Emerging Materials Research最新文献_第6页

Reaction mechanisms of pristine and Cu-doped ZnO clusters with ethanol using Evans–Polanyi principle 利用Evans–Polanyi原理研究原始和Cu掺杂ZnO团簇与乙醇的反应机理

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-03-01 DOI: 10.1680/jemmr.22.00149

M. A. Abdulsattar, H. Abduljalil, H. Abed

{"title":"Reaction mechanisms of pristine and Cu-doped ZnO clusters with ethanol using Evans–Polanyi principle","authors":"M. A. Abdulsattar, H. Abduljalil, H. Abed","doi":"10.1680/jemmr.22.00149","DOIUrl":"https://doi.org/10.1680/jemmr.22.00149","url":null,"abstract":"The interaction and adsorption of pristine and Cu-doped ZnO nanoparticles of ethanol (C2H6O) and several other gases are calculated. These gases include carbon dioxide (CO2), carbon monoxide (CO), ammonia (NH3), ozone (O3), nitrogen dioxide (NO2), and sulfur dioxide (SO2). Most of these gases are air pollutants. ZnO wurtzoid clusters are used to represent ZnO nanoparticles. Gibbs free energy and enthalpy of reactions are evaluated. Evans–Polanyi principle is used to evaluate the activation energy that gives the best fit to the Arrhenius equation of the reaction. The results of solving the reaction rate equations are used to compare with experimental findings. The reaction of gases with the air before reaching the sensor surface is included. A comparison of calculated response time (10.5 s), recovery time (470 s), and reaction rate with available experimental results is performed (9 and 420 s respectively) for 50 ppm of ethanol at room temperature. From results above, Evans–Polanyi principle combined with Arrhenius equation can give acceptable results. The response time is inversely proportional to gas concentration, while recovery time is linearly proportional to the gas concentration. A correlation factor can relate reaction rate with the response.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42707360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 2

Microstructure and mechanical properties of SS316L prepared by selective laser melting 选择性激光熔融制备SS316L的组织与力学性能

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-03-01 DOI: 10.1680/jemmr.22.00139

Di Chen, Q. Pan, Ziqi Liu, Qile Shi, Lin Zhang, Jingguang Peng, Ying Li

引用次数: 1

Research on microstructure and mechanical properties of RSW joints of 7075T-6 alloy containing Sc 含Sc 7075T-6合金RSW接头组织与力学性能研究

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-03-01 DOI: 10.1680/jemmr.21.00142

Chao-pin Ma, Jun Shen, Hao Li, C. Zeng, Fuxing Xie

引用次数: 1

Effect of tribological parameters and their optimization for wear responses of TiAlN coating 摩擦学参数及其优化对TiAlN涂层磨损响应的影响

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-03-01 DOI: 10.1680/jemmr.22.00015

Sunil Kumar, S. Maity, Lokeswar Patnaik

{"title":"Effect of tribological parameters and their optimization for wear responses of TiAlN coating","authors":"Sunil Kumar, S. Maity, Lokeswar Patnaik","doi":"10.1680/jemmr.22.00015","DOIUrl":"https://doi.org/10.1680/jemmr.22.00015","url":null,"abstract":"This study investigates the relative effect of tribological process parameters and their optimization for wear responses of TiAlN thin film deposited on heat-treated and plasma nitrided novel MDC-K hot work tool steel. The effect of tribological process parameters was studied by conducting the tribological test on TiAlN thin film against Tungsten Carbide (WC) counterbody. There were three tribological process parameters considered namely: sliding velocity, applied load, and sliding distance to conduct the tribological test and study their effect on five different wear responses, namely friction coefficient (COF), surface roughness (Ra), wear depth (WD), wear mass loss (WML), and hardness (Hv). The relative effect of the process parameters was studied using counter plots and the individual effect and contribution were analyzed using the ANOVA test. Further, t overall evaluation criteria (OEC) method was employed to select the optimal setting of tribological process parameters based on the experimental results. Finally, the surface morphology of the worn TiAlN surface against the best and worst parametric settings was evaluated using EDS-integrated SEM to investigate the underlying wear mechanisms.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41356926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Editorial: A new stage of Emerging Materials Research – challenges and opportunities 社论:新兴材料研究的新阶段——挑战与机遇

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-03-01 DOI: 10.1680/jemmr.2023.12.1.1

H. Gu, F. Heim

引用次数: 0

Photoelectrochemical properties of Cu2O/PANI/Si-based photocathodes destined for CO2 conversion 用于CO2转化的Cu2O/PANI/Si基光电阴极的光电化学性能

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-03-01 DOI: 10.1680/jemmr.22.00167

L. Talbi, I. Bozetine, S. Anas Boussaa, K. Benfadel, D. Allam, N. Rahim, Y. Ould Mohamed, M. Leitgeb, C. Torki, S. Hocine, F. Boudeffar, A. Manseri, S. Kaci

