) (0.00 wt% to 0.2 wt%) are prepared by a solution casting method accompanied by uniaxial stretching and high electric field poling. The decisive effect of the poling electric field on the power generating capability was confirmed by the experiments. For pure PVDF-HFP films, when the maximum electric field Emax is 120 MV/m, the calibrated open circuit voltage reaches 2.93 V, which is much higher than those poled at lower electric fields (70 MV/m: 1.41 V; 90 MV/m: 2.11 V). Furthermore, the addition of CoFe2O4 also influences the piezoelectricity dramatically. In the samples containing 0.15 wt% CoFe2O4, the calibrated open circuit voltage increases to the maximum value of 3.57 V. Meanwhile, the relative fraction of the β-phase and the crystallinity degree are 99% and 48%, respectively. The effects of CoFe2O4 nanoparticles on initial crystallization, uniaxial stretching and high electric field poling are investigated by XRD, FTIR and DSC.</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 2","pages":"Pages 201-210"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589965123000089/pdfft?md5=b5a1bd88016de95bc3659a3ccbed7ede&pid=1-s2.0-S2589965123000089-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45779484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Recent advances in graphene-based phase change composites for thermal energy storage and management 用于热能储存和管理的石墨烯基相变复合材料的最新进展

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-04-01 DOI: 10.1016/j.nanoms.2023.09.003

Qiang Zhu , Pin Jin Ong , Si Hui Angela Goh , Reuben J. Yeo , Suxi Wang , Zhiyuan Liu , Xian Jun Loh

{"title":"Recent advances in graphene-based phase change composites for thermal energy storage and management","authors":"Qiang Zhu , Pin Jin Ong , Si Hui Angela Goh , Reuben J. Yeo , Suxi Wang , Zhiyuan Liu , Xian Jun Loh","doi":"10.1016/j.nanoms.2023.09.003","DOIUrl":"10.1016/j.nanoms.2023.09.003","url":null,"abstract":"<div>Energy storage and conservation are receiving increased attention due to rising global energy demands. Therefore, the development of energy storage materials is crucial. Thermal energy storage (TES) systems based on phase change materials (PCMs) have increased in prominence over the past two decades, not only because of their outstanding heat storage capacities but also their superior thermal energy regulation capability. However, issues such as leakage and low thermal conductivity limit their applicability in a variety of settings. Carbon-based materials such as graphene and its derivatives can be utilized to surmount these obstacles. This study examines the recent advancements in graphene-based phase change composites (PCCs), where graphene-based nanostructures such as graphene, graphene oxide (GO), functionalized graphene/GO, and graphene aerogel (GA) are incorporated into PCMs to substantially enhance their shape stability and thermal conductivity that could be translated to better storage capacity, durability, and temperature response, thus boosting their attractiveness for TES systems. In addition, the applications of these graphene-based PCCs in various TES disciplines, such as energy conservation in buildings, solar utilization, and battery thermal management, are discussed and summarized.</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 2","pages":"Pages 115-138"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589965123000387/pdfft?md5=b9f08f3d2f3db165f1c0fc6d34638f38&pid=1-s2.0-S2589965123000387-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135249674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Double enzyme mimetic activities of multifunctional Ag nanoparticle-decorated Co3V2O8 hollow hexagonal prismatic pencils for application in colorimetric sensors and disinfection 多功能银纳米粒子装饰的 Co3V2O8 中空六方棱柱笔的双酶模拟活性在比色传感器和消毒中的应用

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-04-01 DOI: 10.1016/j.nanoms.2022.10.002

Ying Gao , Peng Ju , Yu Zhang , Yuxin Zhang , Xiaofan Zhai , Jizhou Duan , Baorong Hou

{"title":"Double enzyme mimetic activities of multifunctional Ag nanoparticle-decorated Co3V2O8 hollow hexagonal prismatic pencils for application in colorimetric sensors and disinfection","authors":"Ying Gao , Peng Ju , Yu Zhang , Yuxin Zhang , Xiaofan Zhai , Jizhou Duan , Baorong Hou","doi":"10.1016/j.nanoms.2022.10.002","DOIUrl":"10.1016/j.nanoms.2022.10.002","url":null,"abstract":"<div>Since the catalytic activity of most nanozymes is still far lower than the corresponding natural enzymes, there is urgent need to discover novel highly efficient enzyme-like materials. In this work, Co3V2O8 with hollow hexagonal prismatic pencil structures were prepared as novel artificial enzyme mimics. They were then decorated by photo-depositing Ag nanoparticles (Ag NPs) on the surface to further improve its catalytic activities. The Ag NPs decorated Co3V2O8 (ACVPs) showed both excellent oxidase- and peroxidase-like catalytic activities. They can oxidize the colorless 3,3’,5,5’-tetramethylbenzidine rapidly to induce a blue change. The enhanced enzyme mimetic activities can be attributed to the surface plasma resonance (SPR) effect of Ag NPs as well as the synergistic catalytic effect between Ag NPs and Co3V2O8, accelerating electron transfer and promoting the catalytic process. ACVPs were applied in constructing a colorimetric sensor, validating the occurrence of the Fenton reaction, and disinfection, presenting favorable catalytic performance. The enzyme-like catalytic mechanism was studied, indicating the chief role of ⋅O2- radicals in the catalytic process. This work not only discovers a novel functional material with double enzyme mimetic activity but also provides a new insight into exploiting artificial enzyme mimics with highly efficient catalytic ability.</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 2","pages":"Pages 244-255"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S258996512200054X/pdfft?md5=e458dfefaf87e638bd956219097ea41b&pid=1-s2.0-S258996512200054X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135026407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Recent advances in transition metal phosphide materials: Synthesis and applications in supercapacitors 过渡金属磷化物材料的合成及其在超级电容器中的应用

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-04-01 DOI: 10.1016/j.nanoms.2023.03.003

Ge Li , Yu Feng , Yi Yang , Xiaoliang Wu , Xiumei Song , Lichao Tan

{"title":"Recent advances in transition metal phosphide materials: Synthesis and applications in supercapacitors","authors":"Ge Li , Yu Feng , Yi Yang , Xiaoliang Wu , Xiumei Song , Lichao Tan","doi":"10.1016/j.nanoms.2023.03.003","DOIUrl":"10.1016/j.nanoms.2023.03.003","url":null,"abstract":"<div>Supercapacitors (SCs) are considered promising energy storge systems because of their outstanding power density, fast charge and discharge rate and long-term cycling stability. The exploitation of cheap and efficient electrode materials is the key to improve the performance of supercapacitors. As the battery-type materials, transition metal phosphides (TMPs) possess high theoretical specific capacity, good electrical conductivity and superior structural stability, which have been extensively studied to be electrode materials for supercapacitors. In this review, we summarize the up-to-date progress on TMPs materials from diversified synthetic methods, diverse nanostructures and several prominent TMPs and their composites in application of supercapacitors. In the end, we also propose the remaining challenges toward the rational discovery and synthesis of high-performance TMP electrodes materials for energy storage.</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 2","pages":"Pages 174-192"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589965123000090/pdfft?md5=00babe1e446692c4c6a09217f2576dea&pid=1-s2.0-S2589965123000090-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43286100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A dynamic database of solid-state electrolyte (DDSE) picturing all-solid-state batteries 描绘全固态电池的固态电解质动态数据库 (DDSE)

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-04-01 DOI: 10.1016/j.nanoms.2023.08.002

Fangling Yang , Egon Campos dos Santos , Xue Jia , Ryuhei Sato , Kazuaki Kisu , Yusuke Hashimoto , Shin-ichi Orimo , Hao Li