{"title":"Photoelectrochemical properties of Cu2O/PANI/Si-based photocathodes destined for CO2 conversion","authors":"L. Talbi, I. Bozetine, S. Anas Boussaa, K. Benfadel, D. Allam, N. Rahim, Y. Ould Mohamed, M. Leitgeb, C. Torki, S. Hocine, F. Boudeffar, A. Manseri, S. Kaci","doi":"10.1680/jemmr.22.00167","DOIUrl":"https://doi.org/10.1680/jemmr.22.00167","url":null,"abstract":"The present study was aimed to convert CO2 into value-added products such as methanol which not only could address the potential solution for controlling the CO2 concentration level in the atmosphere but also can offer an alternative approach for the production of renewable energy sources. In this perspective, various hybrid photoelectrocatalysts were synthesized, characterized and used as photocathodes for photoelectrocatalytic (PEC) reduction of CO2 to methanol in aqueous medium under visible light irradiation. Flat silicon (Siflat) and pyramidal textured silicon (SiPY) substrates, covered with polyaniline (PANI) with or without sensitization with copper oxide (Cu2O) particles were investigated. It was noticed that the combination of PANI and Cu2O greatly increased the PEC CO2 reduction to methanol owing to enhance the CO2 chemisorption capacity by the photocathode surface and at the same time facilitated the separation of photogenerated electron-hole (e−/h+) pairs. The PEC results demonstrated that the applied potential impacts the photocurrent stability. The sensitization with Cu2O effectively separate the photogenerated e−/h+ pairs and therefore, enhanced the PEC CO2 reduction activity of the hybrid photocatalyst. The best Faradaic efficiency (FE) for methanol formation reached 57.66 % which was recorded when Cu2O/PANI/SiPY heterostructure was used as photocathode at applied potential of −1.2V vs SCE.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43056317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Theoretical study of lead-free perovskite solar cell using ZnSe as ETL and PTAA as HTL ZnSe作ETL和PTAA作HTL的无铅钙钛矿太阳能电池的理论研究

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-03-01 DOI: 10.1680/jemmr.22.00059

V. Srivastava, R. Chauhan, P. Lohia

引用次数: 9

High-performance lead-free-perovskite solar cell: a theoretical study 高性能无铅钙钛矿太阳能电池的理论研究

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-03-01 DOI: 10.1680/jemmr.22.00129

Ahmad Umar, Pranjal Srivastava, Sadanand, Shambhavi Rai, P. Lohia, D. K. Dwivedi, Hassan Algadi, S. Baskoutas

{"title":"High-performance lead-free-perovskite solar cell: a theoretical study","authors":"Ahmad Umar, Pranjal Srivastava, Sadanand, Shambhavi Rai, P. Lohia, D. K. Dwivedi, Hassan Algadi, S. Baskoutas","doi":"10.1680/jemmr.22.00129","DOIUrl":"https://doi.org/10.1680/jemmr.22.00129","url":null,"abstract":"In the present work, lead-free perovskite solar cell has been structured using CH3NH3SnI3 as an absorber layer, P3HT acting as a HTL, and TiO2 as ETL material. Perovskite solar cell is the originating photovoltaic technology that shows great elevation in its performance during recent years. The fundamental n-i-p planar heterojunction structure of photovoltaic cells has been designed and simulated with solar cell capacitance simulation software (SCAPS-1D). In this study, different parameters like thickness, acceptor density, temperature, and defect density have been varied to increase the device performance. Optimum values of different parameters have been used to attain the good results of the photovoltaic device such as PCE, VOC, FF, and JSC of 27.54%, 1.0216 V, 86.56%, and 31.14 mA/cm2, respectively. The impact of acceptor density has been varied from 1x10−12 cm−3 to 1x10−20 cm−3 for the proposed device structure. Therefore, the PCE of this device structure increases by using different charge transport materials. This simulation study shows that the proposed cell structure can be used to construct the photovoltaic cell with higher efficiency.","PeriodicalId":11537,"journal":{"name":"Emerging Materials Research","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44994826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 3

Award-winning paper in 2021 2021年获奖论文

4区材料科学

Emerging Materials Research Pub Date : 2023-03-01 DOI: 10.1680/jemmr.2023.12.1.100

引用次数: 0

Structural, electrical, and thermistor behavior of BiFeO3-PbZrO3 for energy storage devices 用于储能器件的BiFeO3-PbZrO3的结构、电学和热敏电阻行为

IF 2.2 4区材料科学

Emerging Materials Research Pub Date : 2023-01-01 DOI: 10.1680/jemmr.21.00177

P. Mallick, S. Biswal, S. K. Satpathy, B. Behera

引用次数: 2