{"title":"A dynamic database of solid-state electrolyte (DDSE) picturing all-solid-state batteries","authors":"Fangling Yang , Egon Campos dos Santos , Xue Jia , Ryuhei Sato , Kazuaki Kisu , Yusuke Hashimoto , Shin-ichi Orimo , Hao Li","doi":"10.1016/j.nanoms.2023.08.002","DOIUrl":"10.1016/j.nanoms.2023.08.002","url":null,"abstract":"<div>All-solid-state batteries (ASSBs) are a class of safer and higher-energy-density materials compared to conventional devices, from which solid-state electrolytes (SSEs) are their essential components. To date, investigations to search for high ion-conducting solid-state electrolytes have attracted broad concern. However, obtaining SSEs with high ionic conductivity is challenging due to the complex structural information and the less-explored structure-performance relationship. To provide a solution to these challenges, developing a database containing typical SSEs from available experimental reports would be a new avenue to understand the structure-performance relationships and find out new design guidelines for reasonable SSEs. Herein, a dynamic experimental database containing >600 materials was developed in a wide range of temperatures (132.40–1261.60 K), including mono- and divalent cations (e.g., Li+, Na+, K+, Ag+, Ca2+, Mg2+, and Zn2+) and various types of anions (e.g., halide, hydride, sulfide, and oxide). Data-mining was conducted to explore the relationships among different variates (e.g., transport ion, composition, activation energy, and conductivity). Overall, we expect that this database can provide essential guidelines for the design and development of high-performance SSEs in ASSB applications. This database is dynamically updated, which can be accessed via our open-source online system.</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 2","pages":"Pages 256-262"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S258996512300034X/pdfft?md5=5154db5151a9a588498c98ba2e500f7f&pid=1-s2.0-S258996512300034X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135248627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Tuning the reactivity of TiO2 layer with uniform distribution of Sub-5 nm Fe2O3 particles via in situ voltage-assisted oxidation for robust catalytic reduction 通过原位电压辅助氧化技术调节带有均匀分布的亚 5 纳米 Fe2O3 粒子的二氧化钛层的反应活性，以实现稳健的催化还原作用

IF 9.9 2区材料科学

Nano Materials Science Pub Date : 2024-04-01 DOI: 10.1016/j.nanoms.2023.09.007

Nisa Nashrah, Abdelkarim Chaouiki, Wail Al Zoubi, Young Gun Ko

{"title":"Tuning the reactivity of TiO2 layer with uniform distribution of Sub-5 nm Fe2O3 particles via in situ voltage-assisted oxidation for robust catalytic reduction","authors":"Nisa Nashrah, Abdelkarim Chaouiki, Wail Al Zoubi, Young Gun Ko","doi":"10.1016/j.nanoms.2023.09.007","DOIUrl":"10.1016/j.nanoms.2023.09.007","url":null,"abstract":"<div>The trade-off between efficiency and stability has limited the application of TiO2 as a catalyst due to its poor surface reactivity. Here, we present a modification of a TiO2 layer with highly stable Sub-5 nm Fe2O3 nanoparticles (NP) by modulating its structure-surface reactivity relationship to attain efficiency-stability balance via a voltage-assisted oxidation approach. In situ simultaneous oxidation of the Ti substrate and Fe precursor using high-energy plasma driven by high voltage resulted in uniform distribution of Fe2O3 NP embedded within porous TiO2 layer. Comprehensive surface characterizations with density functional theory demonstrated an improved electronic transition in TiO2 due to the presence of surface defects from reactive oxygen species and possible charge transfer from Ti to Fe; it also unexpectedly increased the active site in the TiO2 layer due to uncoordinated electrons in Sub-5 nm Fe2O3 NP/TiO2 catalyst, thereby enhancing the adsorption of chemical functional groups on the catalyst. This unique embedded structure exhibited remarkable improvement in reducing 4-nitrophenol to 4-aminophenol, achieving approximately 99% efficiency in 20 min without stability decay after 20 consecutive cycles, outperforming previously reported TiO2-based catalysts. This finding proposes a modified-electrochemical strategy enabling facile construction of TiO2 with nanoscale oxides extandable to other metal oxide systems.</div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"6 2","pages":"Pages 223-234"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589965123000612/pdfft?md5=56abc247fe57e2ceb0e1e216f51b0709&pid=1-s2.0-S2589965123000612-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135761959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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